Zaposlitev "qa engineer"

At Celtra, data is an important part of the products we build. We ingest and transform data from a range of internal and external sources and use it to power analytical features, APIs, and increasingly AI-powered experiences for our users. We are looking for a Software Developer, Data to join our product engineering team. This is a software engineering role focused on building product-facing data systems and features end to end - from understanding and modeling the data to pipelines, backend services, and user-facing experiences. You will work across the stack, own features through production, and help us build reliable and maintainable systems that turn data into useful product capabilities. What tools do we use? Our data platform is centered around Snowflake and dbt, with Fivetran and custom integrations handling data ingestion. We use Terraform for infrastructure as code and CI/CD extensively to automate testing and delivery. Our application stack is built primarily with TypeScript, with Vue.js on the frontend. The team also builds backend services, analytical APIs, workers, and orchestration infrastructure. AI is also part of how we build software. We have an AI-assisted SDLC in place where engineers orchestrate coding agents to offload repetitive and tedious work, while staying responsible for technical decisions, quality, and outcomes. 1. Your Responsibilities - Own and build product features end to end, working across data pipelines, backend services, and frontend when needed, and taking them through to production. - Understand the data and its sources, and design and evolve data models that are clear, maintainable, and reusable. - Build and improve our data pipelines and infrastructure, from ingestion and transformation to orchestration, reliability, and production operation. - Build analytical APIs, services, and frontend experiences that make data available to our products and users. - Work with product stakeholders, clients, and vendors to understand needs, investigate problems, and turn them into practical technical solutions. - Contribute to the evolution of our data platform, including data quality, governance, observability, and AI-powered capabilities. 2. Qualifications - Strong SQL and data modeling skills, with experience building ETL/ELT pipelines and working with layered transformation patterns such as raw/staging, intermediate, and curated data models. - Solid software engineering fundamentals, with experience building and operating production systems and backend services. - Good understanding of software engineering practices such as automated testing, CI/CD, and production observability. - Ability to independently own and deliver moderately complex engineering work, from understanding the problem through implementation and production operation. - Good verbal and written English communication skills. 3. What brings extra points? - Hands-on experience with Snowflake, dbt, Fivetran or other ingestion frameworks, Terraform, or TypeScript. - Experience building distributed systems, asynchronous workflows, or orchestration systems. - Experience designing data quality, observability, or governance systems. - Experience building or improving development harnesses for coding agents and agentic workflows. - Experience developing AI agents or systems that provide AI applications with access to structured company data. - Familiarity with frontend frameworks such as Vue.js. 4. What we value You don't need to know every tool in our stack. What matters more is that you are curious, proactive, and motivated to grow. We value engineers who like to understand how things really work, take ownership beyond the initial implementation, and are comfortable working across different parts of the stack. You should enjoy turning ambiguous problems into practical solutions and continuously expanding what you can take on independently. 1. Why Celtra? - Impact: Create high-quality digital work for leading global brands across a wide range of campaigns and formats. - Culture: We are inventive, collaborative, and proudly a little bit quirky - because doing great work should also be fun. - Flexibility: Hybrid with strong hubs in Ljubljana, London and New York, and team get-togethers that keep us connected. - Growth: You will learn from experienced team members and grow into bigger roles as you go. 2. What we offer? - Flexible working hours and hybrid work based on a fixed number of in-office days. - A dedicated educational budget to explore new skills and deepen your expertise. - Equipment of your choice. - Knowledge shares. - Additional pension and health insurance. - WFH budget. An additional budget of 500 EUR to set up your home space. - Employee well-being. Dedicated budget for any kind of wellness activities such as fitness, yoga, etc. Apply here: https://celtra.com/careers/openings/#op-706810-software-developer-data

Objavljeno pred: 1 mesec

We are looking for a Cloud Engineer to join a team of talented engineers who build premium solutions at scale. Every day, we tackle ambiguous and stimulating challenges. Join a highly experienced team who builds quality and responsible advertising, at scale! Our main Engineering challenges at Teads Working in a very high-traffic environment (2.2 billion users per month, 100 billion events per day) with low latency and high availability constraints (2 million requests per second, responses in less than 150 milliseconds). Rich and diverse tech stack and system architecture to optimize for performance, scalability, resiliency, and cost efficiency. We use mostly Java, Scala, Golang, Python, and TypeScript, among others. Management of large datasets with milliseconds order of magnitude access time, to compute in a near real-time complex auction resolution algorithm (18 million predictions per second). Build efficient and easy-to-use web products used by thousands of users working for the world's most premium publishers, advertisers, and agencies. A fast-changing environment where we continuously collaborate with Product teams and constantly adapt our Cloud infrastructure for new features and Products. Bring a wide diversity of profiles to the same level of quality and knowledge. Our Infrastructure Team Running on public cloud providers (AWS, Azure, GCP) as well as on-premise data centers, we are a growing team intentionally composed of diverse skills sets (development obviously, but also data store, software reliability, operational automation, etc.) which aims at delivering a first-class platform for our product development teams. We embrace Reliability Engineering, toil is our enemy while automation at scale is our main ally. What will you do? As part of the Cloud Foundation team, you'll be the master architect of our core infrastructure, with a primary focus on global networking and automated provisioning. You'll bridge the gap between our public clouds (AWS, GCP) and on-premise data centers by building the high-performance connectivity and "Infrastructure as Code" pipelines that tie them together. Your work will ensure that our network is not only secure and resilient but also invisible to the feature teams who rely on your automated workflows to spin up environments at scale. You'll thrive on solving complex routing challenges and streamlining the lifecycle of our resources, always striving for maximum efficiency and speed. Through constant collaboration and knowledge sharing, you'll help us evolve a rock-solid foundation that scales as fast as our ambitions. Your skills and experience: BS in Software Engineering (or extensive experience equivalent to). Good programming abilities. Responsible and proficient adopter of AI tools. Extensive experience building and running workloads in public clouds (AWS, GCP, or both) Strong working knowledge of and experience in IaC technologies, like Terraform. Strong commitment to quality designs, automation, and documentation. Pride in ownership, initiative and collaboration. Eager to learn, discover and become proficient in new tools and languages. Effective communicator; you love to solve problems and are creative in your work. You embrace change and are enthusiastic to learn in order to bring projects to proper completion. Bonus points: Past experience in building, industrializing and running large highly available, high scale and high traffic infrastructure in multiple regions. Past experience in advertising technology or e-commerce. Career Development: Continuous investment in our employees' skills: in-house and external training, internal mobility … Life Balance: A well-balanced work-life for our employees is one of our top priorities: 22 days off per year, 15 days per year of work from anywhere, hybrid work (3 days per week in the office) Wellness: Prioritizing employee well-being through premium work equipment, enjoyable work environment (work-life balance, team building events, summits), remote work subsidy, promoting Diversity & Inclusion with internal & external initiatives, etc. https://job-boards.eu.greenhouse.io/teads1/jobs/4924453101

About us You'll join MTS (Managed Trading Services) - the platform behind Sportradar's risk betting management, processing millions of bets in real time for operators around the world. Our teams own high-throughput, low-latency services: risk and liability, odds and offer, ticket validation, and the data plane that feeds them. We work in a modern cloud-native stack: Java (Spring Boot / Quarkus), Kafka / MSK, gRPC & Protobuf, AWS (EKS, ECS, DynamoDB, Aurora), ArgoCD / GitOps, Terraform, and observability on Grafana, Prometheus and OpenTelemetry. This is a great place to level up: you'll ship real features to production quickly, learn a genuinely rich domain, and grow toward owning larger pieces of it. The challenge - Design, build, test and ship backend services and APIs that are part of a larger, real-time system; and see them through to production. - Deliver in small increments. Break work into concrete, independently shippable pieces that land and get validated as you go, rather than accumulating into one big drop. - Own your changes in production; help with monitoring, alerting and the occasional on-call, and learn how your services behave under real load. - Write clean, well-tested, documented code, take part in code review, and help capture key decisions so the team can build on them. - Learn the MTS ecosystem; how the interconnected services fit together; and grow the independence to make more calls yourself over time. - Work with product managers and senior engineers to turn requirements into well-shaped, deliverable work. - Use modern, AI-assisted development; we actively encourage spec-driven, agentic workflows to move faster with quality. About you Must-have skills - 2+ years of professional experience with Java (Spring Boot, Hibernate, or similar modern frameworks) or another strong OO language. - Good grasp of computer science fundamentals and clean, testable code. - Solid understanding of automated testing; unit, integration, and API testing (JUnit, Mockito, or similar). - Comfortable with CI/CD and collaborative git workflows. - AI-assisted, spec-driven development as part of your day-to-day workflow; not just autocomplete. - Willingness to run what you build; going beyond writing code to owning your changes in production (deployment, monitoring, on-call). Nice-to-have skills - Exposure to AWS, Kafka, Docker / Kubernetes, or relational and NoSQL databases. - Familiarity with gRPC / protobuf, Rest API design, or event-driven systems. - Interest in IaC (Terraform), GitOps, or observability tooling. - Interest in betting, trading, or other real-time / high-throughput domains. Personal traits - Eager to learn; a complex domain and a modern stack, quickly. - Takes ownership of their work and wants to grow toward owning features end-to-end. - A collaborative teammate with good communication who asks questions and gives honest input. - Pragmatic, with a bias toward shipping small and often. - A positive, can-do attitude and a commitment to high professional standards. Our offer - A collaborative environment with colleagues from all over the world (Engineering offices in Europe, Asia, and the US), including various social events and teambuilding. - Ability to shape your own workday and career via a clearly defined professional and personal development plan. - Opportunity to develop yourself within an inspiring and fast-growing company with our Career framework possibilities. - Vibrant and inclusive community, including Women in Tech and Pride groups, which welcome all participants. - Global Employee Assistance Programme. - Calm and Reulay app (managing stress, maintaining focus, improving sleep, building resilience). - Online training videos. - Flexible working hours. While we appreciate the flexibility and benefits of working from home, we strongly believe that coming together in person fosters stronger connections, encourages collaboration, and drives innovation; both as individuals and as a company. The energy, shared ideas, and team support we experience in the office strengthen the foundation of our success and culture. For this reason, we are an office-first business operating on a fully on-site model, with team members working in the office five days a week to build relationships, exchange ideas, and grow together. Certain exemptions may apply depending on location; your local point of contact can provide further details. Our recruitment process - Initial screening: a quick video chat with our Talent Acquisition Partner. - Introduction interview: meet the technical team and hiring manager to dive into the team and your expertise. - Technical assessment: a short home task with emphasis on your AI-assisted, spec-driven development skills; showing how you use agentic workflows to deliver. - Final interview: discuss your solution and team fit with additional team members. - Final steps: feedback and, if successful, an offer. https://smrtr.io/B-Dps

V Kolibri Labs širimo engineering ekipo in iščemo Senior Machine Learning / AI Engineerja/-ko, ki bo skupaj z nami gradil/-a AI-native platformo za znanstveno delo, peer review in objavljanje raziskav. Platformo razvijamo v tesnem partnerstvu z mednarodno akademsko organizacijo iz ZDA, ki produkt skupaj z nami aktivno soustvarja. Tvoj fokus bo core AI stack in vprašanje, kako AI sisteme narediti dejansko uporabne, merljive in boljše. Delal/-a boš na: Iščemo nekoga, ki: - zelo dobro razume moderne LLM sisteme in njihove omejitve, - dobro razume statistiko in eksperimentalno metodologijo, - zna zasnovati kakovostne evale, benchmarke in eksperimente, - zna rezultate kritično interpretirati in ločiti signal od šuma, - zna modele in eksperimente spraviti iz notebooka v produkcijsko okolje, - hitro preverja nove ideje in se ne naveže prehitro na en pristop, - aktivno spremlja nove modele, papers, GitHub projekte, agent frameworke in eval pristope, - ima svoje mnenje o tem, kaj v trenutnem AI svetu dejansko deluje in kaj ne, - se zelo dobro pisno in ustno izraža, - je pripravljen/-a svoje rezultate tudi javno predstaviti oziroma objaviti. Ne iščemo nujno akademika. Pomembneje nam je, da razumeš raziskovalni način razmišljanja, znaš postavljati dobre hipoteze in jih preverjati z eksperimenti. Poznavanje raziskovalnega oziroma akademskega procesa od znotraj je velik plus. PhD ni pogoj. - delo na zahtevnih problemih na presečišču LLM-jev, agentov in znanstvenega dela, - dostop do velike količine kakovostnih podatkov s tega področja, - veliko svobode pri načrtovanju eksperimentov in raziskovalnih smeri, - možnost razvoja in javne objave benchmarkov in rezultatov, - neposreden vpliv na core AI stack produkta, - možnost dela tako na raziskovalnih kot produkcijskih problemih, - sodelovanje z ekipo v Sloveniji in partnerjem v ZDA, - okolje, kjer se pričakuje hitro eksperimentiranje in argumentirano tehnično razpravo, - remote-friendly način dela, 5.500 - 8.000 € bruto/mesec + performance bonus. Trenutno nas je okoli 10 v Sloveniji, tesno pa sodelujemo tudi z ekipo našega partnerja v ZDA. Pošlji nam LinkedIn, GitHub, CV oziroma karkoli, kar najbolje pokaže tvoje delo, na: [email protected] Ob prijavi nam na kratko odgovori še na vprašanji: Kaj je trenutno v LLM/agent svetu najbolj precenjeno in kaj najbolj podcenjeno? Kako bi preveril/-a, ali AI reviewer dejansko izboljšuje kakovost peer reviewa?

Delim povezavo do razpisanega delovnega mesta za Backend inženirja: https://3fs.bamboohr.com/careers/56 https://3fs.bamboohr.com/careers/56

Objavljeno pred: 2 meseca

Full-time | Remote (+/- 1 CET) | Flexible working hours We are looking for a Network Engineer to own and evolve the network infrastructure that connects and secures the CyberNoc platform running on AWS with Palo Alto Networks firewalls providing a centralized security layer across our environments. Our network footprint is hybrid including - AWS services, APNs, S2S VPNs and other enterprise connections. We would need your energy for: - Design, build and operate secure, highly available cloud networking across our AWS environments — VPCs, transit gateways, VPNs, load balancers and routing. - Managing and hardening our Palo Alto security layer. This involves close collaboration with the DevOps team on connectivity for deployments and microservices, as well as with the Developer team to understand application and traffic requirements. - The role also covers network observability and automation, troubleshooting connectivity and performance issues, and continuously improving our network architecture to ensure high availability and strong security posture for our customers. You have the following qualifications: - Degree or equivalent experience in Computer Science, Network Engineering, or related field. - Experience with Palo Alto Networks firewalls (VM-Series, Panorama) or comparable centralized security/firewall platforms. - Solid understanding of core networking concepts and protocols (TCP/IP, BGP, MPLS, DNS, routing, and switching). - VPNs, site-to-site and client connectivity, Zero Trust network access. - Excellent problem-solving skills and a proactive attitude towards learning and adopting new technologies. - Strong communication and collaboration skills to work effectively with cross-functional teams — English being the primary language. Must Have: - Multi-cloud and Enterprise networking. - Palo Alto Strata Cloud Manager centralized policy management and logging. - Load balancers (ALB/NLB or equivalent), reverse proxies, and WAF concepts. - Containerized and Kubernetes networking (EKS/AKS, CNI, service mesh basics). - Multi-tenancy experience. - Genuine interest in energy industry topics (ICT and energy market knowledge). - A proactive, communicative, and responsible team player with the ability to work independently and solve problems effectively. - Enjoyment in working collaboratively with interdisciplinary and international teams. - Excellent command of English (B2 / C1), both written and spoken. Nice to Have: - Strong, hands-on experience with AWS networking (VPC, Transit Gateway, VPN, Direct Connect, Route 53, load balancers) - Familiarity with infrastructure-as-code tools such as Terraform, CloudFormation and Ansible, and version control systems (e.g., Git) - Proficiency in scripting languages (e.g., Python, Bash) for network automation and tooling - Security certifications (e.g., PCNSA/PCNSE, AWS Advanced Networking Specialty). - SD-WAN or Zero Trust architecture experience. - Linux (Ubuntu/RHEL) administration. - Energy grid and market knowledge. - Observability tools (Prometheus/VictoriaMetrics, Grafana, Alertmanager, ELK stack). What you can expect from us: - A high degree of creative and decision-making freedom combined with a challenging task. - Flat hierarchies with short decision-making processes. - Intensive personal induction tailored to your experience and skills, combined with learning by doing. - A young, competent, agile, and interdisciplinary team in a modern working environment. - Team-oriented, cooperative working atmosphere. - Flexible working hours, including home office. - Continuous development of your professional and personal skills. - We will help you find and grow into your future roles. - Strong corporate support and security by EVN Group, a Europe-wide active energy supplier. We offer you a flexible contract model tailored to your individual needs, as well as a competitive salary that reflects your qualifications and experience. Have we met your interest? We look forward to your application. Please send your CV in English to: Dragana Radojevic Admin Support [email protected] CyberGrid GmbH Rothschildplatz 3 top 3.07. A 1020 Wien, Austria

About us: As a Data Scientist in Sportradar's AI unit, you will work withing an established, high performing team of experts on the design, development and deployment of predictive models and algorithms powering Spotradar's products. You will leverage Sportradar's extensive sports datasets, betting transaction data and user interaction data collected through Sportradar's products and services reaching millions of end-users across the globe. The position will be focused on the development of AI and advanced analytics solutions for sportsbook risk management and liquidity driven odds trading, collaborating closely with product owners and technical leads in our Managed Trading Services and Odds Services product domains. Sportradar is a global leader in understanding and leveraging the power of sports data for hundreds of business customers around the world, in turn entertaining millions of sports enthusiasts. The challenge: - Analyse and explore data using statistical analysis tools and scripting. - Develop machine learning or statistical models for use in our sportsbook risk management and odds trading products and services. - Rigorously validate methods, models, algorithms and hypotheses using back-testing on historical data and/or simulations. - Bring models into production leveraging our AI platform, maintaining ownership of the AI solution throughout the model development lifecycle, from modelling to production deployment, monitoring and continuous model improvement. - Design and implement novel methods for data analysis, tailored to our sports-related application domains and propose new ways of using data to improve our products and services. - Present ideas and solutions to software developers and business stakeholders in a clear and understandable way. About you: - The successful candidate will be knowledgeable in machine learning and statistics. - Strong programming skills and software development experience needed to productize low latency streaming analytics solutions are a must. - Experience with risk management and portfolio optimization in financial, gaming or sports betting contexts is a plus. - Experience in data science, statistical modelling, applied mathematics and/or software engineering. - Profficiency with advanced querying of large analytical databases using SQL. - Programming experience is a must. - Experience with Python, R or similar statistical and/or machine learning software/toolkits. - Bonus: Experience working in Java. - Bonus: Hands-on experience with real-time streaming analytics frameworks such as Apache Flink and streaming technologies such as Apache Kafka. - Bonus: Experience working with Mac/Linux environments. - Bachelor of Science in Mathematics / Statistics, Computer Science / Engineering, or related field; equivalent experience acceptable. - Fluent in English (written and spoken). - Autonomous, rigorous, creative and a team player. Our offer: - A collaborative environment with colleagues from all over the world (Engineering offices in Europe, Asia and US) including various social events and teambuilding. - Flexibility to manage your workday and tasks with autonomy. - A balance of structure and autonomy to tackle your daily tasks. - Vibrant and inclusive community, including Women in Tech and Pride groups which welcome all participants. - Global Employee Assistance Programme. - Calm and Reulay app (leading well-being apps designed to support focus, quality rest, mindfulness, and long-term mental resilience). - Online training videos. - Flexible working hours. https://smrtr.io/zqJ7y

We're hiring a Senior Security Engineer to help shift security left across product and platform teams, while also supporting internal corporate security needs. You'll drive impact through enablement, automation, and practical risk reduction. Why this role matters You'll secure both what we build and how we work. That means embedding security into our products and CI/CD, and also supporting internal teams. Security here is not a gate; it's a force multiplier. You'll help engineering teams move faster safely, and ensure our colleagues have a secure foundation to do their best work. Success means faster, safer releases and fewer reactive security escalations. What will you do? As a Senior Security Engineer, your mission will be to: Partner with developers to embed security into design, build, and deploy stages Automate vulnerability triage and mitigation flows Secure CI/CD pipelines (GitHub, Jenkins) and execution environments (Kubernetes, Docker) Tune WAFs, manage cloud security (AWS, GCP, Azure), and evolve Terraform practices Support internal teams with secure production accesses, endpoint hardening, and access policies Lead security reviews across app, infra, and corporate environments Advocate for security standards with clarity and empathy You might be a fit if you: See security as an enabler of speed, not an obstacle Are comfortable in cloud and on-prem worlds Value autonomy, and naturally take ownership from idea to execution Can zoom out to prioritize risks and zoom in to fix root causes Communicate clearly with devs, ops, and business teams alike Eager to work in a technically challenging environment You'll grow by working with: Terraform, Docker, Kubernetes Modern security tools GitHub Actions, Jenkins AWS, Azure, GCP Teams building external-facing services (web apps, APIs) and internal platforms (CI/CD, admin tooling) to embed security by design. Supporting a public company environment with compliance requirements across multiple standards, including SOC 2 and ISO 27001 Skills that help (we'll support your growth): Application Security: code review, threat modeling, WAF CloudSec: IAM, policy-as-code, workload hardening On-Prem/Corporate: endpoint protection, monitoring and production access control Communication: making risk visible and actionable The Team Environment You'll join a cross-cultural, globally distributed security team that thrives on collaboration, curiosity, and continuous learning. We bring together a wide range of experiences and backgrounds to solve meaningful problems. We support each other through knowledge sharing sessions, workshops, and async collaboration. You'll have the chance to attend industry conferences, participate in internal guilds, and continuously sharpen your skills using our dedicated security training platform. How we work: Autonomy with alignment: own your work, stay connected to purpose Bias for action: ship, learn, improve Enablement mindset: security exists to empower teams, not slow them down Simple and pragmatic: perfect is the enemy of shipped https://job-boards.eu.greenhouse.io/teads1/jobs/4677295101

Blocksi Inc, . a leading company dedicated to creating secure and productive learning environments is looking for a talented Backend Developer to join our innovative team. As a Backend Developer at Blocksi, you will play a pivotal role in shaping the future of educational technology. You will work with a dynamic tech stack including Node.js, TypeScript or Express, MongoDB, Redis, Cassandra, Python, HTML, CSS, jQuery, Docker, Agile methodology, Jira, Git, and Google API. Develop and maintain server-side logic and integrate with front-end components. Design, implement, and maintain robust database systems, ensuring efficient data storage, retrieval and security. Create and maintain APIs to facilitate communication between different services and front-end applications. Monitor and optimize server performance, identifying and resolving bottlenecks. Implement security measures, including encryption, authentication, and authorization, to protect data integrity. Integrate third-party services and APIs to extend application functionality. Write clean, maintainable code and document the development process, code structure, and API endpoints. Diagnose and fix bugs, performance issues, and other problems in the application. Develop and execute unit tests, integration tests, and other testing protocols to ensure application robustness and reliability. Utilize version control systems like Git to manage and track changes in the codebase. Stay updated with the latest technologies, best practices, and industry trends to continuously improve skills and the application. Requirements: Bachelor Degree in Computer Science, Engineering, or a related field. Proven experience as a Backend Developer or similar role. Proficiency in server-side languages such as JavaScript, Node.js, Python, etc. Experience with database technologies like MySQL, PostgreSQL, MongoDB, Cassandra, etc. Strong understanding web services. Familiarity with front-end technologies and frameworks is a plus. Knowledge of security best practices and development. Excellent problem-solving skills and attention to detail. Strong communication and collaboration skills. Meaningful work, working on a product that ensures the safety of millions of students. Competitive Salary, based on knowledge and experience. Budget for education, courses, and conferences. Free coffee/snacks, team-building events, and a gym. Bonuses twice per year. Work in an office center Maribor. Mid Level: 2.500 - 3.300 € gross - based on knowledge and experiences Senior Level: 3.300 - 4.500 € gross - based on knowledge and experiences [email protected]

At Celtra, we are leading a creative revolution. In a world where digital content consumption is skyrocketing and audience expectations evolve daily, traditional production models can no longer keep up - and that's where we come in. Our creative solutions help media owners and operators monetize inventory more effectively, bridge the creative supply gap for brands and agencies, and deliver faster, smarter, and more personalized experiences. We're not just keeping up with industry shifts - we are setting the pace. Now, we are looking for a Software Developer Intern who will have an opportunity to work on our products, used by top companies and thousands of people on a daily basis. You will be joining one of our cross-functional teams and, with the support of our mentors, you will get your hands dirty by working on some interesting projects. 1. What tools do we use? On the backend, you can find Scala, NodeJS, PHP, MySQL, Spark, Snowflake, and also MongoDB, Kinesis. On the frontend, we use Vue.js, Typescript and Vanilla JS when needed. Everything runs on the AWS cloud, and the ECS cluster orchestrates it. We also love CI/CD, IaC and do daily deployments to ensure your contributions see the light of day as soon as the QA team is happy. We also actively embrace AI-assisted development with Cursor to boost productivity, iterate on PoCs and explore new ways of building software. 2. Your responsibilities: - Developing frontend and backend of our products that are used by top companies and thousands of people on a daily basis. - On the frontend you will be implementing rich experiences in our apps, participating in revamping the client-side architecture and general redesign of the product frontend. - On the backend you will mainly work on our APIs (REST, web sockets) and family of background jobs. - Making sure we maintain a high level of quality by writing automated tests. 1. Qualifications - Understanding of RESTful API architecture. - Knowledge of HTML5 and CSS. - Knowledge of JavaScript. - Knowledge of at least 1 backend programming language (Python, PHP, Ruby, Java, Go, Scala, etc.). - Good verbal and written English communication skills. - Willingness to constantly learn and improve. - Team player. - Active student status in Slovenia. 2. What brings extra points? - Knowledge of Vue.js. - Knowledge of global state management concepts. 1. Why Celtra? - Impact: Create high-quality digital work for leading global brands across a wide range of campaigns and formats. - Culture: We are inventive, collaborative, and proudly a little bit quirky - because doing great work should also be fun. - Flexibility: Hybrid with strong hubs in Ljubljana, London and New York, and team get-togethers that keep us connected. - Growth: You will learn from experienced team members and grow into bigger roles as you go. 2. What do we offer? - A buddy and a mentor that will help you grow professionally, plus a well structured onboarding / professional development plan. - Flexible working hours and hybrid work based on a fixed number of in-office days. - Top-notch working equipment. - Regular team & company events. - Free breakfasts & beverages available in the office. Apply here: https://celtra.com/careers/openings/#op-421095-software-developer-intern-

Hi there! Do you enjoy building and evolving complex backend systems that power products used around the world? Are you passionate about clean architecture, scalable solutions, and solving challenging technical problems? Do you enjoy collaborating with experienced engineers while having the freedom to propose improvements and shape the future of a platform? We're looking for a Senior Back-End Developer who will help us continuously improve and maintain our gaming platform, contribute to its long-term architecture, and support the development of new products and technologies. Does this sound like you? Keep reading. We might be a great match! Who are we? At GameArt, we are all about delivering high-quality online video slot games, developing for online casino operators in regulated markets around the world. Our international remote-first team crafts top-tier games with eye-catching graphics, innovative concepts, and cutting-edge tech, tailored to customers' preferences and markets. The key bits: - Location: +2/-2 CET time zone - Work setting: Remote-first - Start date: As soon as possible - Recruitment process: 1st Interview, Task, 2nd Interview, 3rd Interview, Offer - Your profile: An experienced backend engineer with strong Node.js expertise, architectural thinking, and a passion for building scalable, reliable systems. - Your goal: Continuously evolve and strengthen our backend platform by delivering secure, high-quality solutions that support both current products and future growth. - Your role: Design, develop, and maintain core backend services while collaborating across teams to solve complex technical challenges, improve platform architecture, and support new games, integrations, and internal tools. - What we offer to you: A remote-first, full-time role, long-term, growth opportunities, freedom without micromanagement, and a dynamic international team that values fresh ideas, collaboration, and fun gatherings. What you will do: - Designing, developing, and maintaining scalable backend services using Node.js and JavaScript - Contributing to the long-term architecture and continuous evolution of our platform - Working on complex backend systems that have evolved over multiple years and technologies - Supporting the integration of new games, game types, and platform features - Improving platform performance, reliability, scalability, and maintainability - Solving security challenges and helping ensure a secure platform - Performing code reviews and mentoring other developers through constructive feedback - Collaborating closely with game developers, frontend developers, DevOps, QA, Product, Support, Finance, and other teams - Supporting internal stakeholders by developing tools, features, and platform improvements - Troubleshooting production issues and contributing to bug fixing and platform stability - Evaluating and adopting modern engineering practices, including AI-powered development tools where they add value What kind of challenges will you solve: - Platform renewal and long-term platform evolution - Supporting new game mechanics and future game types - Solving security-related challenges - Building features requested by customers and partners - Supporting new integration types for new clients - Designing and developing internal tools and improving existing ones for departments such as Support, Finance - Maintaining a stable, high-performing platform while continuously modernising its architecture Are we a match? - At least 5 years of relevant backend development experience - Strong experience with Node.js and JavaScript - Experience designing scalable backend architectures and distributed systems - Solid understanding of backend application design and software architecture - Experience working with mature production systems and large codebases - Good knowledge of relational and NoSQL databases - Experience with code reviews, technical mentoring, and knowledge sharing - Understanding of security best practices for backend systems Your characteristics: - Resourceful, proactive, communicative - Curious and eager to learn - Creative and willing to challenge existing solutions - Comfortable sharing ideas and participating in technical discussions - A strong team player who enjoys collaborating across departments - Supportive of adopting AI where it genuinely improves engineering quality and efficiency - Comfortable taking ownership and driving improvements What is in IT for you? - Remote-first. Work whenever and wherever you find it best. The choice is yours. - We have offices in Slovenia (Nova Gorica, Ljubljana, Maribor), and Malta (St. Julian's). We'd like to see you come to the office from time to time. - Full time & long-term position. We are in it for the long run, offering an indefinite contract with 6-month probation period. - Enjoy autonomy and direct impact, there is no time for micromanagement. - Friendly, international, and multicultural environment. - Dynamic and fun work. We make games, it's never a dull moment. - We welcome new fresh ideas and different perspectives. - A collaborative and supportive culture focused on quality, innovation, and long-term success. - We like to meet up together at least two times a year, at an annual teambuilding and New Year's party. Ready to join the world of games? If you enjoy designing scalable backend systems, solving complex architectural challenges, and continuously improving platforms that power products used by players around the world, we'd love to hear from you! Fill in the short form here: https://tally.so/r/dWXA6A & we will get in touch with you soon. We are excited to connect with you!

Blocksi Inc, . A leading company dedicated to creating secure and productive learning environments is looking for a talented Full Stack Developer to join our innovative team. As a Full Stack Developer at Blocksi, you will play a pivotal role in shaping the future of educational technology. You will work with a dynamic teach stack including Node.js, MongoDB, PostgreSQL, Python, Vue.js, Docker, Git, ELK, AWS, and Google Cloud. Your responsibilities will include developing and maintaining robust, scalable, and efficient applications, contributing to architectural decisions, and collaborating with cross-functional teams to drive innovation. Design, develop, and maintain high-quality software solutions using our diverse tech stack. Collaborate with multidisciplinary teams to define software requirements and specifications. Participate in code reviews and provide constructive feedback to peers. Ensure applications are secure, scalable, and performant. Stay up-to-date with emerging technologies and industry trends. Requirements: Solid experience with Node.js, MongoDB, PostgreSQL, Python, Vue.js, Docker, Git, ELK, AWS, Google Cloud. Strong understanding of software engineering principles and design patterns. Proven track record of developing and deploying web applications. Familiarity with agile development methodologies. Excellent problem-solving skills and ability to work in a collaborative team environment. Passion for education technology and improving learning experiences. Meaningful work, working on a product that ensures the safety of millions of students. Competitive Salary, based on knowledge and experience. Budget for education, courses, and conferences. Free coffee/snacks, team-building events, and a gym. Bonuses twice per year. Work in an office center Maribor. [email protected]

Hi there! We are on the lookout for a DevOps/System Engineer, who will be the backbone of our IT infrastructure—ensuring our systems are secure, scalable, and always running at peak performance. A colleague who will support our teams by automating processes, maintaining cloud and on-prem environments, and ensuring a seamless and reliable tech foundation across the company. Sounds like you? On top of that, are you curious, detail-driven, and passionate about clean systems and smart automation—someone who thrives in dynamic environments and values clear documentation and teamwork? Keep reading below, and let's see if we are a match! Who are we? At GameArt, we are all about slot games, developing for online casino operators in regulated markets around the world. Our international remote-first team crafts top-tier games with eye-catching graphics, innovative concepts, and cutting-edge tech, tailored to customers' preferences and markets. The key bits: > Location: Ljubljana, Nova Gorica, Maribor> Hybrid work: A combination of remote and office work, as per agreement> Start date: As soon as possible > Recruitment process: 1st Interview, Tech Interview, Task, 3rd Interview, Offer > Your profile: Team player, proactive self-starter, problem-solver with strong knowledge of Windows and Linux systems, networking, scripting (Bash, Ansible), and experience with tools like VMware, Proxmox, Docker, Git, and Microsoft 365.> Your goal: To build and maintain a secure, reliable, and scalable IT infrastructure—supporting internal teams through automation, documentation, and proactive system management. > Your task: Configure and monitor on-prem and cloud systems (including AWS), manage networks (Cisco, MikroTik, Ubiquiti), support users, automate workflows, maintain security (TLS, SSH, firewalls), and collaborate across teams using tools like Jira and Bitbucket. > What we offer you: A flexible hybrid work setup, the chance to shape exciting game projects, a collaborative and multicultural team, professional growth opportunities, and a fun, dynamic work environment with regular team events. What you will do: > Set up, configure, and maintain software, hardware, and network infrastructure (on-premises and cloud). > Monitor, troubleshoot, and optimize system performance and reliability. > Provide day-to-day technical support to internal teams and resolve system-related issues. > Manage user access, workstation setups, and system permissions. > Ensure IT security through firewalls, access controls, backups, and policy enforcement.> Automate and improve infrastructure and deployment workflows using scripting and tools like Ansible and Git. > Maintain technical documentation, internal wikis, and support materials. > Upgrade and patch systems, services, and applications as needed. > Collaborate with development and IT teams on DevOps best practices.> Contribute knowledge sharing and assist in onboarding new technologies and tools. Are we a match? Client-Side: > Strong knowledge of Windows client systems (Windows 10, 11) > Basic familiarity with macOS > Experience with Microsoft 365 (Exchange, SharePoint) > Knowledge of Microsoft Intune and Microsoft Defender Networks, Servers & Infrastructure: > Solid understanding of networking fundamentals > Experience with Cisco CLI switches or similar > Familiarity with MikroTik RouterOS and SwitchOS > Experience with pfSense and Ubiquiti network devices > Knowledge of enterprise-grade hardware (HP, Dell, Supermicro) > Experience with storage systems such as HP MSA, NetApp, or Ceph > Proficiency in Linux-based systems (Debian, Ubuntu) > Hands-on experience with virtualization platforms (VMware, Proxmox) and containerization (Docker) > Basic knowledge of AWS or other cloud providers > Experience with monitoring tools (Zabbix, Elastic, or similar) > Ability to script and automate tasks (Bash, Ansible)> Familiarity with version control tools (Git) Databases & Security: > Basic understanding of databases (Redis, SSDB, MongoDB, PostgreSQL) > Awareness of security best practices (TLS certificates, SSH, firewalls) > Ability to analyze and troubleshoot using system logs (syslog, journalctl) Web & Development Collaboration: > Understanding of basic web server concepts (Nginx, DNS, CDN) > Experience with Git, Bitbucket, and Jira (permissions, pull requests, webhooks) > Basic familiarity with JavaScript applications and their structure PS: Don't worry if you don't tick every box – we value motivation, curiosity, and a willingness to grow just as much as experience. Your characteristics: > Proactive problem-solver. You anticipate issues and act before they escalate > Detail-oriented and structured. You manage complex systems with precision and clarity > Security-minded. You understand the importance of protecting infrastructure at every layer > Collaborative communicator. You work well across teams and explain technical topics clearly. > Curious and eager to learn. Tech evolves fast, and you're always up for mastering new tools and concepts. WHAT'S in IT for you? > Remote-first. Combination of remote work and occasional work from the office and driving to our data centers. > We have offices in Slovenia (Nova Gorica, Ljubljana, Maribor). We'd like to see you come to the office from time to time. > Full time & long-term position. We are in it for the long run, offering an indefinite contract with 6-month probation period. > Enjoy autonomy and direct impact, there is no time for micromanagement. > Friendly, international, and multicultural environment. > Dynamic and fun work. We make games, it's never a dull moment. > We welcome new fresh ideas and different perspectives. > Gain hands-on experience and skills in managing the full cycle of game development. > We organize yearly teambuilding, and other fun gatherings such as Easter party, New Year's party,… Ready to join the world of games? If building the tech behind games excites you, we'd love to hear from you! Fill in the short form here: https://tally.so/r/lbJrGX & we will get in touch with you soon. We are excited to connect with you!

We're building something that doesn't exist yet: an AI immune system for humans. The Umanitek Guardian Agent protects people from deepfakes and digital impersonation by combining intelligence with systems built for verification and scale. If you're excited by the idea of building reliable platforms and backend systems for agents that reason, not just predict, you'll feel right at home. As a Platform Engineer, you'll build and operate the platform powering the Guardian Agent ecosystem. You'll work across backend engineering and infrastructure, building production-ready services while ensuring they can be deployed, monitored, and scaled reliably. Your primary focus will be developing backend services, REST APIs, MCP tooling, and agent runtimes using Node.js and TypeScript. You'll also own key parts of the platform layer: CI/CD pipelines, cloud environments, deployments, observability, and infrastructure automation. This is a hands-on role where ownership and systems thinking matter. You'll help ensure Guardian services are secure, scalable, observable, and easy for the team to evolve. Responsibilities -Build and maintain backend services, REST APIs, MCP servers, and agent tooling using Node.js and TypeScript -Design and operate cloud infrastructure on AWS -Own CI/CD pipelines, deployments, release workflows, and production environments -Build and maintain containerized services using Docker and infrastructure automation tools -Ensure reliability through monitoring, logging, alerting, performance optimization, and security best practices -Troubleshoot production issues across application and infrastructure layers -Collaborate on architecture decisions around AI agents, decentralized systems, and scalable production infrastructure Technical Experience -4+ years of experience in Backend Engineering, Platform Engineering, DevOps, or Infrastructure Engineering -Strong Nest.js, TypeScript and Node.js experience building production backend services -Experience with REST APIs, Express, Nest.js, and microservice architectures -Experience deploying and operating production systems in cloud environments (AWS, DigitalOcean, or GCP) -Strong experience with Docker, CI/CD pipelines, and infrastructure automation concepts -Experience with monitoring, logging, and production troubleshooting -Solid understanding of databases, networking, Linux systems, and security fundamentals Nice to Have -Familiarity with Turborepo and monorepo workflows -Experience with MCP tooling, AI/LLM applications, or agent-based systems -Experience with Docker or advanced container orchestration -Experience with Terraform or infrastructure-as-code workflows -Experience with distributed systems, event-driven architectures, or background workers -Familiarity with decentralized systems or knowledge graph technologies Why Umanitek We're early, lean, and ambitious. You'll work directly with founders and researchers behind OriginTrail and Umanitek, helping build the foundation of AI safety infrastructure used by public institutions, enterprises, and individuals. If that sounds like your kind of hard — come build with us. We offer a market-aligned salary, participation in the employee stock option pool, and clear opportunities to grow into senior and leadership roles as the company scales. Final employer: Umanitek ag Approximate salary: 4000-6000EUR Apply: If interested, please send your CV to [email protected] or apply via our website.