Middle Full-stack Developer

We’re looking for an experienced, hands-on Full-stack Developer with an interest in back-end technologies to join our growing team in Gdańsk, Poland. In this role, you’ll work across the full stack, developing and delivering features on both the back end and front end. We’re looking for someone who has practical, hands-on experience with both areas and is comfortable taking ownership of end-to-end development. You’ll be part of an ambitious, collaborative product team working with a modern tech stack and agile delivery practices. Working closely with UX/UI designers, Product Managers, QAs, and fellow engineers, you’ll contribute to building and shipping high-quality features that are scalable, maintainable, and user-friendly. If you enjoy working across the full stack, have hands-on experience - we’d love to hear from you. What You’ll Be Doing Building and running the C#/. NET services behind ABAX's fleet management platform, from processing vehicle telemetry to powering what customers see in the web app. Working with vehicle data end to end: Kafka streams, PostgreSQL and MongoDB, analytical queries over hundreds of thousands of assets. Building customer-facing AI featuresMaking changes to customer-facing web features in Vue 3 and TypeScript. Using AI tools every day to write, review, and understand code. Owning your changes all the way to production: code review, GitLab CI/CD, and deployment to Kubernetes. What We’re Looking For 3+ years of professional experience with C# and modern . NET. Experience building and maintaining REST and gRPC APIs. Experience with relational and document databases. We run PostgreSQL, MongoDB and SQL Server. Experience with event streaming in production, Kafka or similar. Comfortable making changes in a Vue 3 and TypeScript codebase, or in React or Angular with a willingness to switch. Hands-on use of AI coding assistants in your daily work, and a view on where they help and where they don't. Clear communication in both Polish and English. Nice to Have You've built something with LLMs, at work or on the side, and you're curious how to make AI features that customers actually trust. Agent tooling: MCP servers, evals, or internal AI developer tooling. Elasticsearch or another search engine at scale. A cloud platform, preferably GCP. Observability tooling: logs, metrics, tracing, for example Datadog. Don’t feel like you tick every box? If you’re still at an earlier stage of your career but have relevant hands-on experience, a strong learning mindset, and the right attitude, we’d still love to hear from you. Other Details Start date: As soon as possible Location: Gdańsk, Poland Work extent: Full-time Background Check and Reference Verification: Successful employment is contingent upon ABAX receiving satisfactory references. As part of our hiring process, we perform a digital reference check through RefApp, an advanced online solution for managing this procedure. Please be aware that a background check may be conducted simultaneously with the reference check. Equal Opportunities At ABAX, we are dedicated to creating an inclusive environment for all our colleagues. This commitment extends to ensuring that our recruitment practices and processes are as inclusive as possible. We encourage applicants from all backgrounds to join us in strengthening our focus on equality and diversity in the workplace. About ABAX ABAX is a leading European telematics IoT platform offering connected mobility solutions for vehicle tracking, tool tracking, and equipment control. Our mission is to deliver mobility data insights that empowers people to do more with less. With over 500,000 tracked assets and 40,000 customers, ABAX delivers reliable and powerful solutions for businesses relying on physical operations. Our advanced platform transforms customer needs into actionable insights and automated reporting, driving efficiency and operational excellence. We operate across Europe, with over 350 employees working from our facilities in Norway, Sweden, Denmark, Finland, the Netherlands, Belgium, Poland, and the UK. Our Head Office is in Larvik, Norway.