We are looking for a Mid/Senior Fullstack Engineer to join the insurance division of a large Polish software company. This is a true fullstack role: you will build both the Java/Spring Boot backend services and the Angular frontend of in-house platforms used by insurers in Poland and abroad. The platforms cover the full policy lifecycle and claims handling and process millions of operations every month. You will work in an international team with colleagues from Scandinavia, Belgium and Poland, on modules such as financial settlement, accounting, investment funds and claims. The team works in a Spec Driven Development model with AI agents, using them for specs, planning, documentation and tests. This role suits an engineer who has shipped real production code on both sides of the stack and wants to work on large, business-critical systems.
Details:
Schedule: Full time
Location: Hybrid – Kraków, Gdańsk, Łódź or Poznań, Poland (3 days in the office, 2 remote; more office time during onboarding, up to 3 months)
Start: ASAP
Duration: Long-term
English: Upper-Intermediate (B2)
Polish: Elementary (A2) or higher
Type of collaboration: Internal Employment (UoP) or B2B Contract – your choice
About the project: The company is one of the largest software vendors in Poland. Its insurance division builds its own platforms for insurance companies in Poland and other European markets. These systems support the whole policy lifecycle, from product setup and sales to policy servicing and claims processing. They handle millions of operations a month, so performance, reliability and data accuracy really matter. The division is growing fast and is adding engineering teams in several Polish cities. Teams are international and work closely with business analysts and insurance domain experts. Engineering is moving toward structured, AI-assisted development, where AI agents support specs, planning, documentation and testing.
You have:
4+ years of commercial software development experience
Strong experience with Java (21+) and Spring Boot in production systems
Experience designing and building REST APIs
Hands-on commercial experience with Angular (ideally recent versions) and TypeScript: you have written and shipped Angular code yourself, not only worked next to frontend developers
Experience with MongoDB and/or PostgreSQL
Structured use of AI tools in development (specs, planning, tests), not only autocomplete
Polish at A2 level or higher (everyday conversation), as some teams work in Polish
English at B2 level (team communication and technical documentation)
Legal right to work in Poland (e.g. Karta Pobytu, permanent residence or EU citizenship)
Readiness to work from the office in Kraków, Gdańsk, Łódź or Poznań 3 days a week
Nice to have:
Experience in the insurance, banking or fintech domain
Experience with microservices, event-driven architecture (Kafka), sagas or DDD
What to do:
Build and maintain backend services in Java 21+ and Spring Boot for insurance platforms
Develop Angular frontend features end to end, from UI components to integration with backend APIs
Design and implement REST APIs and work with MongoDB and PostgreSQL databases
Work on business modules such as financial settlement, accounting, investment funds and claims
Use AI agents in a Spec Driven Development process to write specs, plan work, document solutions and create tests
Collaborate with an international team (Scandinavia, Belgium, Poland), business analysts and domain experts
Take part in code reviews and help keep code quality high across the stack
Help improve the performance and reliability of systems that process millions of operations a month
