Mid/Senior Java Backend Engineer — Insurance

TechTree; Kraków; Hybrid; PLN 254,000 - 304,000; Full time

Benefits offered by this job

Private medical care (Allianz)

Multisport cafeteria package

Training / conference budget

Job summary

TechTree is recruiting for a Mid/Senior Java Backend Engineer on behalf of a client in the insurance sector. The role is based in Poland with hybrid work in Kraków, Gdańsk, Łódź, or Poznań.

You will work in an international team supporting scalable, enterprise-grade platforms that handle financial settlements, accounting, and claims modules. We seek a candidate with 5+ years Java/Spring Boot experience and strong REST API design skills.

Qualifications

• 5+ years of commercial Java/Spring Boot experience.
• Strong REST API design skills.
• English B2+ and Polish A1/A2.

Responsibilities

• Design and develop backend services in Java (Spring Boot) for financial settlement, accounting, investment fund, and claims-handling modules.
• Build and maintain high-performance REST APIs and integrations with external providers.
• Own architecture and code quality—Clean Code, design patterns, code review.

Skills

Java

Spring Boot

REST APIs

English (B2)

Job description

TechTree is recruiting for on behalf of one of our clients.

TechTree is an AI-driven recruitment platform working with high-growth companies.

When you apply, our AI Agent matches you not just to this role, but to other relevant opportunities across our network, so one application can unlock multiple roles.

Mid/Senior Java Backend Engineer — Insurance — Build scalable Enterprise platforms for global insurance. Hybrid, Poland (Kraków / Gdańsk / Łódź / Poznań).

Join an international team (Scandinavia / Belgium / Poland) building proprietary, scalable Enterprise-class platforms for the global insurance sector, processing millions of operations a month across the full policy lifecycle and claims settlement — including financial settlement, accounting, investment fund, and claims modules.

We're looking for an experienced Java Backend Engineer (5+ years) with a strong backend foundation and openness to gradually growing into Angular/frontend work over time.

What You'll Do

• Design and develop backend services in Java (Spring Boot) for financial settlement, accounting, investment fund, and claims-handling modules.
• Build and maintain high-performance REST APIs and integrations with external providers.
• Own architecture and code quality — Clean Code, design patterns, code review.

What We're Looking For

• 5+ years of commercial Java/Spring Boot experience and strong REST API design skills.
• English at B2 level or higher, Polish at A1/A2 level.
• Openness to AI-assisted programming (Spec Driven Development).
• Up to 25,000 PLN gross (UoP) or B2B equivalent, plus private medical care with Allianz, a Multisport cafeteria package, and an individual training/conference budget.

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