Backend Developer

Opis klienta

We're currently looking for specialists for the position of Backend Developer for our client - major telecommunications provider.

If you're interested, please take a look at the job offer below.

What can we offer?

• Employment contract or B2B contract
• Work mode: Hybrid in Warsaw (1-2 days per week from office)

Profil kandydata

• Java Backend Experience:
• Mid: 4+ years
• Senior: 6+ years of commercial backend development
• API & Integration Expertise
• Experience designing REST APIs
• OpenAPI and integrating multiple systems
• Event-Driven Architecture
• Understanding of asynchronous flows, messaging concepts and distributed systems
• Testing Discipline
• Experience with unit and integration testing, quality-focused mindset
• Resilience & Observability
• Experience with monitoring, logging, troubleshooting and reliability practices
• Java & Spring Boot
• Strong knowledge of Java 21+ and Spring Boot 3.x
• Language Skills English B2+ (mandatory) for technical documentation and collaboration

Zakres odpowiedzialności

• Production-Grade Engineering: Strong Java 21+ and Spring Boot 3.x experience, building scalable, reliable and maintainable services.
• API & Integration Expertise: Designing REST APIs and integrating multiple internal and external systems
• Event-Driven Architecture: Experience with asynchronous flows, messaging concepts and distributed systems
• Migration Readiness: Node.js / TypeScript knowledge supporting ongoing technology transformation
• Quality, Security & Operations: Testing mindset, observability, resilience and production troubleshooting