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April 24, 2026

Junior Java Developer (Backend)

Junior • Hybrid

60 - 90 PLN

Warsaw, Poland

Junior Backend Java Developer

Location: Warsaw, Poland (hybrid – 2 days/week in the office)

About the Role

We’re looking for a Junior Backend Java Developer to join a team building scalable, modern backend systems for international products. You’ll work in a collaborative environment with a strong focus on learning, ownership, and quality.

Responsibilities

  • Develop and maintain backend applications using Java 17+ and Spring Boot

  • Ensure performance, scalability, and security of solutions

  • Work with SQL databases (e.g. PostgreSQL)

  • Support deployments using Docker, Kubernetes, and Helm

  • Use Bash/Shell for automation tasks

  • Collaborate in Agile (Scrum) teams and communicate in English

Requirements

  • Java 17+, Spring / Spring Boot / Spring Security

  • Maven, SQL, Git (GitHub, CI/CD basics)

  • Experience with unit testing

  • English B2/C1

  • Around 2 years of commercial experience

Nice to Have

  • PostgreSQL, Hibernate/JPA

  • Kubernetes, Helm

  • Kafka, microservices

  • Bash/Shell or Python

  • CI/CD tools, JIRA

  • Monitoring tools (Grafana, Prometheus)

  • Security basics (OWASP)

Qualifications

  • Degree in Computer Science or related field