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December 17, 2025
Senior • Hybrid
$32,000 - $42,000/
Warsaw, Poland
Backend Java Developer (with Frontend tasks)
We are looking for a strong Java backend engineer experienced with Spring and Kafka. The role may include 10–20% frontend involvement (mainly code review), or can be fullstack for candidates with React/Angular skills. The position is heavily backend-focused. Experience in Trading or Reporting is a plus.
Responsibilities
Build and maintain backend services using Java, Spring, Hibernate.
Work with relational databases (T-SQL, SQL Server).
Develop solutions involving streaming, cloud, and containerized technologies.
Provide occasional support for frontend work (JavaScript/TypeScript, React).
Participate in architecture discussions and collaborate with other tech teams.
Requirements
4+ years of experience in Java development.
Strong skills in Java, Spring Framework, and SQL.
Experience with Kafka.
Good communication and problem-solving abilities.
Proactive, reliable, and committed to high standards.