Junior Java Developer (Backend)

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