Senior Java Engineer

At KUBO, we’re looking for a Senior Java Engineer to join a long-term modernization program for one of our clients in the financial sector. This role is focused on API design and backend development, as part of a broader architectural transformation effort.

As a consultant, you’ll work remotely from Poland in an international Agile team, helping shape a global platform used by CFOs and finance teams around the world.

Key responsibilities

• Design and implement OpenAPI contracts to support scalable service development

• Build and maintain backend services in Java and Spring Boot

• Contribute to architectural improvements and API-first development workflows

• Deploy and manage services in Kubernetes environments

• Collaborate with cross-functional teams to ensure robust, high-performing solutions

• Troubleshoot production issues and improve system reliability

• Contribute to improving team practices, code quality, and documentation

Ideal candidate profile

• 5-8 years of experience as a Java developer, working with Spring Boot

• Proven experience designing and implementing OpenAPI/REST contracts

• Experience deploying to and working with Kubernetes

• Familiar with microservices architecture and containerized environments

• Nice to have: experience with JBoss, EclipseLink, Oracle

• Comfortable working in distributed teams with strong communication skills

• Fluent in Polish and English (spoken and written)

Conditions

• Location: Remote from Poland

• Contract type: B2B

• Duration: Until end of 2026 (possible extension)

• Salary: 140-210 PLN/h, negotiable, depending on experience

• Benefits: Private medical care, life insurance, trainings, Multisport card

Recruitment steps

1. Introductory call with a KUBO recruiter

2. Technical interview with the client team

3. Offer & onboarding