Senior Java Engineer

Are you ready to design reliable backend systems and solve real-world problems in financial software?

At KUBO, we’re looking for Senior Java Engineers to join a long-term backend project for one of our clients in the financial sector. This role is focused on building and evolving large-scale, mission-critical financial systems where reliability, security, and clear architecture are key.

As a consultant, you’ll collaborate with an international Agile team, fully remote from Poland, and play an important role in shaping backend services that support complex banking and payment workflows.

Key responsibilities

• Design and implement scalable backend systems using Java and Python

• Build and evolve microservices running on Kubernetes and AWS

• Contribute to the architecture of large-scale financial systems

• Work with banking and integration protocols such as SWIFT, EBICS, and SFTP

• Collaborate closely with architects, developers, and business stakeholders

• Ensure high code quality, system reliability, and security standards

• Share knowledge, mentor others, and support engineering best practices across the team

Ideal candidate profile

• 8+ years of experience in enterprise software development

• Strong expertise in Java and Python

• Hands-on experience with Kubernetes, microservices, and AWS

• Proven experience designing or contributing to large-scale financial or banking systems

• Practical knowledge of banking protocols such as SWIFT, EBICS, and SFTP

• Strong communication skills and ability to work with technical and non-technical stakeholders

• Leadership mindset with experience mentoring or guiding other engineers

• Bachelor’s degree in Computer Science or a related field

Conditions

• Location: Remote from Poland

• Contract type: B2B

• Duration: Until end of 2026 (with possible extension)

• Salary: 180-220 PLN/h

• Benefits: Private medical care, life insurance, Multisport card, training budget

Recruitment steps

• Call with a KUBO recruiter

• Interview with the client (online, 75-90 minutes)

• Offer & onboarding