October 9, 2026

Senior Java Backend Developer (REST API & OpenShift)

Senior • Remote

19,950 - 23,730 PLN/yr

Warsaw, Maz, Poland

Quick Facts

  • Role: Senior Java Backend Developer (REST API & OpenShift)

  • Focus: Banking REST APIs for omnichannel platforms

  • Model: Hybrid

Description

You will develop and optimize REST API services supporting internet, mobile, and branch backoffice banking platforms. The role involves implementing scalable backend solutions and maintaining existing systems with an emphasis on stability and security. You will also troubleshoot complex issues, contribute to architecture standards, and support CI/CD delivery pipelines.

Responsibilities

  • Develop and optimize REST API services for multi-channel banking platforms

  • Collaborate with cross-functional teams on API integration aligned to business needs

  • Implement scalable backend solutions using OpenShift, Spring Boot, Kafka, Redis, MongoDB, and other modern technologies

  • Maintain and improve existing systems for stability and security

  • Troubleshoot and resolve complex technical issues

  • Write clean, well-documented code following best practices

  • Contribute to architecture design and technical standards

  • Support continuous integration and deployment pipelines

Requirements

  • At least 5 years of proven Java backend development experience

  • Strong expertise in Spring Boot, Kafka, Redis, and MongoDB

  • Experience with OpenShift or similar container orchestration platforms

  • Solid understanding of REST API design and implementation

  • Excellent problem-solving skills and attention to detail

  • Polish (good command) and English (communicative level)

Benefits

  • Long-term collaboration opportunity to innovate in banking technology and omnichannel digital finance

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