Backend Developer
Summary
Backend Developer in Warsaw building and maintaining backend services and RESTful APIs for client-facing portal applications using Java or .NET (Spring Boot / .NET Core). Day to day involves data modeling, Docker/Kubernetes/OpenShift deployments, testing and CI/CD, performance tuning, on-call support, and Agile collaboration.
We are seeking a Backend Developer to design, build, and maintain robust, scalable
backend services and APIs powering Client facing Portal applications. The ideal
candidate has strong object-oriented development skills, experience with
containerized/cloud-native deployment, and the ability to collaborate closely with front-
end teams to deliver well-integrated, performant solutions.
What will your tasks involve?
- Develop and maintain backend services and RESTful APIs using Java or .NET.
- Design data models and integrate with relational/NoSQL databases as required
by portal functionality. - Collaborate with front-end developers to define API contracts and ensure smooth
integration. - Build and deploy services within containerized environments
(Docker/Kubernetes/OpenShift). - Implement secure coding practices, unit/integration testing, and CI/CD pipeline
integration. - Optimize service performance, scalability, and reliability.
- Troubleshoot and resolve production issues, participating in on-call/support
rotations as needed. - Participate in Agile ceremonies, sprint planning, and technical design
discussions.
What we expect from you?
- Strong Java or .NET development experience (Spring Boot / .NET Core
preferred). - Experience building and consuming REST APIs.
- Experience with containerized applications and orchestration
(Docker/Kubernetes/OpenShift). - Working SQL/database experience (relational data modeling, query optimization).
- Familiarity with CI/CD pipelines and automated testing practices.
- Nice-to-Have: experience with messaging/event-driven architectures (Kafka, MQ, etc.), financial services, fund administration, or transfer agency domain experience, exposure to cloud-native development practices.
What you can expect from us?
- Contract Stability
- High level of autonomy and independence
- Senior role: The chance to act as a Backend Developer
- Participation in key projects
- International collaboration: Building and cultivating partnerships across various business regions
Employment agency entry number 47
this job offer is intended for people over 18 years of age