Senior Backend Developer (Java)

DCG

Warsaw, Poland • 30m ago • On-site

Senior

On-site

160 - 180 PLN/yr

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Quick Facts

  • Role: Senior Backend Developer (Java)

Description

Design, develop, and maintain backend services and RESTful APIs using Java and Spring Boot. You will build scalable solutions with robust data modeling, testing, CI/CD automation, and container-based deployments, while supporting production issues and optimizing performance.

Responsibilities

  • Design, develop, and maintain backend services and RESTful APIs using Java and Spring Boot
  • Build scalable, reliable, high-performance backend solutions for client-facing applications
  • Design data models and integrate services with relational and NoSQL databases
  • Collaborate with front-end developers to define API contracts and ensure seamless system integration
  • Develop and deploy applications in containerized environments using Docker and Kubernetes or OpenShift
  • Apply secure coding standards and software engineering best practices
  • Create and maintain unit and integration tests
  • Integrate applications with CI/CD pipelines and automated deployment processes
  • Monitor and optimize application performance, scalability, and reliability
  • Troubleshoot technical and production issues and support their resolution
  • Participate in technical design discussions, sprint planning, code reviews, and other Agile activities

Requirements

  • 8+ years of professional backend software development experience
  • Strong commercial experience with Java
  • Hands-on experience with Spring Boot
  • Strong experience designing and developing REST APIs
  • Experience with Docker and container orchestration platforms such as Kubernetes or OpenShift
  • Good knowledge of SQL and relational databases, including data modeling and query optimization
  • Experience with automated testing, including unit and integration testing
  • Familiarity with CI/CD pipelines and modern software delivery practices
  • Strong understanding of object-oriented programming and software engineering principles
  • Ability to work effectively in cross-functional Agile development teams
  • Fluency in English, both written and spoken

Nice to have

  • Experience with event-driven or messaging architectures (e.g., Kafka or MQ)
  • Experience with cloud-native application development
  • Knowledge of NoSQL databases
  • Experience within financial services, fund administration, or transfer agency environments

Benefits

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