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Senior Software Engineer - Java

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Location:
Poland , Warsaw

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Category:
IT - Software Development

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Salary:

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Job Description:

The Senior Java Engineer is an elite, hands on builder responsible for designing, building, and operating production grade backend services that power Commerce Media's platform. This role focuses on delivering reliable, scalable, and maintainable Java services using Spring Boot, with a strong emphasis on API driven workflows and well structured CRUD systems. Senior Java Engineers operate under the architectural direction of an Engineering Lead while owning complex implementations end to end. Success is measured by the quality, performance, and correctness of the systems they deliver.

Job Responsibility:

  • Design, implement, and maintain Spring Boot–based backend services supporting CME platform capabilities
  • Build and evolve API first services that expose clean, well documented interfaces for frontend and partner integrations
  • Implement robust CRUD workflows backed by well modeled relational and/or NoSQL data stores
  • Own services end to end, including: Data modeling and persistence
  • API design and versioning
  • Error handling and validation
  • Performance optimization and reliability
  • Write comprehensive unit and integration tests to ensure correctness and regression safety
  • Collaborate closely with Frontend, Platform, and Data engineers on API contracts and data flows
  • Participate in design reviews, code reviews, and production support activities
  • Contribute to shared engineering standards around observability, security, and maintainability

Requirements:

  • 5–7 years of professional experience building backend systems in Java
  • Strong expertise with Spring Boot and related ecosystem tools
  • Proven experience building CRUD based applications with clean data models and persistence layers
  • Hands on experience designing and implementing RESTful, API driven workflows
  • Solid understanding of relational databases, ORMs, and query optimization
  • Experience with containerized deployments (Docker) and exposure to Kubernetes environments
  • Familiarity with observability practices (logging, metrics, tracing)
  • Experience operating and supporting services in production environments

Additional Information:

Job Posted:
April 16, 2026

Employment Type:
Fulltime
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