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Senior Backend Engineer – Microservices & API Integration

Senior Backend Engineer – Microservices & API Integration

BRAVER IT SPÓŁKA AKCYJNAKraków, Lesser Poland, Poland
8 days ago
Job description

technologies-expected :

  • Python
  • Java
  • PostgreSQL
  • MongoDB
  • Redis

about-project :

  • We’re looking for a seasoned backend engineer who will help design and develop modern, secure APIs and microservices used by thousands of partners and clients. You’ll play a key role in improving developer experience, scalability, and performance across the platform.

    • responsibilities :

  • Develop and maintain microservices and SDKs in Python, Java, or Go.
  • Refactor and improve existing APIs for better performance and maintainability.
  • Automate testing : unit, integration, and contract tests using tools like pytest, JUnit, Postman / Newman.
  • Build and manage CI / CD pipelines with GitHub Actions, GitLab CI, or Jenkins.
  • Deploy services in Kubernetes, and monitor them using OpenTelemetry, Prometheus, Grafana.
  • Participate in code reviews, documentation (Markdown, Swagger-UI), and quality standards.
  • Collaborate with frontend, DevOps, and product teams to ensure seamless delivery.

    • requirements-expected :

  • 5+ years of experience building production-ready APIs and microservices.
  • Solid skills in at least two of these languages : Python, Java, Go.
  • Deep understanding of HTTP, REST, versioning, error handling, and security (JWT, mTLS).
  • Experience with both relational and NoSQL databases like PostgreSQL, MongoDB, Redis.
  • Strong focus on automated testing, clean code, and maintainability.
  • Fluency in English (written and spoken) sufficient for technical collaboration and documentation.

    • offered :

  • 100% remote work.
  • Opportunity to influence technical strategy and architecture decisions.
  • Collaborative, inclusive, and international work culture.
  • Competitive salary and a comprehensive benefits package.

    • benefits :

  • sharing the costs of sports activities
  • life insurance
  • remote work opportunities
  • flexible working time
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    Senior Backend Engineer • Kraków, Lesser Poland, Poland