Senior API Engineer

Our client works on very challenging and exciting projects and is looking for a Senior API Engineer

Skills and Experience:

Strong proficiency with Python and FastAPI framework (routing, dependency injection, middleware, async/await programming). Deep understanding of RESTful API design, architecture, versioning, HTTP protocols, Pydantic validation, and Pytest. Experience with OIDC / OAuth 2.0, and integrating third-party APIs. Knowledge of distributed systems, inter-service communication, API gateways, and load balancing. AWS familiarity — ECS, ECR, CloudWatch, Secrets Manager, ElastiCache, DynamoDB. Understanding of CI/CD pipelines, horizontal scaling, and fault tolerance. Strong collaboration and problem-solving skills across cross-functional teams.

Further Information:

Duration: Long term contract (B2B) Workload: Remote


  • Location: Bucharest, Romania
  • Type: Contract
  • Recruiter: Cavendish Professionals
  • Posted: 05-Nov-2025
  • Posted on: careers4a.com