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Deutsche Telekom Digital Labs

SDET

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Description

We are looking for a passionate SDET / Senior SDET to join our engineering team and drive quality through robust API automation. The ideal candidate should have strong hands-on experience in Java and REST Assured, with a proven track record of building scalable API automation frameworks in a product-based environment. This role requires someone who can collaborate closely with developers, product managers, and DevOps teams to ensure the delivery of high-quality, reliable, and secure applications.


Responsibilities:

  • Design, develop, and maintain scalable API automation frameworks using Java and REST Assured.
  • Develop and execute automated test suites for REST APIs and microservices.
  • Validate APIs using OpenAPI/Swagger specifications and implement contract testing practices.
  • Integrate automated test suites into CI/CD pipelines to enable continuous testing.
  • Design effective test data management strategies for automation.
  • Validate authentication and authorisation flows, including OAuth2 and JWT-based APIs.
  • Work closely with engineering teams to identify, reproduce, and resolve defects.
  • Contribute to automation best practices, code reviews, and continuous quality improvements.
  • Ensure high test coverage, reliability, and maintainability of automation frameworks.


Requirements:

  • 4-8 years of experience in software testing/quality engineering.
  • Strong programming skills in Java.
  • Extensive hands-on experience with REST Assured for API automation.
  • Solid experience in API testing using Postman.
  • Good understanding of RESTful APIs, HTTP protocols, and JSON/XML.
  • Experience with OpenAPI validation and API contract testing.
  • Hands-on experience integrating automation into CI/CD pipelines.
  • Experience with Test Data Management.
  • Good understanding of OAuth2 and JWT authentication testing.
  • Strong analytical, debugging, and problem-solving skills.
  • Excellent communication and collaboration abilities.


Preferred Skills:

  • Experience with Cucumber (BDD).
  • Performance testing using JMeter, Gatling, or k6
  • Basic knowledge of API security testing.
  • Experience with WireMock or API mocking tools.
  • Exposure to consumer-driven contract testing (e. g., Pact).
  • Experience working with cloud-native applications and microservices architecture.

Skills

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