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Deutsche Telekom Digital Labs

Posted 27 Aug 2026

Senior Software Development Engineer in Test

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Employment
Full time
Team
Software Engineering
Posted
27 Aug 2026

About the role

We are looking for a Senior Software Development Engineer in Test (SDET) with strong expertise in API Automation Testing to ensure the quality, reliability, and performance of enterprise-grade backend applications and microservices. The ideal candidate should have hands-on experience in designing scalable automation frameworks, API validation, and integrating automated testing into CI/CD pipelines.


Responsibilities:

  • Design, develop, and maintain robust API automation test frameworks.
  • Create and execute automated test cases for REST APIs and Microservices.
  • Validate API functionality, performance, reliability, and security.
  • Collaborate with developers, product managers, and QA teams to ensure high-quality releases.
  • Perform regression, integration, and end-to-end API testing.
  • Identify, debug, and track defects through to resolution.
  • Integrate automation test suites into CI/CD pipelines.
  • Participate in code reviews and continuously improve test automation practices.


Requirements:

  • 5+ years of experience in Software Testing with a strong focus on API Automation.
  • Hands-on experience with API automation tools such as Rest Assured, Postman, Karate, or similar frameworks.
  • Strong programming skills in Java.
  • Experience testing REST APIs and Microservices.
  • Good understanding of API authentication methods (OAuth, JWT, Basic Auth).
  • Experience with SQL databases and API validation.
  • Hands-on experience with Git and version control.
  • Strong debugging, analytical, and problem-solving skills.


Good to Have:

  • Experience with Selenium or UI Automation frameworks.
  • Knowledge of Docker, Kubernetes, and containerised environments.
  • Experience with Jenkins, GitHub Actions, or other CI/CD tools.
  • Exposure to cloud platforms such as AWS, Azure, or GCP.
  • Experience with performance testing tools like JMeter or Gatling.
  • Familiarity with Agile/Scrum development methodologies.

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