Software Development Engineer in Test (SDET) Lisboa

Overview / Summary

We are looking for a Software Development Engineer in Test (SDET) to strengthen the quality of our partners platform by building scalable test automation and tooling with a strong focus on backend services and APIs. You will work alongside engineers, product managers, and Dev
Ops to ensure every release is reliable, observable, and tested
-
- end.

Responsibilities and Tasks

• Design and implement automated API and integration tests for backend microservices;
• Develop reusable test frameworks and libraries in collaboration with backend engineers;
• Maintain test coverage across multiple services, ensuring data consistency and reliability;
• Contribute to CI/CD pipelines, integrating automated tests to run at every stage (build, deploy, release);
• Investigate and reproduce complex backend issues, analyzing logs, metrics, and traces to isolate root causes;
• Continuously improve test infrastructure and tooling with a focus on scalability and maintainability.

Mandatory Requirements

• 2–4 years of experience in software testing or automation engineering, with strong backend/API focus;
• Programming experience in at least one backend language (e. g. , Java, Kotlin, Go);
• Strong understanding of REST/Graph
  QL APIs, messaging systems, and
  - driven architectures;
• Hands-on experience with API testing frameworks (e. g. , REST-assured, Ktor, Playwright API, Postman/Newman);
• Experience with CI/CD systems (Git
  Hub Actions, Git
  Lab CI, Jenkins) and version control (Git);
• Practical knowledge of containerized environments (Docker, Kubernetes);
• Strong debugging skills using logs, metrics, and distributed tracing (Datadog, Open
  Telemetry, Grafana);
• Solid understanding of QA methodologies (test strategies, defect lifecycle, coverage analysis);
• Fluent English.

Complementary Requirements

• Experience with service mocking and test doubles for distributed systems;
• Contributions to test frameworks or
  - source QA tooling;
• Exposure to event streaming platforms (Kafka, Rabbit
  MQ) and testing asynchronous flows.

Benefits

• Our company does not sponsor work visas or work permits. All applicants must have the legal right to work in the country where the position is based.
• Only candidates who meet the required qualifications and match the profile requested by our clients will be contacted.