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Software Engineer in Test (SDET) – Java (Backend)

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Robert Half

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Location:
United States , Washington, DC

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Contract Type:
Not provided

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Salary:

Not provided

Job Description:

We’re hiring a Software Engineer in Test (SDET) who can write automation code in Java and owns the full backend testing lifecycle for modern service-based systems. This role is 100% backend (no UI/front-end testing) and focuses on validating microservices and APIs running in a containerized environment. You’ll work closely with engineering and product teams to identify risk early, build reliable automated coverage, and speak up when something isn’t ready.

Job Responsibility:

  • Build and maintain Java-based automated tests for backend services and APIs
  • Execute and improve the end-to-end testing process (test planning, test execution, defect validation, regression)
  • Test microservices and distributed systems, including service-to-service behavior and integration points
  • Validate REST APIs and troubleshoot issues through logs, debugging, and structured investigation
  • Support performance testing using Gatling
  • expand/maintain performance suites as needed
  • Collaborate with engineers and stakeholders to raise concerns, communicate risk, and drive quality decisions
  • Work with internal tooling used for automation and testing (no required external framework experience—strong fundamentals matter most)
  • Contribute to quality improvements across deployments and releases in Kubernetes environments

Requirements:

  • Strong Java skills (writing test automation code, not just manual QA)
  • Solid understanding of backend testing processes and how to build effective test coverage
  • Experience testing REST APIs (requests, responses, payload validation, error handling)
  • Working knowledge of microservices and distributed system concepts
  • Familiarity with Kubernetes (deployments, pods/services concepts
  • comfortable operating in a k8s environment)
  • Ability to work in a hybrid setting in/near Washington, DC (preferred)
  • Strong communication skills—vocal, asks questions, flags issues early

Nice to have:

  • Kotlin exposure (helpful, not required)
  • Experience with Elasticsearch (querying, validation, debugging search-based behaviors)
  • Experience validating or testing microservice deployments (release verification, smoke/regression in containerized environments)
  • Additional tooling experience (CI/CD, test reporting, service observability) is a plus
What we offer:
  • medical
  • vision
  • dental
  • life and disability insurance
  • 401(k) plan

Additional Information:

Job Posted:
February 20, 2026

Work Type:
Hybrid work
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