Software Development Engineer in Test (SDET)

Visa sponsorship provided: No Location: Reston Remote Status: no remote Pay Type: Annual Salary Salary: 125000-175000/US Dollars Occupational Categories: Information Technology/ Computing/ Cyber/ Software Industry(ies): Aerospace / Defense We are seeking a mid-level Software Development Engineer in Test (SDET) to help build and mature the testing infrastructure supporting production software for simulation, optimization, and decision support in mission-focused environments. This role is for someone who can develop robust test harnesses, mocking infrastructure, and automated and manual testing strategies. A successful candidate will also help integrate testing into CI/CD pipelines and improve software quality and reliability across Java, Rust, and Type Script-based applications. The strongest candidates will bring solid software development fundamentals, hands-on experience with software testing and test infrastructure, and the technical judgment to build scalable, maintainable testing practices across a growing production codebase. Required QualificationsSECRET CLEARANCEBachelors degree in computer science, mathematics, physics, applied math, or related field At least 3 years of industry experience Experience building test infrastructure including mocking and CI/CD pipelines Experience in software testing and test harness development Experience designing automated and manual testing Software Development experience in Java, Rust or Typescript/React Ability to work effectively with researchers, engineers, and end users to translate technical concepts into usable software Familiarity with full-stack web application development in any frameworks/languages U.S. CITIZENSHIP REQUIREDExperience using ADO, Gitlab or similar CI/CD tools Qualifications:Required Qualifications secret clearance Bachelors degree in computer science, mathematics, physics, applied math, or related field At least 3 years of industry experience Experience building test infrastructure including mocking and CI/CD pipelines Experience in software testing and test harness development Experience designing automated and manual testing Software Development experience in Java, Rust or Typescript/React Ability to work effectively with researchers, engineers, and end users to translate technical concepts into usable software Familiarity with full-stack web application development in any frameworks/languages U.S. CITIZENSHIP REQUIREDExperience using ADO, Gitlab or similar CI/CD tools Why is This a Great Opportunity:We are seeking a mid-level Software Development Engineer in Test (SDET) to help build and mature the testing infrastructure supporting production software for simulation, optimization, and decision support in mission-focused environments. This role is for someone who can develop robust test harnesses, mocking infrastructure, and automated and manual testing strategies.