Salary: $$ 125000 - $$ 175000 per year
Location: Reston, Virginia
Posted: September 15 2026
Minimum Degree:
Relocation Assistance: Available
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 TypeScript-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 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 REQUIRED
Experience using ADO, Gitlab or similar CI/CD tools
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 REQUIRED
Experience using ADO, Gitlab or similar CI/CD tools
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.
Salary Type : Annual Salary
Salary Min : $ 125000
Salary Max : $ 175000
Currency Type : USD