> Markdown version of [/jobs/ext/3775802-software-development-engineer-in-test-sdet](https://www.wearedevelopers.com/jobs/ext/3775802-software-development-engineer-in-test-sdet). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Software Development Engineer In Test (Sdet)

- **Company:** Metron, Inc.
- **Location:** Reston, VA, United States
- **Experience:** Experienced
- **Contract:** Permanent contract
- **Skills:** Testing (Software), Java (Programming Language), Microsoft Azure, Software Quality, Continuous Integration, Decision Support Systems, Web Development, Mockito, Software Engineering, TypeScript, Rust (Programming Language), ReactJS, Gitlab, Information Technology, Software Usability, SDET
- **Published:** October 16, 2026
- **Apply:** https://www.careerbuilder.com/job-details/software-development-engineer-in-test-sdet-reston-va--1020ab07-4ee6-448e-81b0-07b4ecf9fa3a

## About the Role

* Bachelor's 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; successful candidates will be subject to a security investigation and must meet eligibility requirements for access to classified information

Desired Qualifications

 * Active DoD Security Clearance
 * Experience using ADO, Gitlab or similar CI/CD tools

## Description

Our Reston team is 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 QualificationsBachelor's degree in computer science, mathematics, physics, applied math, or related fieldAt least 3 years of industry experienceExperience building test infrastructure including mocking and CI/CD pipelinesExperience in software testing and test harness developmentExperience designing automated and manual testingSoftware Development experience in Java, Rust or Typescript/ReactAbility to work effectively with researchers, engineers, and end users to translate technical concepts into usable softwareFamiliarity with full-stack web application development in any frameworks/languagesU.S. CITIZENSHIP REQUIRED; successful candidates will be subject to a security investigation and must meet eligibility requirements for access to classified informationDesired QualificationsActive DoD Security ClearanceExperience using ADO, Gitlab or similar CI/CD toolsPosition Location: Reston, VAThe selected individual(s) will be required to work from the Reston, VA officePerks and BenefitsMedical, Dental and Vision InsuranceAccompanying FSA and HSA optionsAdditional Voluntary BenefitsPaid Time Off9 Observed Holidays and 2 Floating HolidaysPaid Parental LeaveTuition ReimbursementRelocation AssistanceProfessional Development ReimbursementAnnual Salary ReviewsProfit Sharing401(k) Traditional and Roth OptionsGym and Fitness ReimbursementEmployee Assistance ProgramEmployee Referral Program