Software Development Engineer in Test (SDET)

About MetronMetron is an employee-owned company dedicated to delivering innovative solutions for the most challenging national security problems. For over 40 years, our principled approach to problem-solving has yielded creative solutions at the intersection of advanced mathematics, computer science, physics, and engineering. Our people are leaders in their technical fields and are passionate about solving challenging problems. We look for individuals who share this same passion and can apply their experience in real-world settings. 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 Qualifications Bachelor’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 development Experience 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, VA*The selected individual(s) will be required to work from the Reston, VA officePerks and BenefitsMedical, Dental and Vision Insurance Accompanying FSA and HSA options Additional Voluntary Benefits Paid Time Off 9 Observed Holidays and 2 Floating Holidays Paid Parental Leave Tuition Reimbursement Relocation AssistanceProfessional Development Reimbursement Annual Salary Reviews Profit Sharing 401(k) Traditional and Roth Options Gym and Fitness Reimbursement Employee Assistance Program Employee Referral Program Metron is an Equal Employment Opportunity (EEO) employer. It is the policy of the company to provide equal employment opportunities to all qualified applicants without regard to race, color, religious, sex, sexual orientation, gender identity, national origin, age, protected veteran or disabled status, or genetic information.VEVRAA Federal Contractor