Software Development Engineer in Test (SDET)

Overview As a mid-level SDET at Metron’s Reston team, you will build and mature testing infrastructure for production software used in simulation, optimization, and decision support. You’ll implement robust test harnesses, mocking systems, and both automated and manual testing strategies, while integrating testing into CI/CD pipelines. You’ll help improve software quality and reliability across Java, Rust, and TypeScript-based applications, working closely with researchers, engineers, and end users. This role offers the chance to shape scalable testing practices in a mission-focused environment and contribute to high-assurance software solutions. You’ll join a collaborative team that values technical Compensation / BenefitsMedical, Dental and Vision InsurancePaid Time OffTuition ReimbursementRelocation AssistanceAnnual Salary Reviews401(k) Traditional and Roth Options ResponsibilitiesBuild and mature testing infrastructure, including mocking and test harnessesDevelop automated and manual testing strategiesIntegrate testing into CI/CD pipelinesImprove software quality and reliability across Java, Rust, and TypeScript appsCollaborate with researchers, engineers, and end users to translate concepts into usable software Key requirementsBachelor’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 usersFamiliarity with full-stack web application development in any frameworks/languagesU.S. citizenship required; eligibility for access to classified informationcollaborationcommunicationproblem-solvingtest infrastructure developmentmocking frameworksCI/CD tooling