Software Engineer: Front End - R128

Expedition Technology (EXP) is seeking a Front-End Software Engineer to join our Training Data Storefront (TDS) team. The TDS mission is to develop, deploy, and maintain a centralized repository of AI/ML annotations and models that supports the Department of Defense (DoD) and Intelligence Community (IC). TDS plays a critical role in addressing today’s defense and intelligence challenges. We are looking for a Front-End Software Engineer who is passionate about building high-quality, user-focused applications. The ideal candidate thrives in a collaborative environment, writes clean and maintainable code, and is dedicated to delivering exceptional user experiences. In this role, you will develop user-facing web application components, translating UI/UX designs—such as wireframes, site maps, process flows, and mockups—into responsive interfaces. You will also integrate front-end components with backend systems to enable seamless data flow, and contribute to product quality through unit testing, automated testing, and end-to-end validation. At EXP, you will experience the full lifecycle of modern software development; from Agile scrum meetings, designing new features, developing new capabilities using the latest open-source frameworks, to directly working with end-users to ensure we are solving their mission needs, and maintaining the operational system. Required Skills Experience in one of the following frameworks: React.js, Vue.js, Angular, SolidJS, and/or Next.js. Experience with Typescript is preferred, but Javascript is the minimum. Knowledge of Vite, react-query, TailwindCSS, Openlayers, Playwrite, Yup and/or MUI. Use of front-end markup languages, with experience implementing responsive designs using Bootstrap framework. Work closely with UI/UX designers, transform wireframes, mockups, and prototypes into designs to ensure seamless user experience aligns to HCI principles. Integrate front-end components with back-end services using RESTful APIs or GraphQL to fetch, display and update data in real-time applications. Implement front-end best practices for performance optimization (e.g. lazy loading, code splitting); ensure secure communications between front-end and back-end services. Use GIT for version control; manage codebases and branching strategies. Use front-end testing frameworks/tools to create unit tests, integration tests, and end-to-end tests to ensure code stability and high-quality output. What You'll Need To Succeed Education: BA/BS in Information Technology or related field or the equivalent combination of education, technical certifications or training, or work experience Experience: 8+ years of related experience Security Clearance Level: TS/SCI Location: Herndon, VA US Citizenship Required