Front End Developer (React) Jobs

UI React EngineerTysons, VA Top Secret/SCI Full Scope Polygraph Mid Level Career (5+ yrs experience) $96,900 - $247,900Job DescriptionWe're looking for UI React Engineers to help modernize a mission-critical system used to support complex manual user workflows. In this role, you'll build intuitive, performant user interfaces that help users ingest, navigate, and analyze information from a variety of file types. The system applies named entity recognition and related data-processing capabilities to reduce manual effort, surface key insights, and improve the speed and accuracy of mission workflows.What you will do in this role:Work closely with teammates and stakeholders in a Lean Agile environment to build mission-critical production applications focused on data discovery and analysisParticipate in code reviews, system design discussions, and continuous improvement initiativesLeverage modern build tools, testing frameworks, and CI/CD pipelines to ensure quality and delivery speedDesign and build modern, performant, responsive user interfaces using React and related technologiesCollaborate with UI and backend engineers and product stakeholders to deliver intuitive and accessible user experiences that integrate with RESTful APIsRequired Qualifications:Active TS/SCI with Polygraph at time of applicationExperience with source control (e.g. Git) and CI/CD pipeline tools such as Jenkins (preferred), AWS CodeBuild, GitLab CI, or GitHub ActionsExperience designing and implementing scalable, maintainable, and OOP based software in a containerized cloud environment (AWS preferred) leveraging foundational services for computing, identity management, and networking.Proficiency in modern JavaScript/TypeScript, HTML, and CSSProficiency in building frontend applications with React and related libraries (e.g., React Router, Redux, Zustand, etc.)Effective written and verbal communication skills necessary to perform job duties and collaborate with team membersCandidates must maintain a primary residence within a two?hour drive of Herndon, VA to support onsite collaboration as needed.Desired skills:Contributions to open-source libraries or community projects or personal projectsExperience with UI unit and E2E testing tools and frameworks such as (e.g., Jest, Vitest, Playwright, Cypress)Familiarity with design systems and component libraries (e.g., Storybook, Tailwind CSS, Material UI)Understanding of accessibility and usability best practices and tooling (e.g., JAWS, Lighthouse, Axe Devtools)Experience with NextJS, Astro, or other React MetaframeworksThe base salary pay range for this role is $96,900 - $247,900. This range reflects base compensation only and does not include benefits, bonuses, or additional pay incentives associated with the opportunity.