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What Impact You'll Have GRVTY is seeking an experienced UI Front End Software Engineer (SWE3) in support of CODEX, directly meeting mission-critical needs in partnership with mission customers. This individual will lead a team of UI developers, designing front-end architecture and coding standards while remaining hands-on in development across the full software product lifecycle in an agile environment. Responsibilities span analyzing user requirements to derive design and performance standards, developing and debugging software, integrating systems, and implementing algorithms to meet performance goals. The ideal candidate has front end experience, translates UX/UI designs into accessible, production-ready interfaces, and mentors junior developers while collaborating closely with system engineers and product stakeholders to resolve technical problem areas. What You'll be Owning GRVTY is seeking a UI Front End Software Engineer with a TS/SCI + Poly clearance (applicable to this customer) to join one of our top projects in Annapolis Junction, MD. The Software Engineer develops, maintains, and enhances complex and diverse software systems (e.g., processing-intensive analytics, novel algorithm development, manipulation of extremely large data sets, real-time systems, and business management information systems) based upon documented requirements. Works individually and as part of a team. Reviews and tests software components for adherence to the design requirements and documents test results. Resolves software problem reports. Utilizes software development and software design methodologies appropriate to the development environment. Provides specific input to the software components of system design to include hardware/software trade-offs, software reuse, use of Commercial Off-the-shelf (COTS)/Government Off-the-shelf (GOTS) in place of new development, and requirements analysis and synthesis from system level to individual software components. In this capacity, the UI Developer will: Lead and mentor a team of UI/front-end developers, providing technical guidance, standards, and code review Architect and implement scalable, maintainable front-end solutions using modern frameworks Translate prototypes and design specifications into functional, responsive, and accessible interfaces Collaborate with backend engineers to design and integrate APIs, ensuring efficient data flow between front-end and back-end systems Contribute to full-stack development efforts as needed, including backend services, database interactions, and deployment pipelines Establish and enforce front-end coding standards, best practices, and component reuse across the team Partner with UX/UI and systems engineers to ensure design intent is preserved through implementation Identify and resolve performance bottlenecks, cross-browser issues, and technical debt Participate in sprint planning, technical estimation, and architectural decision-making Ensure compliance with accessibility standards (e.g., Section 508, WCAG) throughout development What You Must Have Active TS/SCI with Polygraph Clearance (applicable to this customer) 12 years of experience as a SWE in programs and contracts of similar scope, type, and complexity Bachelors degree in Computer Science or related discipline from an accredited college or university is required; 4 years of additional SWE experience on projects with similar software processes may be substituted for a bachelors degree 7 years of experience in Software Database and Repository Interface Development Proven experience leading or mentoring a development team Strong proficiency in modern front-end frameworks (e.g., React, Angular, Vue) and standard web technologies (HTML, CSS, JavaScript) Full-stack experience, including backend development (e.g., Node.js, Python, Java, RESTful/GraphQL API design Experience with state management, component-based architecture, and responsiv