Full Stack Engineer

Full Stack Engineer - Federal UI / AI-Enabled Systems (TS/SCI Poly) Location: Remote (USA-based, some travel) | Arlington, VA (W2) About the Role Join the Agentic AI platform's mission-critical team as a Frontend-Focused Full Stack Engineer. In this pivotal role, you will architect and deliver high-impact, real-time user interfaces for federal clients leveraging React/Next.js, TypeScript, and microservices. You'll shape the next generation of AI-enabled, streaming web applications for agentic systems, directly influencing federal digital transformation. Work remotely with a collaborative, AI-assisted engineering culture that values code quality, inclusion, and end-to-end ownership. Responsibilities - Architect, build, and optimize scalable, reusable React component libraries and design systems for AI/agentic interfaces. - Develop streaming, event-driven UIs using Server-Sent Events (SSE) or WebSockets, ensuring real-time performance and reliability. - Integrate frontend with

microservices, APIs, and cloud platforms to maintain seamless data flow, security, and system health. - Own visualization of tool-calls, lineage, and traces for live agent execution, focusing on usability and accessibility. - Champion automated testing with Playwright, Cypress, Jest, and TDD for robust, production-grade software. - Document technical designs, build tools, and developer workflows to support modern DevSecOps practices. - Mentor junior team members and drive code reviews to uphold engineering best practices and continuous improvement. - Collaborate cross-functionally in agile teams, balancing new features with technical debt and system performance. Required Skills and Experience - Active TS/SCI security clearance with polygraph (MANDATORY). - Minimum 3 years' professional experience in software engineering, emphasizing modern web app development. - Expert-level React, TypeScript, and responsive UI/UX development skills. - Hands-on experience with real-time streaming data, event-driven interfaces (SSE, WebSockets), and state management. - Proficiency integrating frontend with RESTful/GraphQL APIs and backend microservices. - Strong background in automated testing (Playwright, Cypress, Jest, TDD) and CI/CD pipelines. - Deep understanding of Git workflows and secure software delivery. - Experience building accessible web applications (WCAG standards). Preferred Skills - Professional experience with cloud platforms (AWS, Azure, GCP) and Infrastructure as Code (IaC). - Contributions to large-scale design systems and performance monitoring (Lighthouse, Web Vitals). - Exposure to GraphQL, Serverless, containerization (Docker, Kubernetes). - Familiarity with distributed tracing (OpenTelemetry) and AI/agentic, long-running system frontends. - Consulting or XP/Pair Programming backgrounds. - Regular use of AI coding assistants with strong verification skills. Benefits - Remote-first flexibility with occasional travel to client sites. - Work at the