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Full Stack Engineer
- Location: Arlington, Virginia 22202
- Work model: On-site
- Posted July 22, 2026
- Job ID: JPC - 206713
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Job Description
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 forefront of AI, agentic systems, and digital transformation for federal customers.
- Inclusive, high-performance engineering culture with strong mentorship and peer support.
- Opportunities for rapid career growth and hands-on experience with advanced technology and security.
- Comprehensive benefits package (medical, dental, vision, retirement, and more).
How to Apply
If you are a React-focused engineer with a passion for real-time applications, AI-enabled products, and secure, scalable systems-and you hold an active TS/SCI Poly clearance-submit your resume today to join a team that's building the future of federal digital experiences.
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Job details
Job ID JPC - 206713
Location Arlington, Virginia, United States
Work Model On-site
Job Type W2
Posted July 22, 2026
Skills Key Hiring Priorities - Federal UI / Full-Stack Engineer• Active TS/SCI Poly Clearance - Critical requirement across current and upcoming federal programs • Strong React / TypeScript Foundation - This is a frontend-first role requiring de SSE streaming data event-driven interfaces and responsive user experiences is highly valued • Full-Stack Integration Skills - Ability to connect frontend applications to APIs Microservices and cloud platforms while maintaining performance and scalability • Testing & Engineering Excellence - Strong background with Playwright Cypress Jest TDD and modern software delivery practices • AI Product Experience - Experience building copilots conversational UIs workflow-based applications or agentic AI experiences aligns directly with Thoughtworks' roadmap Ideal Candidate: React-focused product engineer with real-time application experience consulting DNA and an interest in building AI-enabled user experiences for federal customers
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