Booz Allen Hamilton

Booz Allen Hamilton

AI Front-End Developer, Senior

Washington, District of Columbia · Senior · Part-time

Sponsorship not specified$99k-$225kDetected 12 days ago
JavaScriptTypeScriptPythonReactCSSFull-Stack DevelopmentAzureCI/CDWebSocketsData VisualizationLLMsAgentic AIAI OrchestrationDesign SystemsAccessibilityResearchLeadershipCommunicationCollaboration

About the role

  • GRACE is ARPA-H's production AI assistant.
  • We've shipped the first generation of agentic AI, and now we're moving quickly to go deeper: user-built agents, multi-agent orchestration, and a platform teams can extend themselves on.
  • The front end is where users decide whether GRACE is reliable and worth using.

Responsibilities

  • Own the GRACE front end end-to-end, including the Chainlit-based chat application and the React or TypeScript components and interaction patterns layered on top of it.
  • Own the rendering pipeline for rich AI output, including streaming responses, markdown, code blocks, tables, citations, diagrams with Mermaid, maps with GeoJSON, and generated images, so that complex output is legible and trustworthy.
  • Design and build interaction patterns for agentic workflows, including tool-call progress, multi-step reasoning states, human-in-the-loop confirmations, and graceful handling of long-running or partial responses.
  • Own client-side state, streaming, and real-time updates, including WebSocket or SSE, so the interface stays responsive while the backend is still working.
  • Build file upload, document preview, and results-display experiences for GRACE's knowledge search and research workflows.
  • Partner with backend engineers on the API contract the front end consumes, shape it so it serves the user experience, and implement the glue when the boundary is fuzzy.
  • Implement front-end-facing integrations with GRACE's data sources and APIs, including LLM provider outputs, knowledge search, and tool results.
  • Work hand-in-hand with our human-centered researcher and designer to turn user insights and design intent into interfaces that actually serve the user, not just approximations of the mockup.
  • At Booz Allen, we celebrate your contributions, provide you with opportunities and choices, and support your total well-being.
  • However, we want to ensure a fair candidate process based on your own skills and knowledge.

Requirements

  • 7+ years of experience in software engineering, building and operating production web applications, including on the front end
  • 5+ years of experience designing and building for AI, LLM, chat, or agentic products, including streaming responses, citation and source display, tool-call visibility, and building for uncertain or probabilistic output
  • 5+ years of experience with industry best practices and front-end patterns specific to agentic AI, including streaming UX, agent and tool-call visibility, human-in-the-loop, and multi-agent workflows
  • 5+ years of experience with real-time UI patterns such as streaming responses, WebSockets or SSE, and optimistic or partial rendering, including web performance, cross-browser behavior, and front-end testing
  • Experience with TypeScript or JavaScript and React and its modern ecosystem, including hooks, state management, and component architecture
  • Experience in a backend language such as Python and comfort operating across the client or server boundary
  • Ability to communicate, give and receive feedback well, and be a self-starter with a high bar and high sense of urgency
  • Bachelor's degree in Computer Science
  • Experience with Chainlit or similar conversational or LLM front-end frameworks, including customizing rendering and interaction behavior
  • Experience with rich client-side rendering, including markdown, syntax highlighting, Mermaid diagrams, data visualization, or map rendering

Skills

  • Write readable, tested, reviewed, and documented production-quality code across the stack.
  • Translate research findings and usability feedback into concrete UI changes and close the loop by shipping, measuring, and iterating.

Compensation

  • Salary at Booz Allen is determined by various factors, including but not limited to location, the individual's particular combination of education, knowledge, skills, competencies, and experience, as well as contract-specific affordability and organizational requirements.
  • The projected compensation range for this position is $99,000.00 to $225,000.00 (annualized USD).
  • The estimate displayed represents the typical salary range for this position and is just one component of Booz Allen's total compensation package for employees.

Benefits

  • Our offerings include health, life, disability, financial, and retirement benefits, as well as paid leave, professional development, tuition assistance, work-life programs, and dependent care.
  • Full-time and part-time employees working at least 20 hours a week on a regular basis are eligible to participate in Booz Allen's benefit programs.
  • Individuals that do not meet the threshold are only eligible for select offerings, not inclusive of health benefits.
  • We encourage you to learn more about our total benefits by visiting the Resource page on our Careers site and reviewing Our Employee Benefits page.
  • Our people-first culture prioritizes the benefits of collaboration, whether it occurs in person or virtually.

Company info

  • We are a small, startup-minded team that ships fast and owns what we build end-to-end.
  • We are looking for a senior front-end-leaning full-stack developer to own the experience layer of
  • You will own that surface, while operating within the privacy, security, and responsible-use requirements of our mission and the federal environment.
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