Senior Front-End Developer; Leaning Full Stack

Senior Front-End Developer (Leaning Full Stack) Advanced Resource Technologies Senior Front-End Developer (Leaning Full Stack)

Washington, DC 20001

Advanced Resource Technologies, Inc. (ARTI) is currently recruiting for a Senior Front-End Developer (Leaning Full Stack) to support the Advanced Research Projects Agency for Health (ARPA-H). This position is full-time, exempt. Start date is immediate upon selection and public trust clearance processing as required.

The Senior Front-End Developer (Leaning Full Stack) will support the GRACE Development Team by leading the design, development, and delivery of the user-facing experience for ARPA-H's production AI assistant. This role is responsible for developing intuitive, responsive, and scalable web applications that enable users to effectively interact with advanced agentic AI systems while ensuring performance, accessibility, security, and exceptional user experience.

• Lead the development and enhancement of the GRACE front-end application using React, Type Script, and modern web technologies.
• Design and implement intuitive user interfaces that support conversational AI, agentic workflows, and rich AI-generated content.
• Develop interactive features including streaming AI responses, citations, code rendering, tables, diagrams, maps, generated images, and document previews.
• Build responsive, accessible, and user-friendly interfaces that comply with Section 508 and WCAG accessibility standards.
• Develop and maintain client-side state management, real-time communication, and streaming functionality using Web Sockets, Server-Sent Events (SSE), or similar technologies.
• Collaborate with backend engineers to define APIs and implement seamless integrations with AI services, knowledge repositories, and enterprise systems.
• Customize and extend Chainlit and other conversational AI frameworks to enhance application functionality and user experience.
• Partner closely with UX designers and researchers to rapidly prototype, validate, and iterate on new product capabilities.
• Optimize application performance, responsiveness, reliability, and scalability while maintaining a high standard of code quality.
• Develop front-end observability capabilities, including client-side monitoring, analytics, and error tracking.
• Mentor software engineers by promoting development best practices, code reviews, testing standards, and technical excellence.
• Ensure all applications adhere to federal security, privacy, and responsible AI requirements.
• Participate in Agile development activities including sprint planning, technical design, and product demonstrations.
• Communicate technical solutions effectively with both technical and non-technical stakeholders.

• Bachelor's degree in Computer Science, Software Engineering, Information Technology, or a related field;
  Master's degree preferred or equivalent practical experience.
• Minimum of seven (7) years of professional software development experience with a strong focus on front-end web application development.
• Experience designing and developing AI-powered, LLM, conversational AI, chat, or agentic AI applications.
• Working knowledge of Python and full-stack application development.
• Experience developing real-time web applications utilizing Web Sockets, Server-Sent Events (SSE), or similar technologies.
• Experience working with RESTful APIs and integrating front-end applications with backend services.
• Strong understanding of responsive design, accessibility (Section 508/WCAG), usability, and user-centered design principles.
• Experience building and deploying production-grade enterprise web applications.
• Familiarity with Chainlit or similar conversational AI frameworks is highly desirable.
• Experience with Microsoft Azure, CI/CD pipelines, containerization, and cloud-native application development is preferred.
• Strong analytical, troubleshooting, and problem-solving skills.
• Excellent written and verbal communication skills.
• Demonstrated ability to work independently and collaboratively within fast-paced Agile development environments.

Applicants selected for this position will be subject to a Government Security Investigation and must meet eligibility requirements for a Public Trust clearance.

The above information has been designed to indicate the general nature and level of work performed by employees in this classification. It is not designed to contain or be interpreted as a comprehensive inventory of all duties, responsibilities, and qualifications required of the employee assigned to this job.

Advanced Resource Technologies, Inc. is committed to a work environment free of all forms of discrimination and is a member of the DHS E-Verify Program.

Advanced Resource Technologies, Inc. recruits and hires without regard to age, color, disability, gender, gender identity, genetic information, marital status, military status, national origin, race, religion, sexual orientation, veteran status, or any other legally…