Lead Full-Stack Software Engineer
Job in
Washington, District of Columbia, 20022, USA
Listed on 2026-10-03
Listing for:
EPAM Systems, Inc.
Full Time
position Listed on 2026-10-03
Job specializations:
-
Software Development
Full Stack Developer, AI Engineer (Applied/Software), Front End Developer, React.js
Job Description & How to Apply Below
Responsibilities Design and develop end-to-end GenAI-powered applications, emphasizing intuitive web-based UIs and high-performing client-side API integrations
Build responsive, accessible frontend interfaces tailored for streaming responses and minimal latency
Create and maintain a library of reusable frontend components, hooks, and design systems for enterprise-grade GenAI applications
Deliver LLM-based experiences using frameworks such as Lang Chain or Llama Index combined with OpenAI, Claude, or Gemini Collaborate with designers and product managers to rapidly iterate on innovative AI UX patterns, including chat assistants, prompt builders, and feedback loops
Ensure security, accessibility, observability, and comprehensive test coverage across client-side and full-stack builds
Deliver responsive, accessible, and high-performance web UIs suited to AI-driven interactions such as streaming text, prompt inputs, citations, and summaries
Maintain a shared library of reusable frontend components and hooks so internal teams can seamlessly integrate GenAI capabilities into their own applications
Develop UI components that provide transparency, observability, and trust in AI-generated outputs
Requirements
Background in building production applications with React, Type Script, or Vue for enterprise use cases (5+ years)
Expertise in full-stack software engineering spanning frontend UIs, REST APIs, and microservices (5–8 years)
Proficiency in integrating GenAI features, LLM APIs, and prompt UI patterns into web-based applications (2+ years)
Skills in Python backend development, along with 2+ years building and consuming cloud microservices on AWS, Docker, and REST APIsShowcase of building, documenting, and maintaining reusable component libraries, design systems, and custom hooks
Proficiency in English at a B2+ level or higher
Nice to have Familiarity with real-time streaming UX patterns, such as SSE/Web Sockets, prompt builders, citations, and summary UI components
Knowledge of WCAG 2.1 AA compliance and approaches to designing accessible UI components
Capability to work with client-side or Node.js Lang Chain, Lang Graph, or Llama Index orchestration
Understanding of RAG pipelines, vector search platforms like Pinecone or Open Search, and embedding fundamentals
Competency in AI evaluation tools, feedback loop design, and interface-level guardrails
We offer
International projects with top brands
Work with global teams of highly skilled, diverse peers
Healthcare benefits
Employee financial programs
Paid time off and sick leave
Upskilling, reskilling and certification courses
Unlimited access to the Linked In Learning library and 22,000+ courses
Global career opportunities
Volunteer and community involvement opportunitiesEPAM Employee Groups Award-winning culture recognized by Glassdoor, Newsweek and Linked In
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