EPAM is a leading global provider of digital platform engineering and development services. We are committed to having a positive impact on our customers, our employees, and our communities. We embrace a dynamic and inclusive culture. Here you will collaborate with multi-national teams, contribute to a myriad of innovative projects that deliver the most creative and cutting-edge solutions, and have an opportunity to continuously learn and grow. No matter where you are located, you will join a dedicated, creative, and diverse community that will help you discover your fullest potential.
We're looking for a
Lead Full Stack Software Engineer to create user-friendly, high-performing interfaces and frontend integration libraries that bring GenAI and intelligent automation capabilities to teams across IT, HR, Finance, Sales, Marketing, and Customer Support.
Responsibilities
- Architect and develop complete GenAI-powered applications, with a focus on intuitive web-based UIs and high-performing client-side API integrations
- Craft responsive, accessible frontend interfaces designed for streaming responses and minimal latency
- Construct and sustain a library of reusable frontend components, hooks, and design systems for enterprise-grade GenAI applications
- Bring LLM-based experiences to life using frameworks such as LangChain or LlamaIndex paired with OpenAI, Claude, or Gemini
- Partner with designers and product managers to quickly iterate on innovative AI UX patterns, including chat assistants, prompt builders, and feedback loops
- Guarantee security, accessibility, observability, and thorough test coverage throughout client-side and full-stack builds
- Produce responsive, accessible, and high-performance web UIs suited to AI-driven interactions like streaming text, prompt inputs, citations, and summaries
- Sustain a shared library of reusable frontend components and hooks so internal teams can easily integrate GenAI capabilities into their own applications
- Build UI components that offer transparency, observability, and trust in AI-generated outputs
Requirements
- 5+ years building production applications with React, TypeScript, or Vue for enterprise use cases
- 5–8 years of full-stack software engineering experience spanning frontend UIs, REST APIs, and microservices
- 2+ years integrating GenAI features, LLM APIs, and prompt UI patterns into web-based applications
- Solid Python backend skills, along with 2+ years building and consuming cloud microservices on AWS, Docker, and REST APIs
- Demonstrated track record building, documenting, and maintaining reusable component libraries, design systems, and custom hooks
- English proficiency at a B2+ level or higher
Nice to have
- Experience with real-time streaming UX patterns, including SSE/WebSockets, prompt builders, citations, and summary UI components
- Understanding of WCAG 2.1 AA compliance and how to architect accessible UI components
- Hands-on skills with client-side or Node.js LangChain, LangGraph, or LlamaIndex orchestration
- Exposure to RAG pipelines, vector search platforms like Pinecone or OpenSearch, and embedding fundamentals
- Experience with 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 LinkedIn Learning library and 22,000+ courses
- Global career opportunities
- Volunteer and community involvement opportunities
- EPAM Employee Groups
- Award-winning culture recognized by Glassdoor, Newsweek and LinkedIn
EPAM is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, age, sexual orientation, gender identity or expression, disability, protected veteran status, or any other characteristic protected by applicable law.
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