Lead Full Stack Software Engineer

Description

Summary: Seeking a Lead Full Stack Software Engineer to develop user-friendly, high-performing interfaces and frontend integration libraries for GenAI and intelligent automation capabilities across various business functions. Highlights: 1. Architect and develop complete GenAI-powered applications with intuitive UIs 2. Craft responsive, accessible frontend interfaces for AI-driven interactions 3. Partner with designers and product managers on innovative AI UX patterns 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