Lead Full Stack Software Engineer

Description

Summary: Seeking a Lead Full Stack Software Engineer to build intuitive, performant GenAI-powered applications and frontend integration libraries across various business functions. Highlights: 1. Design and build end-to-end GenAI-powered applications with intuitive UIs 2. Develop responsive, accessible frontend interfaces for AI-driven interaction 3. Collaborate with designers and product managers on novel AI UX patterns We are seeking a **Lead Full Stack Software Engineer** to build intuitive, performant user interfaces and frontend integration libraries that make GenAI and intelligent automation accessible and useful across IT, HR, Finance, Sales, Marketing, and Customer Support. **Responsibilities** * Design and build end\-to\-end GenAI\-powered applications, emphasizing intuitive web\-based UIs and performant client\-side API integrations * Develop responsive, accessible frontend interfaces engineered for streaming responses and low latency * Build and maintain a library of reusable frontend components, hooks, and design systems for enterprise GenAI applications * Implement LLM\-based experiences using frameworks like LangChain or LlamaIndex with OpenAI, Claude, or Gemini * Collaborate with designers and product managers to iterate rapidly on novel AI UX patterns such as chat assistants, prompt builders, and feedback loops * Ensure security, accessibility, observability, and test coverage across client\-side and full\-stack implementations * Create responsive, accessible, and high\-performance web UIs tailored for AI\-driven interaction patterns like streaming text, prompt inputs, citations, and summaries * Maintain a shared library of reusable frontend components and hooks that enable internal teams to drop GenAI capabilities into their applications * Deliver UI components that provide transparency, observability, and confidence in AI\-generated outputs **Requirements** * 5\+ years of production experience with React, TypeScript, or Vue for enterprise web applications * 5–8 years of software engineering experience across the full web stack, including frontend UIs, REST APIs, and microservices * 2\+ years of experience integrating GenAI features, LLM APIs, and prompt UI patterns into web applications * Strong Python backend development skills and 2\+ years of experience consuming and building cloud microservices on AWS, Docker, and REST APIs * Proven experience building, documenting, and maintaining reusable component libraries, design systems, and custom hooks * Proficiency in English at a B2\+ level **Nice to have** * Familiarity with real\-time streaming UX patterns such as SSE/WebSockets, prompt builders, citations, and summary UI components * Knowledge of WCAG 2\.1 AA compliance and accessible UI component architecture * Skills in client\-side or Node.js LangChain, LangGraph, or LlamaIndex orchestration * Familiarity with RAG pipelines, vector search tools like Pinecone or OpenSearch, and embedding concepts * Background in AI evaluation tooling, feedback loops, and guardrails in user interfaces **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