Lead Software Engineer, Applied AI; Frontend Leading

Position: Lead Software Engineer, Applied AI (Frontend Leading)
Our Business Technology organization builds secure and intelligent internal platforms that power our global workforce. As a Lead Software Engineer, Applied AI (Frontend Leading), you will build intuitive, performant user interfaces and frontend integration libraries that make Generative AI (GenAI) and intelligent automation accessible and useful across IT, HR, Finance, Sales, Marketing, and Customer  this role, you will bridge the gap between complex LLM orchestration and enterprise user experience, ensuring our internal teams can seamlessly adopt and trust AI-driven tools.

Req.#The recruiting efforts for this position are intended to fill an existing vacancy for a new position.

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 using React, Type Script, or Vue, 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 Lang Chain or Llama Index with leading model providers (OpenAI, Claude, Gemini, etc.)Collaborate closely with designers and product managers to iterate rapidly on novel AI UX patterns (chat assistants, prompt builders, feedback loops)
Ensure top-tier security, accessibility (a11y), observability, and test coverage across client-side and full-stack implementations

Requirements

Frontend Mastery: 5+ years of production experience with React, Type Script, or Vue for enterprise web applications

Engineering Seniority: 5–8 years of software engineering experience across the full web stack (frontend UIs, REST APIs, microservices)
AI Application Integration: 2+ years of experience integrating GenAI features, LLM APIs, and prompt UI patterns into web applications

Python & Cloud Services:
Strong Python backend development skills and 2+ years of experience consuming/building cloud microservices on AWS, Docker, and REST APIsComponent Libraries:
Proven experience building, documenting, and maintaining reusable component libraries, design systems, and custom hooks

Nice to have Conversational UX & Streaming:
Real-time streaming UX patterns (SSE/Web Sockets), prompt builders, citations, and summary UI components

Web Accessibility (a11y):
Deep knowledge of WCAG 2.1 AA compliance and accessible UI component architecture

LangChain for JavaScript:
Client-side or Node.js Lang Chain, Lang Graph, or Llama Index orchestration RAG & Vector Search:
Familiarity with RAG pipelines, vector search (Pinecone, Open Search), and embedding concepts AI Evaluation & UX:

Experience with AI evaluation tooling, feedback loops, and guardrails in user interfaces

We offer

Extended Healthcare with Prescription Drugs, Dental and Vision, and Healthcare Spending Account (Company Paid)
Life and AD&D Insurance (Company Paid)
Employee Assistance Program (Company Paid)
Telehealth (Company Paid)
Short-term Disability (Company Paid)
Long-Term Disability Paid Time Off (including vacation and sick days)
Registered Retirement Savings Plan (RRSP) with Company match

Maternity/Parental/Adoption Leave Top-up Employee Stock Purchase Program Critical Illness Insurance Employee Discounts Unlimited access to Linked In learning solutionsEPAM is a leading global provider of digital platform engineering and development services. We are committed to having a positive impact on our clients, 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…