Senior GenAI Full-Stack Engineer (UI & AI UX)

EPAM Systems Inc; United States; Remote; USD 120,000 - 180,000; Full time

Job summary

EPAM Systems Inc. is seeking a Senior Full Stack Software Engineer to build fast, intuitive web interfaces and frontend integration libraries for GenAI and intelligent automation.

You will deliver accessible, low-latency UI patterns and reusable components while connecting to LLM APIs and cloud microservices. You will collaborate with designers and product managers to iterate on AI UX patterns like chat assistants, prompt builders, and feedback loops, while ensuring security, accessibility,

Qualifications

• We require 3+ years of production app experience with React, TypeScript, or Vue in enterprise contexts.
• Strong backend skills and experience building RESTful services and cloud microservices.
• Experience integrating GenAI features, LLM APIs, and prompt UI patterns into web apps.
• Able to create, document, and maintain reusable component libraries and design systems.
• English proficiency at a professional level.

Responsibilities

• Design and deliver GenAI-powered web UI frontends with efficient client-side API integrations.
• Build responsive, accessible frontend experiences optimized for streaming responses and low latency.
• Develop and maintain reusable frontend component libraries and design systems for enterprise GenAI apps.
• Implement LLM-driven experiences using frameworks such as LangChain or LlamaIndex with OpenAI, Claude, or Gemini.
• Collaborate with designers and PMs to iterate on AI UX patterns like chat assistants and prompt builders.
• Ensure security, accessibility, observability, and robust test coverage across client-side and full-stack work.
• Create high-performance UIs for AI interactions including streaming text, prompts, citations, and summaries.
• Maintain shared libraries of reusable components to help internal teams embed GenAI into apps.

Skills

React

TypeScript

Vue

Full-stack development

GenAI integration

LLM APIs

Tools

AWS

Docker

REST APIs

LangChain

LlamaIndex

OpenAI API

Job description

EPAM Systems Inc. is seeking a Senior Full Stack Software Engineer to build fast, intuitive web interfaces and frontend integration libraries for GenAI and intelligent automation.

You will deliver accessible, low-latency UI patterns and reusable components while connecting to LLM APIs and cloud microservices. You will collaborate with designers and product managers to iterate on AI UX patterns like chat assistants, prompt builders, and feedback loops, while ensuring security, accessibility,