Lead Software Engineer, Applied AI (Frontend Leading)

EPAM Systems, Inc.; United States; Remote; USD 150,000 - 165,000; Full time

Job summary

EPAM Systems, Inc. seeks a Lead Software Engineer, Applied AI (Frontend Leading) to build GenAI-powered UIs and frontend integration libraries across IT, HR, Finance, and more.

You will bridge LLM orchestration with enterprise UX, delivering responsive interfaces with streaming capabilities. Requirements include 5+ years with React/TypeScript/Vue, 5–8 years across full web stack, and 2+ years integrating GenAI features.

Qualifications

• 5+ years of production experience with modern frontend frameworks (React/TypeScript/Vue).
• Experience designing and building GenAI-powered frontend UIs and client-side integrations.
• Ability to build reusable component libraries and design systems for enterprise apps.

Responsibilities

• Design and build GenAI-powered frontend applications and integrations.
• Develop responsive, accessible frontend interfaces focused on low latency and streaming responses.
• Create and maintain a library of reusable UI components, hooks, and design systems.
• Implement LLM-based experiences using LangChain or LlamaIndex with leading model providers.
• Collaborate with designers and product managers to iterate on AI UX patterns and ensure security, accessibility, and test coverage.

Skills

React

TypeScript

Vue

REST APIs

Streaming UI

Tools

LangChain for JavaScript

LlamaIndex

Pinecone

OpenSearch

Job description

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 Support.In 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.#1090018301ResponsibilitiesDesign and build end-to-end GenAI-powered applications, emphasizing intuitive web-based UIs and performant client-side API integrationsDevelop responsive, accessible frontend interfaces using React, TypeScript, or Vue, engineered for streaming responses and low latencyBuild and maintain a library of reusable frontend components, hooks, and design systems for enterprise GenAI applicationsImplement LLM-based experiences using frameworks like LangChain or LlamaIndex 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 implementationsRequirementsFrontend Mastery: 5+ years of production experience with React, TypeScript, or Vue for enterprise web applicationsEngineering 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 applicationsPython & 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 hooksNice to haveConversational UX & Streaming: Real-time streaming UX patterns (SSE/WebSockets), prompt builders, citations, and summary UI componentsWeb Accessibility (a11y): Deep knowledge of WCAG 2.1 AA compliance and accessible UI component architectureLangChain for JavaScript: Client-side or Node.js LangChain, LangGraph, or LlamaIndex orchestrationRAG & Vector Search: Familiarity with RAG pipelines, vector search (Pinecone, OpenSearch), and embedding conceptsAI Evaluation & UX: Experience with AI evaluation tooling, feedback loops, and guardrails in user interfacesWe offerMedical, Dental and Vision Insurance (Subsidized)Health Savings AccountFlexible Spending Accounts (Healthcare, Dependent Care, Commuter)Short-Term and Long-Term Disability (Company Provided)Life and AD&D Insurance (Company Provided)Employee Assistance ProgramUnlimited access to LinkedIn learning solutionsMatched 401(k) Retirement Savings PlanPaid Time Off – the employee will be eligible to accrue 15-25 paid days, depending on specific level and tenure with EPAM (accrual eligibility may change over time)Paid Holidays - nine (9) total per yearLegal Plan and Identity Theft ProtectionAccident InsuranceEmployee DiscountsPet InsuranceEmployee Stock Purchase ProgramIf otherwise eligible, participation in the discretionary annual bonus programIf otherwise eligible and hired into a qualifying level, participation in the discretionary Long-Term Incentive (LTI) ProgramThis Remote Position Cannot be Performed in New York City.EPAM 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 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.Engineer the Future with a Career at EPAMThis posting includes a good faith range of the salary EPAM would reasonably expect to pay the selected candidate. The range provided reflects base salary only. Individual compensation offers within the range are based on a variety of factors, including, but not limited to: geographic location, experience, credentials, education, training; the demand for the role; and overall business and labor market considerations. Most candidates are hired at a salary within the range disclosed. Salary range: $150,000 - $165,000. In addition, the details highlighted in this job posting above are a general description of all other expected benefits and compensation for the position.Applications will be accepted on a rolling basis.In accordance with the LA County Fair Chance Ordinance, you may find a copy of the Notice containing a summary of the Ordinance’s key provisions here: Concept FCO Posting 8 27 24 (lacounty.gov)EPAM will not provide new H-1B visa sponsorship for this position. Candidates with existing transferable H-1B status may be considered.It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.