Lead Full Stack Software Engineer

EPAM Systems; Colombia; On-site; COP 120,000,000 - 210,000,000; Full time

Benefits offered by this job

Healthcare benefits

Employee financial programs

Paid time off and sick leave

Upskilling and certification courses

LinkedIn Learning access

Job summary

EPAM Systems in Colombia is seeking a Lead Full Stack Software Engineer to build GenAI-powered applications with intuitive web UIs and robust client-side integrations. You will collaborate with cross-functional teams to deliver scalable interfaces and reusable components for enterprise GenAI solutions.

The role requires 5+ years in React/TypeScript or Vue, full-stack experience, and strong Python backend skills with AWS/Docker.

Qualifications

• 5+ years building production apps with React, TS or Vue for enterprise use cases.
• 5-8 years full-stack experience spanning frontend UIs, REST APIs, and microservices.
• 2+ years integrating GenAI features and LLM APIs into web apps.
• Solid Python backend skills and 2+ years with cloud microservices on AWS, Docker.
• Proven track record building reusable component libraries and design systems.
• English proficiency at B2+ level or higher.

Responsibilities

• Architect and develop GenAI-powered applications with web UIs and client-side integrations.
• Craft responsive interfaces for streaming responses with low latency.
• Build and maintain a reusable frontend component library and design system.
• Bring LLM-based experiences using LangChain, LlamaIndex with OpenAI/Claude/Gemini.
• Collaborate with designers and product managers to iterate AI UX patterns.
• Ensure security, observability, and test coverage across client-side and full-stack.
• Produce high-performance web UIs for AI-driven interactions like streaming text.
• Maintain transparency and trust in AI outputs in the UI.

Skills

React

TypeScript

Vue

Full-Stack

GenAI

Python

English (B2+)

Tools

AWS

Docker

REST APIs

Job description

EPAM is a leading global provider of digital platform engineering and development services. We are committed to having a positive impact on our customers, 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.

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

EPAM is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, age, sexual orientation, gender identity or expression, disability, protected veteran status, or any other characteristic protected by applicable law.