Senior Fullstack Engineer: AI/LLM & Enterprise Integrations

EPAM Systems; México; On-site; MXN 900,000 - 1,200,000; Full time

Benefits offered by this job

Healthcare benefits

Employee programs

Paid time off

Upskilling & certifications

LinkedIn Learning access

Global career opportunities

Volunteer opportunities

Award-winning culture

Job summary

EPAM Systems is seeking a Senior Fullstack Developer to bridge business needs with technical execution in a distributed, cross-functional environment. You will design architectures, implement UI with React, and build robust backend services in Node.js or Python while delivering AI/LLM-powered solutions.

Join India-based and other global teams to shape enterprise integrations, ensure secure, scalable backends, and own production-ready backlogs.

Qualifications

• 3+ years of hands-on, relevant experience as a full-stack engineer, with recent, active delivery work.
• Strong command of TypeScript/JavaScript paired with a modern frontend framework such as React or similar
• Solid backend development experience using Node.js or Python, along with strong API and integration design skills
• Demonstrated experience delivering AI/LLM-powered solutions, covering tool calling, RAG, agents, MCP, prompt workflows, or comparable production work
• Background translating stakeholder workshop discussions into concrete architecture and an actionable, buildable backlog
• Practical AWS delivery experience, including Lambda, API Gateway, ECS/EKS, S3, RDS/DynamoDB, IAM, and CloudWatch, along with enterprise authentication methods such as SSO/Okta and RBAC
• Confident communicator able to lead technical discussions in English with US-based stakeholders, with working fluency at B2 level or higher, translating business requirements into agentic architectures

Responsibilities

• Coordinate closely with product owners and stakeholders across IT, Sales, Finance, and HR, aligning working hours to support real-time collaboration
• Convert loosely defined internal use cases into clear architecture, UX/flow design, API contracts, and a development-ready backlog for the India-based team
• Design and integrate agentic workflows connecting enterprise systems such as Salesforce, ServiceNow, Jira, Glean, and Oracle HCM
• Take ownership of complex integration challenges, including authentication, MCP tool access, data contracts, RBAC configuration, error handling, and production cutover
• Collaborate daily with the India-based pod, clarifying requirements, reviewing pull requests, resolving integration blockers, and safeguarding release quality
• Build prototypes as needed, covering UI, agent flow, or MCP/LLM paths, then transition a production-ready backlog to the India team
• Factor in security, observability, and reusability throughout the build process so each agent becomes a durable asset rather than a one-off demo

Skills

TypeScript/JavaScript

React

Backend development (Node.js/Python)

AI/LLM-powered solutions

AWS services

RBAC & SSO

English communication

Tools

AWS Lambda

API Gateway

ECS/EKS

S3

RDS/DynamoDB

IAM

CloudWatch

Job description

EPAM Systems is seeking a Senior Fullstack Developer to bridge business needs with technical execution in a distributed, cross-functional environment. You will design architectures, implement UI with React, and build robust backend services in Node.js or Python while delivering AI/LLM-powered solutions.

Join India-based and other global teams to shape enterprise integrations, ensure secure, scalable backends, and own production-ready backlogs.