Senior Fullstack Developer (JavaScript)

We are looking for a Senior Fullstack Developer to join our team. In this role, you'll bridge business needs with technical execution across a distributed, cross-functional environment. You'll bring engineering rigor to fast-moving, ambiguous problems while helping shape how emerging technologies are adopted at scale. This is an opportunity to make a tangible impact on how enterprise systems evolve and connect.

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

Requirements

• 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

Nice to have

• Familiarity with MCP gateways, LLM gateways, model routing, policy/audit mechanisms, and usage/cost control systems
• Experience with OpenTelemetry or similar observability tools for tracking agent traces, tool calls, latency, and failure points
• Background working with platforms such as Salesforce, Gong, Clari, Glean, ServiceNow, Oracle HCM, Concur, or similar HR/IT systems
• Experience hardening internal platforms or prototypes into enterprise-ready, production-grade services

Benefits

• 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