Lead Fullstack Developer (JavaScript)

We're on the hunt for a Lead Fullstack Developer to become part of our team. This position sits at the intersection of business objectives and hands-on technical delivery within a spread-out, multi-functional organization. You'll apply disciplined engineering thinking to fast-paced, often undefined challenges, all while influencing how new technologies get adopted across the company. It's a chance to leave a real mark on how enterprise systems grow and interconnect Responsibilities Work in close coordination with product owners and stakeholders spanning IT, Sales, Finance, and HR, matching schedules to enable live collaboration Turn ambiguous internal use cases into concrete architecture plans, UX/flow designs, API specifications, and a ready-to-build backlog for the team based in India Architect and connect agentic workflows spanning enterprise platforms including Salesforce, ServiceNow, Jira, Glean, and Oracle HCM Drive resolution of intricate integration work, spanning authentication setup, MCP tool access, data contract definition, RBAC design, error handling, and production go-live Engage daily with the India-based team, clearing up requirements, conducting PR reviews, removing integration roadblocks, and ensuring release quality holds Develop prototypes where necessary, spanning UI work, agent flow design, or MCP/LLM implementation, then pass a production-ready backlog over to the India team Bake security, observability, and reusability into the build approach so each agent stands as a lasting solution rather than a throwaway demo Requirements Five-plus years of practical, relevant full-stack engineering experience, with current, hands-on delivery track record Minimum one year of experience directing and overseeing development teams Deep proficiency in TypeScript/JavaScript combined with a contemporary frontend framework such as React or equivalent Strong backend engineering background using Node.js or Python, coupled with solid skills in API and integration architecture Proven track record delivering AI/LLM solutions, spanning tool calling, RAG, agent systems, MCP, prompt workflows, or similar production-grade experience Experience converting stakeholder workshop outcomes into tangible architecture and a workable, buildable backlog Hands-on AWS delivery background, covering Lambda, API Gateway, ECS/EKS, S3, RDS/DynamoDB, IAM, and CloudWatch, plus enterprise authentication approaches like SSO/Okta and RBAC Skilled communicator capable of driving technical dialogue in English with US-based stakeholders, holding working fluency at B2 level or higher, converting business needs into agentic system designs Nice to have Knowledge of MCP gateways, LLM gateways, model routing, policy/audit frameworks, and usage/cost management tools Background applying OpenTelemetry or comparable observability solutions to monitor agent traces, tool calls, latency, and failures Experience working within platforms such as Salesforce, Gong, Clari, Glean, ServiceNow, Oracle HCM, Concur, or similar HR/IT tools Track record transforming internal platforms or prototypes into robust, enterprise-grade production services 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.