Senior Fullstack Developer

We are seeking a Senior FullStack Developer to join our team at Marsh.This role will be based in Mexico City.This is a hybrid role that has a requirement of working at least three days a week in the office.As a Senior Fullstack Developer at Marsh, you will play a key role in evolving solutions from early proof of concept through scalable, production‐ready systems used by internal stakeholders.In this role, you are relied upon to ensure solutions meet enterprise standards for security, reliability, scalability, maintainability, and testability, and help teams apply generative AI responsibly and effectively in production environments.ResponsibilitiesLead the technical design and delivery of complex, AI‐enabled features or services.Design, build, and evolve full‐stack applications using modern frontend and backend frameworks.Build and maintain robust, high‐performance APIs using NestJS / NodeJS or FastAPI / Python.Integrate Large Language Model (LLM) capabilities into production system...