Senior Full-Stack Engineer for AI Agent Platform

Mercer UK is seeking a talented senior full-stack developer to lead the engineering of our AI Assistant tech stack, spanning backend Python, frontend React/Next.js, and deployment on OSS2/Kubernetes. You will work with our small, hands-on team to deliver reliable, customer-facing AI products and help shape code quality and security standards.

This role offers hybrid or office-based work in the UK and provides the opportunity to gain pensions domain expertise while building scalable systems that