Senior Full-Stack AI Agent Engineer (Python/React) Hybrid

Mercer UK is seeking a talented senior full‑stack developer to lead the AI Product team for the Pensions AI Assistant. You will own end‑to‑end development across backend, frontend and deployment, working with the lead Data Science/AI engineer and reporting to the Head of AI Product.

Hybrid or office-based work arrangements are supported. You will develop reliable, trustworthy systems with a strong emphasis on quality, performance and security, while gaining domain knowledge in pensions and

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