Senior Principal Engineer, AI & SaaS Infra

Company: Fin. The highest performing Customer Agent
Apply for the Senior Principal Engineer, AI & SaaS Infra
Location: London
Job Description:

Fin is a leading AI Customer Agent company delivering 24/7 support across channels. We are seeking an experienced Principal Engineer to drive strategic initiatives, build back-end and front-end systems, and mentor engineers.

You will collaborate with designers, product managers, researchers, and data analysts to shape technical strategy. You will lead critical projects, contribute to architecture, and ensure scalable, reliable systems while staying close to product goals and customer value.

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Posted: September 2nd, 2026