AI Agent Engineer — Production-Grade Systems

Sierra in London is seeking an experienced AI engineer to design and deliver production‑grade AI agents that drive revenue and scale across industries. You will own the Agent Development Life Cycle from pilot to deployment and work directly with customers to understand their needs while building scalable, reliable systems.

You will collaborate with research, product, and platform teams to evolve Sierra's core platform, prototype new tools, and shape the future of AI agent development.