Production AI Agent Engineer

Sierra; Greater London; On-site; GBP 90,000 - 150,000; Full time

Benefits offered by this job

Flexible time off

Medical, dental, vision benefits

Retirement plan

Equity plans

Parental leave

Lunch and snacks

Job summary

Sierra seeks an experienced engineer to design and deliver production-grade AI agents that scale across industries. You will own the Agent Development Life Cycle from pilot through deployment, partnering with large enterprises and cutting-edge London startups to embed AI across business stacks and drive innovation.

You will help shape Sierra's platform with customers, surfacing needs and prototyping tools while collaborating with research, product, and platform teams.

Qualifications

• Experience building end-to-end production systems.
• Strong problem-solving abilities in fast-changing environments.
• Builder mindset with ownership and speed.
• Comfort working with customers to understand needs and solve real problems.
• Fluent in English and German.

Responsibilities

• Design and deliver production-grade AI agents for revenue growth.
• Own the Agent Development Life Cycle from pilot to deployment.
• Partner with enterprises and startups to scale AI agents in production.
• Contribute to shaping Sierra's core platform and tooling.

Skills

End-to-end production systems

Problem solving

Builder mindset

Customer collaboration

Fluent German

Fluent English

React

TypeScript

Go

RAG pipelines

Tools

React

TypeScript

Go

Eval frameworks

Prompt engineering

Job description

Sierra seeks an experienced engineer to design and deliver production-grade AI agents that scale across industries. You will own the Agent Development Life Cycle from pilot through deployment, partnering with large enterprises and cutting-edge London startups to embed AI across business stacks and drive innovation.

You will help shape Sierra's platform with customers, surfacing needs and prototyping tools while collaborating with research, product, and platform teams.