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Engineering Manager, Agent

SierraLondonEngineering
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Salary
£240K - £320K GBP
Job type
Full-time
Posted
27 Feb 2026
Status
Open · checked 7d ago

About this role

Role Overview

Sierra is seeking an Engineering Manager, Agent to lead the design and delivery of production-grade AI systems from the London office. This full-time role suits an experienced technical leader who thrives in fast-paced environments and wants to shape the future of customer-facing artificial intelligence platforms.

Key Responsibilities

Manage and grow a talented team of engineers building high-performance, reliable, and intuitive AI agents that drive company growth and operate at scale.
Own the entire Agent Development Life Cycle, guiding projects from initial pilot through deployment, scaling, and continuous iteration.
Partner directly with large enterprise clients and innovative startups to understand business challenges and deliver impactful technical solutions.
Shape the evolution of the core platform by prioritizing unmet user needs and collaborating closely with research, product, and platform engineering teams.
Cultivate a culture of technical excellence, operational reliability, and high customer impact across all deliverables.

Requirements

Demonstrated experience leading engineering teams that successfully build and scale end-to-end production systems.
Strong technical problem-solving capabilities to navigate ambiguous and fast-changing scenarios.
A collaborative leadership style that balances high quality standards with empathy and team velocity.
Proven ability to engage directly with customers and translate business requirements into technical deliverables.
Excellent communication skills tailored for both technical and non-technical audiences.
A degree in Computer Science or a related field, or equivalent professional experience.

Nice to Have

Prior background in developing AI agents or building and deploying AI and LLM systems in production environments.
Previous experience as a startup founder, engineering lead, or builder demonstrating high ownership and urgency.
Familiarity with modern AI tooling such as evaluation frameworks, RAG pipelines, and prompt engineering.
Working knowledge of React, TypeScript, or Go.
Experience interfacing directly with external stakeholders and customers.

Skills and Tools

React
TypeScript
Large Language Models (LLMs)
RAG Pipelines
Evaluation Frameworks and Agent Tooling

Salary and Benefits

Annual salary range between 240,000 and 320,000 GBP.
Flexible, unlimited paid time off.
Comprehensive medical, dental, and vision coverage for employees and their families.
Life insurance, disability benefits, and local retirement plan options.
Parental leave alongside fertility and family building benefits through Carrot.
Office perks including daily lunch, snacks, coffee, a discretionary benefit stipend, and equity plan eligibility.

About the Company

Sierra is a leading platform for customer-facing artificial intelligence agents, partnering with major global brands to transform customer service and business growth. Co-founded by Bret Taylor and Clay Bavor, the organization operates on core values of trust, customer obsession, craftsmanship, intensity, and family balance. Based primarily in San Francisco, the company maintains growing international hubs across North America, Europe, and Asia.

How to Apply

Interested candidates should review the full job details and submit an application directly on the official Sierra careers page.

Skills and tech stack

ReactTypeScriptLLMRAG

Questions candidates ask

What is the salary range for the Engineering Manager, Agent role?

The position offers an annual salary between 240,000 and 320,000 GBP.

Where is this job located?

This full-time role is based out of the Sierra office in London.

What technical skills are nice to have for this position?

Preferred technical exposure includes AI agent development, LLM production systems, RAG pipelines, prompt engineering, React, TypeScript, and Go.

What qualifications are required to apply?

Applicants need experience leading engineering teams that build production systems, strong problem-solving skills, customer-facing capabilities, and either a degree in Computer Science or equivalent professional experience.

What benefits are provided by Sierra?

Full-time employees receive flexible paid time off, medical, dental, vision, life and disability insurance, retirement plans, parental leave, fertility benefits through Carrot, daily meals, equity eligibility, and a discretionary benefit stipend.

Ready to apply?

The application is on the official Sierra careers page.

Apply on company site