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Software Engineer, Agent

SierraLondonEngineering
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Salary
£150K - £315K GBP
Job type
Full-time
Posted
13 Feb 2025
Status
Open · checked 7d ago

About this role

Role Overview

The Software Engineer, Agent position at Sierra in London is a full-time engineering role focused on designing, building, and scaling mission-critical AI agents for global enterprises. This opportunity suits a driven developer with a builder's mindset who wants to shape the future of customer-facing artificial intelligence solutions.

Key Responsibilities

Design and deliver production-grade AI agents that operate reliably in live environments across industries like commerce, healthcare, and finance.
Drive the entire Agent Development Life Cycle, maintaining complete ownership and autonomy from initial pilot stages through deployment and continuous iteration.
Partner directly with leaders at major global enterprises and cutting-edge startups in London to understand complex business challenges and embed AI agents effectively.
Shape the evolution of the core platform by identifying unmet customer needs, prototyping new features, and collaborating closely with product, research, and platform teams.
Experiment with advanced voice models, develop generalizable industry-specific agent frameworks, and build systems that handle complex interactions like subscription churn management.

Requirements

Professional experience building and scaling end-to-end production software systems.
Strong technical problem-solving capabilities, particularly within fast-changing and ambiguous environments.
High agency and a tinkerer's mindset, displaying creativity in overcoming obstacles to ship robust solutions.
Comfort communicating directly with customers to identify real-world needs and solve business problems.
Excellent communication skills that allow for clear, direct, and persuasive interaction across both technical and non-technical audiences.

Nice to Have

Experience building or deploying AI and LLM systems directly into production environments.
Background as a founder or founding engineer, demonstrating an understanding of craft, speed, and ownership.
Familiarity with modern AI tooling, evaluation frameworks, prompt engineering, and RAG pipelines.
Prior technical experience working with React, TypeScript, or Go.
Previous professional roles involving direct customer interfacing or the leadership of technical projects with external stakeholders.

Skills and Tools

React
TypeScript
LLM technologies
RAG pipelines

Salary and Benefits

Annual salary range between 150,000 and 315,000 GBP.
Flexible and unlimited paid time off.
Comprehensive medical, dental, and vision insurance coverage for employees and their families.
Life insurance and disability benefits.
Country-dependent retirement plan and participation in equity plans.
Parental leave alongside fertility and family building benefits through Carrot.
Office perks including lunch, snacks, coffee, a discretionary benefit stipend, and free alphorn lessons.

About the Company

Sierra operates as a leading platform for customer-facing artificial intelligence agents, collaborating with major global brands such as The GAP, SoFi, Rocket Mortgage, Sutter Health, and SoftBank. The organization is guided by core values including Trust, Customer Obsession, Craftsmanship, Intensity, and Family. Co-founded by Bret Taylor, current Board Chair of OpenAI and former tech executive, and Clay Bavor, former leader of Google Labs, the company maintains its primary presence in San Francisco alongside growing global offices.

How to Apply

Interested candidates should visit the official Sierra careers page to submit an application and learn more about open opportunities.

Skills and tech stack

ReactTypeScriptLLMRAG

Questions candidates ask

What is the salary range for the Software Engineer, Agent role?

The salary for this position ranges from 150,000 to 315,000 GBP per year.

Where is this job located?

This position is based full-time in London.

What technical skills are highlighted for this position?

Key technical skills mentioned include React, TypeScript, Large Language Models (LLMs), and Retrieval-Augmented Generation (RAG) pipelines.

Who founded Sierra?

Sierra was co-founded by Bret Taylor, who serves as the Board Chair of OpenAI, and Clay Bavor, who previously spent 18 years at Google leading Google Labs.

What benefits are offered to full-time employees?

Full-time employees receive flexible paid time off, medical, dental, and vision benefits, life and disability insurance, a retirement plan, parental leave, Carrot fertility benefits, daily lunch and snacks, a discretionary benefit stipend, and equity plan participation.

Ready to apply?

The application is on the official Sierra careers page.

Apply on company site