These values are the foundation of our work, and we are committed to upholding them in everything we do.

Our co-founders are Bret Taylor and Clay Bavor. Bret currently serves as Board Chair of OpenAI and has held significant roles at Salesforce and Facebook. Clay has spent 18 years at Google, leading various innovative projects.

About the Role

Job Title: Software Engineer, Agent
Location: London
Employment Type: Full-time
Location Type: On-site
Department: Engineering, Agent Engineering
Compensation: £120K – £225K • Offers Equity

Responsibilities

• Design and deliver production-grade AI agents: Build and ship highly performant, reliable, and intuitive AI agents that drive revenue directly to Sierra's growth.
• Drive the Agent Development Life Cycle (ADLC): Own the process from initial pilot through deployment and continuous iteration, defining best practices along the way.
• Partner with enterprises and startups: Work with leaders at large enterprises and cutting-edge startups to build AI agents that transform operations at scale.
• Build the future of the platform: Guide the evolution of Sierra's core platform by surfacing unmet needs and collaborating with research, product, and platform teams.

Example Projects

• Design and build AI agents for telecommunications and media companies.
• Develop AI agents capable of navigating complex customer interactions.
• Create generalizable AI agent frameworks for industry-specific use cases.
• Facilitate design partnerships for new product initiatives.
• Experiment with the latest voice models for enterprise-grade customers.

Qualifications

• Experience building and scaling end-to-end production systems.
• Strong technical problem-solving skills in fast-changing environments.
• A builder and tinkerer’s mindset with high agency.
• Comfort working directly with customers to solve real-world problems.
• Excellent communication skills across technical and non-technical audiences.

Preferred Qualifications

• Experience building or deploying AI/LLM systems in production.
• Background as a founder or founding engineer.
• Familiarity with tools that power today's AI agents.
• Prior experience with React, TypeScript, and/or Go.
• Previous roles interfacing with customers or leading technical projects.

Our Values

• Trust: Build trust through accountability, empathy, quality, and responsiveness.
• Customer Obsession: Focus on driving outcomes and understanding customer goals.
• Craftsmanship: Pay attention to detail and continuously self-improve.
• Intensity: Play to win and address failures openly.
• Family: Support and respect each other, promoting balance and intensity.

Benefits

We offer the following to full-time employees:

• Flexible (Unlimited) Paid Time Off
• Medical, Dental, and Vision benefits for you and your family
• Life Insurance and Disability Benefits
• Retirement Plan (e.g., 401K, pension) with Sierra match
• Parental Leave
• Fertility and family building benefits through Carrot
• Lunch, snacks, and coffee
• Discretionary Benefit Stipend
• Free alphorn lessons

These benefits are subject to change and are detailed in Sierra's policies. Eligible full-time employees can participate in Sierra's equity plans.

Diversity and Inclusion

We're working to bring the transformative power of AI to every organization. We believe that our work and culture are better when we encourage, support, and respect diverse skills and experiences. We encourage you to apply even if your experience doesn't precisely match the job description.