S Software Engineer, Agent Builder , US Mid Go TypeScript LLM

# Software Engineer, Agent Builder Full Time location _on San Francisco, CA, US  Midopen _in _new Apply on site Opens in a new tab on website.##

Job Description ABOUT USSierra is the leading platform for customer-facing AI agents, working with many of the world's biggest brands — including The GAP, Rocket Mortgage, SoFi, Sutter Health, and Soft Bank — to transform how they serve customers and grow their businesses. We are primarily an in-person company based in San Francisco, with growing offices across North America, Europe, and Asia.

We are guided by a set of values that are at the core of our actions and define our culture:
Trust, Customer Obsession, Craftsmanship, Intensity, and a commitment to balancing Family along the way. 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. Previously, he was co-CEO of Salesforce (which had acquired the company he founded, Quip) and CTO of Facebook. Bret was also one of Google's earliest product managers and co-creator of Google Maps. Before founding Sierra, Clay spent 18 years at Google, where he most recently led Google Labs.

Earlier, he started and led Google’s AR/VR effort, Project Starline, and Google Lens. Before that, Clay led the product and design teams for Google Workspace.

WHAT YOU’LL DO
- Simulation & Benchmarking:
How can we craft a simulation platform to test AI agents against every real-world scenario imaginable? (See τ-Bench https://sierra.ai/blog/benchmarking-ai-agents)- Content Management:
How do we create intuitive, no-code tools that allow anyone to guide and test AI agents?
- Agent Development Lifecycle:
How do we adapt traditional software development methodologies to accommodate AI agents’ non-deterministic behavior, natural language interactions, and reliance on large language models? (See Sierra’s ADLC https://sierra.ai/blog/agent-development-life-cycle)- Generative Agent Development:
How do we accelerate agent creation using generative tools like Cursor and Claude Code? Can we build self-improving systems based on real-world interactions, customer-driven feedback, and self-play?

WHAT YOU'LL BRING- A passion for being on the frontier of AI products.

- Motivation and high-agency to drive outcomes - we have a high-autonomy culture and each team member has lots of agency to overcome obstacles and achieve customer impact.

- Alignment to our company values throughout your work, notably finding a balance between Craftsmanship, Customer Obsession, and Competitive Intensity.

- 4+ years hands-on experience building production products and systems.

- Experience and comfort to build and ship full-stack solutions.

- Degree in Computer Science or related field, or equivalent professional experience.

EVEN BETTER...

- Experience building AI-powered products.

- A sharp eye for design.

- Experience with Go and Typescript.

- Experience building developer tooling, programming languages, or databases.

- Leadership experience on technical projects or teams.

OUR VALUES
- Trust:
We build trust with our customers with our accountability, empathy, quality, and responsiveness. We build trust in AI by making it more accessible, safe, and useful. We build trust with each other by showing up for each other professionally and personally, creating an environment that enables all of us to do our best work.

- Customer Obsession:
We deeply understand our customers’ business goals and relentlessly focus on driving outcomes, not just technical milestones. Everyone at the company knows and spends time with our customers. When our customer is having an issue, we drop everything and fix it.

- Craftsmanship:
We get the details…