Software Engineer, Horizon
About The Position
Sierra 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 SoftBank — 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.
Requirements
- Experience building and scaling end-to-end production systems.
- Strong platform and systems engineering fundamentals.
- The ability to move between customer problems, product design, and technical implementation.
- Strong technical judgment in ambiguous, fast-changing environments.
- A builder’s mindset and the ability to take products from zero to one.
- Comfort working directly with customers and understanding complex business processes.
- High agency, adaptability, and clear communication.
- At least two years of professional software engineering experience
- Experience with Python, TypeScript, or Go and React.
Nice To Haves
- Experience as a founder, founding engineer, or early engineer at a startup.
- Experience building workflow, orchestration, event-driven, or distributed systems.
- Experience developing platforms or reusable infrastructure for other engineers.
- Experience building or deploying AI and LLM-powered products.
- Familiarity with enterprise integrations, APIs, data pipelines, and systems of record.
- Experience working in complex industries such as financial services or healthcare.
Responsibilities
- Build primitives for self improvement: Create the feedback loops, evaluation systems, memory, signals, and decisioning infrastructure that help long-running agents learn from outcomes and improve over time.
- Build the future of long-horizon agents: Design and ship agents that pursue complex business outcomes over days, weeks, or months across voice, SMS, email, and other channels.
- Turn 0-to-1 work into a platform: Identify patterns and build reusable systems, abstractions, and tools that make future Horizon agents faster and easier to launch.
- Solve technically complex problems: Build across orchestration, integrations, data, memory, signals, decisioning, observability, and multi-channel engagement.
- Shape the Horizon product: Surface platform gaps through hands-on implementation and work with product and engineering to define Horizon’s architecture and roadmap.
- Create a clean path beyond the POC: Once a solution is validated, translate what you built into durable product capabilities and enable a successful handoff for continued deployment.
Benefits
- Flexible (unlimited) paid time off
- Medical, dental, and vision benefits for you and your family
- Life insurance and disability benefits
- Retirement plan dependent on country of employment
- Parental leave
- Fertility and family building benefits through Carrot
- Lunch, as well as delicious snacks and coffee to keep you energized
- Discretionary benefit stipend giving people the ability to spend where it matters most
- Free alphorn lessons
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What This Job Offers
Job Type
Full-time
Career Level
Entry Level
Education Level
No Education Listed
