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Sierra

Software Engineer, Horizon

San Francisco, CA · On-site · Full time · Mid level

$230k–$390k / year

About the role

Build and improve long-horizon AI agents that pursue complex business outcomes across multiple channels. Develop reusable systems and solve complex technical problems to shape the Horizon product platform.

What you’ll do

• Create feedback loops and evaluation systems for agent self-improvement. • Design and ship agents for long-term business outcomes. • Build reusable systems and tools for faster agent deployment. • Solve complex problems across orchestration, data, and multi-channel engagement. • Translate validated solutions into durable product capabilities.

What you’ll bring

• Experience building and scaling production systems. • Strong platform and systems engineering fundamentals. • Ability to move between customer problems and technical implementation. • At least two years professional software engineering experience. • Experience with Python, TypeScript, Go, and React.

Life at Sierra

Flexible unlimited paid time off, medical/dental/vision benefits, parental leave, equity plans, and discretionary benefit stipend. Supportive culture valuing trust, customer obsession, craftsmanship, intensity, and family balance.

About Sierra

Sierra is a leading platform for customer-facing AI agents, partnering with major global brands to transform customer service and business growth.

Posted 4 days ago