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Sierra builds conversational AI agents that companies deploy for customer-facing support — agents that handle real transactions and resolutions rather than scripted responses.
Founded in 2023 by Bret Taylor and Clay Bavor, Sierra focuses on enterprise-grade, brand-specific AI customer experience.
Software Engineer, Inference
New
Build systems that serve foundation models fast, reliably, and efficiently at scale. You'll design Sierra's inference architecture across self-hosted and third-party infrastructure...
Research Engineer, Applied Research
New
Build and deploy machine learning systems powering customer-facing AI agents, focusing on post-training, voice AI, and long-horizon task execution. You'll frame product problems as...
Software Engineer, Horizon
Build systems for long-running AI agents that improve over time through feedback loops, evaluation, and memory infrastructure. The role involves designing agents that pursue comple...
Software Engineer, Agent - Tech, Media & Telecom
Software Engineer, Agent - Insurance
Software Engineer, Agent - Travel & Hospitality
Software Engineer, Agent - Retail
Software Engineer, Agent - Public Sector
Software Engineer, Agent - Financial Services
Software Engineer, Agent - Healthcare
Senior Accountant
Manage month-end accounting close procedures globally, including reconciliations, expense review, and cash application. Support audit preparation and coordinate with external audit...
Software Engineer Intern, Agent (Summer 2027)
Intern
You'll work directly on production AI agents for Sierra's customers, contributing to design, development, and feature shipping while learning from real-world use cases. The interns...
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