Software Engineer, Agent Builder

Sierra•San Francisco, CA
•$230,000 - $390,000

About The Position

Sierra is hiring a Software Engineer for its Agent Builder work. The role focuses on building tools and systems for developing, testing, and improving customer-facing AI agents. Areas of work include creating simulations and benchmarks for testing agents against real-world scenarios; developing intuitive no-code content-management tools for guiding and testing agents; adapting software-development practices to the non-deterministic behavior and natural-language interactions of AI agents; and accelerating agent development with generative tools and self-improving systems informed by real-world interactions, customer feedback, and self-play. Sierra is primarily an in-person company based in San Francisco, with offices across North America, Europe, and Asia. Its culture is guided by Trust, Customer Obsession, Craftsmanship, Intensity, and balancing Family. Sierra encourages applicants to apply even if their experience does not precisely match the posting and aims to evaluate applicants consistently without regard to legally protected characteristics.

Requirements

  • Passion for working on frontier AI products.
  • Motivation and high agency to drive outcomes in a high-autonomy culture.
  • Alignment with Sierra’s values, particularly balancing Craftsmanship, Customer Obsession, and Competitive Intensity.
  • At least 4 years of hands-on experience building production products and systems.
  • Experience and comfort building and shipping full-stack solutions.
  • A degree in Computer Science or a related field, or equivalent professional experience.

Nice To Haves

  • 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.

Responsibilities

  • Build simulation and benchmarking platforms to test AI agents against real-world scenarios.
  • Create intuitive, no-code content-management tools that enable people to guide and test AI agents.
  • Adapt software-development methodologies to AI agents’ non-deterministic behavior, natural-language interactions, and reliance on large language models.
  • Accelerate agent creation using generative development tools.
  • Explore self-improving systems informed by real-world interactions, customer feedback, and self-play.
  • Build and ship full-stack solutions.

Benefits

  • Flexible, unlimited paid time off.
  • Medical, dental, and vision benefits for employees and their families.
  • Life insurance and disability benefits.
  • Retirement plan dependent on country of employment.
  • Parental leave.
  • Fertility and family-building benefits through Carrot.
  • Lunch, snacks, and coffee.
  • Discretionary benefit stipend.
  • Free alphorn lessons.
  • Eligible full-time employees can participate in Sierra’s equity plans, subject to applicable plan terms and policies.
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