Software Engineer, Agent Architecture

Sierra
San Francisco
Workplace: OnsiteFull timeUSD 230,000 - 390,000 annuallyFunction: Software EngineeringExperience: 4+ yearsEducation: bachelorsSkills: ["Communication","Problem-solving","Teamwork","Initiative","Adaptability"]

Join Sierra to build core systems powering AI agents, design a steerable agent loop, and improve retrieval, grounding, and evaluation frameworks. Work on the Agent SDK in a production environment, contributing to a high-autonomy culture with a strong emphasis on scalable software, reliability, and measurable agent quality.

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FursaFursa
Sierra
Sierra
5 months ago

Software Engineer, Agent Architecture

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Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI
Last checked: 9 hours agoStatus: Live
Reposted: similar role first listed 9 months ago

Job Summary

Join Sierra to build core systems powering AI agents, design a steerable agent loop, and improve retrieval, grounding, and evaluation frameworks. Work on the Agent SDK in a production environment, contributing to a high-autonomy culture with a strong emphasis on scalable software, reliability, and measurable agent quality.
Location: San Francisco
Workplace: Onsite
Employment Type: Full time
Job Function: Software Engineering

Key Responsibilities

  • •Build the core systems that power agents, including the Agent SDK— the orchestration engine, runtime, and primitives that define how agents reason, take actions, and interact with users and systems.
  • •Design the agentic loop to define primitives for steerable, verifiable, conversational, and adaptive agents operating in real-world environments.
  • •Improve retrieval and grounding to ensure agents provide accurate, trustworthy responses by effectively retrieving and using knowledge.
  • •Build evaluation systems and frameworks to measure and improve agent quality over time.
  • •Collaborate with a high-autonomy team to ship production-grade features that scale with customer needs.

Pay and Benefits

Salary: USD 230,000 - 390,000 annually
Equity and Bonus:Equity
Perks:Health InsuranceDentalVision401kPensionParental LeaveEquityAlphorn LessonsFertility Benefits

Key Requirements

  • •4+ years hands-on experience building production products and systems.
  • •Strong software engineering fundamentals and experience building production systems.
  • •Degree in Computer Science or related field, or equivalent professional experience.
  • •A passion for being on the frontier of AI products.
  • •Motivation and high-agency to drive outcomes in a high-autonomy culture.
Experience:4+ yearsAISaaS
Education:Bachelor's in Computer Science
Skills:CommunicationProblem-solvingTeamworkInitiativeAdaptability
Tech Stack:GoTypeScript

Company Brief

Sierra
Develops advanced AI agents and tools focused on building autonomous, generalist machine learning systems to assist developers and enterprises in automating complex workflows, decision-making, and application-level tasks.
Industry: AI & Machine Learning
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