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Software Engineer, Agents

Sim - San Francisco | OnSite

Posted Jun 10, 2026

Benefits

Parental leave
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Non-birth-parent leave
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Family-building benefits
  • Fertility benefits: Not verified
  • Adoption assistance: Not verified
  • Surrogacy assistance: Not verified
Mental health support
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Relocation assistance
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Childcare support
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Learning budget
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Verification
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Salary
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401(k) match
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Market context

U.S. role benchmark (BLS OEWS)
$116,543 U.S. median for this role
Projected growth (BLS Employment Projections)
+9.8% - Much faster than average

Matched to SOC 15-1252 - Software Engineering aggregate by role bucket.

Source: U.S. Bureau of Labor Statistics, OEWS, May 2024 and Employment Projections, 2024-2034.

Role

Role function
Engineering From the posting source checked Jun 20, 2026
Seniority
Mid From the posting source checked Jun 20, 2026
Work mode
Onsite From the posting source checked Jun 20, 2026
In-office days
5 days From the posting source checked Jun 20, 2026

Schedule

Shift type
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Weekend work
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Application

Cover letter
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Assessment
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Deadline
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Where they hire

State eligibility is not yet verified.

About this role

Software Engineer, Agents San Francisco | OnSite ABOUT THE ROLE You'll own end-to-end development of our core agentic workflow engine and Copilot - the AI assistant that helps developers build and debug workflows using natural language, turning high-level intent into executable, reliable agents. This spans our backend (Next.js), orchestration layer, and all integrations with LLMs and external APIs. Copilot is currently the best-in-class tool for building workflows with natural language. Your job is to keep it there and push it further - making it faster, more reliable, and capable of handling increasingly complex agentic architectures. This is a foundational role. You'll set architecture decisions, reliability standards, and coding patterns that define how the core product works. On a team of 5, your work ships to tens of thousands of developers on fast release cycles. WHAT YOU'LL DO - Own the agentic workflow engine: the runtime that executes multi-step, tool-using agent workflows in production - Build and evolve Copilot - our natural language interface for creating, editing, and debugging workflows - Design and maintain integrations with LLM providers (OpenAI, Anthropic, Google, local models via Ollama) and external APIs - Architect the orchestration layer that turns visual flows into reliable, observable agent executions - Set technical standards for the codebase - reliability, testing, code quality, and architecture patterns - Work across the stack in our Next.js monorepo, shipping to production daily - Debug hard problems at the intersection of LLMs, distributed systems, and developer tooling WHAT WE'RE LOOKING FOR - Strong generalist

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