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Software Engineer, Agent Harness

LM Studio· Engineering
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New York City$150k - $350kFull-timePosted 2mo ago

About the role

Agent Harness Software Engineer to build the core agent system behind Bionic, LM Studio’s agent for work and code, enabling open models to effectively work with codebases, documents, files, software tools, and the user’s computer.

Responsibilities

  • Build and improve the agent harness that powers Bionic
  • Make local and cloud models reliable at using files, search, Git, the shell, web tools, and document tools
  • Integrate new open models and optimize how they perform in the Bionic agent harness
  • Manage conversation history, working context, tool results, interruptions, and recovery
  • Build repeatable evaluations and diagnostics for understanding where and why an agent fails
  • Constrain the model in a smart way so it remains useful
  • Work across Bionic, the LM Studio runtime, and LM Studio cloud to improve the complete system

Qualifications

  • Significant experience building production software involving language models, developer tools, or automation
  • Strong understanding of tool calling, structured model output, context construction, and streaming inference
  • Experience building stateful systems that perform multi-step work and recover cleanly from failures
  • Excellent TypeScript and general software engineering fundamentals
  • Deep interest in open models and a practical understanding of their strengths and limitations
  • Works with high technical intensity and takes personal responsibility for the finished product

Skills

Required:TypeScriptLanguage ModelsTooling and automation

Benefits

  • Competitive salary and equity grants
  • Great medical, vision, dental healthcare plans
  • Catered team lunch / expensed dinners in the office
  • Flexible PTO
  • Flexible WFH
  • Sun-drenched office in SoHo in NYC
Last updated Aug 12, 2026. Interested? Apply on the company site.

About LM Studio

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