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Senior Software Engineer, Agents

Harvey· Engineering
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Hybrid (San Francisco)$193.4k - $290kFull-timePosted 8mo ago

About the role

Role focused on building and optimizing AI agent systems for legal professionals, including environment design, model selection, context management, tool creation, and evaluation harnesses to enable fast iteration and higher quality task completion.

Responsibilities

  • Partner with customers and PMs to understand legal workflows, design practical evaluations that capture what “excellent” means, and ship agents that get the job done.
  • Optimize agent performance through prompt engineering, model selection, tool design, skill writing, context window management, and eval harness development.
  • Work with our model infra team to design and implement infrastructure for low-latency agent execution, including caching strategies, parallel tool calls, or subagent patterns.
  • Improve our observability and instrumentation to profile agent behavior, identify bottlenecks, and drive optimization decisions.
  • Stay current on new developments in agentic systems and bring those learnings back to the products we build.

Qualifications

  • 5-8 years (post-BS/MS) of software engineering experience.
  • Proficiency in Python and experience working with LLM APIs and agent frameworks.
  • Experience with shipping user-facing products, either on the backend or full-stack.

Skills

Required:PythonLLM APIsAgent frameworksPrompt engineeringSoftware product shipping

Benefits

  • Benefits include, but not limited to: Comprehensive health, dental and vision coverage, retirement benefits (401k match up to 4%), and flexible PTO.
Last updated Aug 5, 2026. Interested? Apply on the company site.
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About Harvey

Professional Class AI

Harvey is a platform built to meet the standards of the world’s leading professional service firms.

AILegalLegal AILegal AnalysisLegal Document AnalysisLegal ResearchLegal Techsetter-30
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