Legal Product Builder

Carta•San Francisco, NY

About The Position

As a Legal Product Builder, you will sit at the cutting edge of building technology around the practice of law. You will build AI-powered legal products alongside engineers and product managers, bringing deep legal expertise into the product development process. This involves turning complex legal work into scalable, agent-driven experiences by translating legal judgment into systems, breaking down legal processes like contract review and compliance into decisions, rules, workflows, exceptions, and escalation points an AI agent needs to navigate. You will also teach our agents what "good" looks like by developing examples, evaluation criteria, test cases, and feedback loops that help our legal agents produce accurate, useful, and trustworthy work, and evaluate and improve agent performance by testing against real-world scenarios, identifying where reasoning or outputs fall short, diagnosing failure modes, and partnering with engineers to improve them. Additionally, you will anticipate ambiguity, edge cases, conflicting information, and situations requiring human judgment, determining how our products should handle them, and prototype new legal capabilities using AI tools directly to experiment with prompts, workflows, and agent behavior, moving from an idea to a working prototype before or alongside engineering to shape what we build next.

Requirements

  • Lawyer with 4+ years of substantive training and experience (Big Law, in-house at an asset manager or PE firm, or comparable legal practice or within a legal-adjacent role)
  • Demonstrated track record of identifying where legal workflows break down and proposing (or actually building) something better
  • Comfortable sparring with engineers on how AI products are built and can translate legal judgment into something a technical team can act on
  • Strong written communicator with sharp judgment
  • Operate with a high degree of independence

Nice To Haves

  • Direct commercial contract negotiation experience (NDAs, subscription agreements, transaction docs)
  • Prior time at a legal tech company or in a hybrid legal/product role
  • Familiarity with contract automation, document intelligence, or negotiation tooling
  • Founder experience or having built something from scratch

Responsibilities

  • Build AI-powered legal products alongside engineers and product managers
  • Translate legal judgment into systems
  • Teach our agents what "good" looks like
  • Evaluate and improve agent performance
  • Prototype new legal capabilities

Benefits

  • Market competitive salary
  • Equity for all full-time roles
  • Exceptional benefits
  • Commissions plans (for applicable roles)
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