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River AI

API for fine-tuning open-weight models

Legal Counsel

Legal Counsel & Legal SupportConfirmed live in the last 24 hours
Full-timePalo Alto, CA, USA

About the Job

Requirements

  • A Juris Doctor from an accredited law school and active membership in the California bar, or eligibility to register as in-house counsel in California.
  • At least 6 years of combined experience at a top law firm and in-house at a high-growth technology company, with significant ownership of product, commercial, corporate, or other legal subject matter expertise.
  • Ability to act as the first point of contact on unfamiliar legal questions, form an informed view quickly, and recognize when to call in a specialist.
  • Strong drafting and negotiation skills, with judgment to provide concise, risk-calibrated, business-forward advice.
  • Discretion and sound judgment when handling sensitive matters and information.
  • Enthusiasm for technology and AI, fluency with modern software and AI tools, and the habit of using them to work more efficiently.
  • Ability to communicate clearly in writing and in person and make complex legal issues understandable to non-lawyers.
  • Ability to work full-time on-site in Palo Alto.
  • Ability to work at the pace required by a fast-paced startup.

Responsibilities

  • Serve as a primary legal advisor to the business, partnering directly with founders and leaders across engineering, research, product, people, and go-to-market, and support financing rounds.
  • Draft, negotiate, and close commercial agreements end-to-end, including compute and infrastructure, SaaS, licensing, vendor, partnership, and customer agreements; build templates and playbooks to support company growth.
  • Provide product counseling on AI and machine-learning offerings from design through launch, including terms of service, data licensing and provenance, open-weight model releases, privacy, and intellectual property strategy.
  • Advise on employment matters across the employee lifecycle, including offers, equity, contractor and employer-of-record arrangements, workplace policies, and sensitive investigations, in coordination with the People team.
  • Track and interpret federal, state, and international AI regulation and translate it into practical guidance and compliance programs.
  • Manage outside counsel efficiently, determine what to handle directly, and decide when and how to escalate.
  • Build the legal function by improving processes and AI tools and driving issues to resolution.

Desired Qualifications

  • Privacy or regulatory expertise, including CIPP/US or EU certifications, or experience negotiating directly with regulators around the world.
  • An engineering or science background.
  • Experience in healthcare and financial verticals.
  • Familiarity with equity management platforms such as Carta.
  • Experience with financing rounds.

About the Company

River AI

API for fine-tuning open-weight models

River AI helps developers and enterprises train, fine-tune, and own custom open-weight AI models using its River API, which focuses on open-weight models rather than a single lab-owned general model. The API supports LoRA fine-tuning and reinforcement learning on frontier open weights, featuring fast weight transfers, sampling-training consistency, elastic compute, and token-based billing that avoids idle GPU charges. It differentiates itself by enabling true ownership and control of models, offering a full-stack solution for training, fine-tuning, and deploying custom models without relying on a centralized general model. Its goal is to empower individuals and organizations to own, customize, and run their own AI systems with close-to-the-user control.

Company size
11-50
Company stage
Early VC
Total funding
$1.1B
Headquarters
Palo Alto, CA
Founded
2026

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