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Simpson Thacher & Bartlett LLP
Simpson Thacher & Bartlett LLP
1,001 – 5,000 Employees
H1B Visa SponsorConsultingFinanceLegal
Simpson Thacher & Bartlett LLP is an international law firm advising businesses and institutions on complex legal and commercial matters. Its practice spans litigation, banking and credit, capital markets, mergers and acquisitions, real estate, private funds, and related regulatory work. Founded in 1884, the firm serves clients through offices in major global business centers, with notable experience across financial services, private equity, and infrastructure.
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Senior Artificial Intelligence Lawyer, M&A — New York City Hybrid

Senior AI lawyer developing and deploying production workflows for Simpson Thacher’s M&A practice. Converts legal reasoning into reliable AI solutions while helping attorneys adopt and use them effectively.

USUnited StatesNYNew York
$300,000 – $350,000 / year
HybridFull-timeSeniorEnglish RequiredArtificial Intelligence

Description

  • Own the hands-on design, development, and deployment of AI workflows for the M&A practice
  • Adapt models to M&A knowledge and create reusable workflow solutions
  • Use Harvey, Legora, DeepJudge, Claude Cowork, and Claude Code to build, validate, improve, and release production-ready AI tools
  • Partner with Engineering, Data Science, KM Lawyers, Practice Solutions, and M&A leaders
  • Create strategies that support lasting AI adoption across the M&A practice
  • Find valuable AI applications spanning deal screening, due diligence, signing, and closing
  • Assess workflows against legal first principles and improve prompts and workflow logic
  • Create datasets, test sets, and evaluation methods for proofs of concept, pilots, and continued development
  • Manage AI resources such as prompts, prompt libraries, workflows, vaults, and document collections
  • Develop and lead AI training, workshops, and practical guidance for M&A lawyers
  • Provide guidance on confidentiality, privilege, data privacy, output reliability, and professional responsibility
  • Distribute effective use cases and working practices across practice groups
  • Assess emerging AI tools through demonstrations, proofs of concept, and pilot programs
  • Track developments in AI, legal technology, and M&A to uncover opportunities for process improvement

Requirements

  • J.D. or equivalent legal qualification
  • Eight to ten years of experience practicing mergers and acquisitions law
  • Extensive knowledge of M&A transactions, due diligence, and related legal documentation
  • Substantial legal technology or AI experience, including familiarity with Harvey, Legora, Claude Cowork, Claude Code, or comparable platforms
  • Proven ability to build and deliver AI workflows from conception through production
  • Ability to translate M&A legal judgment, due diligence analysis, and transaction-document review into structured, executable AI logic
  • Exceptional written and spoken communication skills
  • Experience partnering across Engineering, Data Science, KM Lawyers, and practice groups
  • Strong project management, organization, and analytical capabilities, with close attention to detail
  • A proactive, driven approach and willingness to champion AI adoption and lead change
  • Ability to teach, coach, and mentor lawyers in AI tools and workflows
  • Strong service orientation and responsiveness
  • Must not require employer sponsorship for a work visa

Benefits

  • Exempt position not eligible for overtime pay
  • The Firm prohibits discrimination and harassment based on protected statuses
  • Respectful, collegial workplace where every individual is treated with dignity

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