Full-Time
Client Development Manager
Mergers & Acquisitions
Updated on 9/3/2026
Simpson Thacher & Bartlett
1,001-5,000 employees
International law firm delivering transactional services
Compensation Overview
$180k - $220k/yr
No H1B Sponsorship
Boston, MA, USA + 2 more
More locations: Washington, DC, USA | New York, NY, USA
Hybrid
Hybrid work is required in the selected office location.
Bachelor's, JD
 Growth & Marketing (1) |
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- A bachelor's degree.
- A minimum of five years of relevant experience managing teams and complex projects.
- Experience cultivating and managing client relationships.
- Proficiency in Microsoft Office Suite and web-based research.
- Ability to interact well and build professional relationships while maintaining a high level of customer service, diplomacy and discretion.
- Exceptional written and verbal communication skills.
- Excellent research and analytical abilities.
- Ability to assess needs, assign priorities, develop strategies and make recommendations when presented with ambiguous or incomplete information.
- Strong problem-solving and analytical skills to make sound decisions, escalating as appropriate.
- Demonstrated proficiency in project management and organizational skills.
- Ability to collaborate across teams and effectively share knowledge and resources with appropriate parties, both internally and externally.
- Ability to anticipate business challenges of Partners and senior team members and proactively address needs with self-assuredness and business acumen.
- Flexibility and willingness to work additional hours as needed.
- Collaborate with the Client Development & Engagement team and Partners in implementing business development strategies and action plans for the Mergers & Acquisitions practice and select industry groups.
- Support Partners and other firm administrative departments with presentation development, pitches and responses to requests for proposals for new business, internal presentations, and varied practice management duties.
- Collaborate with senior Client Development & Engagement team members and the Communications team to support profile-raising and public relations and communications initiatives, including speaking engagements, business association networking, writing opportunities, and media events.
- Liaise with Client Development & Engagement team members and Partners to develop and maintain up-to-date practice descriptions, capability statements, engagement lists, and other business development materials.
- Assist with and oversee competitive intelligence, industry and market trends and research, and analysis of clients and potential clients.
- Prepare and oversee directory submissions and survey responses for various legal and business directories and publications.
- Manage and oversee client events independently or collaboratively, including program development, participant coordination, and logistics.
- Work with Client Development & Engagement team members to accurately maintain the Firm's engagement database and deals and case experience across all channels, as well as other operations and systems.
- Manage junior team members; participate in onboarding and training junior team members; project manage and review various workstreams; mentor junior team members and help set goals and professional milestones.
- Perform and manage projects, other duties, and initiatives as assigned, including dedicated support for the Firm's client teams initiative and other priority client initiatives.
- A major in Marketing, English, Communications, Advertising or a related field.
- A Juris Doctor degree.
- Three years as a practicing lawyer in a mergers and acquisitions-related role.
- Prior experience in marketing and business development at a law firm.
- Familiarity with experience management databases such as Content Pilot or Foundation.
- Experience with website maintenance or client relationship management systems.
Simpson Thacher & Bartlett is a large, long-established international law firm with about 1,500 lawyers. It helps clients worldwide by providing coordinated legal advice and transactional capabilities across multiple practice areas, drawing on offices in major financial and business centers (New York, London, Hong Kong, Tokyo, Beijing, São Paulo, etc.). The firm works through a network of attorneys to handle complex transactional work, mergers and acquisitions, financing, litigation, and other corporate matters for clients globally. Its differentiator is its global reach, depth of experience, and long history dating back to 1884, enabling it to offer coordinated, cross-border legal services at scale. The firm’s stated goal is to deliver high-quality legal services to clients around the world, leveraging its international platform and experienced lawyers to meet diverse legal needs.
Company Size
1,001-5,000
Company Stage
N/A
Total Funding
N/A
Headquarters
New York City, New York
Founded
1884
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Simplify's Take
What believers are saying
- August 2026 Chicago launch added five partners from middle-market PE and family office.
- April 2026 Singapore opening deepens Asia sponsor coverage with Ho, King, Heng, and Wong.
- June 2026 Chambers USA delivered over 90 rankings, reinforcing premium pricing and recruiting power.
What critics are saying
- Paul Weiss hired Simpson partner Paul Foote in January 2026, exposing London retention pressure.
- Rapid Chicago, Singapore, and Dallas expansion risks integration drag and margin dilution through 2027.
- Kirkland and Paul Weiss can poach rainmakers faster than Simpson replaces sponsor-facing leaders.
What makes Simpson Thacher & Bartlett unique
- Band 1 global private equity fund formation since 2008, plus $10B+ fund counsel depth.
- Infralogic ranked Simpson Thacher #1 in Q2 2026 energy and infrastructure by deal value.
- Chambers 2026 gave 43 Band 1 or 2 rankings across corporate, finance, and disputes.
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Benefits
Hybrid Work Options
Professional Development Budget
Company News
Simpson Thacher named a 2027 "international elite" Firm by Latin Lawyer. Latin Lawyer has recognized Simpson Thacher as an "International Elite" firm in its Latin Lawyer 250 2027 edition - an "authoritative guide to leading business law firms across Latin America, as well as international firms active in the region." Latin Lawyer reported that Simpson Thacher "has advised the most sophisticated and respected Latin American investors, conglomerates and corporations, global banks, private equity groups and national governments on flagship transactions throughout the region." The Firm was ranked as elite for its services across these seven practice areas: * Anti-Corruption Investigations and Compliance * Banking & Finance * Capital Markets * Corporate and M&A * Litigation * Private Equity * Pro Bono To view the full profile, please click here (subscription required). Related insights. Related services.
Simpson Thacher adds prominent funds Partner. Simpson Thacher & Bartlett LLP today announced that Stephanie Epstein Srulowitz will join as a Partner in the Investment Funds Practice, strengthening the Firm's market-leading fund formation and fundraising team. "Stephanie is one of the most sought-after fund formation attorneys in the world, and she will immediately have a central role in setting the strategic direction for the Firm's Investment Funds and related practices, and in driving their continued growth and development," said Jonathan Karen, Co-Head of Simpson Thacher's Investment Funds Practice. "Stephanie's commercial judgment and complementary experience meaningfully amplifies our Investment Funds Practice and our longstanding leadership in fund formation and fundraising," added Barrie Covit, Co-Head of Simpson Thacher's Investment Funds Practice. "Simpson Thacher's Investment Funds team is known not only for the scale and sophistication of its platform, but for the holistic, solutions-oriented counsel it provides to sponsors on their most important matters," said Stephanie. "That approach aligns perfectly with how I work with clients, and I am excited to join a team that is shaping the next evolution of fund formation and fundraising." Stephanie brings more than two decades of experience representing private investment fund sponsors in connection with the formation, structuring and negotiation of their investment funds, as well as in secondaries transactions, carried interest arrangements, governance structuring and fundraising-related matters. Stephanie is widely recognized as a leading fund formation lawyer, with accolades across Chambers, Law360, The Legal 500, IFLR1000 and others. Simpson Thacher's Investment Funds Practice has advised leading asset managers and private fund sponsors for more than 40 years across fund formation, fundraising, regulatory, governance, strategic transactions, financings and secondaries matters. The Practice is ranked Band 1 globally for Investment Funds: Private Equity: Fund Formation by Chambers, a distinction it has held every year since 2008, and the Firm has served as fund counsel to more $10+ billion private equity funds than any other law firm. Related insights. Related services. Related Practice areas. Related industries.
Simpson Thacher strengthens Energy and Infrastructure Practice with Partner in Washington, D.C. Simpson Thacher & Bartlett LLP today announced that Erik Elsea has joined the Firm as a Partner in the Energy and Infrastructure Practice, based in Washington, D.C. "Our continued investment in the growth of our market-leading Energy and Infrastructure Practice reflects the opportunities we see across the sector, and Erik's more than 25 years of experience advising on significant energy and infrastructure transactions makes him an exceptional addition to our team," said Eli Hunt, Co-Head of the Firm's Energy and Infrastructure Practice. "Since 2019, we have tripled the size of our Energy and Infrastructure group, a trajectory that reflects the surging client demand we are seeing across all asset classes," said Breen Haire, Co-Head of the Firm's Energy and Infrastructure Practice. "Erik's arrival furthers that momentum and adds additional depth to our market-leading M&A capabilities in the sector. We are thrilled to welcome him to Simpson Thacher." Erik focuses his practice on mergers and acquisitions, securities law and general corporate matters across the power and energy sector, with a particular focus on conventional power, renewable energy and related infrastructure assets, as well as oil and gas. He represents buyers, sellers and financial advisors in a wide range of U.S. and cross-border transactions, including public and private acquisitions and divestitures, take-privates, minority stake investments and joint ventures. "Simpson Thacher's energy and infrastructure platform is exceptional - deeply commercial, highly collaborative and operating at the top of the market," said Erik. "It is the ideal place to advise clients on their most complex and consequential transactions, and I am thrilled to join a team with such extraordinary momentum." Ranked #1 in all energy and infrastructure transactions for Q2 2026 (Infralogic, by deal value), Simpson Thacher is a market leader in the space, with a global Energy and Infrastructure Practice of more than 150 dedicated lawyers offering unparalleled market coverage. The Firm has represented parties on all sides of historic and innovative energy and infrastructure transactions, supporting its clients throughout the lifecycle of a business - from formation and corporate structuring to project and asset development, financing and acquisition and exit. Team and contacts. Related insights. Related services. Related practice areas.
Simpson Thacher adds Energy and Infrastructure M&A Partner in London. Simpson Thacher & Bartlett LLP today announced that Murray Cox will join the Firm's London office as a Partner in the Energy and Infrastructure Practice. "Infrastructure as an asset class continues to show strong momentum, with capital concentrating on the largest platforms and digital infrastructure and energy-related investment dominating activity, which plays to the strength of our practice," said Amy Mahon, Co-Head of Simpson Thacher's Energy and Infrastructure Practice. "Murray's impressive M&A practice, which incorporates complex transactions across a range of infrastructure sectors, will further strengthen our ability to support clients on their most complex and significant mandates." Murray advises financial sponsors, listed companies and other institutional investors on cross-border M&A, U.K. and European take-privates, infrastructure investments, corporate governance, ESG and corporate finance matters. He joins from Weil Gotshal. "Murray brings a distinctive cross-border M&A practice backed up by deep sector knowledge and experience that aligns closely with the opportunities we see in Europe's rapidly evolving energy and infrastructure landscape," said European Managing Partner Wheatly MacNamara. "He will strengthen our capabilities for clients pursuing transformative transactions across the region. We welcome Murray to the Firm." His arrival follows the hire of energy transition Partner Eleanor Milne, who joined the Firm's London office in 2025, and Energy and Infrastructure Partner David McKendrick, who joined earlier this year. Simpson Thacher's Energy and Infrastructure Practice advises a broad range of clients, including funds and corporates, through all stages of the investment cycle within the energy and infrastructure sector. Related insights. Related services. Related practice areas.
Simpson Thacher recognized by Chambers as a leading law Firm in Latin America. Simpson Thacher has once again been recognized as one of the leading law firms in the Chambers Latin America 2027 (ex-Brazil) guide. The Firm earned top rankings in the International Counsel category for Capital Markets, Corporate/M&A and Banking & Finance, including Band 1 rankings in both Capital Markets and Corporate/M&A. The Firm has also been recognized in the Chambers Brazil guide as International Counsel for Capital Markets and Corporate M&A. In addition, the following attorneys are recognized by Chambers across these guides in their respective fields of practice: * Grenfel S Calheiros - Capital Markets and Corporate/M&A * Juan Francisco Méndez - Banking & Finance, Capital Markets and Corporate/M&A * S Todd Crider - Capital Markets and Corporate/M&A * Christian Albanesi - International Arbitration: Arbitrators and International Arbitration * Juan M Naveira - Capital Markets and Corporate/M&A * Gabriel Silva - Corporate/M&A * Paulo Fernando de Menezes Cardoso - Capital Markets and Corporate/M&A * Kirsten Davis - Capital Markets Team and contacts. Related insights. Related services. Related practice areas.