Marsh McLennan

Senior Lead M&A Consultant

Marsh McLennan$169K — $338K *
Business Services
11 - 15 years of experience
Job Overview by Ladders

Qualifications

  • 12+ years of professional services experience with a focus on leading transactions.
  • Proven management consulting skills in structuring ambiguous problems and providing commercial recommendations under pressure.
  • Ability to engage executive-level clients, including CHROs and CFOs, with a history of being a trusted advisor for future transactions.
  • Working fluency with AI tools, capable of directing AI-enabled analysis while ensuring accuracy and data handling standards.
  • In-depth knowledge of the M&A lifecycle and HR disciplines like total rewards and workforce planning.
  • Experience with commercial ownership including proposal leadership and accountability for revenue.
  • Proven leadership in developing teams and the capability to adapt to a matrixed work environment.

Responsibilities

  • Orchestrate comprehensive client engagement across multiple business lines to provide an integrated Marsh experience.
  • Develop client relationships to drive sales, with a focus on revenue responsibility and delivery quality.
  • Manage complex human capital agendas across various transaction types from inception to post-close integration.
  • Translate critical people-related questions into actionable plans that withstand scrutiny by senior stakeholders.
  • Provide strategic advice on human capital value drivers, ensuring effective management of transaction risks and timelines.
  • Leverage AI tools to enhance diligence processes and create efficiencies in the delivery of consulting projects.
  • Mentor and develop consulting teams, fostering new ways of working and leveraging AI in service delivery.

Benefits

  • Professional development opportunities and challenging work.
  • A vibrant and inclusive culture that encourages innovation and collaboration.
  • Competitive total rewards package including health benefits, tuition assistance, and retirement programs.
Full Job Description
Description:

We are seeking a talented individual to join our HR M&A Advisory Services team, part of our People and Investments business at Marsh. This role is based in New York City or Chicago. This is a hybrid role that has a requirement of working at least three days a week in the office or on site with clients.

The Senior Principal is a leader in Marsh's HR M&A Advisory Services practice, accountable for the human capital agenda on the transactions that matter most to our corporate and private equity clients. This is a management consulting role in which you will frame the people questions that determine whether a deal delivers its thesis, advise senior business leaders including deal principals, C-Suite, CHROs, and business unit leaders at transaction pace, and lead teams across Marsh's business lines from diligence through Day 1 and post-close integration/separation. AI is central to how this role works, both in how the work gets done and in how the next generation of M&A consultants is developed.

We will count on you to:
  • Orchestrate sales and delivery across Marsh People and Investments' Health and Benefits, Investments and Retirement, Workforce and Rewards, and Global Benefits Management businesses and the broader Marsh enterprise, so the client receives one integrated experience when engaging with Marsh.
  • Originate and expand work through relationship development and growth with corporate development teams and private equity sponsors, holding accountability for revenue, margin and delivery quality. Lead the opportunity from identification through pursuit and close as a strategic advisor and relationship builder.
  • Own the human capital agenda on complex transactions end to end, across acquisitions, divestitures, carve-outs, joint ventures, and private equity platform and add-on deals.
  • Frame the people questions that determine whether a deal delivers its thesis, and translate them into a defensible value case, synergy plan and integration roadmap that holds up to board and investment committee scrutiny.
  • Advise senior business leaders, CHROs, CFOs and private equity deal teams and operating partners on transaction pace, providing a clear point of view on the critical human capital value drivers to ensure data, risks, timeline, and interdependencies are effectively managed.
  • Use AI as a core tool of the craft, accelerating data room review and document synthesis, modeling workforce cost and synergy scenarios, and converting repeatable diligence work into practice accelerators.
  • Develop colleagues in new ways of working by coaching teams on AI-enabled delivery, setting the standard for review and source verification, and being explicit about where deal materiality and client confidentiality require human judgment.
  • Shape the practice point of view on how transactions are changing, including deal structures, workforce composition and the regulatory environment, and take that view to market.
  • Lead and develop consultants and engagement managers, building the bench strength that determines how much work the practice can take on.
  • Thrive and be motivated by an environment that embraces AI and technology-enabled tools.

What you need to have:
  • 12+ years of professional services experience with a track record of leading transactions rather than supporting them.
  • Demonstrated management consulting capability, including structuring ambiguous problems, working hypothesis-first, and reaching defensible recommendations under commercial and deal-timeline pressure.
  • Executive presence with business leadership including, CHRO, CFO and private equity audiences, with a record of being retained for the next transaction.
  • Working fluency with AI in delivery, meaning direct experience directing AI-enabled analysis and holding teams to a standard of accuracy, source verification and appropriate handling of client data.
  • Working knowledge of the M&A lifecycle and of core HR disciplines across total rewards, benefits, HR technology and workforce planning, sufficient to lead the work and challenge the specialists doing it.
  • Commercial ownership, including origination, proposal leadership and accountability for revenue, margin and delivery quality.
  • Proven ability to build, lead and develop teams in a matrixed environment; willingness to travel as deal activity requires.

What makes you stand out?
  • Track record of building strong relationships with senior leaders to drive sales and expansion opportunities.
  • Hands-on building with AI tools, including prompting, scripting or constructing agentic workflows, rather than only using AI-enabled products.
  • Depth in one or more transaction-critical HR disciplines, such as pension and post-retirement obligations, equity and change-in-control exposure, benefit plan design, or workforce cost modeling.
  • Experience across both corporate and private equity clients, including platform, add-on and sponsor-to-sponsor dynamics.
  • Cross-border transaction experience, including works councils, TUPE, collective bargaining agreements and multi-jurisdiction separation.
  • Carve-out and separation depth, including transition service agreements, standalone cost build-up and Day 1 readiness.
  • Fluency with HRIS and people data (Workday, SuccessFactors or equivalent), and with how workforce data is assembled into decision-ready analysis on a deal clock.
  • Relevant professional certifications such as CCP, GRP, CEBS, PROSCI or PMP.
  • MBA or other advanced degree.

Why join our team:
  • We help you be your best through professional development opportunities, interesting work and supportive leaders.
  • We foster a vibrant and inclusive culture where you can work with talented colleagues to create new solutions and have impact for colleagues, clients and communities.
  • Our scale enables us to provide a range of career opportunities, as well as benefits and rewards to enhance your well-being.


The applicable base salary range for this role is $169,000 to $338,500.

The base pay offered will be determined on factors such as experience, skills, training, location, certifications, education, and any applicable minimum wage requirements. Decisions will be determined on a case-by-case basis. In addition to the base salary, this position may be eligible for performance-based incentives.

We are excited to offer a competitive total rewards package which includes health and welfare benefits, tuition assistance, 401K savings and other retirement programs as well as employee assistance programs.

About Marsh McLennan

Marsh McLennan Careers

Join the exceptional team at Marsh McLennan, a global leader in professional services, offering unparalleled job opportunities in insurance, risk management, and consultancy. As the company propels forward, it invites dedicated professionals to contribute to a culture of innovation, leadership, and growth.

Work You’ll Do

At Marsh McLennan, you will engage with complex challenges that push the boundaries of your skills and knowledge. Our team thrives on diversity and the shared goal of delivering impactful solutions to our clients worldwide. By joining us, you will be part of a culture that values diversity training and leadership development, ensuring every team member is equipped for success.

Explore Professional Growth

Marsh McLennan is committed to the professional growth of its employees. Whether you are seeking a position that offers a path to leadership or looking for robust internship programs to kickstart your career, Marsh McLennan provides the resources and global platform to propel your ambitions into achievements. Our benefits package is designed to support the well-being and continuous professional development of all staff, from entry-level to senior leadership roles.

Innovative Work Environment

Our company is at the forefront of industry innovation. The collaboration between experienced professionals and fresh talent generates dynamic solutions that keep Marsh McLennan at the cutting edge of the industry. Our team is encouraged to lead with creativity and embrace new ideas, driving the company’s legacy of pioneering industry-first solutions.

Join Our Team

Marsh McLennan is hiring! Explore the multitude of job opportunities on our careers page, from strategic advisory roles to operational excellence positions. We look for passionate, curious, and solution-driven team players. Enhance your career with Marsh McLennan, where your skills will be honed through challenging projects and high-impact strategies.

Networking and Career Advancement

Networking at Marsh McLennan opens doors to enriching connections and countless opportunities within the industry. Our professionals benefit from an environment that fosters networking through events, professional groups, and collaborative projects. With Marsh McLennan, career advancement is not just a possibility—it is an expectation.

Prepare for Your Interview

Ready to apply? Make sure your resume highlights your most relevant experiences and skills tailored to the position you are applying for. Our interview process is designed to understand your capabilities and fit with our team’s goals and values. Prepare to discuss how your background, experiences, and professional aspirations align with the opportunities at Marsh McLennan.

Stay Connected

Keep up to date with the latest from Marsh McLennan: - **Career Insights**: Gain insider perspectives and industry-leading insights through our careers blog. - **Job Alert Emails**: Personalize your subscription to receive job alerts and the latest news tailored to your preferences. Discover the rewarding career opportunities awaiting at Marsh McLennan, where your professional journey is just the beginning. Join us in shaping a future defined by insight, integrity, and innovation.
Learn more about Marsh McLennan
Size
83,000 employees
Market Cap
$82.6 billion
Industry
Net Income
$2 billion
Founded
1914
5 Year Trend
+8.5%
Revenue
$17.2 billion
NASDAQ

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