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Marsh & McLennan

Brokers insurance and runs risk and HR consulting

Actuarial Intern

Summer 2027Updated on 10/22/2026
$33.75 - $40/hr
Internship
Bachelor's
Boston, MA, USA+12 moreMore locations: Seattle, WA, USA | Houston, TX, USA | Washington, DC, USA | San Francisco, CA, USA | Los Angeles, CA, USA | Philadelphia, PA, USA | Chicago, IL, USA | Charlotte, NC, USA | Milwaukee, WI, USA | Hartford, CT, USA | New York, NY, USA | Atlanta, GA, USA
HybridHybrid role; colleagues are expected in the local office or onsite with clients at least three days per week.
InsuranceActuarial & Risk Modelling
No H1B Sponsorship

About the job

Requirements
  • Candidates must be in the Class of 2028 or 2029.
  • Candidates must be pursuing a degree in Actuarial Science, Mathematics, Statistics, or a related field.
  • Candidates should have an interest in the corresponding Casualty Actuarial Society track.
  • Candidates should have strong analytical and quantitative skills.
  • Candidates should have strong written and verbal communication skills.
  • Candidates should be able to manage multiple priorities in a fast-paced environment.
  • Candidates should be collaborative and able to work independently.
  • Candidates should have Excel skills and familiarity with R, Python, SQL, SAS, or VBA.
  • Candidates must have permanent, unrestricted U.S. work authorization; CPT and OPT are considered restricted forms of work authorization.
Responsibilities
  • Support actuarial analyses related to reserving, pricing, loss forecasting, and risk financing programs.
  • Compile, organize, and analyze data to develop exhibits and summarize key findings.
  • Assist with industry research, benchmarking studies, and business intelligence initiatives.
  • Collaborate with consultants and actuaries to develop client-ready analyses and deliverables.

About the company

Marsh & McLennan Companies, which operates under the Marsh brand, is an insurance broker and consulting group serving businesses, governments and institutions worldwide. Its Marsh Risk unit arranges property, casualty, cyber and employee-benefit coverage, while Guy Carpenter places reinsurance for insurers. Mercer advises employers on pay, benefits, retirement and investments, and Oliver Wyman, Lippincott and NERA handle strategy, brand and economic consulting. Brokers earn commissions and fees from placing coverage, and consultants bill client fees or charge fees based on assets or plan members. The company traces its roots to 1871 and is headquartered in New York City.

Company Size

10,001+

Company Stage

N/A

Total Funding

N/A

Headquarters

New York, NY

Founded

1871

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Simplify Jobs

Simplify's Take

What believers are saying

  • Consulting drives growth: Mercer and Oliver Wyman's group grew 8% organically in the June 2026 quarter, versus 3% for broking.
  • Profits cushion jobs: Marsh kept about 27 cents of operating profit per sales dollar in 2025, before one-time costs.
  • Many career paths under one employer: 95,000+ colleagues span broking, reinsurance, benefits and strategy consulting in 130 countries.

What critics are saying

  • Expect cuts: Thrive, announced October 2025, sets aside $500 million, mostly severance and technology, to save $400 million yearly.
  • Pricing works against broking: Marsh's index shows commercial rates fell 6% in the June 2026 quarter, an eighth straight drop.
  • Back-office roles are being consolidated: a Business and Client Services unit is pooling operations and technology teams company-wide.

What makes Marsh & McLennan unique

  • Consulting is a third of the business: Mercer and the Oliver Wyman group earned 36% of 2025 revenue.
  • Investment management sets it apart: Mercer is the world's largest outsourced chief investment office, running portfolios for institutions.
  • Scale sets it apart: 2025 revenue grew 10% to $27.0 billion across broking, reinsurance and consulting.

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