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Marsh & McLennan

Brokers insurance and runs risk and HR consulting

Data & Analytics Analyst Intern

InternshipUpdated on 10/24/2026
No salary listed
Master's
Amsterdam, Netherlands
HybridHybrid work; colleagues are expected in the local office or onsite with clients at least three days per week.
Data & AnalyticsData Science

About the job

Requirements
  • Applicants must be master's students in a quantitative discipline from a top academic program, such as Data Science, Mathematics, Natural Sciences, Statistics, Computer Science, or Engineering.
  • Applicants need a data-driven mindset, numerical proficiency, and the ability to explain sophisticated data science concepts clearly to clients and colleagues.
  • Applicants need programming skills in Python or R and an eagerness to extend their technology knowledge.
  • Applicants need a strong commitment to teamwork and resilience in a creative, changing environment.
  • Applicants need excellent verbal and written command of English.
Responsibilities
  • Collaborate with Oliver Wyman Data & Analytics colleagues and clients at all levels to help solve client challenges.
  • Design potential solutions for analytical challenges, implement prototypes, assess their effectiveness, and discuss ideas with clients and colleagues.
  • Contribute to client projects including developing an NLP-based machine learning toolkit to predict credit rating downgrades using news articles; modeling portfolio decarbonization strategies; optimizing and developing a promotional program using historical promotion data; validating a customer-facing generative AI chatbot; developing probability of default and loss models in Python; identifying supply chain risks from multiple live data feeds and applying an AI-based risk methodology; and developing a next-best-action model to reduce customer churn.
  • Travel internationally for project work.
Desired Qualifications
  • Fluency in Dutch is a plus.

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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