Commercial Business Analyst

Are you interested in working within a highly skilled team that specialises in delivering analytical insights and data-driven solutions for major reinsurance clients? Do you have a technical acumen and excellent organisation skills? If so, we are currently looking to expand our team and are interested in speaking with top talent.

We are seeking a talented individual to join our Analytics team at Guy Carpenter
. This role will be based in London
. It is a hybrid role that requires working at least three days a week in the office.

• Prepare and structure Excess of Loss property retro layers using in-house systems.
• Calculate pricing metrics and produce analytical outputs for renewals.
• Present data insights to brokers and clients in meetings.

• Support 8–9 major client accounts during peak periods (e.g., 1/1 renewals).
• Work on large retrocession accounts valued between $1 million and $5 million.
• Participate in RFP presentations and client strategy sessions.

• Design and build self-service analytical tools for benchmarking and insights.
• Utilise Excel, Python, SQL, and Power BI to create dashboards and reporting solutions.
• Collaborate with data engineering colleagues to deliver robust solutions.

• Coordinate production of biannual market reports, ensuring data accuracy and validation.
• Manage input from junior team members and oversee quality control.

• Strong analytical and programming skills (Python, SQL, Power BI).
• Ability to translate complex data into clear, actionable insights.
• Excellent communication skills for client-facing presentations.
• Self-starter with an entrepreneurial mindset; comfortable in an unstructured environment.
• Background in Mathematics, Computer Science, or similar quantitative discipline.
• Insurance/reinsurance experience is beneficial but not essential.

• Previous Insurance/reinsurance experience.

• 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.

At Guy Carpenter, a Marsh business, you can be your best. We work on challenges that matter with colleagues who help bring out our best. Our uniquely collaborative environment will empower you to focus on your personal and professional success, learning from top specialists in the (re) insurance industry and leading you towards a rewarding and impactful career.

Guy Carpenter is a business of Marsh (NYSE: MRSH), a global leader in risk, reinsurance and capital, people and investments, and management consulting, advising clients in 130 countries. With annual revenue of over $24 billion and more than 90,000 colleagues, Marsh helps build the confidence to thrive through the power of perspective. For more information about Guy Carpenter, visit , or follow us on Linked In and X.

Marsh is committed to embracing a diverse, inclusive and flexible work environment. We aim to attract and retain the best people and embrace diversity of age background, civil partnership status, disability, ethnic origin, family duties, gender orientation or expression, gender reassignment, marital status, nationality, parental status, personal or social status, political affiliation, race, religion and beliefs, sex/gender, sexual orientation or expression, skin color, or any other characteristic protected by applicable law.

We are an equal opportunities employer. We are committed to providing reasonable adjustments in accordance with applicable law to any candidate with a disability to allow them to fully participate in the recruitment process. If you have a disability that may require reasonable adjustments, please contact us at rea

Marsh is committed to hybrid work, which includes the flexibility of working remotely and the collaboration, connections and professional development benefits of working together in the office. All Marsh colleagues are expected to be in their local office or working onsite with clients at least three days per week. Office-based teams will identify at least one “anchor day” per week on which their full team will be together in person.