Senior Reinsurance Technician (XOL)

GB035 Mercer (UK) Limited

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Witham - Newland Until 8/23/2026 H-1B sponsor history First posted April 16, 2026 Last posted April 16, 2026
Job description

Company:

Guy Carpenter

Description:

Senior Reinsurance Technician (XOL)

We are seeking an experienced individual to join our Client Services Support team at Guy Carpenter. This role will be based in Witham. This is a hybrid role that has a requirement of working at least three days a week in the office.

As a Senior XOL Technician, you will support our client base through transactional processing, securing reinsurance recoveries through timely and accurate system entry.

For this role, you will need to have proven Reinsurance experience, specifically within Excess of Loss

We will count on you to:

  • Manage an assigned client portfolio, taking full responsibility of technical duties relating to client accounts, premiums and claims

  • Work with Market Fiduciary to assist with collection of funds

  • Manage all XOL post, brokerage receivables, funding, retention, e-trading, ad hoc reporting requests, and all transactional process steps

  • Promote, build and maintain relationships with Brokers, Clients and Markets

  • Participate in training sessions, and provide input within the team and/or department for all aspects of reinsurance service processing to assist with troubleshooting

What you need to have: 

  • Insurance/Reinsurance Premium/Claims experience, ie; handling cash loss/large loss and a desire to move into the Reinsurance sector.

  • Competent Excel skills and proficiency in Microsoft Office Applications.

  • Willingness to learn and develop knowledge of technical account structure.

  • Successful management of workload; with an ability to manage expectations.

What makes you stand out:

  • Reinsurance Claims experience

  • Experience within Excess of Loss (XOL)

  • Experience of working in a technical capacity for a Broker

  • Experience of using London Market systems such as LORS and the IMR (Insurance Market Repository)

  • Knowledge of CLASS system is useful for review of London market queries

  • Knowledge of Letters Of Credit and the Citibank process

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.

#Hybrid

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 $27 billion and more than 95,000 colleagues, Marsh helps build the confidence to thrive through the power of perspective. For more information about Guy Carpenter, visit guycarp.com, or follow us on LinkedIn 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 [email protected].

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.

About this role

Summary

Support client portfolios, manage transactional processing, and foster reinsurance relationships.

Job title

Senior Reinsurance Technician (XOL)

Experience level

proven reinsurance experience

Industry

reinsurance

Location requirements

On-site in Witham, with hybrid remote options allowed.

Salary

Not specified

Visa sponsorship

H-1B sponsor history

Management role

No

Skills & keywords

Required skills

excelmicrosoft officeinsurance/reinsurance premium claims

Preferred skills

reinsurance claimsexcess of losslondon market systemsLORSIMRCLASS systemletters of creditcitibank

Specializations

reinsuranceexcess of lossclient servicestransaction processingclaims
Locations

Structured locations inferred from the posting.

Witham CM8, UK

Hybrid City