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Posted 07 August, 2026

Underwriting Assistant - Casualty

Atrium
London, ENG, GB Full Time

Job Description

About Atrium

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In a world of constant change, you need an insurer who has stood the test of time. Our reputation is built on consistency, expertise, and a client-first approach.

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We manage Syndicate 609, one of the oldest syndicates at Lloyd’s, and Syndicate 2026 which launched at 1/1. With a proud history going back to the 1930s our longevity reflects the strength of our underwriting discipline, the depth of our relationships, and our ability to adapt to the evolving needs of our clients and the wider insurance marketplace.

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We’re all in it together at Atrium

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We are committed to creating an environment where people learn, grow, and follow what they’re passionate about. Our culture encourages staff to feel confident in making decisions at any stage of their career and do work that makes them proud, knowing they’re playing a valuable role in shaping the success of the business.

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Click here to find out more--> About Us

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Role

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This is a great entry-level role, ideally for a school leaver, who is looking to start their career in the Lloyd's market. You will provide underwriting support and assistance to the underwriters and to create and maintain syndicate records.

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Description

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Underwriter Support

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  • Assisting underwriters with their underwriting at the box in Lloyd’s, in the office or on Teams
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  • Pre-underwriting risk data analysis•Creation and monitoring of the underwriting reports
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  • Mapping of data and assisting with model development
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  • Assisting with all online trading platforms
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  • Income and performance monitoring on large accounts
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  • Liaising with brokers and clients as necessary on live risks and quotes
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Underwriting Records

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  • Managing risk records
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  • Entry of risk data into underwriting system
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  • Managing underwriter workflows
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  • Responsibility for pre and post bind contract quality assurance
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  • Entry of aggregate data onto the appropriate systems
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  • Management of filing and data storage
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  • Managing credit control
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  • Creation and monitoring of renewal list report
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  • Slip copying and scanning
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  • Ad hoc jobs as required
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Required knowledge and skills

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  • A proven interest in a career in insurance and underwriting.
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  • An understanding of Lloyd’s and the insurance market, industry and people.
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  • Excellent attention to detail and the ability to work independently
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  • An interest in undertaking the CII exams
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  • IT skills (Word, Excel and other software packages used within the business)
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Atrium offers all permanent employees the chance to work flexibly through our charter for flexible working - we actively invite applications from candidates requiring any form of flexible working arrangements.

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Atrium is an Equal Opportunities employer with a strong and passionate commitment to Diversity, Equity, and Inclusion. Atrium actively invites applications from candidates requiring any form of flexible working arrangements.

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We do not discriminate based upon age, disability, gender reassignment, marriage and civil partnership, pregnancy and maternity, race, religion or belief, sex, sexual orientation, or any other applicable legally protected characteristic.

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We’re committed to providing reasonable adjustments or accommodations for applicants, so if you need assistance or support during the recruitment process, please get in touch.