Underwriter, Excess Casualty

In good company.

Hamilton (NYSE: HG) underwrites specialty insurance and reinsurance risks on a global basis through its wholly owned subsidiaries. Its three underwriting platforms: Hamilton Global Specialty, Hamilton Select and Hamilton Re, each with dedicated and experienced leadership, provide access to diversified and profitable business around the world.

Headquartered in Bermuda, Hamilton has over 600 employees with key underwriting operations in London, Bermuda, the US and Dublin. We work collaboratively, we share a passion for the service and results we deliver, and we know that what we do each day is meaningful – to our customers and our business. We believe we are ‘In good company.’ with everyone we interact with.

We're looking for an

Underwriter, Excess Casualty

Reporting to the Head of Excess Casualty, this role will be working alongside our London and Dublin-based team to execute the class strategy and contribute to the delivery of the business plan by attracting and underwriting US Excess Casualty business. As an Underwriter, you will be expected to collaborate with the other Excess Casualty underwriters to efficiently and profitably manage a diverse portfolio of business.

Hamilton Global Specialty is our multi-platform, specialty insurer operating primarily through a Lloyd’s Syndicate and Dublin operating company with a managing general agency in the US.  Hamilton Re is our Bermuda insurer underwriting property, casualty and specialty insurance and reinsurance on a global basis.

What you will do

• Underwrite, quote and bind Excess Casualty (re)insurance in accordance with relevant authority guidelines and business plan


• Ensure consistent execution of the underwriting strategy


• Contribute to the delivery of the business plan


• Help with the monitoring of key portfolio metrics


• Seek out new business opportunities


• Continuous assessment of rating models


• Assist in the development of the Underwriting Assistant


• Act in accordance with all applicable Supervisory Bodies, principles, rules, and regulations

Conduct Standards

• You must act with integrity


• You must act with due skill, care and diligence


• You must be open and cooperative with the CBI, FCA, the PRA and other regulators


• You must pay due regard to the interests of customers and treat them fairly


• You must observe proper standards of market conduct


•  You must act to deliver good outcomes for retail customers

What you require for the role

• Demonstrable experience in US Excess Casualty


• Critical thinking and an analytical mind


• Strong negotiation skills


• Good communication skills and an ability to express ideas clearly with both internal and external stakeholders.


• Strong working knowledge of Microsoft Office (Predominantly Excel, but also Outlook, and Word)


• A proactive, customer focused approach and strong work ethic


• Proven ability to manage time, meet deadlines and prioritise efficiently


• Drive and ambition to develop and progress


• Open, innovative and inclusive mindset


• Collaborative spirit


• Results-oriented and growth mindset

What you can expect from us

At Hamilton, we offer a vibrant, entrepreneurial and collaborative workplace shaped by our values: Be Smart, Be Sensible, Be Open and Be More.

Our employees consistently say they would recommend Hamilton as a great place to work — a testament to the inclusive, supportive, and empowering culture we’ve built together. We embrace individuality, value diverse perspectives, and recognise the unique contribution each person makes to our continued success.