Senior Underwriter - Marine

At Mission, we unite talented underwriters, smart infrastructure, and capital to launch and scale specialist MGAs. Our model gives brokers instant access to sharp, responsive underwriting teams who deliver tailored solutions without the red tape.

Seafarer Marine Insurance Limited is a specialist marine MGA establishing its presence in the UK and EU market. We are looking for a Senior Underwriter to join as a founding member of the UK team, working closely with the CEO to build and grow the Seafarer Marine proposition across the UK and European market. For the right candidate, this is an opportunity to become the primary market-facing representative of Seafarer Marine in the UK and EU.

• Private Medical Insurance via Bupa and access to JAAQ at Work a video platform designed to support your overall wellbeing
• Group Life Insurance 4 x annual salary
• Pension Scheme - salary sacrifice employer 5% contribution
• Global Travel Insurance
• 28 days annual leave and an additional day off for your birthday
• Company paid parental leave
• Discretionary bonus scheme
• Remote first

This is a senior, market-facing role. You will be responsible for establishing Seafarer's distribution network, underwriting a profitable book of yacht and marine hull business, and contributing directly to the commercial success and reputation of the business from launch. The ideal candidate will bring an established book of business, strong broker relationships, and the ambition to be the face of Seafarer Marine in the UK and EU market.

• Lead the establishment of Seafarer Marine Limited's presence in the UK and EU market, building the broker distribution network from the ground up.
• Proactively drive new business acquisition and retention of existing relationships, negotiating participation, pricing, and terms and conditions with brokers directly.
• Ideally bring an existing portfolio of marine hull business and broker relationships that can be transitioned to Seafarer Marine Limited, providing an immediate foundation for the UK book.
• Represent Seafarer Marine at broker meetings, marine industry events, and client engagements — acting as a credible and visible face of the business in the London Market.
• Build and maintain strong relationships with London Market wholesale brokers and their retail networks, expanding distribution beyond existing channels.
• Act as the primary market-facing representative of Seafarer Marine Limited in the UK and EU — building the brand, establishing the business's reputation, and taking ownership of its commercial performance.
• Underwrite new and renewal yacht and marine hull risks to meet top and bottom line targets, ensuring disciplined risk selection and pricing adequacy at all times.
• Conduct comprehensive risk assessments, applying specialist technical expertise to standard and complex submissions alike, including managing referrals within agreed authority.
• Monitor portfolio performance on an ongoing basis — analysing loss ratios, submission quality, and cycle trends — taking proactive steps to optimise the book.
• Proactively manage capacity across the portfolio, ensuring appropriate participation levels and terms are maintained.
• Maintain up-to-date market knowledge, including emerging risks, legal developments, and competitor activity across the UK and European marine market.

• Underwrite in line with the delegated authority framework, underwriting guidelines, and all regulatory requirements.
• Ensure consistent application of rating tools and pricing frameworks, maintaining accurate file records and a clear audit trail for all risks and transactions.
• Contribute to the development of robust UK and EU policy…