Head of Proportional Treaty Underwriting

Location: London, United Kingdom or Paris France

The Opportunity

An exciting opportunity has arisen to join a fast-growing international reinsurance platform as it continues to expand its presence in the London Market.

This is a rare chance to take on a genuine leadership role with significant autonomy, helping to build and shape a profitable proportional treaty portfolio from the ground up. You’ll play a pivotal role in establishing the underwriting strategy, developing key broker relationships and contributing to the long-term growth of a dynamic international business.

If you’re looking for a position where you can make a tangible commercial impact rather than simply manage an existing portfolio, this could be the ideal next step.

Key Responsibilities

• Develop, underwrite and manage a profitable portfolio of proportional treaty business across a broad range of Personal Lines, Commercial and Specialty classes (excluding Motor and Health).
• Build and strengthen long-term relationships with London Market brokers, cedants and key market stakeholders.
• Analyse treaty submissions, assess portfolio performance and make commercially sound underwriting decisions.
• Negotiate treaty structures, pricing, commissions and contractual terms.
• Monitor portfolio profitability and recommend underwriting actions where appropriate.
• Collaborate closely with Actuarial, Finance and Risk teams to ensure robust portfolio management and reporting.
• Contribute to underwriting strategy, market expansion and long-term business growth.

About You

• 8+ years’ experience underwriting proportional treaty reinsurance within a reinsurer, Lloyd’s syndicate or international insurance group.
• Strong technical knowledge across multiple treaty classes, including Property, Casualty, Marine, Travel, Financial Lines or other Specialty business.
• Demonstrable experience developing and managing profitable treaty portfolios.
• Established broker relationships within the London Market and the ability to generate new business opportunities.
• Strong analytical skills with experience assessing pricing adequacy, portfolio performance and underwriting profitability.
• Excellent stakeholder management and negotiation skills.
• Entrepreneurial mindset with the ability to work independently while contributing to a collaborative international team.

What’s on Offer

• A unique opportunity to join an ambitious organisation during an exciting phase of international expansion.
• Significant autonomy and the opportunity to influence underwriting strategy from day one.
• Exposure to senior leadership and the ability to make a visible commercial impact.
• Competitive salary, performance-related bonus and long-term career progression.
• Collaborative international environment with excellent opportunities for professional development.

If you’re an experienced Treaty Underwriter looking for an opportunity to build something meaningful within an entrepreneurial and internationally backed platform, I’d be delighted to discuss this opportunity with you in complete confidence.