Senior Portfolio Actuary

Key Responsibilities

• Work with Underwriters to strategically design and manage net portfolios across Casualty and Financial Lines to ensure long-term, sustainable growth, effectively balancing risk and return through the cycle.
• Alongside Underwriting, partner cross-functionally with Ceded Re, Exposure Management, Capital, and Reserving teams
• Link portfolio and underwriting strategy directly into business planning and reserving cycles, ensuring underlying insights actively shape (and are consistent with) top-down targets and reserving views.
• Contribute to the design and enhancement of portfolio optimisation frameworks to unlock strategic value and drive underwriting and analytics decisions across Convex.

• Partner with underwriters on bespoke pricing, structuring, and evaluation of large, complex, or non-standard transactions that have a material impact on portfolio performance.
• Lead the design, specification, and parameterization of pricing models, dashboards, and associated decision tools in partnership with the broader Actuarial and Underwriting functions.
• Support the development of pricing and benchmarking capabilities, focusing on key risk attributes to assist underwriters’ live negotiations and serve as a robust sense check against initial portfolio intentions.

• Act as a dedicated partner to junior and senior Underwriters, providing constructive challenge and data-led insight to help influence underwriting strategy.
• Work with underwriters to identify and evaluate new business and product launches, class extensions, and emerging coverage propositions to support disciplined, profitable portfolio growth.
• Support and drive Convex’s multi-disciplinary engagement model, fostering open communication and active collaboration across Analytics, Actuarial, and Underwriting.

• Mentor junior members of the Portfolio Insights team
• Support the broader Portfolio Insights team, helping to shape our culture.

• Deliver regular portfolio reviews with Underwriting at both micro (segment/client) and macro (market) levels to uncover emerging trends, loss drivers, and market dynamics relevant to Casualty and Financial Lines (or others).
• Engage with underwriting leadership to review open market and delegated performance, translating analytical insights into clear, actionable underwriting guidance.
• Feed portfolio review findings directly into Reserving and Capital teams to inform forward-looking profitability views.

• Champion data literacy and the business adoption of analytical tools across the underwriting community.
• Evaluate emerging data sources, analytics techniques, and visualization tools to surface insights quickly, cleanly, and accurately.

Skills Knowledge and Expertise

• Qualified Actuary (FIA / FFA or equivalent) with 6+ years of actuarial pricing or portfolio management experience in commercial insurance or reinsurance lines in the London market or US market.
• SME- and product-knowledge of Casualty and/or Financial Lines
• Solid technical experience with core actuarial concepts and methodologies relevant to Casualty and Financial lines.
• Excellent influencing skills, with an aptitude for anticipating stakeholder needs and thinking about the right ways to provide support; proven track record of influencing (senior) underwriters while maintaining a collaborative, partnership-first approach.
• Communicating with impact: exceptional ability to translate complex technical actuarial concepts into concise, high-impact insights for non-technical stakeholders (both written and verbal).
• Collaborative nature: an ability to share workload and foster open communication with your peers across Convex, as well as identifying other people’s strengths and how they complement your own.
• Intellectual curiosity: an investigative mindset and desire to dig beneath and beyond the numbers.
• Desire to take on mentorship responsibilities and collective responsibilities for the overall team’s success.

Benefits

• Competitive Salary
• 30 days Annual Leave
• Birthday Leave
• 10% Employer Pension Contribution
• Private Health Insurance Medical Cover
• Group Income Protection
• Life Assurance Cover
• Enhanced Parental Leave
• Annual Health Check
• 3 days of Volunteer Leave each year
• £1,300 to spend on learning & wellbeing
• Give as You Earn
• Cycle to Work
• Season Ticket Loan

About
In 2019, Stephen Catlin and Paul Brand co-founded Convex with $1.7bn of initial committed capital to underwrite insurance and reinsurance for complex specialty risks. The company has since received an A.M. Best rating of A (Excellent) and regulatory approval to operate in London, Bermuda, Luxembourg and United States.We have also welcomed leaders in their fields from across the insurance industry, bringing a diversity of thought and approach.We live our values in every facet of our business:Earn our reputationEverything we do affects how others see us. Our success depends upon our reputation, for which all of us share responsibility.Straightforward and fairWe tell it like it is, with fairness, dignity and respect. We strive to do the right thing always, however hard it seems.Determined to improveHowever good we are, we are not complacent. We know we can always be better and we never stop trying to improve.Inspired by opportunityWe come to the market and to every client engagement without baggage. There is no limit to what we can achieve together.Enjoy being differentWe feel positive about change and we are not afraid to try new things in our quest for a better way for clients, stakeholders and colleagues to do business.