The Role
Lead long-term portfolio design and pricing risk management for long-tail, casualty, and financial lines insurance portfolios. Partner with underwriters and actuarial, capital, exposure management, reinsurance, and innovation teams to evaluate new business, specify and integrate pricing models, shape underwriting priorities, and improve analytical tooling. Drive sustainable portfolio growth, commercial strategy, and data-informed underwriting decisions across London and US markets.
Summary Generated by Built In
The Portfolio Insights team operates as a core strategic partner to our Insurance and Reinsurance divisions. As a Senior Portfolio Actuary, you will operate as an integral part of our underwriting teams to architect long-term portfolio design and manage pricing risks across a highly diverse, multi-geography product suite in London and the US. You will be integral to the commercial strategy for long-tail lines, collaborating seamlessly with cross-functional experts in ceded re, exposure management, actuarial, capital, and innovation to build highly resilient, future-proof portfolios.
Key Responsibilities
- Long term portfolio design: partner with underwriters on the strategic design and management of net portfolios across long-tail, casualty, and financial lines to ensure long-term, sustainable growth.
- Model design and integration: lead the specification and parameterisation of pricing models in close partnership with the broader Actuarial and Underwriting functions.
- Integrated commercial advisory: act as a dedicated partner to evaluate new lines of business, balancing growth with overarching portfolio strategy.
- Strategic business partnering: leverage your deep product expertise to shape underwriting priorities, co-owning business outcomes and driving commercial success.
- Analytics leadership: champion the evolution of our market-leading tooling, increasing business transparency and confidence in data-driven decisions.
Skills Knowledge and Expertise
- Qualified Actuary with 7+ years of actuarial pricing experience across long-tail or casualty insurance lines in the London market.
- Strong influencing skills, with an aptitude for anticipating stakeholder needs and think about the right ways to provide support. You’ll understand underwriters’ priorities and how you can add value.
- Communicate with impact; you are a thoughtful and effective communicator with a diverse audience both face-to-face and in writing.
- Strong insights on modern tooling and how it can be leveraged for the benefit of underwriting and portfolio analysis.
- Collaborative nature, which reflects itself in your ability to share workload and foster open communication with your peers across Convex and the humility to recognise other people’s strengths and how they complement your skill set.
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.
Skills Required
- Qualified Actuary
- 7+ years of actuarial pricing experience
- Experience across long-tail or casualty insurance lines
- Experience in the London insurance market
- Strong influencing and stakeholder management skills
- Strong written and verbal communication skills
- Understanding of modern analytical tooling for underwriting and portfolio analysis
- Collaborative approach and ability to work cross-functionally
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The Company
What We Do
Convex is an international specialty insurer and reinsurer focused on complex risks, claims, and underwriting across a wide range of business lines.

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