Actuarial Reserving Manager

Simply Business; London; Hybrid; GBP 125,000 - 150,000; Full time

Job summary

A leading insurance firm in London is seeking an Actuarial Reserving Manager for a 14 to 15-month contract. This role includes ownership of the reserving process and close collaboration with senior leadership. Ideal candidates are qualified actuaries with experience in non-life insurance and strong skills in R, Python, and SQL. Join a dynamic team making a measurable difference in a fast-paced environment.

Benefits

25 days annual leave

Flexible parental leave

Private medical insurance

Mental health support

Development resources

Salary sacrifice car scheme

Qualifications

• Post-qualification experience in non-life (GI) insurance or reinsurance.
• Detail-oriented, organised, and compliance-focused.

Responsibilities

• Manage the full end-to-end reserving process.
• Lead the annual profit share process with providers.
• Collaborate with Finance for accurate actuarial inputs.

Skills

Actuarial Reserving

Profit Share Arrangements

R

Python

SQL

Education

Qualified Actuary (FIA or equivalent)

Tools

SAS

Job description

Overview

Here’s what you’ll be doing: Do you thrive on ownership, problem-solving, and making a measurable difference? We’re on the lookout for a talented Actuarial Reserving Manager to join our dynamic team on a 14 to 15-month fixed-term contract. This is a high-autonomy, high-impact role where you’ll be the pivotal figure in ensuring our financial strength and strategic agility. You’ll have the opportunity to take full ownership of the end-to-end reserving process, directly influencing our business and working closely with senior leadership. This role isn’t just about the numbers; it’s about providing actionable actuarial insight that drives our strategic decisions. You’ll be the go-to expert for all things reserving and profit share, building and refining our processes to be robust, auditable, and forward-thinking. If you’re ready to put your skills to the test in a fast-paced environment where your work has a direct impact on the bottom line, then this is the perfect opportunity for you.

Responsibilities

• Own and manage the full end-to-end reserving process, conducting monthly and quarterly reviews, and assessing reserve adequacy.
• Lead the annual profit share process, including accurate calculations and effective liaison with our insurance capacity providers.
• Work closely with the Finance team to ensure accurate and timely actuarial inputs for financial reporting, while maintaining auditable processes.
• Collaborate with our Risk Pricing team to ensure consistency and identify growth opportunities that protect our performance.
• Conduct deep-dive claims analysis to identify trends and inform wider business strategy.
• Ensure the reserving function is always “audit ready”, with clear documentation and compliance.

Qualifications

• A qualified actuary (FIA or equivalent) with post-qualification experience in non-life (GI) insurance or reinsurance.
• Highly experienced in actuarial reserving and profit share arrangements, with a strong technical and commercial grounding.
• Skilled in R, Python, or SAS and comfortable building and validating actuarial models.
• Proficient in SQL, with the ability to work directly with complex data to drive meaningful insights.
• A strong communicator who can present actuarial findings clearly to non-technical stakeholders, including senior leadership.
• Detail-oriented, highly organised, and focused on ensuring compliance and process integrity.

We know it’s tough, but please try to avoid the confidence gap. You don’t have to match all the bullet points above to be considered for this role.

We encourage people of all different backgrounds and identities to apply. We are committed to maintaining an inclusive, supportive place for you to be you and do your very best work.

About Simply Business

We insure small businesses and enable big dreams – not just for our customers, but for our people and communities too. With over 1,000,000 active insurance policies, we protect builders, bakers, landlords and more than 1,200 other trades.

We’re a technology company as well as one that sells insurance. That means we build, we fail, we learn and we improve. We’re a B Corp too, which recognises our strong track record of having a positive impact on people, society and the environment.

Benefits

We offer a great work-life balance where every team member has a manageable workload and the flexibility to work hybrid.

On top of the 25 days annual leave (plus bank holidays), we offer leave that suits your needs. Plus the option to buy five more days of holiday with your flexible benefits.

Our flexible parental leave allows you to approach an important time how you want – with six months full pay to the primary caregiver and four weeks full pay if you’re the secondary caregiver.

Our life event leave is an extra days leave every two years for big moments in life like moving house or your birthday. And as a thank you to our long-serving employees we offer a two week paid sabbatical after five years of service, then four weeks off after ten years of service.

Core benefits include private medical insurance through BUPA (covering pre-existing conditions) and a health cash plan for everyday medical expenses. We offer a competitive salary based on experience and market, plus the potential to earn an annual bonus based on performance.

There’s access to development via our dedicated learning platform and support for mental health with counselling. We’ll match pension contributions up to five percent, and provide a life assurance policy with potential to increase to ten times salary via the flexible benefits scheme. We also offer a salary sacrifice car scheme and a flexible benefits package to cover options like critical illness, dental, travel insurance, or a gym membership.

Ready to join us and drive our success as a high-performing team? Apply today.