DB Calculation Development and Test Specialist
Date Posted: 08/01/2026
Location: Reigate
Job Type: Full time
Apply NowDefined Benefit Calculation Development and Test Specialist
Location: London – hybrid 50%
Contract: Permanent
Hours: 35 hours
Purpose
This role is key to support the growth and development of the Defined Benefit (DB) area and primarily our member option calculation function.
The purpose of this role is to assess member option calculation requirements, scope and develop calculation requirements and ensure the accuracy of our solutions.
This role will also involve working collaboratively to develop capabilities and test bespoke, automation member option tools within the DB Business.
The role holder will also be able to provide other actuarial calculations which may include, but not limited to, new business and true up activities to support our growth agenda.
About Just
We help people achieve a better later life. That’s our purpose and it’s the reason we exist. We are a fast-growing company helping customers enjoy the retirement they deserve. We do this through a variety of market leading, award-winning products and services, delivered by a diverse team of over 1,400 purpose-led colleagues who genuinely put the customer at the heart of everything we do.
This is a brilliant time to join our business. We are on an exciting growth journey to become the UK’s most loved retirement expert.
Key responsibilities
- Drive development and refinement of features of the member option calculation tool.
- Test and review automated member calculation results for accuracy and complete UAT on the tool.
- Prepare and/or check internal sign off documentation for each development as required following agreed sign off process
- Develop a deep knowledge of all systems and tools used our actuarial and operational teams.
- Proactively drive projects forward to ensure they are progressed in line with expected timescales.
- Actively assist in development of junior DB team members through training and knowledge sharing
- Collaborate with the DB Pricing and Proposition Development teams to ensure our tools reflect insured benefits and meet benefit design briefs
- Work collaboratively with colleagues across DB to ensure that tool and data structure changes flow through effectively to the wider DB ecosystem.
What we’re looking for
- Obtained/part FIA qualifications
- Experienced professionals without FIA qualifications, but with pensions and model development experience but will also be considered
- Strong analytical and problem solving skills
- Strong IT skills, particularly Excel
- Good interpersonal, team working and leadership skills
- Excellent verbal, and written communication, with the ability to present complex financial concepts in a clear and concise manner
Our behaviours
At Just you’ll have the opportunity to develop your career, whilst making a difference to the lives of those around you. You’ll be part of a company with a strong and distinctive culture - we’re ambitious, curious and collaborative – and every decision we make centres around being Just and delivering the best outcomes for our customers.
What’s in it for you
A competitive salary, pension scheme and life assurance
25 days annual leave plus an additional day on us for your birthday
Private medical cover and income protection, just in case
A generous and highly achievable bonus scheme
Opportunities to progress your career in-role and within the company
Free access to the Headspace app, 24/7 employee assistance helpline and trained physical and mental health first aiders
A variety of employee funded benefits available via our online benefits portal
Plus, several additional purchase options available for you and your loved ones
Explore our full range of benefits on our dedicated benefits page.
Belonging at Just
Valuing diversity of thought and fostering a sense of belonging is critical to our business success, driving innovation and balanced decision making. Our work on DEIB (Diversity, Equity, Inclusion and Belonging) aims to deliver a brilliant employee experience underpinned by a sense of belonging, where our people feel proud to work at Just.
We remain committed to our publicly disclosed HM Treasury Women in Finance Charter and Race at Work Charter targets and support a wide range of employee network and events, championing issues including intergenerational working, social mobility and neurodiversity.
Application details
Please submit your CV using the 'apply now’ button. Shortlisted candidates will be contacted regarding next steps which may include an initial phone interview and in-person assessment.
Be Bold. Be Brilliant. Be Just