Python Developer - Actuarial Models

Date Posted: 13/03/2026

Location: London

Job Type: Full time

• *Python Developer - Actuarial Models
• *Location:*London – hybrid 50%
• *Contract:*Permanent
• *Hours:35 hours
• *Purpose**

In this role you will help develop the models that support the senior actuaries and heads in the Asset Liability Management (ALM) team in managing the ALM position of the Group and to assist with managing the ongoing capital adequacy of the Group especially in relation to exposure to market risks.

• *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
• Modernise the current models using Python to enhance the effectiveness and efficiency of the ALM team
• Support senior team members in defining principles and practices for the investment of assets to ensure an efficient and safe ALM position is maintained over time
• Perform the quantitative analysis for the forward-looking ALM position of each regulated insurance entity, and the overall Group, and assist with recommending actions to ensure the investment portfolio remains appropriate for the liabilities
• Support senior team members with analysing the efficiency of, and assist developing recommended actions and strategies to manage and optimise, the ALM position in light of overall business objectives (e.g. capital, liquidity, profit) including hedging strategy
• Support senior members of the team in identifying and recommending actions to maintain the efficiency of the Matching Adjustment Portfolio(s) and to maintain compliance with the Matching Adjustment requirements
• Perform analysis to support the monthly process to structure assets for inclusion in the Matching Adjustment Portfolio
• *What we’re looking for
• Strong programming skills in Python, SQL, and VBA.
• Proven track record of using technology to drive innovation and process improvement.
• Experience in actuarial modelling.
• Experience developing practical solutions to complex technical challenges.
• Experience of model development and maintenance
• Proven problem analysis and resolution experience
• Some exposure to UK life insurance sector, ALM, hedging, capital management or risk management and UK Solvency regulations (SII or SUK) and IFRS 17 would be helpful
• *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**

To apply, please submit your CV through our careers website. 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**