Data Scientist - Credit Cards in London

Data Scientist - Credit CardsHybrid in London, United KingdomWe're looking for a Data Scientist to join the Credit Cards team.You'll build the credit risk, pricing, and customer lifetime value models behind iwoca's business credit card - who gets a card, with what features, and at what rate.Opportunities often don't wait, and cash flow pressures can appear overnight. To keep going, and growing, SMEs need finance that's as flexible and responsive as they are.Our smart technology, data science and five-star customer service ensures business owners can act with the speed, confidence and control they need, exactly when it's needed.Our passionate team is driven to help even more SMEs succeed, through access to better finance and other services that make running a business easier. Our ultimate mission is to support one million SMEs in their defining moments, creating lasting impact for the communities and economies they drive.The teamiwoca launched its business credit card at the start of 2026. It gives small businesses a fast, flexible way to pay for what they need and control their cash flow, alongside iwoca's loans. The card is a core part of iwoca's long-term growth.The Credit Cards team builds the card on iwoca's existing lending infrastructure and customer base. The team is made up of commercial strategy product, engineering, operations, and a data scientists.The roleAs a Data Scientist in Credit Cards, you'll do the analysis and modelling for the card's commercial decisions. You'll often have small samples and incomplete data, which suits Bayesian methods. You'll run your own projects, from framing the question with the commercial lead to helping the team act on the result. You will be embedded in a broader Credit Cards Team and learn about the product and customer needs. You'll share methods with Credit Risk Modelling, especially where card and lending models overlap, and with data scientists across iwoca in the analytics guild.Live project examples:Credit limits. Setting initial limits that balance risk with what each customer needs, and designing a framework that adjusts them as spending and repayment data comes in.Measuring cross-sell and combined credit exposure for businesses that hold both the card and an iwoca loan. The requirementsEssential:Statistical foundations. You have a background in probability and statistics from a quantitative field. You've used what you learnt about a business's customers and economics to shape your analysis.AI leverage. You've used AI to produce work you couldn't have delivered without it - a prototype, an automation, or a modelling pipeline others use. You judge where it helps and where it doesn't, and you check its output before anyone acts on it.Communication. You adapt technical detail for non-technical colleagues in commercial and strategy roles.Bonus:Lending experience. You've worked on credit risk, pricing, or customer lifetime value in lending or financial services.You've worked with scarce data and made principled choices about regularisation or sequential updating.Production machine learning. You've taken models from exploration through to deployment and monitoring.Coding in Python. The team works in Python and you’ll write analyses and code in that language.We routinely benchmark salaries against market rates, and run quarterly performance and salary reviews.We're a tech company and believe in the power of AI to help us work faster and better. We provide the infrastructure where every iwocan always has access to the best models and where those models have access to all of our data. We will help our people to learn how to use and grow with the new tools available to them.Events and community-led groups, including running groups, padel, and monthly ping-pong and pool competitions.Medical insurance from Vitality, including discounted gym membership.A private GP service (separate from Vitality) for you, your partner, and your dependents.25 days’ holiday per year, an extra day off for your birthday, the option to buy or sell an additional five days of annual leave, and unlimited unpaid leave.A one-month, fully paid sabbatical after four years.Instant access to external counselling and therapy sessions for team members that need emotional or mental health support.3% Pension contributions on total earnings.An employee equity incentive scheme.Generous parental leave and a nursery tax benefit scheme to help you save money.Electric car scheme and cycle to work scheme.