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Senior Data Scientist - Credit Risk Modelling

iwocaLondonData Science
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Salary
£90K - £120K GBP
Job type
Full-time
Work mode
Remote
Posted
4 Sept 2026
Status
Open · checked 7d ago

About this role

The Senior Data Scientist position at iwoca is a permanent hybrid or UK remote role focusing on credit risk modelling for lending operations. This opportunity suits an experienced data professional who wants to lead end-to-end machine learning projects and drive technical direction.

Role Overview

Joining the Credit Risk Modelling team at iwoca involves owning probabilistic machine learning and Customer Lifetime Value models for UK and German lending portfolios. The team consists of approximately twelve data scientists working on automated decisions and manual credit workflows. Responsibilities include maintaining production health, driving incremental development, and conducting research that influences pricing and portfolio strategy.

Key Responsibilities

Own credit and Customer Lifetime Value modelling projects completely from opportunity identification to commercial impact.
Manage causal estimation of offer terms, exploring how loan amount, duration, and pricing affect outcomes.
Unify automated and manual credit models under a common cost function.
Develop multi-stage IFRS accounting models where recovery predictions refine upfront loss estimates.
Research generalized frameworks to handle credit and customer lifetime value simultaneously.
Utilize artificial intelligence tools for rapid prototyping and expanding research and development capabilities.

Requirements

Clear and concise written and verbal communication skills with the ability to tailor technical details to various audiences.
Solid statistical foundations in probability from a quantitative field, treating uncertainty and calibration as priorities.
Experience building and shipping supervised machine learning models into production environments end to end.
A research mindset focused on proactive exploration and discovering step-change improvements during R&D cycles.
Strong critical judgement regarding model outputs, capable of defending reasoning and evaluating peer or AI-generated work.
Demonstrated project leadership in framing, method selection, and shipping complex modeling initiatives.
Fluency in using artificial intelligence as a primary tool for automation and prototyping.

Nice to Have

Domain expertise working in credit risk, lending, or customer lifetime value modelling.
Experience shipping gradient boosting or neural networks on tabular data in production.
Practical background using Bayesian methods, hierarchical models, or MCMC.
Time series modelling experience dealing with temporal data, drift, seasonality, or autocorrelation.
Proficiency in Python.

Skills and Tools

Python
Machine Learning
LLM
Statistical Modelling
Production ML

Salary and Benefits

Salary range from £90,000 to £120,000 per year, benchmarked against market rates with quarterly performance reviews.
Flexible working hours and hybrid or UK remote work options.
Vitality medical insurance with discounted gym membership and a private GP service for employees, partners, and dependents.
25 days of annual leave plus a birthday day off, the option to buy or sell five extra days, and unlimited unpaid leave.
Fully paid one-month sabbatical after four years of service.
Mental health support with instant access to external counselling and therapy sessions.
3% pension contributions on total earnings and an employee equity incentive scheme.
Generous parental leave, nursery tax benefit scheme, electric car scheme, and cycle-to-work scheme.
Two annual company retreats abroad and a dedicated learning and development budget with access to learning platforms.

About the Company

Iwoca was built to provide flexible and responsive finance to small and medium enterprises, helping them overcome cash flow pressures. Utilizing smart technology, data science, and customer service, the company has funded over 100,000 businesses with more than £4 billion. The organizational culture promotes independent thinking, evidence-based decisions, challenging untested logic, and internal growth with offices located in London, Leeds, Berlin, and Frankfurt.

How to Apply

Interested candidates should visit the official iwoca careers page to submit an application and include salary expectations.

Skills and tech stack

PythonLLM

Questions candidates ask

Is this role remote?

Yes, this role can be performed as a hybrid position from the London office or fully remote from anywhere in the UK.

What is the salary range for the Senior Data Scientist position?

The expected salary range for this role is between £90,000 and £120,000 per year, depending on experience.

What programming language does the team use?

The Credit Risk Modelling team primarily uses Python for their technology stack.

What team will I be joining?

You will join the Credit Risk Modelling team, which consists of about twelve data scientists handling credit risk and customer lifetime value modelling.

What kind of benefits are included?

Benefits include medical insurance, private GP access, flexible working hours, 25 days of holiday, a 3% pension contribution, an employee equity incentive scheme, annual company retreats, and a learning and development budget.

Ready to apply?

The application is on the official iwoca careers page.

Apply on company site