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Data Scientist - iwocaPay Risk Squad

iwocaLondonData Science
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Salary
£60K - £80K GBP
Job type
Full-time
Posted
4 Aug 2026
Status
Open · checked 7d ago

About this role

The Data Scientist position at iwoca in London is a hybrid role within the iwocaPay Risk Squad focused on building automated credit decisioning models. This opportunity suits an independent data scientist with strong statistical and machine learning expertise who wants to shape risk modelling in a growing B2B financial product.

Role Overview

Join the iwocaPay Risk Squad in London as a Data Scientist to co-own the full credit modelling stack alongside another team member. This role involves designing models, reviewing peer work, and deciding priorities to control automated credit decisioning and fraud prevention. The squad manages counterparty risk, portfolio-level strategy, and loss monitoring for iwoca's B2B Buy Now Pay Later product. You will work on open-ended modeling problems, improve performance across customer segments, and build models from scratch for new products.

Key Responsibilities

Own and manage credit models that determine safe funding access and terms for small businesses using iwocaPay.
Develop automated credit decisioning and fraud prevention models influencing lending choices.
Handle counterparty risk, portfolio-level strategy, and continuous monitoring of losses, chargebacks, and segment performance.
Build and maintain data pipelines alongside core modelling work.
Collaborate on model design, review team member work, and set priorities within a small squad.

Requirements

Expertise in supervised machine learning on tabular data, encompassing end-to-end production experience from exploration to deployment and monitoring.
Strong statistical foundations in probability, uncertainty quantification, model calibration, and error reasoning.
Ability to work independently in an early-stage environment by scoping problems, building infrastructure, and shipping models autonomously.
Commercial pragmatism balanced with rigour on high-stakes models.
Data engineering capability to build pipelines and manage datasets alongside modelling tasks.
AI fluency to automate and accelerate analytical and engineering work.
Clear communication skills to translate technical details for non-technical colleagues across product, risk, and leadership.

Nice to Have

Experience with credit risk modelling or financial services lending.
Familiarity with transfer learning, domain adaptation, or techniques combining datasets of different sizes and relevance.
Experience deploying non-linear models such as gradient boosting or neural networks on tabular data in production.
Python proficiency for day-to-day tasks.

Skills and Tools

Python
Supervised Machine Learning
Tabular Data Modelling
Statistical Inference and Probability
Data Engineering and Pipeline Building
Credit Risk Modelling

Salary and Benefits

Salary range from £60,000 to £80,000 per year, with quarterly performance and salary reviews.
Flexible working hours.
Medical insurance from Vitality with discounted gym membership and a private GP service for you, partner, and dependents.
25 days of annual leave plus an extra day off for your birthday, options to buy or sell holiday days, and unlimited unpaid leave.
One-month fully paid sabbatical after four years of service.
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 and a dedicated learning and development budget with access to learning platforms.

About the Company

To support small businesses with flexible and responsive finance, iwoca uses smart technology, data science, and customer service to help business owners. The company has funded over 100,000 businesses with more than £4 billion. iwoca fosters a culture based on independent thinking, evidence-based decisions, and challenging untested logic.

How to Apply

To apply for this role, please visit the official company careers page and submit your application along with your salary goals.

Skills and tech stack

Python

Questions candidates ask

What is the salary for the Data Scientist position at iwoca?

The expected salary range for this role is from £60,000 to £80,000 per year.

Is this a remote position?

No, this is a hybrid role located in London, United Kingdom.

What programming language does the team use daily?

Python is the primary programming language used by the team day to day.

What squad will the Data Scientist join?

The Data Scientist will join the iwocaPay Risk Squad.

What benefits are provided with the job?

Benefits include flexible working hours, Vitality medical insurance, a private GP service, 25 days of holiday, a paid sabbatical after four years, pension contributions, an equity incentive scheme, and a learning and development budget.

Ready to apply?

The application is on the official iwoca careers page.

Apply on company site