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Credit Model Validation Manager (Machine Learning & NPV Models)

Monzo Bank· Risk & Compliance
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Hybrid (UK)£79k - £93kfull-timePosted 4mo ago

About the role

Credit Model Validation Manager overseeing independent validation of credit models, including ML, decision science, and NPV models, within Monzo's Borrowing risk framework; responsible for ensuring models are fit-for-purpose, governed, explainable, and perform within risk thresholds, with broader involvement in IFRS9, stress testing, and model risk governance.

Responsibilities

  • Leading hands-on independent validation of models used for credit decisioning within our Borrowing strategies - covering a range of machine learning, decision science and NPV models.
  • - Supporting oversight and validation of broader credit risk models, including IFRS9, stress testing and economic response models
  • - Developing deep understanding of Monzo’s credit models, and providing input and challenge to model developers to improve modelling capabilities
  • - Reviewing ongoing model performance monitoring to ensure lending models perform within risk thresholds and supporting first line teams when action is required
  • - Performing statistical analyses to independently assess model performance, including developing challenger models to test assumptions
  • - Improving our Model Risk Framework, ensuring regulatory guidelines are followed and processes evolve with modelling techniques
  • - Writing clear model validation reports and presenting findings to relevant committees
  • - Partnering with first line of defence credit strategy and modelling teams to embed model risk framework and standardisation
  • - Embracing new technology and leading the adoption of AI tools to enhance model validation

Qualifications

  • Strong background and practical experience in credit model development and/or validation, with exposure to machine learning or statistical models used in credit decisioning (e.g., decision science scorecards, origination/underwriting PD models, NPV/unit economics modelling)
  • - Data-driven with strong analytical skills and deep understanding of statistical techniques for credit and model risk
  • - Proficiency with SQL and Python; experience with data visualization tools (Tableau, Looker) is a plus
  • - Understanding of how models are used in real-time decisioning and lending strategies; ability to balance commercial and risk outcomes
  • - Strong written and verbal communication skills; ability to explain complex issues to non-experts
  • - Track record of building and maintaining stakeholder relationships and providing constructive challenge
  • - Proactive and impact-driven with passion for technology

Skills

Required:Credit model development/validationPythonSQLModel risk framework
Nice to have:Data visualization

Benefits

  • £1,000 learning budget each year for books, courses and conferences
  • MacBooks provided; for fully remote workers additional home setup support
  • Flexible working hours and distributed UK working
  • Role can be based in London or fully remote within the UK
  • Benefit list available on company careers page
Last updated Jul 15, 2026. Interested? Apply on the company site.
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About Monzo Bank

A bank as smart as your phone.

YC has written a good overview of our business on their blog: https://blog.ycombinator.com/monzo-makes-money-work-for-everyone/ Our mission is to make money work for everyone. We are the UK's leading digital bank for individuals and businesses, reinventing the traditional banking industry one customer at a time. We're relentlessly mission driven and always put our customers first - from what products we chose to launch next to our transparency and use of simple language. With a Net Promoter Score of 70+, it shows. From our founding in 2015, we now have over 7 million customers in the UK (13% of UK adults) and are building out our team in the US. We've seen incredible organic growth, acquiring 150,000 customers / month in 2022, with 80% of this coming from word of mouth. Our weekly active user rate is ~60% and ~40% of our active users use us as their Main Bank account, showing that we are a product that is embedded in our users' daily lives. We've grown to ~2,450 staff (~400 of which make up the product/tech team), and are backed by YC, Stripe, Tencent, Mike Moritz, and others. Internally, we encourage an open, collaborative, and inclusive working environment - we were voted the #1 startup where people in the UK want to work for the second year running in 2022. We contribute to open source software, and we continually engage with our wonderful community. We're hiring talented, creative problem-solvers to help us build the bank of the future. Join us!

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