---
title: 'Lead Machine Learning Scientist, Search at Monzo'
canonical: 'https://feeny.ai/job/lead-machine-learning-scientist-search-monzo-cardiff-london-or-kzkqn0qs9cta'
type: 'job'
last_seen: '2026-09-16'
---

# Lead Machine Learning Scientist, Search at Monzo

- **Company:** Monzo
- **Location:** Cardiff London OR, United Kingdom
- **Work type:** remote
- **Posted:** 2026-07-08
- **Last confirmed live:** 2026-09-16
- **Apply:** https://job-boards.greenhouse.io/monzo/jobs/8041029

## Job description

🚀 We’re on a mission to make money work for everyone.

We’re waving goodbye to the complicated and confusing ways of traditional banking.

After starting as a prepaid card, our product offering has grown a lot in the last 10 years in the UK. As well as [personal](https://monzo.com/current-account/personal) and [business](https://monzo.com/business-banking) bank accounts, we offer [joint accounts](https://monzo.com/current-account/joint-account), [accounts for 16-17 year olds](https://monzo.com/current-account/16-17), a [free kids account](https://monzo.com/current-account/under-16s) and [credit cards](https://monzo.com/flex) in the UK, with more exciting things to come beyond. Our UK customers can also [save](https://monzo.com/savings), [invest](https://monzo.com/investments)and [combine their pensions](https://monzo.com/pensions) with us.

With our hot coral cards and get-paid-early feature, combined with financial education on social media and our award winning customer service, we have a long history of creating magical moments for our customers!

We’re not about selling products - we want to solve problems and change lives through Monzo ❤️

📍London/Cardiff/UK Remote | 💰 £115,000 - £150,000 + Incentive Awards tied to your performance + [Benefits](https://monzo.com/careers/)  ✨

## About our Machine Learning Search Team

We are currently embarking on one of our two top strategic priorities to make Money work for Everyone: building the Monzo Co-pilot. We are becoming an intelligent, proactive ally that handles the complexity of users financial life. We aren't just selling financial products; we are building a truly smart agent that understands users, anticipates their needs, and helps people reach their financial goals.

Our ML Search team brings together Backend, Product, Machine Learning Scientists and Data Scientists. As a Lead Machine Learning Scientist, you’ll build and ship models that help customers search for and find answers about their financial lives. You'll make it effortless for them to find the right products at the exact moment they need them.

Whether it’s surfacing the right savings product at the perfect moment, helping customers manage their spending, or simplifying financial planning, our work makes banking smarter, more intuitive, and truly customer-first.

What you’ll be working on:

As a Lead Machine Learning Scientist, you'll be a technical leader and individual contributor. We have a modern, cloud-native data platform with billions of rows of data built for fast iterations. You'll leverage your deep expertise to develop and deploy advanced ML models to our more than 15 million customers.

Your work may involve user and product embeddings to better understand customer behaviours, contextual bandits for optimising real-time decisions, or personalised ranking algorithms that improve search and discovery. You'll also build scalable, explainable, and responsible AI solutions that enhance trust, transparency, and the overall customer experience.

The technical approaches you take to help solve customer problems will be very much in your hands and we’ll strongly encourage and support experimentation and innovation. We’ll be expecting you to justify and demonstrate effectiveness along the way, making sure the approach meets our business and customer needs.

You should apply if:

What we’re doing here at Monzo excites you!

- You have a multiple year track record of excellence leading the development and deployment of advanced Machine Learning models to tackle real business problems preferably in a fast moving tech company
- You have experience developing and shipping state of the art ML models to production and delivering business impact
- You're impact driven and excited to own the end to end journey that starts with a business problem and ends with your solution having a measurable impact in production
- You have a self-starter mindset; you proactively identify issues and opportunities and tackle them without being told to do so
- You speak Python fluently and have extensive, hands-on experience with scikit-learn. You are comfortable using SQL, and keen to learn [Go lang](https://go.dev/) which is used in many of our backend microservices
- You’re comfortable working in a team that deals with ambiguity and have experience helping your team and stakeholders resolve that ambiguity
- You want to be involved in building a product that you (and the people you know) use every day
- You have a product mindset: you care about customer outcomes and you want to make data-informed decisions
- You're excited about fast-moving developments in Machine Learning and can communicate those ideas to colleagues who are not familiar with the domain
- You’re adaptable, curious and enjoy learning new technologies and ideas

Nice to haves:

- Experience working on personalisation, ranking & recommendation problems for consumer applications
- Commercial experience writing critical production code and working with microservices

The interview process:

Our interview process involves 3 main stages. We promise not to ask you any brain teasers or trick questions!

30 minute recruiter call

45 minute call with hiring manager

Full Loop: ML Modelling Interview, Product & ML interview, Behavioural Interview, Leadership interview

Our average process takes around 3-4 weeks but we will always work around your availability.

What’s in it for you:

✈️ We can help you relocate to the UK

✅ We can sponsor visas

📍This role can be based in our London office, but we're open to distributed working within the UK (with ad hoc meetings in London).

⏰ We offer flexible working hours and trust you to work enough hours to do your job well, at times that suit you and your team.

📚Learning budget of £1,000 a year for training courses and conferences

➕And much more, see our full list of benefits [here](https://monzo.com/careers/)

If you prefer to work part-time, we'll make this happen whenever we can - whether this is to help you meet other commitments or strike a great work-life balance

## #LI-REMOTE #LI-SR1

## Equal opportunities for everyone

Diversity and inclusion are a priority for us and we’re making sure we have lots of support for all of our people to grow at Monzo. At Monzo, we’re embracing diversity by fostering an inclusive environment for all people to do the best work of their lives with us. This is integral to our mission of making money work for everyone. You can read more in our [blog](https://monzo.com/blog/diversity-and-inclusion), 2026 [Diversity and Inclusion Report](https://monzo.com/blog/our-2026-diversity-and-inclusion-report) and 2025 [Gender Pay Gap Report.](https://monzo.com/blog/gender-pay-gap-report-2025)

We’re an equal opportunity employer. All applicants will be considered for employment without attention to age, ethnicity, religion, sex, sexual orientation, gender identity, family or parental status, national origin, or veteran, neurodiversity or disability status.

If you have a preferred name, please use it to apply. We don't need full or birth names at application stage 😊

## About Monzo

## Company Overview
- **One-liner**: Monzo is a UK-based digital bank offering personal and business current accounts, savings, loans, investments, and insurance through a mobile-first platform.
- **Entity Type**: Private (Series I, unicorn)
- **Headquarters**: London, United Kingdom (offices also in Cardiff, Dublin, and Barcelona)
- **Founded**: 2015
- **Founders**: Tom Blomfield, Gary Dolman, Jonas Huckestein Templestein, Jason Bates, Paul Rippon (current co‑CEOs are Diana Layfield and Conor Walsh)

## Core Business
- Primary industry/industries: Digital banking and financial services (consumer finance, payments, lending)
- Target customers: B2C (personal banking) and B2B/SMB (business banking); primarily UK‑based, with growing EU presence
- Mission or purpose statement: “Building a bank you’d be proud to use” – focused on solving problems, not selling financial products, and making money work for everyone.

## Products & Services
- **Personal Current Account**: Mobile‑banking account with budgeting tools, spending insights, and automated savings. Features real‑time notifications, card controls, and biometric authentication.
- **Business Current Account**: Separate account for small businesses with expense categorisation, invoicing, and integration with accounting software.
- **Savings Pots**: Sub‑accounts inside the app to save toward goals; includes interest‑bearing options.
- **Credit Cards & Loans**: Personal credit cards, overdrafts, and Flex (buy‑now‑pay‑later style borrowing). Also offers personal loans.
- **Investments**: Share dealing and ISA products (introduced in 2024).
- **Insurance**: Home, travel, and gadget insurance (underwritten by partners).
- **Pension Management**: Tools to manage and consolidate pension pots within the app.

## Market Standing
- **Valuation**: $5.2 B (current, per Tracxn; latest round Series I)
- **Key Metric**: Annual revenue £1 B+ (as of 31 Mar 2025), total funding $1.81 B
- **Notable Investors/Partners**: General Catalyst, Passion Capital, Accel (lead investors in previous rounds)
- **Growth Signals**: 15 million+ personal and business customers; headcount of ~3,786 (YoY growth 26.8% per Revelio Labs); expansion into EU via Dublin office; launched investment and pension products in 2024; continued lending product innovation (Flex, credit cards).

## Competitive Advantages
- **Community‑driven product development** – Customers actively suggest features, test the app, and give feedback, creating strong brand loyalty.
- **Mobile‑first architecture** – Built from scratch as a digital‑only bank, offering a seamless user experience with real‑time budgeting and spending insights.
- **Regulatory innovation** – One of the first UK challengers to obtain a full banking licence, enabling deposit‑taking and lending.
- **Open‑source culture** – Engages with the engineering community through open‑source contributions and transparent development.

## Strategic Focus
- **Product expansion**: Deepening lending and investment offerings, and building a wealth management suite.
- **International growth**: Scaling in the European market (office in Barcelona, Dublin hub, and hiring for EU‑focused roles).
- **Embedded finance**: Enabling third‑party services to use Monzo’s banking infrastructure.
- **Operational efficiency**: Using AI/ML for risk management, fraud detection, and personalised financial recommendations.

## Why Work Here
- **Culture**: Open, collaborative, and inclusive; regular community events, yoga, and lunch‑and‑learns; contributes to open‑source software.
- **Remote/Hybrid**: Office‑based roles allow occasional remote work; distributed workers receive equipment budget. Roles in London, Cardiff, Dublin, Barcelona, or UK‑remote.
- **Visas**: Monzo sponsors visas for tech, engineering, and product roles due to Home Office regulations.
- **Learning**: £1,000 annual budget for books, courses, and conferences; regular knowledge‑sharing sessions.
- **Compensation & Benefits**: Annual salary reviews; performance‑based incentive awards (cash/equity mix); pension (4% Monzo contribution, matching up to 6%); private healthcare; life insurance (4x salary); 26 days holiday + bank holidays (or opt‑out for 34 days); 8‑week sabbatical every 5 years; generous family leave (primary caregiver 26 weeks full pay, secondary 13 weeks full pay); paid sick leave; cycle‑to‑work scheme.
- **Office Perks**: Free breakfast, hot lunches twice a week, snacks, and drinks in London office.

## Sources
1. [monzo.com/careers](https://monzo.com/careers) – Benefits, visa policy, flexible working, culture
2. [monzo.com/about](https://monzo.com/about) – Company overview, mission, customer count
3. [tracxn.com/d/companies/monzo](https://tracxn.com/d/companies/monzo/__HguZJzK7Q_qZsyIz1Y4VwV75H5fHjDMtGaXPelPAxpU) – Funding, valuation, revenue, employee count, founders, CEOs
4. [job-boards.greenhouse.io/monzo](https://job-boards.greenhouse.io/monzo/jobs/7963253) – Open roles, location details
5. [reveliolabs.com/companies/monzo-bank/employees](https://www.reveliolabs.com/companies/monzo-bank/employees/) – Headcount growth

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