Staff Data Scientist

Cardiff, London or Remote (UK)RemoteFull-time£124k2026-09-30 → 2026-11-10

HybridVisa sponsorship offered

Core

Lead data strategy for complex, business-critical problems involving ambiguous framing, cross-team dependencies, and significant customer/commercial/regulatory trade-offs.

Role type

Staff Data Scientist (Senior IC, Strategy & Mentorship)

Builds

Strategic data initiatives, measurement strategies, experimentation frameworks, and reusable data science standards.

Domain

Fintech / Banking / Data Science

Deliverable

production ML models

Required skills

Strategic problem framing, causal inference, forecasting, optimisation, decision science, SQL, Python, technical direction, mentoring, cross-functional partnership

Preferred skills

Experience in Borrowing, Growth, Payments, Fincrime, Wealth, or Core banking domains

Technologies

Looker, SQL, Python

Responsibilities

Shape and lead data strategy for large domains; Identify and frame ambiguous strategic problems; Partner with senior leaders to influence strategy; Establish measurement strategies and metric maps; Set best practices for experimentation and decision science; Remain hands-on with complex data and technical challenges; Coach and mentor data scientists and analytics engineers

Seniority

Staff, hands-on IC with strategic leadership

About Monzo

Monzo is on a mission to build technology that connects the world. We are more than a platform; we are a global infrastructure that millions of people rely on for their daily lives, finances, and communication. This puts us in an incredibly unique position. We are the custodians of immense amounts of sensitive financial data as well as people’s money that are highly attractive to sophisticated adversaries and state-level actors.