Staff Data Scientist
Barcelona · Cardiff, London or Remote (UK) · London · 16-17 years experience · Remote · Posted Sep 30, 2026
At a glance
- Experience
- 16-17 years experience
- Workplace
- Remote
- Location
- Barcelona · Cardiff, London or Remote (UK) · London
- Visa sponsorship
- Visa sponsorship available
About the role
- This is a senior individual contributor role for someone who combines deep technical expertise with strong commercial judgement.
- As a Staff Data Scientist, you will lead efforts on strategically important, business-critical problems and steward initiatives end-to-end.
- You will be a trusted technical partner to senior leaders, raise the bar for Data Science across Monzo, and build capability in others through coaching and clear standards.
Responsibilities
- Shape and lead the data strategy for a large domain or collective, connecting customer and commercial goals to a clear portfolio of high-impact Data Science work
- Identify, frame and lead strategically important problems where the path is ambiguous, dependencies span teams, and decisions involve meaningful customer, commercial, regulatory or operational trade-offs
- Partner with senior leaders across product, engineering, ML, design, research, risk and operations, bringing an independent technical perspective that influences strategy and turns it into measurable outcomes
- Establish measurement strategies and metric maps that clarify how customer behaviour, product changes and business outcomes connect, enabling teams to test assumptions and make better decisions faster
- Set and evolve best practices for experimentation, causal inference, forecasting, optimisation and decision science, choosing methods that are proportionate to the decision and its risks
- Remain hands-on where your expertise is most valuable: exploring complex data, designing analyses and experiments, building models or prototypes, and resolving the hardest technical questions
- Steward critical data products and initiatives end-to-end, ensuring they are robust, well-governed, clearly documented and adopted by the people who need them
- Balance pace and analytical rigour, making pragmatic trade-offs while protecting the quality, reproducibility and interpretability of your work
- Raise Data Science standards across Monzo through technical direction, proposals, reviews, reusable methods and thoughtful challenge
- Coach and mentor data scientists and analytics engineers, using live projects and wider discipline initiatives to build sustainable capability beyond your own individual output
Requirements
- You have an exceptional track record of leading complex, business-critical Data Science work from ambiguous problem framing through to measurable outcomes
- You have shaped strategy across a large product or business domain and can influence senior leaders through clear, independent judgement
- You bring deep expertise across several Data Science disciplines and can set the technical direction for work involving significant complexity, uncertainty or risk
- You repeatedly create clarity across organisational boundaries, resolve difficult dependencies and turn long-term strategy into decisive action
- You communicate complex ideas, assumptions and risks with clarity, and hold a consistently high bar for analytical quality, governance and reproducibility
- You remain a highly credible hands-on practitioner with SQL and Python, while raising standards and multiplying the impact of experienced colleagues
Benefits
- £124,400 - £165,000 salary range
- Incentive Awards tied to performance
- Learning budget of £1,000 a year for books, training courses and conferences
- Visa sponsorship available
- Relocation assistance to the UK or Spain
Workplace
- Role can be based in London or Barcelona offices, or open to distributed working within the UK with ad hoc meetings in London
- Flexible working hours offered
Skills
- SQL
- Python
- Looker
- Experimentation
- Causal Inference
- Forecasting
- Optimisation
- Decision Science
