Senior/Staff Data Analyst

Senior/Staff Data Analyst

Full-Time 63000 - 77000 £ / year (est.) Home office (partial)
Castle Island

At a Glance

  • Tasks: Shape product decisions through data analysis and drive impactful insights.
  • Company: Join MoonPay, a leading player in the crypto and fintech space.
  • Benefits: Flexible remote work, competitive salary, and opportunities for professional growth.
  • Other info: Dynamic team culture focused on innovation and collaboration.
  • Why this job: Make a real impact on the future of financial products with cutting-edge technology.
  • Qualifications: 5+ years as a data analyst, advanced SQL skills, and strong communication abilities.

The predicted salary is between 63000 - 77000 £ per year.

About MoonPay

MoonPay is for builders with something to prove. This isn't a "work on cool crypto stuff" company. It's a high-standards, high-velocity, high-accountability company building the operating system for value movement. If the internet moves information, we move value: crypto, stablecoins, tokenized assets, and whatever comes next. Four offerings make that real: fund, tokenize, trade, and spend. 30M+ customers and 500+ ecosystem partners run on us. Licensed in the U.S. Regulated across the UK, EU, Canada, and Australia. AI is the default operating mode here. It's woven into every role, and we expect you to use it daily. It handles the manual work so you can deliver on what actually matters. You'll thrive here if outcomes excite you more than process, if impact motivates you more than titles, and if you want hard problems, real ownership, and teammates who love winning, building, and doing it together. The bar is high. The pace is real. We're building for what's next, for humans and agents.

Recent recognition:

  • Forbes' America's Best Startup Employers 2026
  • 2nd in Crypto Services on Fortune's inaugural Crypto 100
  • The Sunday Times Best Places to Work two years running

Research has shown that women are less likely than men to apply for this role if they do not have experience in 100% of these areas. Please know that this list is indicative, and that we would still love to hear from you even if you feel that you are only a 75% match. Skills can be learned, diversity cannot.

Locations Supported: London, UK (primary), Remote (Europe). Relocation available: Case by case. Work pattern: Remote across Europe, with hybrid working encouraged if you're near a Moonbase (around 2 to 3 days per week in the London office).

About the Opportunity

In this role, you'll help shape MoonPay's product and business decisions through data, combining deep analysis, experimentation, and strong stakeholder partnership to drive real impact. You’ll sit within our centralised Product Data team and work closely with Product and Engineering, owning analytics across the full product lifecycle, from defining problems and success metrics through to launching, measuring, and optimising products at scale. Your work will directly influence product strategy, customer experience, and business health, helping teams make better, faster decisions through trusted insights and clear narratives. You’ll also raise the leverage of the whole team by building reusable, AI-assisted analytics skills that let the wider org self-serve reliable answers. This is a great opportunity for someone who enjoys turning complex data into clear direction, influencing decisions, and helping shape the future of high-impact financial and crypto products.

What You Will Do:

  • Partner with product and business teams to run rigorous analysis (root cause, opportunity sizing, funnel drop-off) and turn it into clear, prioritised recommendations, moving across problem areas as priorities shift.
  • Define, document, and maintain clear metric definitions and business context, so stakeholders can understand the performance of their area and AI tools can interpret our metrics correctly (e.g. Transaction Success Rate, Fraud Rate).
  • Set up tracking and monitoring for new launches and changes, and quantify and measure their impact on KPIs.
  • Build and maintain a reporting layer, with automated alerting and root cause analysis that flags when KPIs move unexpectedly and why.
  • Design, run, and interpret experiments, from A/B tests to quasi-experimental methods like difference-in-differences when randomisation isn't possible.
  • Model robust, trusted data in our dbt and BigQuery layer, safeguarding its quality through testing, documentation, and certification in collaboration with engineering.
  • Create reusable, AI-assisted analytics skills that scale the team's impact and help Product and Engineering self-serve.
  • Communicate complex concepts and findings to technical and non-technical audiences across different teams, while ensuring clarity and understanding to drive critical business decisions.

About You

Must-have experience and skills:

  • 5+ years of hands-on experience as a data analyst or data scientist, preferably in a product-focused role.
  • Advanced SQL and data visualisation are second nature to you.
  • Hands-on experience building data models in a modern cloud warehouse and transformation framework (e.g. dbt with BigQuery, Snowflake), with a strong instinct for data quality.
  • A solid grasp of statistics and probability, including experiment design and interpretation (A/B and quasi-experimental methods such as difference-in-differences).
  • A working understanding of how a payments or fintech business operates, including fraud, chargebacks, KYC/AML, and payment success rates.
  • Comfort using AI-assisted and LLM tools to accelerate analysis, and curiosity about building reusable skills that scale your impact.
  • Exceptional communication and stakeholder skills. You can distill complex findings for any audience up to C-level, and lead projects independently.

Nice-to-have experience:

  • Familiarity with our stack (dbt, BigQuery, Looker, Python) and AI tooling such as Claude Code.

Senior/Staff Data Analyst employer: Castle Island

ARQ is an exceptional employer for a Senior Data Scientist, offering a unique opportunity to lead data science initiatives in a dynamic growth environment. With a competitive salary, stock options, and a discretionary performance bonus, employees are rewarded for their contributions while working alongside a world-class team that fosters skill development. The collaborative work culture encourages innovation and provides the chance to make a significant impact on the fintech landscape in Latin America.

Castle Island

Contact Details:

Castle Island Recruitment Team

StudySmarter Expert Advice🤫

We think this is how you could land Senior/Staff Data Analyst

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We think you need these skills to ace Senior/Staff Data Analyst

Data Analysis
SQL
Data Visualisation
Data Modelling
Cloud Data Warehousing
dbt
BigQuery

Some tips for your application 🫡

Show Off Your Projects:In the world of data science, your projects can speak volumes about your skills. Make sure to showcase a few key projects in your CV or portfolio, especially those that highlight your ability to work with data sets, build models, or use relevant tools like Python, R, or SQL. Don’t forget to include links to any GitHub repositories if applicable!

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How to prepare for a job interview at Castle Island

Brush Up on Your Statistics

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