---
title: 'Staff Machine Learning Engineer at MoonPay'
canonical: 'https://feeny.ai/job/staff-machine-learning-engineer-moonpay-london-tm08v43gaqxk'
type: 'job'
last_seen: '2026-09-07'
---

# Staff Machine Learning Engineer at MoonPay

- **Company:** MoonPay
- **Location:** London, United Kingdom
- **Employment:** full-time
- **Work type:** hybrid
- **Posted:** 2026-08-24
- **Last confirmed live:** 2026-09-07
- **Apply:** https://jobs.lever.co/moonpay/a12369da-ded2-4798-b176-b22928e9cf21

## Job description

## 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 Relocation available: No Work pattern: Hybrid: our teams meets in the office ~1-2 days a week

## About the Opportunity

Every transaction we process requires a real-time decision. Declining a legitimate transaction leaves a customer stuck at the point of purchase, while approving a fraudulent one carries a direct cost. This role owns the decisioning system and underlying platform. From the serving path and feature infrastructure to the underlying models and the machinery required to make safe, live updates. You will continuously improve the platform and our day to day workflows, rather than treating these as secondary projects. As a Staff Machine Learning Engineer, you will hold a hands-on technical position. You will be part of a team that builds, ships, and maintains the entire machine learning lifecycle. Our main focus is fraud detection and prevention, an adversarial domain where opponents constantly adapt and feedback arrives in the form of financial impact. Alongside, this we build broader capabilities to enable machine learning across Moonpay. Lead through ambiguity Turn vague problems into well-defined solutions and bring people with you. Set the technical bar through rigorous reviews, clear standards, and lasting engineering habits. Build and scale the platform Develop feature infrastructure across batch, near-real-time, and in-request paths, managing specific freshness budgets for each. Maintain alignment between training and serving to ensure models behave in production exactly as they did offline. Integrate feedback loops to capture every decision and its outcome, including blocked transactions where results are counterfactual. Scale the platform as volume and model complexity grow, ensuring operational load remains manageable. Decide in real time Own the services that score transactions in-flight, inside a hard latency budget Design the degraded paths: what we answer when the model can't, and who agreed that policy Ship safely, continuously Mature the replay, shadow and staged-rollout tooling until changing a live model is routine and reversible Own models across their lifecycle, from training through to retirement, and catch decay long before losses confirm it

## About You

Must-have experience and skills Real-time serving. You have built and operated high-availability services that execute within strict latency budgets on critical paths, and you’ve designed robust fallback mechanisms Systems thinking. You view the architecture holistically: identifying failure points, managing graceful degradation, and ensuring the system remains responsive even when dependencies fail. You build the feedback loops that allow a system to learn from its own decisions. Engineering craft. You write code other people are happy to inherit — tested, typed, and correct when events arrive twice, late, or out of order. Adding the next feature to something you built is fast and painless. Pipelines in production. You have owned feature or data pipelines end-to-end, including troubleshooting cases where offline and production metrics diverged and resolving the underlying discrepancies. Ambiguity and influence. You've taken a problem nobody had scoped and turned it into work that shipped, and raised the level of the engineers around you while doing it. Nice-to-have experience Decision explainability. You've built systems where the reason for a decision mattered as much as the decision: audit trails, per-layer attribution, llm-driven analyses, or defending a model's behaviour to a non-technical audience. Anomaly detection. You have developed systems to detect novel attack patterns and emerging abuse without existing labels, identifying suspicious behavior relative to historical baselines. Familiarity with our stack: GCP, BigQuery, Bigtable, Memorystore, Vertex AI, Kubernetes.

## About MoonPay

## Company Overview
- **One-liner**: MoonPay builds payment infrastructure for crypto, allowing individuals and businesses to easily buy, sell, and swap digital assets using traditional payment methods.
- **Entity Type**: Private (Venture-backed; latest round Debt Financing in April 2025)
- **Headquarters**: Miami, Florida, United States
- **Founded**: 2018
- **Founders**: Ivan Soto-Wright, Victor Faramond

## Core Business
- **Primary industry/industries**: Fintech, Cryptocurrency, Web3 Infrastructure
- **Target customers (B2B, B2C, Enterprise, SMB, etc.)**: B2B (wallets, websites, apps, enterprises needing crypto on/off ramps) and B2C (individual users buying/selling crypto).
- **Mission or purpose statement**: "Help everyone own their digital future" and "bring the whole world into Web3."

## Products & Services
- **On-Ramp (Buy Crypto)**: Allows users to purchase crypto with credit/debit cards, Apple Pay, Google Pay, PayPal, Venmo, Revolut Pay, and bank transfers. Integrates into any app or website for a seamless user experience.
- **Off-Ramp (Sell Crypto)**: Enables users to sell crypto and withdraw fiat currency to their bank accounts or payment methods. Customizable SDK for business partners.
- **MoonPay Balance**: A custodial wallet that allows users to store funds and transact within the MoonPay ecosystem.
- **Enterprise & Web3 Infrastructure**: Provides smart contract tools, NFT checkout, and stablecoin management APIs for brands and enterprises to build and manage Web3 experiences.

## Market Standing
- **Valuation/Market Cap**: Not publicly disclosed.
- **Key Metric**: Total Funding of **$1.04 billion** (across 7 rounds) and estimated **Annual Revenue of $150 million**.
- **Notable Investors/Partners**: Tiger Global Management (led Series A), Galaxy Digital (led 2025 debt financing), Coinbase Ventures, Google (via partnerships, not publicly confirmed as direct investor), and many others. Partners with 500+ companies and 300+ wallets/apps.
- **Growth Signals**: 30 million customers served. Workforce of ~400+ people from 125+ nationalities across 9 key locations. Yearly headcount growth of +17% (YoY). Powering infrastructure for major brands and is fully licensed in the U.S., UK, EU, Canada, and Australia. Ranked on the Forbes Fintech 50 list.

## Competitive Advantages
- **Licensed & Regulated**: Highly regulated and compliant in multiple global jurisdictions, offering a trusted on/off-ramp for mainstream adoption.
- **Broad Payment Method Support**: Integrates with nearly every major payment method, lowering the barrier to entry for users.
- **Enterprise-Grade Infrastructure**: Trusted by some of the world's most icconic brands for their Web3 experiences.
- **Global Reach**: Availale in 160+ countries, with localized payment methods.

## Strategic Focus
- **Web3 Adoption**: Continuning to build products that bridge the gap between traditional finance (TradFi) and decentralized finance (DeFi).
- **Stablecoin & Institutional Growth**: Recent $200M debt facility from Galaxy Digital signals a push into stablecoin infrastructure and more institutional-grade products.
- **US Compliance & Expansion**: Acively hiring for regulatory compliance specialists and focusing on state-level licensing within the US.
- **Product Innovation**: Imroving wallet, smart contract, and developer tools to remain the go-to infrastructure layer for the crypto economy.

## Why Work Here
- **Culture & Values**: Emphasizes a "Kaizen" (continuous improvement) mindset, autonomy ("Own It"), and a strong sense of ownership. Describes itself as having an "innovation-led culture" with extreme ownership.
- **Remote/Hybrid Policy**: Global-first mindset. Offers Remote, Hybrid (e.g., New York), and Office-based roles across 9 key locations (Miami, London, Bangalore, etc.).
- **Perks & Benefits**: Equity package, comprehensive private healthcare, annual training budget, home office allowance, and 3x/year offsites for Product, Engineering, and Data teams.
- **Growth & Impact**: Work with a global team of experts. Strong emphasis on career autonomy and learning by doing.

## Sources
1. [moonpay.com/careers](https://www.moonpay.com/careers) - Company culture, values, and benefits.
2. [linkedin.com/company/moonpay](https://www.linkedin.com/company/moonpay) - Employee count, headcount growth, funding details, and recent hiring trends.
3. [cbinsights.com/company/moonpay](https://www.cbinsights.com/company/moonpay) - Products, competitors, and financial overview.
4. [support.moonpay.com](https://support.moonpay.com/en/articles/380731-what-is-moonpay) - Official product description and purpose.

## Other roles at MoonPay

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- [Product Manager, Crypto Asset Management](https://feeny.ai/job/product-manager-crypto-asset-management-moonpay-london-y85mhza33ww0) — London, United Kingdom
- [Deputy Treasurer](https://feeny.ai/job/deputy-treasurer-moonpay-new-york-ba2qxdbaj5ex) — New York, NY
- [Senior Product Manager, KYB - MoonPay Enterprise](https://feeny.ai/job/senior-product-manager-kyb-moonpay-enterprise-moonpay-london-qa3vf6c696ez) — London, United Kingdom
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