Web3 Analyst Python Jobs

About MoonPayHi, we’re MoonPay. We’re here to onboard the world to the decentralized economy by making digital money move as universally and effortlessly as the internet.Why?Because crypto, stablecoins and blockchain aren’t just technologies. They’re tools for global financial empowerment. They give people and businesses more control over their money, their digital assets, and their future, opening access to legacy financial systems that have been out of reach for many.What we doMoonPay is a unified payments platform for digital currency. We make it easy for anyone, anywhere, to buy, sell, swap and pay in digital currencies as easy as sending an email. That simplicity is intentional, our focus is reducing complexity so people can participate confidently, without needing to be crypto experts. We power the entire flow between fiat and crypto end to end, with compliance, identity checks, fraud prevention, and settlement all built in. This end-to-end approach reflects how we work internally: with accountability, rigor, and trust built into everything we ship.Proven at scaleTrusted by over 30 million customers and over 500 ecosystem partners, our secure, enterprise-grade platform is driving mainstream crypto adoption worldwide. Behind those numbers are millions of real people and organizations relying on MoonPay every day. We collaborate with innovative brands and projects to build secure, scalable solutions for a blockchain-powered future. This is an opportunity to help shape systems, not just scale them. And we’re committed to doing it right. Fully licensed in the U.S. and regulated across the UK, EU, Canada, and Australia, because trust and compliance are non-negotiable. But we’re just getting started. We’ve launched a consumer app that makes crypto accessible, intuitive, and usable for everyone, and it’s growing fast. We’re iterating every day to make it the best it can be. If you believe financial freedom should be for everyone. If you believe in building a fairer, more open financial system - we want you with us. To build systems that benefit all, we need contributions from all, regardless of background. Come build the future of payments and the decentralized economy with MoonPay. Let’s make financial freedom and autonomy the new normal.

About The Opportunity

This is an opportunity for an experienced Fraud Analyst to play a critical role in protecting MoonPay and its users from fraud threats in the dynamic, fast-evolving cryptocurrency landscape.

You’ll sit within our Fraud Investigations team, leading complex investigations, managing and tuning fraud detection rules, and acting as an incident commander during live fraud attacks. You’ll own the quality of our fraud operations by running QA on our BPO partners and building AI-powered agents that scale our detection and response capabilities. At your core, you’re an incident responder focused on mitigating immediate impact from fraud while ML and Product build scalable long-term solutions and controls.

This role requires someone with strong analytical abilities, excellent attention to detail, and a deep interest in financial crime prevention in the crypto domain. You’ll work cross-functionally with Compliance, Product, Engineering, Data and ML teams to execute fraud prevention strategies, analyze fraudulent patterns, and support the broader fraud risk framework—all while maintaining SLA and precision standards.

If you thrive in a fast-paced, high-growth environment and want to have a direct, measurable impact on fraud losses, this role is for you.

What You Will Do

Incident Management

• Act as an incident commander during live fraud attacks, coordinating containment and response across teams.

• Lead complex fraud investigations, identifying root causes and recommending permanent fixes to prevent recurrence.

• Assess the severity of fraud cases and escalate high-risk cases to the Manager or Compliance in a timely manner.

• Execute rapid containment actions (blocks, freezes, restrictions) to minimise fraud exposure during active incidents.

Rule Management

• Review, build, implement, and tune fraud detection rules to optimise accuracy and minimise false declines.

• Backtest rule logic against historical data to validate effectiveness before deployment.

• Monitor rule performance in production and iterate based on real-time data and investigation outcomes.

• Own the False Decline Rate for rules implemented by the Fraud Investigations team, keeping it within acceptable thresholds.

Quality Assurance & BPO Oversight

• Conduct quality assurance reviews on BPO fraud analyst casework, assessing both process adherence and decision-making accuracy.

• Provide structured feedback and coaching to BPO teams to drive continuous improvement in investigation quality.

• Define and maintain QA scoring frameworks and calibration standards.

Agent Building & Automation

• Build, deploy, and QA AI-powered agents and automation workflows that enhance fraud detection and investigation efficiency.

• Identify opportunities to automate repetitive investigation tasks and scale the team’s operational capacity.

• Partner with Engineering, Data, and ML teams to translate investigative insights into scalable tooling and controls.

Cross-Functional Collaboration & Reporting

• Engage with Product, ML, Engineering, and Compliance teams to support investigations and contribute to fraud mitigation strategies.

• Provide support to internal teams raising fraud queries, acting as a subject matter expert on fraud risk.

• Ensure accurate and timely documentation of fraud cases, maintaining clear records for internal reporting and external audit requirements.

• Identify gaps in tooling or processes and provide actionable feedback to improve detection accuracy and investigation efficiency.

What You'll Need

• 3+ years of experience in fraud detection, prevention, and investigation, preferably in financial services, payments, or e-commerce.

• Demonstrated experience leading complex fraud investigations from initial alert through to root cause analysis and remediation.

• Hands-on experience building, implementing, and tuning fraud detection rules, including rule backtesting and performance management.

• Strong understanding of fraud typologies, attack vectors, and emerging trends in the crypto and digital payments space.

• Experience with data analysis tools and the ability to derive conclusions and recommendations from large datasets (e.g. SQL, Excel, or BI tools).

• Excellent critical thinking and risk assessment skills—you can evaluate the likelihood and impact of fraudulent activity under pressure and make sound decisions.

• Strong attention to detail with the ability to maintain accuracy and thoroughness in a high-volume, fast-paced environment.

• Clear, professional communication skills with the ability to write concise case notes, escalations, and cross-functional updates.

• A proactive, ownership-driven mindset—you identify problems, propose solutions, and drive them to completion.

Bonus Points

• Experience in the cryptocurrency or blockchain industry.

• Coding ability (e.g. SQL, Python) for data analysis, automation, or building investigative tools.

• Experience building or working with AI/ML-powered fraud detection systems or agents.

• Familiarity with blockchain analytics and on-chain investigation tools (e.g. Chainalysis, TRM Labs, Elliptic).

• Experience managing or providing QA oversight to BPO or outsourced operations teams.

• Knowledge of chargeback processes and card scheme fraud programmes.

BLOCK Values We’re looking for people who live our core values, those who strive for excellence and want to leave a lasting legacy on the global financial system. Our values:B - Be HungryL - Level UpO - Own ItC - Crypto CuriousK - KaizenResearch 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 learnt, diversity cannot.Benefits & Perks 💡💰Competitive salary package 🤝 Equity package: We believe financial freedom starts with our employees, so all employees have ownership at MoonPay📈 Pay for performance equity bonus: Those who drive outsized outcomes receive outsized rewards 🚀 Moonshot award. We honor exceptional impact - 10 employees twice a year, each earning a $250,000 equity grant.🏝 Unlimited holidays: We give you the autonomy to choose when to work (and when to switch off)🌍 Hybrid working schedule: Work fully remotely or your nearest Moonbase, the choice is yours 🩺 Private Healthcare benefits: To protect you and your loved ones 🍼 Enhanced parental leave: So you can spend more time with your loved ones without a second thought📚 Annual training budget: We support your training journey every step of the way 🪑 Home office setup allowance: Create the home office of your dreams 👛 Remote working allowance: Those working fully remotely get a little extra for utilities 💰 Monthly budget to spend on our products and zero fee crypto transactions: Cultivate your inner DEGEN 💰 Employee referral programme: Great people know great people, refer them to receive 10K in USDC ✈️ Regular remote company offsites: Meet your colleagues regularly for high impact in person sessions and hackathons 🚀 Working in a disruptive and fast-growing company where excellence is rewarded Commitment To DiversityAt MoonPay we believe that every voice matters. We strive to create a mindful and respectful environment where everyone can bring their authentic self to work, and experience a culture that is free of harassment, racism, and discrimination. That’s why we are committed to diversity and inclusion in the workplace and are a proud equal opportunity employer. We prohibit discrimination and harassment of any kind based on race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, protected veteran status or any other characteristic protected by law. This policy applies to all employment practices within our organization, including, but not limited to, hiring, recruiting, promotion, termination, layoff, and leave of absence. MoonPay is also committed to providing reasonable accommodations in our job application procedures for qualified individuals with disabilities. Please inform our Talent Team if you need any assistance completing any forms or to otherwise participate in the application process.We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.