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Salary: EUR 95,000 - 125,000 / annual
Crossmint is a leading all-in-one stablecoin and wallet infrastructure platform enabling fintechs, enterprises, and agentic platforms to integrate stablecoin rails with speed, compliance, and scale. The company powers stablecoin flows moving billions across cross-border remittances, global payroll, and digital UBI programs, serving 150+ countries across 50+ blockchains. Trusted by clients including MoneyGram, Western Union, Paga, and nation states like the Marshall Islands. Crossmint is MiCA-authorized, PSD2-licensed, and SOC2 Type II certified.
You will be Crossmint's first dedicated Anti-Fraud Engineer, building the decisioning layer that protects all product flows: remittances, payroll, on/offramps, card rails, and agent-initiated payments. This is a hands-on role with direct ownership of fraud loss metrics and measurable impact. You will report to the Engineering Manager for Identity, Compliance & Risk and collaborate daily with Risk Operations analysts, Compliance, Legal, Security, and product teams.
Key responsibilities include:
**Own fraud decisioning:** Build and own services that score and decide onboarding attempts, stablecoin transfers, on/offramp orders, and card transactions. Convert analyst judgment into production rules and models with clear thresholds, versioning, backtesting, and fast rollback paths. Build signals for device, behavior, velocity, counterparty, and graph relationships across clients and wallets. Own and publish catch rate, false-positive rate, and fraud loss per product line.
**Detect and respond:** Build detection for account takeover, mule networks, first-party fraud, synthetic identities, refund and promo abuse, and agent-initiated payment abuse. Move from new fraud pattern to live control same-day when clear. Lead the engineering side of fraud incidents: contain loss, find root cause, close product holes. Participate in on-call rotation.
**Give Risk Operations leverage:** Build tools analysts work in—case management, queues, reason codes, rule tuning. Decide what to build vs. buy across device intelligence, transaction monitoring, screening, and case management. Produce evidence for Compliance filings, audits, and supervisory review as system output rather than manual exercise.
**Stay close to product:** Review design documents for new products and identify fraud surfaces before launch. Work with client-facing teams on client fraud problems. Keep current on fraud tooling, onchain tracing, and AI-native workflows.
Crossmint operates under MiCA, DORA, SOC 2, and PSD2 regulations, so controls carry both commercial and licensing consequences. This role has a loss line attached—you will know what fraud costs, which controls moved that number, and which good customers were blocked.
**Requirements:**
- 5+ years building production systems, with 3+ years focused on fraud, risk, or trust and safety
- Track record at a company where fraud carried real cost: payments, card issuing/acquiring, banking, lending, marketplaces, or crypto exchange. Must be able to articulate which losses were cut and how impact was proven
- Hands-on ownership of a rules engine or model-serving path in production, plus the data pipeline behind it
- Strong programming skills in at least one modern language (TypeScript ideal)
- Fluency in fraud metrics and trade-offs: catch rate, false-positive rate, precision at threshold, loss rate
- Comfort with SQL and running independent analysis
- Judgment to size controls against loss prevented and friction added
- Deep familiarity with current AI and agentic tools, and perspective on how they change fraud work
- Bachelor's degree in Computer Science or equivalent professional experience
**Strong plus:**
- Experience with stablecoins, wallet infrastructure, or blockchain payment rails, including onchain tracing and address risk
- Card scheme fraud experience: chargebacks, dispute and monitoring programs, 3DS, SCA exemptions
- KYC/KYB onboarding abuse and synthetic identity detection
- Commercial fraud and monitoring platforms experience with clear view of ROI limits
- First fraud engineer role or early in risk function
- Direct experience with BSA/OFAC, PSD2/SCA, MiCA, DORA, or SOC 2
