{"id":2495727,"url":"https://alion.io/job/crossmint-anti-fraud-engineer","title":"Anti-Fraud Engineer","company":{"id":614,"name":"Crossmint","domain":"crossmint.com","url":"https://alion.io/company/crossmint","size_band":"11-50","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":"senior","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"inferred_company_offices","remote_working_hours":null,"hiring_geo_confidence":"inferred","locations":["Madrid, Spain"],"countries":["ES"],"hiring_countries":["ES"],"hiring_countries_total":1,"salary":{"min":95000,"max":125000,"currency":"EUR","period":"year","gross":null,"usd_annual":139870},"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"SOC 2","optional":false},{"name":"SQL","optional":false},{"name":"TypeScript","optional":false}],"status":"live","first_seen_at":"2026-09-29T17:00:43Z","employer_posted_date":null,"last_verified_at":"2026-09-29T17:00:43Z","board_verified":false,"closed_at":null,"days_open":17,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":17},"description":"Crossmint is looking for an Anti Fraud Engineer to build fraud decisioning systems, detection controls, analyst tools, and loss measurement across financial-product flows.\n\nYou will build and own fraud decisioning services for onboarding, transfers, on/offramps, and card transactions. You will create signals, rules, models, detection controls, and analyst tools; measure fraud outcomes; respond to incidents; review product designs; and support compliance evidence and client-facing fraud investigations.\n\nResponsibilitiesBuild and own services that score and decide onboarding attempts, stablecoin transfers, on/offramp orders, and card transactions.\nTurn analyst judgment into production rules and models with thresholds, versioning, backtesting, and rollback paths.\nBuild device, behavior, velocity, counterparty, and graph-relationship signals across clients and wallets.\nMeasure and publish catch rate, false-positive rate, and fraud loss per product line.\nBuild detection for account takeover, mule networks, first-party fraud, synthetic identities, refund and promo abuse, and agent-initiated payment abuse.\nLead the engineering response to fraud incidents by containing losses, finding root causes, and closing product gaps.\nParticipate in the on-call rotation.\nBuild analyst tools including case management, queues, reason codes, and self-service rule tuning.\nEvaluate, select, and integrate fraud tooling and monitoring platforms.\nProduce system-generated evidence for compliance filings, audits, and supervisory review.\nReview new-product designs to identify fraud surfaces before launch.\nWork with client-facing teams on client fraud issues.\nKeep current on fraud tooling, onchain tracing, and AI-native engineering workflows.\n\nRequirements5+ years building production systems, including 3+ years focused on fraud, risk, or trust and safety.\nExperience reducing and measuring fraud losses at a payments, card, banking, lending, marketplace, or crypto-exchange company.\nHands-on ownership of a production rules engine or model-serving path and its supporting data pipeline.\nStrong programming skills in at least one modern language; TypeScript is preferred.\nKnowledge of catch rate, false-positive rate, precision at threshold, and loss rate.\nSQL and independent data-analysis skills.\nAbility to weigh fraud-loss prevention against customer friction.\nDeep familiarity with current AI and agentic tools and their impact on fraud.\nBachelor's degree in Computer Science or equivalent professional experience.\nExperience with stablecoins, wallet infrastructure, blockchain payment rails, onchain tracing, or address risk is preferred.\nExperience with card-scheme fraud, chargebacks, disputes, monitoring programs, 3DS, or SCA exemptions is preferred.\nExperience with KYC/KYB onboarding abuse or synthetic identity detection is preferred.\nExperience with commercial fraud and monitoring platforms is preferred.\nExperience with BSA/OFAC, PSD2/SCA, MiCA, DORA, or SOC 2 is preferred.\n\nBenefitsStock options for full-time employees.\nAccess to leading AI tools and subscriptions.\nUnlimited flexible PTO.\nParental leave program.\nFlexible work schedule.\nCompany laptop and allowance for necessary home equipment.\nDaily stipend for commuting to the office and/or meals.\nTwo company-paid off-sites each year.\nHealth and dental insurance.\n\nHiring processInitial video call with a team member.","description_format":"text","description_chars":3391,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Dental insurance","Flexible schedule","Parental leave"],"hiring_locations":[{"name":"Spain","iso":"ES","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Fraud Detection","Blockchain Infrastructure","Custom Software Development"],"lifecycle":[{"event":"open","at":"2026-10-14T04:23:17Z"}],"visa":[{"country":"US","licensed_sponsor":true,"evidence":"H-1B filings in 12 months: 1","filings_12m":1,"filings_prev_12m":2,"green_card_filings_12m":0,"median_offered_wage_usd":187500,"route":null,"cap_exempt":false,"checked_at":"2026-10-15T11:24:14+00:00","sources":["US Department of Labor: LCA disclosure data (H-1B, H-1B1, E-3)"],"filings_for_role_12m":0}],"liveness":{"score":10,"band":"cold","label":"Long shot","p_open":0.85,"p_active":0.326,"p_room":0.35,"age_days":16,"expected_fill_days":7,"reasons":["seen:16","win:tail"],"computed_at":"2026-10-16T05:45:00Z"},"pay":{"stated_usd_annual":139870,"is_top_pay":true},"html_url":"https://alion.io/job/crossmint-anti-fraud-engineer","json_url":"https://alion.io/job/crossmint-anti-fraud-engineer.json","meta":{"generated_at":"2026-10-17T02:37:36Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":3586,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-18T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":614},"rest":"https://alion.io/mcp/rest/get_company?id=614"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fcrossmint-anti-fraud-engineer"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fcrossmint-anti-fraud-engineer"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fcrossmint-anti-fraud-engineer"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/crossmint-anti-fraud-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fcrossmint-anti-fraud-engineer"}]}