Card Issuing Anti-Fraud Analyst

About Unlimit

Unlimit is the global fintech powerhouse behind the world’s largest proprietary payments infrastructure.

Founded in 2009, Unlimit operates across 17 global offices with 700+ experts, seamlessly integrating 1,000+ payment methods into a single platform. From London to São Paulo, we empower businesses to scale across borders with a unified suite of financial tools — including payment processing, alternative payment methods, multicurrency business accounts, card issuing, banking-as-a-service, and crypto on- and off-ramps.

Our mission is to break down financial barriers and enable seamless money movement across borders. We give forward-thinking businesses the tools to accept, send, and manage payments effortlessly, wherever they operate.

About the role:

This role will be at the forefront of the Company’s fraud prevention efforts working effectively to identify anomalies, prioritize initiatives, and develop scalable solutions.

Part of this role is also to facilitate the Company’s growth by scaling internal processes and focus on continuous optimization and automation.

• Full-cycle ownership of fraud investigations: Manage investigations end-to-end: from initial alert/trigger through analysis, decisioning, case resolution, and final reporting.
• Development of antifraud logic (Acquiring & Issuing) Design, implement, and optimize fraud detection and prevention rules/strategies across acquiring and issuing flows.
• Monitoring & detection Continuously monitor transaction activity, identify anomalies, emerging fraud patterns, and suspicious behavior.
• Case analysis & decisioning Perform deep-dive analysis of flagged transactions, merchants, accounts, and payment instruments; recommend actions (block, allow, escalate).
• Rules & strategy optimization Tune fraud rules, thresholds, scoring models, and risk parameters to balance fraud prevention and approval rates.
• Chargeback & dispute support Contribute to fraud-related dispute analysis, root cause identification, and prevention measures.
• Data analysis & reporting Prepare regular/ad-hoc reports on fraud trends, losses, false positives, and control effectiveness.
• Cross-functional collaboration Work closely with Risk, Compliance, PSP/Payments, Underwriting, and 8Engineering teams on fraud mitigation initiatives. Incident & escalation handling
• Support urgent fraud incidents, large-scale attacks, and high-risk events.
• Process improvement & automation Identify gaps, propose enhancements, and participate in automation of fraud controls and workflows.

• A minimum of +3 years of working experience at end-to-end antifraud analysis/investigation/prevention/detection/handling for card issuing, bank account payments;
• Good knowledge of card schemes associations risk management guidelines and requirements (e.g. Mastercard, Visa, UnionPay);
• Ensure knowledge of current fraud patterns and trends;
• Excellent command of English, other languages are an asset;

• Strong analytical capabilities with the ability to evaluate and interpret complex data;
• Extremely detail-oriented, organized and have the ability to multitask.

• Attractive monthly salary paid in line with experience
• Vacation, sick, and paid holidays
• Full-time: 5/2 (Saturday and Sunday days off)
• Modern workplace with all necessary equipment 
• A team of top international professionals to learn from
• Multicultural working environment

Join Unlimit Team now!

Unlimit is an equal opportunity employer. We believe passionately that employing a diverse workforce is central to our success. We make recruiting decisions based on your experience and skills. We welcome applications from all members of society irrespective of age, sex, disability, sexual orientation, race, religion or belief.