[Hiring] Senior Anti-Fraud Analyst @Sumsub

Role Description

We are looking for a Senior Anti-Fraud Analyst to improve fraud detection accuracy and signal quality across Sumsub products. This is a hands-on role working with live production data. You will investigate fraud patterns, test and tune detection logic, and determine which signals, rules, and models can reliably identify suspicious activity.

• Explore live data to identify emerging fraud patterns, anomalous activity, and gaps in existing detection logic.
• Develop and tune fraud detection approaches using rules, supervised and unsupervised models, anomaly detection, and link-based analysis.
• Evaluate the accuracy, completeness, and predictive value of fraud signals and identify where they need to be fixed or improved.
• Analyse client traffic and alert flows, measure false positives and missed fraud, and recommend concrete improvements.
• Build and optimise baseline rule sets and proactive alerts for common and emerging fraud scenarios.
• Turn analytical findings into clear product recommendations and support complex, data-intensive client cases when needed.

Qualifications

• 4+ years of experience in anti-fraud, risk analytics, applied data science, or another analytical role involving complex data and anomaly detection.
• Strong knowledge of exploratory data analysis and classical machine learning, including supervised and unsupervised approaches.
• Practical experience with anomaly detection, clustering, and link-based or graph analysis.
• Hands-on experience in fraud prevention or fraud analytics.
• Strong Python and SQL skills.
• Hands-on experience with ClickHouse, Trino, Superset, dbt, DataHub, or comparable analytics tools.
• Strong judgement when working with raw and imperfect data: you can identify data-quality issues, bias, leakage, overfitting, and misleading model results.
• Ability to evaluate detection quality through false positives, false negatives, and other relevant metrics.
• Ability to explain complex findings through clear logic, numbers, and concrete examples.
• Confident but critical use of AI-assisted analytical tools, including the ability to validate their outputs.
• Fluency in English.

Benefits

• Remote-first, trust-based culture.
• Work from the place that works best for you. No mandatory office days, no attendance trackers.
• True flexibility in working hours.
• Your birthday is a holiday here, plus 10 personal days each year, seven sick days without paperwork, and extra time for Christmas and New Year.
• Work that matters, contributing to a secure, accessible, and inclusive digital world.
• Fair and transparent pay, benchmarked to the market.
• Truly global team with opportunities to run campaigns across borders, cultures, and languages.
• Clear goals, open feedback, and personal development plans with learning opportunities.
• Financial bonuses for marriage and welcoming a new baby.
• Team offsites fully covered for collaboration and recharge.
• Access to the tools and hardware needed to do your work well.
• Friendly and open work culture that welcomes individuality and different perspectives.

Company Description

Sumsub is the first AI-powered trust infrastructure for compliance operations at scale. It connects identity and business verification, fraud prevention, transaction monitoring, and risk workflows, helping teams reduce manual work and enter new markets.

• Trusted by over 4,000 clients across various sectors including financial services, crypto, mobility, trading, marketplaces, education, and iGaming.
• Recognized as a Great Place To Work® in the US and rated 4.3 out of 5 on Glassdoor.
• 92% of employees are proud to be Sumsubers, and 90% say their work is interesting and challenging.