Naaman Geffen Email & Phone Number

Amsterdam, North Holland, Netherlands

EMEA merchant fraud and issuing risk manager, I oversee merchant fraud and risk in the region▸ Responsible for all merchant fraud in EMEA - detection and prevention of fraud as well as presenting OKR in this regard to senior management▸Optimization of rules pertaining to merchant fraud▸ Creation of new tools to improve the way we perform merchant fraud reviews▸ Detection of several fraud rings while implementing preventative measures for the future

Amsterdam, North Holland, Netherlands

Global payment operations manager for Roku Pay▸ Developing multiple dashboards to track the transaction health of Roku Pay product▸ In charge and measuring the success of a new product offering that resulted in improved auth rates▸ Collaborating with product, engineering, and risk teams to mitigate emerging fraud patterns on the Roku platform▸ Continued OKR tracking and reporting systems, enhancing goal alignment and driving strategic decision-making for management

Amsterdam Area, Netherlands

▸ In charge of an extensive overhaul of our internal tooling for fraud detection▸ Running fraud monitoring by creating fraud detection tools and monitoring dashboards from scratch▸ Promoting innovation via tooling: Frameworks and tools to evaluate and measure the team's day-to-day work more efficiently▸ Leading a team of developers in the yearly hackathon: voted top 10 in our category

Israel

Senior Fraud & Research Analyst at Riskified (an eCommerce fraud protection solution for merchants with a chargeback guarantee)▸ Analyzing big data using R and SQL for fraud prevention purposes▸ Creating new features for ML models▸ Building an analytical framework for a new product offering▸ Reviewing fraudulent transactions▸ Researching and visualization of fraud patterns

Sensitivity analysis for public traded companies

Economist in charge of budgets of various real estate projects.Work with multiple stakeholders: bank employees, tenants and construction engineers.

Worked on the yearly wage report in the public sector.