Stefan Klisarov Email & Phone Number

Berlin, Germany

* Data Scientist at November (3+ years): Spearheaded the development and deployment of advanced machine learning models to enhance marketing and sales operations.* Analytical Expertise: Conducted comprehensive root cause analyses to drive continuous improvements and optimizations in company operations and marketing strategies.* Operational Impact: Directly enhanced company performance by integrating data-driven insights into core business strategies.

Amsterdam Area, Netherlands

Screen6 is an advertising technology startup based in Amsterdam. We provide the advertising industry cross-device user identification and are breaking new grounds in leveraging transparency and ad-targeting capabilities in a real-time online environment

Zwaagdijk-Oost

As a data scientist in the security team I was responsible for building and maintaining fraud detection and prediction systems.

Amsterdam Area, Netherlands

• Performed detailed KYC checks on existing and potential partners for guarantying their on-boarding• Negotiated and resolved contradicting relationships resulting in monthly savings of more than 6 digits• Coordinated cross-country changes in main company politics after designing new compliance policies• Developed client risk scorecards & analyzed performance• Delivered client performance trend analysis and forecasts, cross-checking with actuals and helped gain substantial insight in corporate customers’ behavior patterns• Led and analyzed team (of 10) and department performance, leading to major employment changes and increased number of closed deals by 15%

Amsterdam

• Developed and integrated fraud detection and preventive systems into existing such• Designed risk assessment frameworks and weighted scoring cards for the onboarding of new partners• Generated compliance guidelines for new partners and monitors adherence to these• Delivered regular operating performance reports• Designed and implemented training schemes, via expanding the existing knowledge base of the company on anti-fraud and AML

• Implemented KYC credit history checks and credit score analysis of SMEs • Developed and tested identity theft & fraud protection tools for some of the biggest Banking groups of EMEA• Developed statistical models for prediction and management of consumer behavior• Delivered recommendations for core anti-fraud product specifications for different clients• Developed KYC scorecards targeted at assessing credit history and fraud potential on WPS, SAS, CRM, SPSS

• Analyzed primary transaction data for indications of fraudulent transactions, money laundering and varied sorts of fraud and scams• Traced and recovered claims • Tracked user compliance with international standards (relevant ISOs, BASEL I, II, III, bank policies, etc)• Reviewed daily transaction flow from varied payment methods to assess fraud potential• Handled and analyzed chargeback and funds recovery requests for a portfolio of 150 large merchants

• Researched existing and potential client history, including credit scores and varied financial behaviours• Analyzed user behavior to assess financial and fraud risk and forecast value at risk• Monitored and assessed potentially fraudulent activities performed through different accounts• Was responsible for setting ceilings on accounts, lifting limitations and closing merchant accounts of the entire merchant flow

Bachelor, Social Sciences

Specialization, Methods And Statistics In Social Sciences

• Quantitative Methods • Qualitative Research Methods • Basic Statistics • Inferential Statistics in R

Specialization, Data Analysis And Interpretation

• Data management and visualization • Data analysis tools – Python and SAS • Regression modeling • Machine Learning