Juan castro feijoo

As Product Lead in Stori’s Fraud & Risk team, I drive the strategy and execution of initiatives that strengthen authentication, reduce fraud, and improve authorization performance. I lead the end-to-end product roadmap for our 3-D Secure (3DS) ecosystem, optimizing ACS performance, authentication flows, challenge rates, and OTP reliability while ensuring Mastercard compliance.

I work closely with

Developed a comprehensive product roadmap specifically addressing risk management, outlining key milestones and strategies to proactively address emerging threats and challenges in the dynamic landscape of fraud prevention. Conducted A/B testing to refine product features and enhance user experience, leveraging insights to iterate on functionalities and improve overall performance.
Investigated ma

As a Fraud Prevention Leader specializing in small and medium-sized sellers, I led the definition and implementation of risk strategies for onboarding and the KYB of new merchants. My focus was on building comprehensive fraud prevention solutions, where I outlined business limits and developed models and rules to mitigate associated risks. I also had to choose the KYB tool for the compliance, AML

I worked closely with the Data Science team to develop machine learning models for Latin America, covering countries such as Brazil, Chile, Colombia, Peru, Argentina, and Mexico. Together, we successfully designed and built unsupervised models that provided valuable insights to enhance product performance in the real estate and automotive industries. As part of the team, we successfully implemente

As a fraud prevention specialist, I have been responsible for prioritizing solutions and machine learning models in line with the product roadmap, with the goal of mitigating risk and enhancing the overall performance of the company. Additionally, I have monitored trends and key performance indicators (KPIs), identifying new metrics to improve fraud prevention efficiency.

I have conducted root ca

As a Semi Senior Analyst in the fraud prevention area, I played a role in coordinating the deployment of solutions to protect the customer experience, using advanced fraud detection systems such as Sift Science, Emailage, and the company's internal systems.

I collaborated in calibrating our fraud detection systems to stop potentially fraudulent payments and worked on the continuous improvement of

As a Fraud Prevention Analyst, I handled large volumes of data to track and detect outliers and new risks in online payments. I implemented and maintained fraud detection rules to identify suspicious behaviors and took action against irregularities.

I monitored and reported any suspicious behavior in online payments, working to mitigate any potential threats. I collaborated in calibrating fraud d

As an Accounting and Controlling Analyst at Nestlé, I was responsible for ensuring the accuracy and completeness of the company's financial records. In this role, I performed a range of tasks, including reconciling accounts, analyzing financial data, and reporting to the company's Swiss headquarters.

I was also responsible for managing fixed asset entries, which involved tracking the company's ph