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Mariana Grachinski Frasson
Open to opportunitiesSenior Product Analyst, Payments
Senior Product Analyst shaping payments analytics, ETL, and A/B testing insights.
BrazilSenior Product Analyst, Payments at Upwork
About
I’ve spent the past 9 years working with data in the tech industry across analytics, credit modeling, and recommendation systems. At Upwork, I’ve led the end-to-end Payments Datamart architecture restructure, migrating and standardizing metrics and data sources while also building ETL pipelines for Payments P&L (Revenue and Cost) analysis.
I built confidence interval calculations in Looker to flag outliers in weekly metrics and automated Weekly Business Review reporting pipelines using Claude. I also design and analyze A/B tests for the Payments platform—defining sample sizes, MDE, test duration, and business impact—while serving as lead analyst across discovery, success metrics, monitoring, and executive readouts for launches like Venmo implementation, multi-currency support, and new user experiences for Earnings and Withdrawal.
Experience
Senior Product Analyst, Payments
Restructured the Payments Datamart architecture and developed confidence interval calculations in Looker to automate outlier detection. Designed and analyzed A/B tests and built ETL pipelines for Payments P&L analysis.
LookerETLA B TestingSQLPythonClaudePaymentsData MartsAnalytics
Data Scientist, Recommendations
Increased email click-through rate by 10% by training and deploying a deep learning two-tower content-based recommendation model. Also trained a collaborative filtering model and led planning and hiring.
Deep LearningRecommendation SystemsPython
Education
University of São Paulo
Bachelor of Science in Statistics from the University of São Paulo from 2018 to 2021.
Bachelor of Science in Statistics from the University of São Paulo from 2018 to 2021.
Udacity
Nanodegree in Data Science from Udacity in 2019.
Nanodegree in Data Science from Udacity in 2019.
Tera
Bootcamp in Data Science from Tera in 2019.
Bootcamp in Data Science from Tera in 2019.