Open to opportunities

Wellinson Costa dos Santos

@wellinsoncostadossan

Senior product & data analyst. 10 yrs in experimentation, pricing and unit economics across iGaming, fintech and marketplaces.

Brazil

Message

What I'm looking for

Senior/lead analytics role, remote, where I own experimentation and product/revenue questions end to end and my analysis changes decisions, not just reports. Ideal: a growing product company in fintech, marketplaces, iGaming or consumer apps.

Senior product analyst with 10+ years turning behavioral, payments and customer data into product decisions across consumer marketplaces, iGaming, fintech and retail. Currently leading Performance & Product Analytics for Betfair Brazil (Flutter Entertainment), reporting to UK leadership.

Own product measurement end to end: define metrics and guardrails, map funnels from first visit to repeat behavior, design and read A/B tests with control groups, and use difference-in-differences when randomization is impractical, stating its limits. Hands-on in SQL, AI-assisted in analysis and documentation (always validating outputs), and experienced working remotely with distributed teams across Europe and Latin America (GMT-3).

Experience

Work history, roles, and key accomplishments

Current

Analytics Manager

Current

Flutter Entertainment

Mar 2026 - Present (8 months)

Hands-on lead for Performance & Product Analytics at Betfair Brazil, reporting to UK leadership. Read payment-journey (+2.3pp conversion, rolled out) and Bet Builder (+25% expected revenue) tests; found an RTP pricing test never delivered its treatment and redesigned it with an A/A check and diff-in-diff. Built a high-value-customer experimentation programme. SQL/Python daily; manage 2 analysts.

SQL A B Testing Difference In Differences GA4 Experimentation Product Analytics Funnel Analysis Retention Analytics

Analytics Lead

Mercado Livre

Apr 2025 - Feb 2026 (10 months)

Senior individual contributor in the Planning & Performance team of VIS Motors, a two-sided automotive marketplace. Partnered with VPs and Product leaders across Brazil, Argentina and Chile.

SQL Churn Modeling Competitive Intelligence Marketplace Analytics Funnel Analysis Data Storytelling

Analytics Manager

Creditas

Mar 2021 - Feb 2025 (3 years 11 months)

Led analytics for the Benefits business unit (B2B payroll-linked credit), managing up to 5 analysts and partnering with Product, Credit/Risk, Engineering and Commercial across Brazil, Mexico and Spain.

SQL A B Testing Difference In Differences Propensity Modeling Funnel Analysis Unit Economics Data Storytelling

Senior Data Analyst

Creditas

Jan 2020 - Feb 2021 (1 year 1 month)

Built a predictive model classifying contracts by complexity, increasing legal analysis throughput by 10% while improving SLA reliability. Developed KPI frameworks and delinquency stress-testing models.

SQL predictive modeling KPI Frameworks Performance Testing Data Analysis

Data Analyst

Grupo Avenida

May 2017 - Jan 2020 (2 years 8 months)

Designed an automated cashback (loyalty) programme validated with cohort analysis and an A/B test, lifting second-purchase conversion from ~8% to ~14%. Built RFM customer segmentation for targeted CRM campaigns.

SQL A B Testing Cohort Analysis RFM Segmentation CRM Analytics Cashback Loyalty Programs

Education

Degrees, certifications, and relevant coursework

FIA Business School

Advanced MBA, Analytics & Artificial Intelligence

2024 -

Pursuing an Advanced MBA in Analytics and Artificial Intelligence, expected to complete in 2026.

Universidade Federal de Campina Grande

Bachelor of Science, Electrical Engineering

2008 - 2015

Bachelor of Science in Electrical Engineering from the Universidade Federal de Campina Grande, completed in 2015.

Colorado State University

Exchange Program, Electrical and Computer Engineering

2012 - 2013

Activities and societies: Science Without Borders scholarship; programme with Raytheon Missile Systems

Exchange year in Electrical and Computer Engineering, supported by the Science Without Borders scholarship, including a programme with Raytheon Missile Systems.