Senior Data Scientist

Down, Dating App

Internet und Informationstechnologie

10-50 Mitarbeiter

Led deep-dive analyses behind product and growth decisions: 53% of new VIP buyers end their first week without a two way conversation; a new woman comes back the next day after a first conversation, not a first match (68.4% vs 28.9%); matches go silent from friction, not the people (56.2%). The inbox changes I recommended shipped.
Ran a photo-attribute study on 77k men (Gemini-labelled photos): effort shots convert best (gym 11.6% vs 8.0% average). Findings set the ruleset for the Smart Photos experiments.
Built two trust and safety models: a bad-actor detector (scores accounts on their first 5 minutes; auto-bans right ≥85%) and an underage-user detector (83% of flags correct). Together they cut manual review from 6.5% to 4.5% of new accounts.
Led the move to dbt and retired the legacy Airflow jobs. Added a daily warehouse-vs-production reconciliation alert that catches tracking losses within a day, and cut the experiment dashboard’s cost 98.6% ($19.64 → $0.27 per load). Coordinated 2 part-time analysts and onboarded new hires.
Ran the data side of ~90 A/B tests, from launch checks to ship-or-stop recommendations. Built the experiment tooling and ran the review meetings.

Principal Online Marketing Specialist — User Acquisition Automation

Gen™, Antivirus Software Company

Internet und Informationstechnologie

1000-5000 Mitarbeiter

Automated weekly install forecasts and return-on-ad-spend (ROAS) reports using Python and BigQuery, combining Adobe Analytics, data.ai and internal databases; delivered in Power BI, saving 20+ hours/week.

Lead Data Analyst

Carma Project, Startup

Sonstiges

10-50 Mitarbeiter

Full-time until company bankruptcy in Apr 2023; continued as freelance consultant through Feb 2024.

Built and maintained automated data pipelines using GCP and Airflow, combining the company’s warehouse data with public geographic data.
Designed interactive dashboards and ran analyses to support the team’s decision-making.
Reduced client presentation prep time by over 80% through dashboard standardization and automated reporting.
Deployed an ML model on GCP predicting the number of cars needing an airbag-recall replacement per zip code — from population density, state, and how much of the area was already covered — for operational planning.
Supervised a part-time junior analyst for 7 months, providing mentoring and quality assurance.

Attribution Data Scientist

Entain

Internet und Informationstechnologie

>10.000 Mitarbeiter

Developed and maintained machine learning models for acquisition and retention (data-driven attribution vs. customer lifetime value), owning them end to end — from feature engineering to deployment.
Automated campaign optimization workflows using model outputs to simulate and compare budget scenarios.
Implemented Marketing Mix Modeling (MMM) to measure how much offline marketing contributes to new-user acquisition.
Built and maintained marketing performance dashboards (CPM, CPC, CAC, ROAS) using Google Analytics, Fivetran, and Appsflyer data; automated report generation and alerting.
Designed and implemented an A/B testing algorithm to assess campaign performance and user behavior.
Awarded a 33% performance-based salary increase during tenure.

Data Scientist

N5 Now, Fintech SaaS Provider

Banken und Finanzdienstleistungen

10-50 Mitarbeiter

Built and deployed models for Superdigital (Santander Brazil) predicting which clients would leave, what each client is worth over time, and how to segment them — with results integrated into SQL-based dashboards.
Developed a proof of concept to optimize how marketing budget is split across campaigns, improving targeting precision and efficiency.
Enriched customer segmentation using public socioeconomic data and behavioral signals from Google Analytics.
Mentored an intern, ensuring delivery of high-quality outputs and supporting professional development.

Senior Data Scientist

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