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Dan B.DB

Dan B.

Data Scientist | Data Analyst | SQL/ Python/ BI

€350/day
Paris, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Dan

Hello, I'm Dan, a data analyst for 4 years, specializing in performance marketing. I help acquisition, product, and management teams understand what the data truly reveals and transform it into quick decisions: where to invest the media budget, which levers improve CPA, which content retains users, which segments perform.

What I do most often

Analysis and optimization of PPC campaigns (Google Ads, Bing): I retrieve performance data, clean it, segment it, and propose concrete actions to improve ROI, CTR, and CPA.

Creation of decision-making dashboards in Tableau or Quicksight to track acquisition, retention, or monetization KPIs.

Product / Gaming Analyses: Understand player/user behaviors, identify profitable cohorts, track key events, and propose optimizations.

Experiments & A/B tests: design, implementation, statistical analysis, recommendations.

First level of data science for marketing: scoring, clustering (K-Means, DBSCAN), prediction models (Logistic Regression, Random Forest, XGBoost) when the data justifies it.
  • French

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • Kissterra
    Business Data Analyst
    January 2026 - Today (7 months)
    Designed and optimized large-scale SQL data models and analytical frameworks (CTEs, window functions, advanced aggregations) to process and analyze millions of marketing and bidding events across user acquisition funnels. Developed and deployed machine learning models to predict Earn Per Shopper (EPS), conversion probability, and acquisition performance, enabling more accurate bidding and traffic allocation decisions. Developed automated recommendation and decision-making systems for bid optimization, leveraging key business KPIs such as ROAS, CPB, CTR, BR, QR, and conversion trends to dynamically adjust acquisition strategies. Performed deep-dive multidimensional analyses across traffic sources, user segments, states, devices, and bidding channels to identify high-value opportunities and reduce inefficient media spend. Created scalable monitoring systems and executive dashboards using SQL, Looker, Tableau, and QuickSight, enabling real-time visibility into marketing performance and operational KPIs.
    SQL Python Tableau Software Looker Studio AWS SageMaker
  • MoonshotMarketing
    PPC & Data Analyst
    July 2022 - October 2025 (3 years and 3 months)
    1 Data-Driven Campaign Optimization Leverage in-depth performance data to continuously optimize PPC campaigns across Google Ads and Bing, focusing on improving ROI, CTR, and CPA through actionable insights. 2 Advanced Analytics & Reporting Build and maintain detailed performance dashboards using tools like Quicksight, Tableau, and Excel to monitor KPIs and guide decision-making. 3 AI-Powered Performance Enhancement Utilize machine learning tools and automation features to enhance bidding strategies, audience targeting, and budget allocation. 4 A/B Testing and Experimentation Design and analyze A/B tests on ad creatives and landing pages to validate hypotheses and drive measurable improvements in user engagement and conversions. 5 Cross-Team Collaboration on Data Strategy Collaborate with product, content, and designs teams to align data insights with content strategy and landing page performance, ensuring consistent messaging and improved user retention.
    BI Strategy Data Visualization Data Mining QuickSight Google Ads
  • JoyvooGaming
    Business Intelligence
    January 2021 - January 2022 (1 year)
    1 Player Data Analysis: Collect, process, and analyze player data to understand their behaviors and preferences. 2 Report and Dashboard Creation: Use BI tools to develop reports and interactive dashboards that visualize game performance and player trends. Python SQL 3 Decision Support: Provide data-driven insights to development and marketing teams to improve game and monetization strategies. 4 User Experience Optimization: Identify opportunities to improve the user experience Tableau/ Quicksight based on collected data and propose concrete solutions. Excel/ Office 5 KPI Tracking: Monitor key performance indicators (KPIs) to evaluate the success initiatives and marketing campaigns.
    SQL Python Tableau Software ETL Data Visualization

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Education

  • Industrial & Management Engineer
    TL University
    2021
    Industrial & Management Engineer
  • Data Science Engineer
    BarIlanUniversity
    2022
    Data Science Engineer

Certifications

  • IBM Data Science
    IBM
    2021
    Data Visualization Automation Data Analysis MySQL Machine Learning Data Science Data Engineer Big Data Data Mining Deep Learning

Skill set

Categories