Over Bruno
Frans
Tweetalig / moedertaal
Engels
Tweetalig / moedertaal
Werkervaring
- FreelanceFreelance Senior Data Scientist & Data Engineerseptember 2022 - Vandaag (3 jaren en 9 maanden)The Hague, NederlandData Engineering Projects (Several US-based clients)
- Built a full-stack AI CEO Intelligence Dashboard for a Shopify brand that combines a live executive dashboard with an AI analyst agent. The dashboard queries a BigQuery data warehouse in real time across revenue, marketing ROAS, customer cohorts, and product margins; the agent lets a CEO ask questions in plain English and returns SQL-backed answers via the Anthropic API
- Architected and built end-to-end analytics platforms integrating CRM, product, marketing, and transactional data using Airflow, DBT, Airbyte, Fivetran, BigQuery, and Redshift across multiple client engagements.
- Designed scalable data models and automated warehouse provisioning, delivering clean star schemas and aggregated layers powering Tableau dashboards, customer insights, and recommendation systems.
- Led data audits and cross-system reconciliation across Salesforce (system of record), Heap, HubSpot, and custom booking platforms, ensuring data quality and trust in downstream analytics.
Data Science Projects (Several US-based clients)- Built a churn prediction and intervention system using XGBoost (AUC ~0.73), combining ad-hoc behavioral analysis–driven feature engineering with SHAP-based feature selection to surface key churn drivers; insights powered targeted onboarding, re-engagement campaigns, and pricing nudges, driving a ~15% churn reduction in pilot cohorts.
- Designed a data-driven CRM segmentation and personalization strategy for a subscription food company by blending ML-identified churn predictors with business thresholds; delivered automated reactivation targeting and product recommendations, resulting in a 25% uplift in lapsed-customer reactivation.
- Developed a dynamic confidence-thresholding system for an image-based food classification pipeline, enabling real-time self-calibration while maintaining >95% accuracy; increased auto-classification rates from 18% to 40%, significantly reducing manual review costs.
- HelloFreshAssociate Director, Data ScienceRESTAURANTSdecember 2019 - Vandaag (6 jaren en 6 maanden)New York, Verenigde StatenBuilt Online Decision Tool Using Streamlit: built a marketing channel performance comparison tool (based on ROI) to help drive marketing spend across key channels.Built Brand Propensity Model for Customer Targeting: built an XGBoost classifier using demographics data (Experian) to predict highest propensity between 2 brands. Used the model to target households with direct mail.Designed Measurement for A/B tests: selected test / control geos using a KNN algorithm for a Facebook lift test. Built counterfactuals using regressions in the holdout to measure incremental liftBuilt Causal Models to investigate business trends (unprecedented growth peak, CAC Increases) using Linear Regressions and Double Machine Learning.Building Pipelines / ETL’s: automated the data flow from Machine Learning Models into interactive google sheets and S3 buckets using python and SQL on Databricks.Leadership: Led team of 4 data scientists dedicated to supporting the Growth Marketing Team / Built strategic roadmaps & OKR’s / Led Stakeholder Relationships / Prioritization / Led team on Machine Learning and Forecasting Projects
- E-Commerce ClientData Science ConsultantE-COMMERCEmaart 2022 - juni 2022 (3 maanden)New York, Verenigde StatenBuilt Predictive Machine Learning Models to Improve Conversion Rates- Defined the vision for the project, with projected steps, datasets needed and hypotheses- Exploratory Data Analysis: provided early insights on main conversion rate drivers and potential actionable levers- Predictive Models: built XGBoost model to predict conversion rate (CVR) impact from price changes. Delivered recommendation about the best approach to increase CVR by prioritizing high-impact products with high price elasticity
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Diploma's
- Machine Learning - Stanford OnlineCoursera2018