Alexandre Lang
Senior Data Engineer @Colliers
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WORK HISTORY
Senior Data Engineer @Colliers
Senior data engineer building the group\'s first data platform from scratch, starting with Finland as pilot. Platform now rolling out to France and the UK- Built the core cloud infrastructure on GCP (Cloud Run, Composer, BigQuery): from zero to production, integrating ~10 data sources. Data used by Colliers Finland directors for decision-making- Implemented the group\'s first CI/CD pipelines on Azure DevOps, setting the standards for future country rolloutsTech: GCP, BigQuery, Composer (Airflow), Python, Cloud Run, Azure DevOps
EDUCATION
École de Journalisme et de Communication d'Aix-Marseille
Licence, information et communication
University of Colorado Boulder
Master's degree, Data science
ABOUT ALEXANDRE LANG
I build data platforms for companies that don\'t have one yet — and fix the ones that aren\'t working.As a freelance Lead Data Engineer, I currently work with LVMH and Colliers on GCP-native architectures.At LVMH, I built a transaction platform processing +30M€/year from scratch and refactored the real-time backend feeding their Customer Data Platform.At Colliers, I helped design and implement the group\'s first data platform on GCP, now scaling from Finland to France and the UK.What I do best:→ Build data platforms from zero to production (GCP, BigQuery, Airflow, Terraform)→ Design real-time data architectures powering Customer Data Platforms→ Optimize cloud costs and pipeline performance (routinely cutting costs and processing times by 50-90%)→ Deliver business-critical systems used by C-level executives and department headsTech stack: Python · SQL · GCP · BigQuery · Cloud Run · Composer · Airflow · PubSub · Snowflake · DBT · Terraform · Docker · Kubernetes · Azure · PostgreSQL · Polars · Flask
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