RANDRIAMBAHINY Herizo

I’m a results-driven Senior Data Engineer with 4+ years of experience designing and automating end-to-end data pipelines. I build scalable ETL/ELT systems and deliver actionable BI dashboards using Python, SQL, and Google BigQuery.

In my current work, I architect and maintain automated ETL pipelines using Python, Google Apps Script, and Make—replacing manual exports and ingestion tasks. I’ve also built and managed a unified BigQuery data layer aggregating data from 400+ Google Ads accounts (MCC & child), enabling cross-account performance analysis at scale.

I focus on measurable impact: I designed and deployed 10+ interactive Looker Studio dashboards used daily by senior leadership, replacing ad-hoc spreadsheet reporting and cutting report preparation time by ~60%. I also implemented real-time email alerting with custom KPI thresholds for anomaly detection without manual monitoring.

Beyond engineering, I bring strong deployment and analytics instincts from administering Google Workspace environments and supporting automation workflows via REST APIs and webhooks. My background in statistical analysis and BI development keeps me grounded in data clarity, governance, and practical reporting that helps management make confident decisions—especially in fully remote, international settings.