Joao Fonseca

Modern Data Stack focused Data Engineer delivering production-grade ELT pipelines and analytics-ready data platforms. Core areas of execution: • Design and development of dbt models (staging → intermediate → marts) • Snowflake-based data warehousing and performance-aware SQL modeling • End-to-end ELT workflows (ingestion → transformation → structured datasets) • Data quality testing, validation and documentation best practices • Git-based version control and structured delivery workflows Selected work includes: • A production-oriented dbt + Snowflake analytics platform • An end-to-end analytics pipeline (ingestion, transformation and reporting-ready datasets) Focused on reliability, reproducibility and production-minded data engineering.

Founder & Technical Consultant with extensive experience in telecom infrastructure, automation and systems integration. Led technical operations in real-world environments, focusing on reliability, structured execution and system-level problem solving. Core areas of responsibility: • Automation workflows and system integrations • API integrations and relational database interactions • Structured data handling and reporting preparation • Operational troubleshooting in production environments • Implementation of least-privilege access and reproducible execution principles This role developed strong systems thinking, operational discipline and delivery accountability — foundations now applied directly to modern Data Engineering platforms.