Alfonso Esteban

At CNC-Technology, I contributed to ETL processes that integrated corporate data from multiple sources. I automated processing with Python, optimised SQL queries, and cleaned, validated, and normalised datasets for analysis.

I'm building GRASP end to end: a Flutter social application backed by PostgreSQL on Supabase. I designed row-level security and access controls, developed Deno Edge Functions and scheduled maintenance tasks, and integrated Cloudflare R2 object storage through signed URLs.

I also built a convolutional neural network workflow for classifying breast-tissue images as benign or malignant, covering data preparation through model evaluation. My foundation in computer engineering combines data engineering with machine learning and computer vision.