Hi, I'm Santiago Aragon Malak

End-to-end software development for small and mid-sized businesses: web, custom systems, data and automation.

• I design and build websites, e-commerce and custom systems with React/Next.js, Node.js and PostgreSQL/Supabase — from landing pages to internal management portals.
• Built the custom LMS platform for Instituto Coubertin with Next.js, Supabase and Vercel, with complete product documentation; now in final testing and content loading.
• I implement automations and data reporting with n8n, Make and REST APIs: system-to-system sync, automatic alerts and tracking dashboards that replace manual processes.
• I own the full project lifecycle: technical discovery, proposal, development, deployment and maintenance.

I designed and built the organization's sports performance analytics system from scratch.

• Built the neuromuscular fatigue monitoring system for 967 athletes across 13 sports with BigQuery, dbt and Metabase, used as the staff's main decision-making tool.
• Implemented dynamic percentile thresholds (p25 fatigue / p75 supercompensation) that automatically classify each athlete as FATIGUED / ATTENTION / SUPERCOMPENSATION.
• Migrated the CMJ Rebound models from Metabase to dbt, with surrogate keys and athlete deduplication across the production and development environments.
• Developed the Return to Play dashboard framework and the multilingual (ES/EN/PT) version of the dashboards; automated system workflows with n8n.