I've built scalable backend systems and full-stack products for iTrainingExpert, Annovating B.V., and European startups. At iTrainingExpert, I architected a core PHP platform for managing corporate training across multiple client accounts.
I built a template-driven email automation engine that cut operational overhead by an estimated 60%, optimized high-load SQL queries, and introduced centralized logging and error monitoring to reduce production downtime.
At Annovating, I developed Django services and React components for real-time wearable health data from Fitbit, Garmin, Polar, and Withings. Across 50+ consulting projects, I've delivered web applications, REST APIs, and automation solutions from technical discovery through production handoff.

