Real projects under real load. Built and delivered.
No theory, no slides, just code running in production and systems that scale.
A payment API for millions of users that had stopped scaling. Every load spike was a risk, every new payment provider integration weeks of work. I stabilized the existing backend, built a microservice architecture in Go alongside it, and integrated both cleanly over gRPC without interrupting live payments.
A newly formed team inherited grown legacy code running revenue reporting for a global AdTech platform with nine-figure turnover. The brief: modernize it and migrate it into a scalable AWS environment while it kept running. Timeline: 12 months.
A pending PHP 8 upgrade was the trigger for modernizing a publishing platform grown over more than 20 years. PHP 8 migration, a new search architecture on Manticore Search, a move to Kubernetes and technical SEO work, all while the editorial team kept publishing, without a single day of downtime.
A digital catalogue written in Perl, with no real e-commerce behind it, replaced by a full in-house online shop. Deeply integrated with inventory management and point of sale, with ML-driven product recommendations and an international rollout.