Systems that carry real load.

Launch a modern ticketing platform for public transport that keeps working when the connection drops and plugs into the ticketing systems already in the field.

Designed the architecture and the integrations with a team of 18. Delivered NFC card support (Mifare, Cipurse), an offline mode and Face ID payments.

Payments and regulatory reporting depended on heavy manual processing.

Designed the integrations with the bank (REST/JSON) and a government e-document exchange system (SOAP/XML), with webhooks and Kafka. Modeled the flows in BPMN and specified every API in OpenAPI.

Modernize a growing SaaS platform, bring its documentation under control and shorten onboarding for new engineers.

Designed the move from monolith to microservices. Raised documentation coverage from 20% to 80% for applications, 0% to 100% for databases and 50% to 85% for APIs. Added QR and Apple Pay payment integrations.

Give a beverage brand a storefront and an event booking flow that convert, and that the team can update quickly.

Designed the experience in Figma and built it on Webflow, with Shopify for the store and Calendly for event bookings.

Build a scalable education business for systems analysts and architects, from curriculum to community to sales.

Grew a team of 20+ and launched 6 programs, from system integration and REST API to architecture, databases and SQL, and AI and process automation. Hosted 150+ webinars for learners in 17 countries.