Selected results

Building the central order-management system for a pet-supplies e-commerce doing tens of thousands of orders a month — on Open Mercato, mirrored live from their desktop ERP.

Rebuilt a made-to-order steel-tank manufacturer's sales pipeline end to end: a modern multilingual site, an instant-quote configurator, a CRM wired into their inbox, and AI-drafted quotes — turning free-text email threads into structured, fast-moving deals.

Prototyped and now building a custom Open Mercato ERP for a growing Polish metal fabricator — RFQ to invoice in one flow, with impact-aware rescheduling replacing the production tool, spreadsheets and paper binder they'd outgrown.

Modernized a 20-year-old C# monolith powering most US health universities — incrementally, no big-bang rewrite.

A modern tournament-management SaaS — registration, automated brackets, live scores — across web, iOS and Android from one codebase.

Built an international tours marketplace + operator SaaS from scratch, and advised the founders through fundraising.

An all-in-one festival platform — discover fests, plan the trip, personalize the experience — web + iOS/Android, built end to end.

The native iOS & Android app for a hiring platform — candidate overview, team notes, powerful search.

A court-booking mobile app built in one month — and still rated 4.93/5 with 1,000+ reviews five years on.

A travel-social app to find nearby activities, meet travellers and set up meetups — responsive web + native apps.

A super-interactive online radio: live chat, song requests, profiles and ranks, realtime over WebSockets.

A Polish social job aggregator — 'LinkedIn before LinkedIn' — tuned for ~40M monthly page views.

Moved specialist dictionary publishing online — public portal, reseller panel, and a browser-based editor — built from scratch.