• Owned end-to-end architecture of an IoT platform for perfume vending machines, from embedded device communication to cloud backend and web dashboard, built on Node.js/TypeScript, Express, Socket.io.

• Designed and drove a development lifecycle that cut development and maintenance costs by 50–75%, including a hardware simulation layer that accelerated testing and debugging 4x by decoupling development from physical hardware.

• Architected a relationship-based access control (ReBAC, OpenFGA) enabling flexible, client-specific role management across a multi-tenant platform.

• Engineered a resilient communication layer (MQTT + Protobuf) for real-time machine control and telemetry, leveraging message persistence for guaranteed delivery during connectivity loss and binary serialization to cut IoT SIM card traffic by ~2x.

• Ensured full compliance with international regulatory requirements across markets.

- Integrated TOR network in their Electron app to diversify the network. Integration is done with Service Worker Fetch interceptor, what gives opportunity to keep the network requests debuggable with DevTools. It is flexible and customizable.

- Local video transcoding with FFMPEG. As the platform is decentralized, the best is to keep the main work out of servers. This was done with video transcoding. Supports transcoding progress show in user interface.

This library was initially developed as part of zero-trust proxy solution. Finally, was divided in a separate solution that can be used for native JavaScript TLS communications without OpenSSL. Fine tunable thing with modern ECDSA ciphers support. Supports SOCKS proxies. 97% tests coverage with Mocha + Chai.