Cezary Siwek is a Real Time Communication specialist with over 20 years in the field and the creator of Voiceblender. He has built voice and video infrastructure at Vonage, Stream, and Rakuten Mobile, working across the full RTC stack from carrier-grade telephony to modern WebRTC platforms.
Talks
No PBX, No Problem: Real-Time Voice in Pure Go(CommCon Düsseldorf 2026)
The World of (audio) Websockets(CommCon 2018)