Hi, I am David Molnar
I build useful things with software, hardware, and Bitcoin.
I am a senior software engineer with 15+ years of hands-on work behind me, including 8 years building open-source Bitcoin privacy tools. Today I work independently on software, hardware, and Bitcoin projects that are worth building properly.
What I do
Bitcoin — development, privacy, mentoring
8 years of active Bitcoin development since 2018. Wasabi ex-CTO and CoinJoin protocol work. Privacy, security, non-custodial.
Software engineering
.NET, C#, and the full surrounding stack — desktop, client-server, embedded, database. 15+ years, from firmware to production systems.
Firmware & embedded
ESP32, STM32, Atmel, nRF52. Bluetooth modules, displays, MP3 chips, SD card. Battery-powered handhelds.
Smart home & electrical
Home Assistant, Homey, Zigbee. Homes and building automation, remote access, monitoring, AI.
3D printing & industrial parts
Bambu X1C printing up to 1,000-piece runs. Multi-color, PLA, PETG, ASA, ABS, carbon and glass fiber.
Get in touch
Open to interesting collaborations, consulting, and conversations. English or Hungarian.
Book a 30-min call