David Molnar — software · hardware · Bitcoin · open source

Software, hardware, and Bitcoin privacy tools.

Senior software engineer with 15+ years building software, 8 of them on Bitcoin privacy. Former CTO at Wasabi Wallet, now an independent contractor.

See my work Get in touch

What I do

Bitcoin node and hardware wallet on a dark desk
01 — Bitcoin

Bitcoin — development, privacy, mentoring

8 years of active Bitcoin development since 2018. Wasabi ex-CTO and CoinJoin protocol work. Privacy, security, non-custodial.

 Multi-monitor developer workstation with code editors
02 — Software

Software engineering

.NET, C#, and the full surrounding stack — desktop, client-server, embedded, database. 15+ years, from firmware to production systems.

 PCB, partly disassembled handheld device, oscilloscope and soldering tools
03 — Firmware

Firmware & embedded

ESP32, STM32, Atmel, nRF52. Bluetooth modules, displays, MP3 chips, SD card. Battery-powered handhelds.

 Electrical cabinet with control modules and a wall-mounted touch panel
04 — Smart home

Smart home & electrical

Home Assistant, Homey, Zigbee. Homes and building automation, remote access, monitoring, AI.

 Enclosed 3D printer printing an industrial bracket, with filament spools and calipers
05 — 3D printing

3D printing & industrial parts

Bambu X1C printing up to 1,000-piece runs. Multi-color, PLA, PETG, ASA, ABS, carbon and glass fiber.

Elsewhere

Get in touch

Open to interesting collaborations, consulting, and conversations. English or Hungarian.

Book a 30-min call
Email hello@davidmolnar.dev
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