markbut.ch/er
Experienced technical leader // Creator of Instrumap
I build tools that turn raw materials into something useful. Most days that’s hardware at scale — biometric readers, smart card credentials, controllers that have to work first time, every time. Some evenings it’s a keygroup program built from a folder of samples.
25 yrs
shipping products
18mo → 6wk
deployment time
60 engineers
across 5 countries
hrs → 3min
per deploy
Featured Projects
ScrambleFactor SF.3
Technical Lead, Identiv | 2024
Biometric reader combining fingerprint, PKI, and capacitive touchscreen. Ran through UL294, UL2610, FCC, CE, and RCM certification. Won an industry award. The most fun I’ve had in years.
Echo — AI Speech Platform
CTO, Trellis Data | 2024–present
Complete reimagining of Trellis’ speech technology. Integrates with P25 radio systems and Everbridge 360 for keyword alerting and real-time sentiment analysis. Active trials with defense and justice departments internationally.
Instrumap
Side project | Music production tool
Turns a folder of multi-samples into a ready-to-play Akai MPC or Force keygroup program. Pitch detection, velocity layers, loops, EXS24 mapping. $4 on Gumroad, free updates through v2.0.