CueCart The engineer behind the wall.
CueCart isn't built by a faceless studio — it's built by one engineer who lives in real-time audio and live production.
Built to be trusted on air.
I'm Reinhard Zarandona — creator of sMix (a professional video production switcher) and builder of CueCart. I build broadcast and real-time tools that simply can't fail when the light goes red.
A decade shipping real software
15+ years building tools people rely on in live, high-stakes production — not demos, but software that runs the show.
Audio, AI & Full Stack Developer
Senior across real-time systems, desktop, web and mobile development.
CueCart's engine, interface and polish all come from one hand.
Built for the moment it matters
Obsessed with reliability: software that has to be right the first time, every time, with no second take.
Solo-built, client-proven
Crafted by the same engineer hundreds of clients have hired to ship hard things — and stayed to maintain.
Enjoying CueCart?
If it earns a place in your shows, a small coffee tip is always appreciated — it keeps the project alive and the updates coming.
Built with passion · Made for broadcast · Crafted to empower your shows
Want to work together?
Have a hard problem in real-time audio, AI or the web? I like those.