I’m Andrii — known online as igyVigy. For twelve years I’ve been shipping apps that founders and operators actually keep using: mobile, web, backend, and the occasional multiplayer game server. I take on a handful of projects each year and treat each one like my own.
A small, recent slice. Each one shipped, real users, real revenue. Hover for a quick look — full case studies on request.
Six things, done with care. Pick one or stitch them together — most projects need a few at once.
iOS, Android and cross-platform. Native feel, offline-first, ship-fast.
From marketing pages that convert to dashboards that scale to a million users.
REST, GraphQL, gRPC. Designed to grow with your team, not against it.
High-throughput multiplayer infra. Authoritative tick, anti-cheat, persistence.
0-to-1 in 8 to 12 weeks. From scribbled napkin to revenue-ready product.
Audit, scale, untangle. A senior set of eyes on your gnarliest problems.
Pragmatic choices. I’ll use what fits, not what’s trending. These are the tools I reach for most.
Not a developer at an agency. Not a freelancer between gigs. A senior engineer who chooses his work carefully and finishes what he starts.
I grew up tinkering with private game servers in eastern Europe — figuring out how to keep a hundred players in sync over a 56k modem turned out to be a surprisingly good foundation for everything that came after.
Twelve years in, I’ve built apps that get used every morning by yoga instructors, infrastructure that runs while gamers sleep, and tooling for teams of two and teams of two hundred. The throughline is the same: I sweat the details no one asked me to sweat.
I work directly with founders and tech leads, take a maximum of three projects at a time, and bill weekly in plain English. No agency overhead, no pre-sales theater, no hidden subcontractors.
A few of the people I’ve worked with recently. The full list is longer — happy to make introductions when it gets serious.
Anything from a one-line napkin sketch to a 40-page PRD. I read every brief myself and reply within two working days. If we’re a fit, we’ll book a 30-min call.