The iOS engineer you call when it has to work.
Ten years of high-stakes apps: medical devices, millions of users, regulated industries. I handle the bits that don't fit in a Jira ticket.
- BLE/NFC device connectivity, background reliability, the stuff that fails in specific RF environments
- Architecture rescue: UIKit → SwiftUI, MVC → TCA, that singleton everyone routes around
- Production firefighting: crashes, performance, "it only happens on that one device"
Pricing
Architecture reviews, hiring help, second opinions on that thing that's been bugging you
Features, MVPs, migrations, firefighting. Minimum 5 days.
On-calls and priority support. One slot a month.
What I do
Ship your MVP
You get: a working app in the App Store. You've got Figma files, a deadline, and backend endpoints that mostly return JSON. I build it, handle App Review, and help you hire when you're ready to scale.
Fix the architecture
You get: a codebase your team can ship to without fear. That 4,000-line view controller, the singleton everyone routes around, the Objective-C bridge from 2018. I've migrated UIKit to SwiftUI, MVC to TCA, and worse.
Build the hard bits
You get: the feature that works, not the prototype that demos well. I can help with medical device connectivity over BLE, Apple Wallet passes that update themselves, or background processing that survives iOS 26.
Keep your agency honest
You get: a clear picture of what you're paying for. Spending six figures on an agency and something feels off? I review their architecture, audit their code, and tell you whether they're building a product or billing hours.
Join your team
You get: an extra senior who ships. I can embed in your Slack, ship features, review PRs, pair with juniors. I don't mind the tasks your team ignores because they won't get them to promotions.
Technical due diligence
You get: a report you can negotiate with. Buying a company? Investing in a startup? Need security audit? I read the codebase and tell you what's solid, what's duct tape, and what it'll cost to fix.
Not sure what you need?
Drop me a line and describe your situation. I'll point you in the right direction — even if that's not me.
What clients say
"Vadim was instrumental to the success Epsy enjoyed on iOS, taking it from an idea on a Miro board to the highest rated and most downloaded app of its kind on the store."
James C. · Mobile Engineering Lead
"We had a strict deadline, and Vadim managed to complete the job in time. He gave us meaningful feedback and suggested better approaches, not trying to blindly stick to our specification."
Upwork client · Apple Watch project
"I can say with confidence that it will be difficult to find a better developer. Vadim is achievement-oriented, highly organized, with very good communication skills."
Alex Z. · Co-Founder