Sandor Kolotenko iOS Articles & Videos

Curated content from
Sandor Kolotenko
iOS engineer with nearly two decades in software development and over ten years focused on mobile apps.

Latest resources

Controversial Swift Features

May 19, 2026

Who would have thought that software development can spawn controversy? Never mind code padding and whethe curly braces should start on a new line, check out these Swift features.

About
Sandor Kolotenko

Sandor Kolotenko has spent nearly two decades in software development, including over ten years focused on building dependable mobile applications across a range of sectors, from established institutions such as Lloyds Banking Group, Harrods, and Heathrow Airport to agile, fast paced startups. These days he has stepped away from client work, opting for the calm and clarity of a permanent role while steadily developing a small portfolio of independent mobile apps in his own time.

His strength lies in maintaining and modernising iOS codebases, carefully introducing SwiftUI, Core ML, and accessibility enhancements without disrupting what already works. Although iOS is his mainstay, he does support Android where needed, particularly around syncing, payments, and mapping, ensuring parity across platforms without fuss.

Sandor has vast experience building and maintaining CI/CD infrastructure. He relies on tools like Xcode Cloud, GitHub Actions, Gitea, and self hosted pipelines to keep builds predictable and clean.

Outside work hours, he tinkers with ESP32 boards and indulges in a bit of game development, usually involving spatial audio, animated dialogue, cats, spaceships, and playful experimental UI.

He is currently not looking for freelance projects but is always happy to talk shop.

In partnership with
Appcircle
Appcircle
iOS App Distribution Explained | Choosing the Right Method for Your App
Not every iOS app goes to the App Store directly. Depending on your audience and release stage, you might be using TestFlight, Ad Hoc, Enterprise, Unlisted app distribution, or a combination of these. This guide covers how each method works, the pros and cons of each approach, and best practices for keeping distribution reliable and automated. Sponsored by Appcircle.
See the full guide
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