Tomasz Wojcik

Tomasz is a Krakow-based iOS engineer with 11 years of Swift experience. He spent four years at Revolut on the Wealth team, where he rewrote the trading charts in SwiftUI and shaved 40% off cold-start time by lazy-loading the analytics SDK. Before Revolut he was at Allegro, Poland's largest e-commerce platform, on the Seller Center iOS team. His specialty is iOS performance work: Instruments deep-dives, memory-graph debugging, and figuring out why your scroll view drops frames only on iPhone SE 2nd-gen. He has contributed patches to swift-syntax and writes a quarterly newsletter for iOS engineers that covers under-discussed APIs like BackgroundTasks and NSFileCoordinator. Tomasz holds the iOS App Development with Swift certification from Apple and occasionally runs paid workshops on Swift concurrency for in-house engineering teams in Europe.

Articles by Tomasz Wojcik

Tutorials 16 min read

SwiftUI Gestures: Tap, Drag, Rotate, and Custom Compositions

Learn every SwiftUI gesture — from basic taps and drags to pinch-rotate compositions and custom gesture types. Covers all five built-in gestures, four composition strategies, practical examples like swipe-to-dismiss cards and long-press-then-drag patterns, plus performance tips for iOS 26.