iOS Developer from Bydgoszcz, Poland. 5 apps live on the App Store.
I design, build and ship my own apps end-to-end: from Figma mockups, through SwiftUI architecture, to App Store release, localization and ASO. I care about clean, readable Swift and polished, native-feeling UI.
📫 Contact: mjedrzejak@icloud.com · LinkedIn · X @maartin_j
💼 Open to iOS Developer roles and B2B contracts in Poland or remotely.
Apple Frameworks: Swift, SwiftUI, UIKit, async/await, Core Data, SwiftData, CloudKit Sharing, HealthKit, User Notifications, TipKit, Charts.
Architecture: MVVM, VIPER (PillMemo).
Networking: JSON, URLSession, REST API (GPT-4 Vision, external backends).
Testing & CI/CD: Unit Tests, UI Tests, Git, Xcode Cloud, SwiftLint.
Monetization: StoreKit, RevenueCat.
Analytics & User Feedback: WishKit, TelemetryDeck, Mixpanel, Aptabase.
AI-assisted development: ChatGPT, Claude (code review, prototyping, localization).
Other: VBA, Power Automate, SQL, Microsoft Office.
A comprehensive medication schedule manager for users and caregivers, with flexible reminder scheduling.
Tech highlights: SwiftUI · Core Data · UserNotifications · CloudKit Sharing · VIPER
App Store link · Website
Point your camera at a medication package and MedScan identifies it, then shows detailed usage and side-effect information.
Tech highlights: SwiftUI · GPT-4 Vision · MVVM
App Store link
Hydration tracker paired with emotional check-ins, encouraging a more mindful daily routine.
Tech highlights: SwiftUI · HealthKit · State of Mind · Swift Charts · WidgetKit
🏆 Recognized in the RevenueCat Ship-a-ton competition.
App Store link
Create multi-page PDFs from photos or scans, and control output quality for easy sharing.
Tech highlights: SwiftUI · VisionKit · PDFKit
App Store link
A light, seasonal app focused on polished animation and a sense of the approaching holidays.
Tech highlights: SwiftUI · EventKit · AVFoundation
App Store link
Basic Car Maintenance - an open-source app by Mikaela Caron for tracking vehicle maintenance and inspections.
Contributed Vehicle Display in settings and the Onboarding View UI. Two merged contributions, including responding to code review feedback.
- Foundation Models APIs and on-device AI (WWDC26)
- macOS development — internal tooling for screenshot compositing and ASO workflows
- TCA Architecture