Josef Antoni

Senior iOS developer with 10+ years of experience building and maintaining production mobile apps for major banks and fintech companies. Strong in Swift, SwiftUI and the Apple ecosystem, and extending into Kotlin Multiplatform: my open-source project Kalorie pairs native SwiftUI and Jetpack Compose clients with shared KMP modules, backed by 1,000+ automated tests across platforms and CI. Experienced in AI-assisted development (Claude Code) and structured, incremental delivery.

Open to full-time or contract roles, remote-friendly.

iOS Developer at Finshape Czechia s.r.o. (2024-08 – 2026-05)

• Delivered iOS development services for a foreign banking client as an independent contractor.
• Developed and maintained features within a complex fintech mobile application.
• Collaborated with international teams following Agile/Scrum methodology.
• Stack: Swift, SwiftUI, Claude Code, MVVM, VIP, in-house REST & UI component libraries, SPM, Git.

iOS Developer at TIP IT Solutions (2022-09 – 2023-10)

• Developed and refactored features in ČSOB's mobile smart-banking application within a team of 10 iOS developers.
• Stack: Swift, SwiftUI, Combine, MVVM, SPM, Git.

iOS Developer at Raiffeisenbank (2021-03 – 2022-03)

• Contributed to Raiffeisenbank's smart-banking iOS application in a 7-person team.
• Implemented new features, refactored legacy code and submitted builds to the App Store.
• Stack: Swift, Objective-C, SwiftUI, Combine, MVVM, SPM, Git.

iOS Developer / macOS Developer at OKsystem (2018-02 – 2021-01)

• Built a secure messenger application with cryptography and blockchain features in a team of 4 developers.
• Shared the core codebase across iOS and macOS; responsible for App Store submissions.
• Stack: Objective-C, Swift, UIKit, MVC, Git.

iOS Developer at Pixelmate, TMDSGN, INVENTI Development (2015-10 – 2018-01)

• Built and extended a range of small and mid-size iOS apps, including an app for a smart-buildings startup from early concept to production and an app for the Chinese consumer-loans market.

High School Diploma in Applied Informatics – EDUCAnet, České Budějovice, Czech Republic