10/14/2026 updated
100 % available
Senior iOS/macOS Developer & Mobile Security Architect | ab 01/2027
Luxembourg, Luxembourg
Worldwide
Master of Business Administration - MBAAbout me
Senior iOS/macOS Developer with 15+ years of experience, specializing in AI integration, secure architecture, and advanced mobile technologies. Creator of Threat Explorer for penetration testing on Apple platforms, with 100+ commercial apps done for clients like Dolby, HCSS, Emtec, GlobalLogic.
JavaScriptArtificial IntelligenceAndroid (Software)Apple IOSApple Mac SystemsApple XcodePenetration TestingArchitectureArchitectural DesignAutomationBankingBash ShellC Sharp (Programming Language)Cascading Style Sheets (CSS)Mobile Application Development
iOS/macOS Development
Expert iOS and macOS development with 15+ years of experience, specializing in Swift, Objective-C, and cross-platform solutions with 100+ commercial apps and 20+ personal projects
Mobile Security & Architecture
Advanced mobile security implementation including secure architecture design, penetration testing, and vulnerability assessment with expertise in CI/CD encryption
AI Integration & CoreML
Specialized AI integration and CoreML implementation for innovative mobile solutions including 3D photo shooting and multiplanar image fusing technologies
Cloud Technologies
Xcode Cloud and Bash scripts implementation for automated development workflows
Payment Systems
Comprehensive payment integration including Apple Pay, Google Pay, Huawei Pay, and various P2P payment methods
Database Management
SQLite and CoreData expertise for mobile application data management
Web Technologies
Full-stack development capabilities with JavaScript, React, HTML/CSS, TypeScript, and WebRTC
DevOps & CI/CD
Jenkins, Bitrise, GitHub, GitLab, and Fastlane implementation for continuous integration and deployment
Banking & FinTech
iOS development for German and Ukrainian banks: cards and payments features, accounting modules, digital transformation of mobile banking. R&D on fraud detection for card-to-card, P2P and interbank transactions.
Swift & Apple Frameworks
Swift, SwiftUI, UIKit, AppKit, Combine, Swift Concurrency (async/await), Core Data, Core ML, Vision, Metal, MetalFX, ARKit, AVFoundation, StoreKit, XCTest, Swift Package Manager.
macOS Desktop Applications
Native macOS applications for a US software publisher: modernisation of established consumer titles from Objective-C to Swift and SwiftUI, code signing, notarisation, Mac App Store distribution.
Application Security
OWASP Mobile (MASVS/MASTG), certificate pinning, Keychain, static and binary analysis, reverse engineering, security audits of payment platforms. Author of a book on secure iOS and macOS development.
Android & Windows
Kotlin and Android SDK, C# and .NET desktop applications for Windows, Xamarin.
Leadership
Lead of iOS/Android teams, software architecture, code review, technical interviews for iOS and macOS positions.
Experience
Professional experience10+ years
Freelancer since2010
Languages
GermanBasic knowledgeEnglishFluentFrenchBasic knowledgeDutchBasic knowledgePolishBasic knowledgeRussianNative speakerUkrainianNative speaker
Project history
- iOS development of the DKB mobile banking app in an agile team.
- 08/2026 - 10/2026: Cards & Payments team.
- From 11/2026: Accounting team.
- Swift, SwiftUI, UIKit, code review; regulated banking environment.
- Security testing of a payment platform from an attacker's perspective.
- Audit of payment flows: card-to-card, P2P and interbank transactions.
- R&D on detection of fraudulent and suspicious transactions.
- Audit reports with remediation guidance for the development teams.
- Modernisation of established consumer desktop titles for a US software publisher: Hallmark Card Studio for Mac, Check Designer and My Checkbook.
- Ground-up rebuild of the macOS applications in Swift, SwiftUI and AppKit, replacing legacy Objective-C code.
- Windows desktop development in C# and .NET for the same product family.
- Code signing, notarisation, release builds, estimates and delivery planning directly with the client's management.