Freelancer profile translated to English.
Back to original languageAbout Alex
Specializing in the Apple Ecosystem: Native High-Performance Apps for iOS, macOS & watchOS
Generalists do everything a little – I do Apple right. Forgoing cross-platform compromises means your app gets: maximum performance, a UI exactly according to Apple's **Human Interface Guidelines**, and deep hardware integration.
As a solo freelancer, I program your app independently from architecture to App Store release.
My Unique Selling Proposition: Performance & On-Device AI
My specialty is optimizing large machine learning models for mobile devices. I ensure that computationally intensive AI models run smoothly and resource-efficiently directly on the iPhone or Mac (On-Device ML) – without draining the battery and with 100% data privacy.
My Focus Areas:
- 100% Native: iOS, macOS, watchOS (SwiftUI & Swift 6)
- Performance: Memory, CPU & battery optimization, On-Device Machine Learning
- Hardware & IoT: Bluetooth Low Energy (BLE) & sensor data processing
- Quality: Clean Architecture (MVVM) and reliable CI/CD setup
Looking for a developer who is deeply rooted in the Apple world and can independently elevate your code to the next level? Feel free to send me a message!
English
Native or bilingual
German
Native or bilingual
Can work on-site
Hamburg (up to 15km)
Experience
- Christian-Albrechts-Universität zu KielLead Developer & Software ArchitectMEDICALSeptember 2025 - February 2026 (5 months)Kiel, GermanyThe client for this software project was the Institute for Human Nutrition at Kiel University. As project manager and lead developer, I was responsible for the conception and development of a highly secure desktop application (macOS & Windows) for evaluating sensor data (sleep, heart rate) for scientific studies.
My Core Responsibilities and Achievements
- Architecture & Code Quality:Design of a secure, strict three-tier architecture. Leading code reviews to ensure the highest quality standards (Clean Code).
- macOS Deployment & CI/CD:Independent setup of build systems, automated testing, and CI/CD pipelines.
- Privacy-First & Security:Implementation of data storage that is purely encrypted within the local network, without cloud connection. Implementation of strict data protection regulations for medical health data.
- Project Management & Stakeholder Management:Technical leadership of a 5-person development team, agile task distribution, and weekly requirements coordination directly with the scientists.
- UI/UX Engineering:Implementation of comprehensive UI refactorings for a native, responsive user experience.
- Cloudflight GmbHSoftware Engineer InternSOFTWARE PUBLISHINGJune 2019 - June 2020 (1 year)Kiel, GermanyContributed to UX design following Apple Human Design Guidelines & Windows enterprise software within a C# development team.
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Education
- Computer Science B.Sc.Kiel University of Applied Sciences2026
Certifications
- Apple Swift Student Challenge - WinnerApple2026