Freelancer profile translated to English.
Back to original languageAbout Martin
Mobile Architect with 15+ years of deep experience in native (iOS/Android) and Flutter development
I help companies build sophisticated mobile projects on a sustainable technical foundation: from architecture and implementation to CI/CD and release management. My profile combines two worlds: deep native experience (Kotlin/Java, Swift/Objective-C, C++) and several years of Flutter practice.
This is where my specialization lies: thegradual, low-risk migration of existing native apps to Flutterwithout costly complete rewrites. I encapsulate native functionality in reusable modules; native and Flutter run in parallel within the same product.
Typical projects:native ↔ Flutter migration, Greenfield Flutter apps, Platform Channel integration, architecture reviews, and technical consulting. As a former Team Lead Mobile, I also bring experience in code reviews, specifications, and stakeholder communication.
For larger projects, I prefer to start with a concise architecture and feasibility analysis before any code is written. This creates a robust foundation.
German
Native or bilingual
English
Fluent
Can work on-site
Hamburg (up to 50km)
Experience
- CIB software GmbHTeam Lead Mobile DevelopmentTECHOctober 2023 - October 2025 (2 years)Hamburg, Germany• ● Team & Collaboration: Led a distributed, multinational development team (~4 people); close coordination with UI/UX, QA, and, if necessary, Marketing or other departments.• ● Technology Stacks: Supported and further developed native Android and iOS apps (Java, Kotlin, Objective-C, Swift) as well as cross-platform Flutter modules; maintained shared libraries for both platforms; software testing via unit tests, Espresso, and Appium.• ● Apps & Modules: ○ CIB flow App (further development, 80% Flutter, 20% native via scan module, Android & iOS) ○ CIB doXiscan (new development, 80% native via scan module, 20% Flutter, Android & iOS) ○ CIB doXicloud (new development, 100% Flutter, Android & iOS) ○ CIB doXisafe (further development, 99% native, 1% Flutter, Android & iOS) ○ Kanzlei App (maintenance, 100% native, Android & iOS) ○ Scan module for document capture (extracted from CIB doXisafe, 100% native, Android & iOS) ○ SDK (maintenance, 100% native, Android & iOS)• ● Tasks & Processes: ○ Capture, specification, effort estimation, prioritization, and assignment of requirements, tasks, and bug fixes ○ Optimization of the interaction between different software components and external systems ○ Technical specification for developers, conducting code reviews, sprint planning, and daily meetings○ Optimization of release and CI/CD pipelines to increase development efficiency and quality ○ Error analysis and runtime optimization of apps, including automated bug reporting and monitoring ○ Responsibility for the technical architecture and further development of core libraries ○ Writing unit tests, UI tests via Espresso ○ Support for QA in test automation via Appium ○ Regular reporting, coordination, and presentations for management ○ Conducting job and employee interviews
- CIB software GmbHSenior Mobile DeveloperOctober 2022 - September 2023 (11 months)Sole new development of a cross-platform app based on the prototype with Flutter for Android and iOS (CIB flow App).
- CIB software GmbHSenior Mobile DeveloperJune 2021 - December 2021 (6 months)Development of the prototype for a cross-platform app with Flutter for Android and iOS (CIB flow App).
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Education
- Diplom-Informatiker (FH)Heilbronn University of Applied Sciences;Diplom-Informatiker (FH)