AppBaumeister Collective
Independent Senior Experts for iOS, Android & Web App Development
Our Members
Tobias Boehm
Senior Android Developer
Björn Kechel
Senior Android Developer
Tobias Weber
Senior Fullstack Developer
Our Members
Click any specialist for more information
Tobias Boehm
Senior Android Developer
Björn Kechel
Senior Android Developer
Tobias Weber
Senior Fullstack Developer
Services
Professional App Development - We Develop Apps for Your Success
App Maintenance & Updates
Keep your existing app current and functional. We handle App Store compliance, bug fixes, performance optimizations, and regular updates for Android and iOS apps.
What you get:
Your benefits:
Our process:
Free Consultation
Get an assessment for your app project within 24h
24 Hours
Response guaranteed
Free
No-obligation consultation
Instant Assessment
Direct feedback on your project
Network of Independent Specialists
Meet our independent specialists. Each expert works autonomously and directly with you.
Tobias Boehm
Senior Android Developer
Lead Android developer with 10+ years experience building scalable mobile applications for diverse industries.
Björn Kechel
Senior Android Developer
Senior Android Developer with 14+ years experience in native Android development, Kotlin Multiplatform and gaming.
Tobias Weber
Senior Fullstack Developer
Senior Fullstack Developer with 6+ years of experience developing cloud-native microservices architectures and modern web applications for banking, e-commerce, and industrial solutions.
Ready to Work with One of Our Independent Experts?
Contact us for a free consultation. We'll connect you with the right independent freelancer for your project.
What Unites Us as a Team
Shared principles that shape our work and strengthen us as a team
Clean Architecture First
Testable, modular code architecture with 95%+ test coverage and automated quality controls (ktlint, detekt, SonarQube).
Cutting-Edge Tech Stack
Apple Vision Pro apps, AI integration (OpenAI GPT), Kotlin Multiplatform, and cloud-native solutions in production enterprise applications.
Enterprise-Grade Experience
Proven expertise in mission-critical systems: Healthcare, Telecom, Streaming platforms serving millions of users.
Direct Collaboration
Independent experts work directly with you - no agency overhead, no middlemen, transparent fixed prices from day one.
Discover Our Experts in Detail
Learn more about the skills, projects, and experience of our independent specialists.
View Team ProfilesPortfolio
Successful individual projects by our independent members
Gesundheitsapp
Entwicklung der Allianz Gesundheitsapp mit Fokus auf Accessibility und CI/CD.
Arbeitssicherheit Watch App
Entwicklung einer Apple Watch App für Arbeitssicherheit mit IoT-Integration.
Whitelabel App
Entwicklung der Bitmarck Whitelabel App für 30 Krankenkassen.
Apple Vision Pro AR App
Entwicklung von Augmented Reality Apps für die Apple Vision Pro.
Museum Guide App
Flutter Whitelabel App für Museen mit QR Code Scanner und Audio Streaming.
Elektronische Patientenakte (ePA)
Entwicklung und Wartung der elektronischen Patientenakte (ePA) mit höchsten Sicherheitsanforderungen im Healthcare-Bereich.
Tracemate Android App
Architectural and structural overhaul with introduction of Clean Code & Clean Architecture.
Congstar Main App
Main app modularization and introduction of code quality controls with Jetpack Compose.
Mind Extension - AI Content App
Full-stack development of an AI content generation app with Android frontend and cloud backend.
RTL+ Music/MPA
Next-generation media streaming solution. Responsible for the podcast section of the app.
Immowelt Search App
Further development of the real estate search app with innovative polygon search function on Google Maps.
AOK Bonus App
Redesign project with single-activity navigation for highly modularized healthcare app.
komoot Android App
Leading outdoor navigation app in DACH region with 3M+ downloads and up to 1M active users.
Logistik Management App
Entwicklung von Logistik- und Transportmanagement-Anwendungen mit Real-Time Tracking.
Premium Brand Mobile App
Entwicklung der Premium-Brand Mobile App für Montblanc mit E-Commerce Integration.
Member Details
Learn more about our independent specialists and their expertise
Tobias Boehm
Senior Android Developer
As a Senior Android Developer with over 10 years of experience, I bring a passion for clean code and future-proof solutions. From my beginnings as co-founder of RETROTEAM UG to my current work with IBM's electronic health record, I have helped teams build modern, intelligent, and fast mobile apps.
My expertise spans the complete app development process - from concept and design to deployment. I specialize particularly in Clean Architecture, Kotlin/Jetpack Compose, and the integration of generative AI into mobile applications.
Freelance Senior Android Developer
Maintenance and further development of the electronic health record (ePA) v3.0 and v3.0.5.
Freelance Senior Android Developer
Architectural and structural redesign of the Tracemate Android App.
Freelance Senior Android Developer
Modularization of the main app and introduction of code quality controls.
Mobile & Backend Developer
Full-stack development of an AI content generation app "Mind Extension".
Senior Android Developer (Contract)
Media streaming solution RTL+ Music/MPA. Responsible for the podcast area.
Contact
Ready to discuss your project? Let's connect and explore how we can help.