Kotlin Multiplatform Experts in Germany
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Meet FRATCH Experts in Germany, who have recently used Kotlin Multiplatform
Cristian Petra
Last position:
iOS Team Lead at Qlaunch Gmbh
- Contributed to the architecture design process, resulting in scalable and maintainable solutions for complex projects.
- Enhanced app performance by optimizing code and implementing efficient algorithms.
- Stayed current with industry trends to ensure implementation of best practices in app development.
- Led a team of iOS developers for timely completion of projects and achieving client satisfaction.
- Translated basic design plans into full iOS app frameworks, delegating project components to appropriate team members.
- Estimated work hours and tracked progress using Scrum methodology.
Matthias Zarzecki
Last position:
Senior Flutter Developer at Materna
- Developed a Flutter app for eID ID card logins
- Focus: Flutter, iOS, eID, AusweisAppSDK, Mason, Keycloak, Agentic Coding, Arc42, Jenkins
Jonas Dittrich
Last position:
CEO at softwarebees GmbH
Umer Dilpazir
Last position:
Activation and Vocational Integration Program with Integrated Language Support at Berlitz
- Intensive language course with a focus on professional language content.
Benedikt Irsch
Last position:
Senior Agile Coach at Digital GmbH
- Guide multiple high-performing teams within a dynamic, skilled, and motivated environment
- Collaborate with other coaches on the ART (Agile Release Train) level, fostering collaboration and continuous improvement
- Work closely with product management, Release Train Engineers (RTE), and architects to ensure robust alignment with strategic objectives
- Identify flows through the SAFe value stream and other key areas, supporting teams in refining agile practices based on Flight Level Coach experience
- Cultivate a culture of excellence, integrating agility, strategic alignment, and value flow seamlessly
Burak Ceylan
Last position:
Senior Android Developer at Awesome Technologies GmbH
- Optimized the Amp healthcare app alongside a senior developer, specifically enhancing data caching mechanisms which led to a 25% improvement in load times.
- Applied MVI architecture, resulting in a 30% decrease in bugs and streamlining testing processes.
- Implemented CI/CD with Bitrise, reducing deployment sizes from 120MB to 104MB.
- Led the migration of 40% of the Java codebase to Kotlin.
- Achieved 85% unit test coverage.
Jan Kronenberg
Last position:
Software Architect: Training Platform for IT Career Changers at appvanced
- Mobile: Kotlin Multiplatform (KMP), Kotlin, Swift, SwiftUI, Jetpack Compose, Ktor, Room, Koin
- Backend: Spring Boot, GCP Cloud Run, GCP Load Balancer, GCP Eventarc
- Planned and developed a cloud backend architecture with Google Cloud Platform
- Developed a cross-platform architecture with Kotlin Multiplatform (KMP)
- Tech lead for comprehensive large project including webshop, two apps and omnichannel backend
M Samy Hussein
Last position:
Android Developer at Check24 GmbH
- Developed and maintained the large-scale Check24 car insurance native Android app serving millions of users using Jetpack Compose.
- Owned the end-to-end implementation of new features, including planning, development, and delivery in an Agile/Scrum environment.
- Refactored legacy Java code into a modern Compose architecture, improving maintainability and long-term scalability.
- Performed code reviews for team members via Bitbucket, ensuring code quality, architectural consistency, and Kotlin best practices.
Yodgorbek Komilov
Last position:
Android Developer at Mein Artz
- Led the development of a doctor scheduling Android app, integrating Jetpack Compose and Kotlin Multiplatform, achieving a 30% performance improvement.
- Implemented complex UI components, ensuring 99.8% crash-free user sessions.
- Seamlessly integrated Compose UI with existing View-based components.
- Optimized API calls, reducing load times by 20%.
- Tech Stack: Kotlin, Jetpack Compose, KMM, MVVM, Koin, Firebase, Stripe API, Crashlytics
Christine Zander
Last position:
Freelance Art Director at Freelance
Idea generation/concept development through to implementation and production supervision of print and online advertisements of all kinds
Concept development of integrated campaigns/campaign design
P.O.S.-Design
Corporate design and brand management: concept or adaptation/creation of style guides
Editorial work – magazine and newspaper design
Mailing campaigns
Web design and banner campaigns
B2B and B2C communication
Web design and usability
Illustration
Political campaigning
Anton Kolchunov
Last position:
Senior iOS Engineer at HelloFresh SE
- Spearheaded development of the Experimentation Library, starting from writing RFC towards integration and support of the feature teams
- Spiked the possibility of using Kotlin Multiplatform for Experimentation Library to share implementation with Android
- Designed, developed, and iteratively integrated a new Data Layer, which unblocked and improved the development speed of the feature teams
- Organized workshop about Swift Concurrency to improve knowledge amongst iOS engineers and became a go-to person for related questions
- Completed overhaul of the existing CI configuration to make it more maintainable by big team
- Incorporated Bash script linter to harden CI and Utils scripts for iOS project
- Spiked Tuist as an option to integrate modularized features with 500+
- Maintained tooling to identify UI Tests ownership with custom Swift CLI and native SwiftLint rule
- Provided support to other teams on uncommon architecture questions
- Actively participated in shaping development culture within the team and across the whole iOS chapter
- Used technologies: Swift, SwiftUI, Swift Concurrency, Swift Package Manager, Bash, Git, GitHub Actions, Bitrise
Wolfram Rittmeyer
Last position:
Backend and Flutter App Developer at WWU Münster
- Further development of the existing citizen science app with Flutter for Android and iOS to integrate new features.
- Updated the backend, including database migration.
- Used Android, iOS, Flutter, Dart, Riverpod, Drift (migration from moor), flutter_local_notifications, home_widget, flutter_markdown, and flutter_workmanager.
- Backend development with Spring Boot, Kotlin, Kotlin Flow, GraalVM, PostgreSQL, and Docker.
- Used Firebase App Testing, Testflight, as well as Google Play Console and App Store upload.
Rafael Kolloch
Last position:
Senior Android Developer / Team-Lead at IBM Deutschland
- Further development and release support of a white-label e-prescription component for health insurance companies
- Technologies: Android (Kotlin), Kotlin Multiplatform, Coroutines, Jetpack Compose, MVVM, StateFlow, Gradle, ProGuard
Anton Atamanovski
Last position:
Freelance Software Developer at Freelance Software Developer
- Developed the Chrome extension mailsome.ai for AI-powered email reply generation
- Used OpenAI API, Stripe, Node.js, TypeScript
Discover over 15,000 top freelancers
Statistics of experts using Kotlin Multiplatform
Aggregated from the professional profiles of matched freelancers.
Experience
15 years
Position duration
2.3 years
Positions per freelancer
9
Top business areas
Product Development, Information Technology, Quality Assurance
Top industries
Information Technology, Healthcare, Automotive
Certification focus areas
Information Technology, Product Development, Project Management
Bachelor's degree or higher
100%
Master's degree or higher
36%
Certifications per freelancer
2
Most common languages
German, English, French
Speak two or more languages
100%
Based on our profile pool as of 30 Aug 2026.
Daily rate distribution
The chart shows how the daily rates of freelancers in this technology in Germany are distributed, based on recent contracts on our platform. Each bar covers a rate range — its height shows how many freelancers charge within that range.
Average rates of experts in Germany using Kotlin Multiplatform
Rates are based on recent contracts and do not include FRATCH margin.
The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 30 Aug 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
About the technology
Shared codebase
Kotlin Multiplatform, often called KMP, lets teams share logic across Android, iOS, desktop, backend, and web targets without forcing one runtime everywhere. It fits products that need native app experiences but want one place for domain rules, networking, and data handling.
What it delivers
- Shared domain and validation logic
- Network and API layers with Ktor or similar clients
- Data storage and synchronization modules
- Native UI apps with platform-specific screens
- Internal SDKs and reusable feature packages
Tooling stack
Strong specialists know the Kotlin ecosystem around KMP: Gradle, coroutines, serialization, testing, and platform interop. They also handle Android Studio setup, Xcode integration, source set design, and dependency management so builds stay stable for both mobile teams.
When companies hire
Teams usually bring in freelance expertise when they want to modernize a mobile product, split shared logic out of duplicate code, or rescue a slow build and brittle module structure. In Germany, this often comes up in product teams that need close collaboration between mobile and backend specialists across distributed offices.
What good professionals do
Good professionals keep shared code small where it should be, and platform code where native behavior matters. They write clear boundaries, predictable APIs, and tests that protect business rules. They also understand how to work with app release flows, CI, and review standards across Android and iOS.
Typical project focus
- New KMP architecture for a greenfield app
- Migration from duplicated native logic
- Shared libraries for authentication or payments
- Interop between Kotlin, Swift, and Objective-C
- Support for teams adopting Kotlin Multiplatform Mobile, or KMM, in existing products
Frequently asked questions
Need clarity? These are the questions we hear most often about Kotlin Multiplatform.
Kotlin Multiplatform is used to share business logic, networking, persistence, and validation across Android, iOS, desktop, and backend services. It is a strong fit when a team wants native app experiences but does not want to rewrite the same rules in multiple codebases. In practice, it often powers shared SDKs, mobile features, and internal libraries.
Kotlin Multiplatform shares code where it makes sense, but it does not force one UI stack across all targets. That makes it different from Flutter or React Native, which are usually chosen for a shared interface approach. Teams often pick KMP when they want native UIs and shared business logic at the same time.
No. Kotlin Multiplatform is usually used to reduce duplication, not to remove native work entirely. Platform-specific UI, device features, and app-store release flows still need specialist attention. The best results come from clear shared modules and well-defined native boundaries.
A strong Kotlin Multiplatform specialist usually knows coroutines, serialization, dependency injection, Gradle, and testing. For mobile products, Swift, Objective-C interop, and Android app architecture are also important. Experience with CI pipelines and modular codebases helps a lot.
Kotlin Multiplatform projects with simple shared logic can work with a focused specialist who has shipped a few real integrations. Larger products need someone who has handled module boundaries, iOS interop, and release stability before. The key is not only Kotlin knowledge, but practical experience with cross-platform trade-offs.
Yes. Kotlin Multiplatform work is often done remotely, especially when the team already uses shared issue tracking, code review, and mobile release pipelines. In Germany, on-site time may still help during architecture workshops or early migration phases, but day-to-day delivery is usually remote-friendly.
Look for clear module design, stable builds, and code that avoids platform leakage into shared layers. A good Kotlin Multiplatform expert can explain why a piece of logic should be shared or kept native, and can show tests that protect the business flow. You should also see careful handling of iOS integration and Gradle setup.
Kotlin Multiplatform is the broader technology. KMM, or Kotlin Multiplatform Mobile, is the mobile-focused use case most people mean when they talk about shared code for Android and iOS. If a freelancer understands both terms, they are usually thinking in the right architecture terms for mobile delivery.
The average hourly rate of freelancers in Germany who have used Kotlin Multiplatform in their recent projects is 78 €, which corresponds to a daily rate of about 625 € based on an 8-hour working day.
Of the freelancers in Germany who have used Kotlin Multiplatform in their recent projects, 100% hold at least a Bachelor's degree and 36% hold at least a Master's degree.
On average, freelancers in Germany who have used Kotlin Multiplatform in their recent projects have 15 years of professional experience, with a single engagement typically lasting around 2.3 years.
The most common languages among freelancers in Germany who have used Kotlin Multiplatform in their recent projects are German (93%), English (93%), and French (21%).
The most common industries among freelancers in Germany who have used Kotlin Multiplatform in their recent projects are Information Technology (100%), Healthcare (64%), and Automotive (57%).
The most common business areas among freelancers in Germany who have used Kotlin Multiplatform in their recent projects are Product Development (100%), Information Technology (93%), and Quality Assurance (57%).
Main locations of FRATCH Experts, who have recently used Kotlin Multiplatform
Our freelancers and interim experts are at home across the DACH region — available on-site in the major business hubs or fully remote. Choose a location to discover matched specialists, local market insights and up-to-date availability.
Berlin Hamburg Munich Cologne Frankfurt Stuttgart Dusseldorf Leipzig Dortmund Essen Bremen Dresden Hanover Nuremberg Request a free demo
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Philipp Thomaschewski
FRATCH CEO
