Kotlin Multiplatform Experts in Germany
, matched quickly with vetted, available freelance specialistsHire experts who share business logic across Android, iOS, web and desktop applications, connect Kotlin code with native platform APIs, and deliver production-ready mobile architecture. FRATCH finds the right vetted, available freelancer through fast, precise AI matching.
Meet FRATCH Experts in Germany, who have recently used Kotlin Multiplatform
Dorin L.
Last position:
Release Train Engineer, Program Lead & Transformation Consultant - Freelancer at Telefónica Germany
- Transformation Consultant, Release Train Engineer and Program Lead – responsible for the new Way of Working in the Open Gateway Program; optimizing the flow of value by ensuring the ART events and artifacts function correctly, including the Open Gateway Release Train Kanban, Inspect & Adapt (I&A) workshop, ART Sync Meetings, and PI Planning to ensure stakeholder alignment;
- Coaching and guiding the Product Owners, Business Owners, Product Management, Program Managers, Leaders, Tribe Architect
- Coaching the OGW Core Team (cross functional) within the OGW Program and developing optimization measures in their transformation process;
- Facilitating and working actively towards the creation of the Definition of Ready (DoR) and the product Definition of Done (DoD);
- Introducing knowledge sharing workshops and grow the agile engineering practices;
- Hold Team lift-off workshops;
- Help the group to become a team by providing system team coaching and multifunctional learning;
- Facilitate, decision making, feedback loops for learning new skills and practices
Tools: JIRA, Confluence, MS Teams, Miro
Cristian P.
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 Z.
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
Mathias V.
Last position:
Fullstack AI Engineer at Ammodia.com
Developed a custom Kotlin Multiplatform app with a Spring backend and AI features.
Ben S.
Last position:
AI Trainer & Data Annotator at Scale AI
- RLHF & Model Evaluation: Evaluated, ranked, and refined Large Language Model (LLM) responses based on accuracy, reasoning quality, safety guidelines, and factual correctness.
- Data Annotation & Prompt Engineering: Created high-complexity prompts, edge-case scenarios, and gold-standard reference answers to train and fine-tune generative AI models.
- Quality Assurance & Verification: Conducted rigorous fact-checking, logical consistency validation, and multi-turn response optimization.
Jonas D.
Last position:
CEO at softwarebees GmbH
Umer D.
Last position:
Activation and Vocational Integration Program with Integrated Language Support at Berlitz
- Intensive language course with a focus on professional language content.
Rafael K.
Last position:
Senior Android Developer / Team-Lead at IBM Deutschland
- Further development and release support for a white-label ePA component for health insurance companies
- Technologies: Android (Kotlin), Kotlin Multiplatform, Coroutines, Jetpack Compose, MVVM, StateFlow, Gradle, ProGuard
Burak C.
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 K.
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 H.
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 K.
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
Anton K.
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 R.
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.
Anton A.
Last position:
Freelance Software Developer at Freelance Software Developer
- Developed the Chrome plugin 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
13 years
Position duration
2 years
Positions per freelancer
9
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Healthcare, Automotive
Certification focus areas
Information Technology, Product Development, Project Management
Bachelor's degree or higher
92%
Master's degree or higher
38%
Certifications per freelancer
3
Most common languages
German, English, Russian
Speak two or more languages
100%
Based on our profile pool as of 29 Oct 2026.
Daily rate distribution
The chart shows how the daily rates of experts in this technology in Germany are distributed, based on recent contracts on our platform. Each bar covers a rate range — its height shows the share of experts charging 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 29 Oct 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
Kotlin Multiplatform experts industry focus
See which industries our matched freelancers work in most often — every figure is calculated live from the freelancers on FRATCH.
- Information Technology (100%)
- Healthcare (67%)
- Automotive (60%)
- Food and Beverage (47%)
- Insurance (40%)
- Media and Entertainment (40%)
- Education (33%)
- Transportation (33%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Shared Kotlin code
Kotlin Multiplatform lets teams share code across Android, iOS, web, desktop and backend applications while keeping access to platform-specific APIs. It is often used to centralize domain logic, networking, data access and validation without forcing every interface into one universal layer.
Mobile architecture
Strong specialists design a clear boundary between shared modules and native user interfaces. They define state, error handling, dependency injection and data flows so Android and iOS teams can move independently while keeping core behavior consistent. Compose Multiplatform may also support shared presentation where the product benefits from it.
Ecosystem and tooling
Kotlin Multiplatform work commonly involves Kotlin, Gradle, Kotlin Coroutines, Kotlin Serialization and Ktor. Depending on the product, professionals also work with SQLDelight, Koin, Compose Multiplatform, Swift, SwiftUI, UIKit, Android Studio and Xcode. Build configuration and module ownership matter as much as language skills.
Where it fits
- Share authentication, API clients and business rules across mobile apps
- Coordinate offline storage and synchronization for Android and iOS
- Extend an existing Android codebase toward iOS without rewriting core logic
- Create common libraries for mobile, desktop, web or backend products
- Modernize a native application with gradual, testable code sharing
When companies need specialists
Companies bring in freelance expertise when a mobile team must reduce duplicated logic, establish a multiplatform foundation or resolve difficult build and integration issues. In Germany, specialists may support distributed teams remotely or collaborate on-site with product, design and native application groups. Clear documentation helps when several languages and time zones are involved.
What quality looks like
A capable professional knows where sharing creates value and where native implementation is the better choice. They test common modules independently, understand Swift and Android integration, manage Gradle and Xcode constraints, and monitor release behavior on real devices. Good delivery includes maintainable module boundaries, migration steps and practical ownership guidance for the internal team.
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, data models, validation and persistence across applications. Teams most often use it for Android and iOS products, while the same approach can also support desktop, web or backend code.
Kotlin Multiplatform shares selected code while allowing teams to keep native Android and iOS interfaces. Flutter and React Native usually promote a more unified interface layer, so the right choice depends on the desired user experience, existing skills, native API needs and appetite for shared UI.
A strong Kotlin Multiplatform specialist should understand Kotlin Coroutines, Gradle, Kotlin Serialization and API integration. Experience with Swift, SwiftUI or UIKit, Android application architecture, testing, CI pipelines and tools such as Ktor or SQLDelight is also valuable.
The right level depends on the scope, not simply on the technology name. A migration needs someone who can assess an existing Android or iOS codebase, while a new product needs architectural judgment, release planning and reliable integration between shared and native modules.
Yes. Kotlin Multiplatform projects are well suited to remote collaboration when repositories, build instructions and ownership boundaries are clear. For teams in Germany, shared working hours, strong written English or German communication, and access to mobile testing environments should be agreed at the start.
A company should reconsider Kotlin Multiplatform when the platforms have substantially different product rules or when the team cannot maintain both native toolchains. Sharing every layer can create friction; selective reuse is usually safer than forcing identical behavior or interfaces.
Ask how they choose shared versus native code, structure modules, handle concurrency and test platform integrations. A reliable Kotlin Multiplatform professional can explain trade-offs clearly and show how builds, releases, migrations and long-term ownership will work.
A typical Kotlin Multiplatform engagement may include a technical assessment, module architecture, shared libraries, platform integrations, tests and CI configuration. It should also provide documentation, migration guidance and a clear handover so the internal team can extend the codebase confidently.
The average hourly rate of freelancers in Germany who have used Kotlin Multiplatform in their recent projects is 84 €, which corresponds to a daily rate of about 669 € based on an 8-hour working day.
Of the freelancers in Germany who have used Kotlin Multiplatform in their recent projects, 92% hold at least a Bachelor's degree and 38% hold at least a Master's degree.
On average, freelancers in Germany who have used Kotlin Multiplatform in their recent projects have 13 years of professional experience, with a single engagement typically lasting around 2 years.
The most common languages among freelancers in Germany who have used Kotlin Multiplatform in their recent projects are German (93%), English (93%), and Russian (20%).
The most common industries among freelancers in Germany who have used Kotlin Multiplatform in their recent projects are Information Technology (100%), Healthcare (67%), and Automotive (60%).
The most common business areas among freelancers in Germany who have used Kotlin Multiplatform in their recent projects are Information Technology (100%), Product Development (100%), and Quality Assurance (53%).
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
