Koin Experts in Germany
for clean Kotlin applications, matched in minutes with AIHire experts who design Koin modules, test dependency graphs and integrate Kotlin applications with Android, Ktor or Spring Boot. FRATCH connects you with vetted, available freelancers through fast, precise AI matching.
Meet FRATCH Experts in Germany, who have recently used Koin
Mathias V.
Last position:
Fullstack AI Engineer at Ammodia.com
Developed a custom Kotlin Multiplatform app with a Spring backend and AI features.
Patrick W.
Last position:
AI Software Engineer at IppenMedia
- Analysis
- Consulting
- Software design
- Development
- Automation
- Testing
- Deployment
- Architecture, development and deployment of various proof-of-concept applications around the integration of current AI interfaces including conversational, realtime voice, images and videos
- Developed best practices for working with agentic systems and AI in practice
- Created code templates
Ahmet C.
Last position:
Senior Android Developer at enbw
- Support in restructuring and designing the group's internal Android apps
- Defining essential modules and implementing accessible components
- Establishing agile approaches at an international level
- Technologies & Methods: Kotlin, Android, JUnit 5, Koin, Azure DevOps, Android Studio, Git, Jetpack Compose, Coil, Flow API, Ktor, Coroutines, TypeScript, Node.js
Steven M.
Last position:
Freelance Trainer at TÜV Rheinland Akademie
- Practical seminar “Generative AI in Software Development”
- Mobile apps and cloud computing
- Internet of Things, smart home, and consumer healthcare
- The future of mobile communication
Matthias E.
Last position:
Lead Android Developer at Star Finanz-Software Entwicklung und Vertriebs GmbH
- Further development of the Android app "StarMoney"
- Major XML to Compose redesigns
- Introduction of new technologies and architecture
- Implementation of instant bank transfer
- Development following the agile Scrum process
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
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
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.
Discover over 15,000 top freelancers
Statistics of experts using Koin
Aggregated from the professional profiles of matched freelancers.
Experience
14 years
Position duration
1.5 years
Positions per freelancer
14
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Healthcare, Transportation
Certification focus areas
Information Technology, Product Development, Research and Development
Bachelor's degree or higher
90%
Master's degree or higher
50%
Certifications per freelancer
2
Most common languages
German, English, Turkish
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 Koin
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.
Koin 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 (73%)
- Transportation (64%)
- Automotive (55%)
- Insurance (45%)
- Retail (45%)
- Education (36%)
- Banking and Finance (36%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
What Koin does
Koin is a lightweight dependency injection framework for Kotlin and Kotlin Multiplatform. It lets teams define services, repositories, view models and other dependencies in readable Kotlin modules instead of relying on generated code or complex annotations. Koin is commonly used in Android applications, backend services and shared multiplatform code.
Where it fits
Koin works well when a Kotlin codebase needs clear object creation, replaceable implementations and simple test setup. It integrates with Android components, Jetpack, Ktor, Spring Boot and Kotlin Multiplatform, while its DSL keeps configuration close to the application code. Teams can start small and expand modules as systems grow.
Typical project work
- Set up Koin modules for Android applications and shared Kotlin code
- Connect repositories, use cases, view models and network clients
- Configure scopes for screens, sessions and feature lifecycles
- Replace production dependencies with test doubles
- Migrate from manual wiring or another injection approach
Ecosystem and tooling
Strong Koin specialists understand Kotlin language features, Gradle builds and the lifecycle rules of the target runtime. They may work with Jetpack Compose, Android ViewModel, Ktor clients, SQLDelight, Retrofit or Spring Boot. Familiarity with Koin annotations, module verification, logging and startup diagnostics helps keep dependency graphs transparent and maintainable.
When freelance expertise helps
Companies often bring in a Koin professional when a Kotlin codebase has fragile initialization, unclear scopes or slow tests. External support is also useful during an Android architecture change, a Kotlin Multiplatform rollout, a migration from Dagger or Hilt, or a handover between teams. In Germany, remote collaboration is common, while on-site workshops can help align product, mobile and backend teams.
What quality looks like
A strong Koin expert keeps modules focused, names bindings clearly and chooses scopes that match real lifecycles. They test resolution paths, explain trade-offs and avoid hiding application structure behind excessive indirection. Good delivery includes documented modules, reliable startup behavior, testable components and a practical plan for future Kotlin features or platform targets.
Frequently asked questions
Curious about Koin? Here are the answers that come up again and again.
Koin provides dependency injection for Kotlin applications. It manages how services, repositories, clients and view models are created and supplied, which makes components easier to replace in tests and simpler to wire across Android, backend or multiplatform code.
Koin uses a Kotlin DSL and runtime resolution, while Dagger and Hilt rely heavily on compile-time code generation and annotations. Koin can be quicker to read and introduce, whereas Dagger or Hilt may suit teams that prioritise compile-time graph validation in large Android systems.
A strong Koin specialist should also understand Kotlin, Gradle and the application runtime. For Android work, Jetpack, Compose, lifecycle handling and testing matter; backend projects may require Ktor, Spring Boot, persistence and API integration knowledge.
The required depth depends on the dependency graph and the target platforms. A small Kotlin application may need help with module structure and tests, while a large Android or multiplatform system benefits from an expert who has handled scopes, migrations, diagnostics and team documentation.
Koin supports Kotlin Multiplatform and can provide shared dependency definitions across supported targets. The specialist should still understand platform-specific lifecycles, expect and actual implementations, test setup and how shared modules interact with Android or iOS application code.
Koin projects are generally well suited to remote work because module definitions, tests and architecture decisions can be reviewed in repositories and shared documentation. On-site sessions may help with complex migrations or workshops, while German or English communication should match the wider project team.
Ask the Koin specialist to explain module boundaries, lifecycle scopes and failure handling in plain language. Review whether resolution paths are tested, dependencies are replaceable, startup remains predictable and the design avoids unnecessary global state or hidden coupling.
Koin may be less suitable when a team requires strict compile-time validation for a very large dependency graph or already has deep investment in generated injection code. An expert should compare Koin with Hilt, Dagger or manual construction against the project’s build, testing and maintenance needs rather than choosing by habit.
The average hourly rate of freelancers in Germany who have used Koin in their recent projects is 86 €, which corresponds to a daily rate of about 685 € based on an 8-hour working day.
Of the freelancers in Germany who have used Koin in their recent projects, 90% hold at least a Bachelor's degree and 50% hold at least a Master's degree.
On average, freelancers in Germany who have used Koin in their recent projects have 14 years of professional experience, with a single engagement typically lasting around 1.5 years.
The most common languages among freelancers in Germany who have used Koin in their recent projects are German (100%), English (91%), and Turkish (18%).
The most common industries among freelancers in Germany who have used Koin in their recent projects are Information Technology (100%), Healthcare (73%), and Transportation (64%).
The most common business areas among freelancers in Germany who have used Koin in their recent projects are Information Technology (100%), Product Development (100%), and Quality Assurance (64%).
Main locations of FRATCH Experts, who have recently used Koin
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
