Hire the best Mobile Developers in Berlin matched in minutes from over 15,000 CVs with the power of AI
Bring in mobile app specialists for iOS, Android, Flutter, React Native, Kotlin, Swift, API integration, and app store releases. Get fast, precise matching with vetted, available freelancers who can join product work, fix legacy apps, or support a new launch.
About the role
App delivery
Mobile developers build and improve apps for iPhone, iPad, Android phones, and tablets. They turn product goals into stable releases, connect the app to back-end services, and keep the user experience smooth across devices.
- New app builds for consumer or internal use
- Feature work for existing iOS and Android apps
- API integration, authentication, and push notifications
- App Store and Google Play release support
- Bug fixes, performance work, and crash reduction
Core skills
A strong mobile developer knows platform rules, UI patterns, and mobile constraints. They work comfortably in Swift, Kotlin, Java, Dart, or JavaScript-based stacks, depending on the product and team.
- Native iOS and Android development
- Cross-platform apps with Flutter or React Native
- State handling, offline mode, and sync logic
- Testing, debugging, and release management
- Secure handling of data, login, and permissions
Tools and stack
The right person chooses tools that fit the app, not the other way around. In practice that often means Xcode, Android Studio, Git, CI/CD pipelines, analytics tools, and crash reporting. Many teams also need help with design handoff, API contracts, or migration from an older code base.
Strong mobile developers write maintainable code, document decisions, and collaborate well with product, design, and backend teams. They spot platform-specific edge cases early, such as device fragmentation, app lifecycle issues, or slow screens on older hardware.
When to bring one in
Companies usually hire a freelance mobile developer when work must start quickly, when a product team is missing app expertise, or when a release needs extra hands. Berlin-based startups, digital product teams, and companies with international user bases often need help on short notice for launches, redesigns, or rebuilds.
Remote collaboration works well for most app work, especially when the scope is clear and the team already has design and backend input in place. On-site time in Berlin can help during kick-off, planning, or complex workshops with stakeholders.
What good looks like
A strong mobile developer does more than write screens. They think about app architecture, release risk, and long-term maintainability from day one.
- Ships clean, readable code that others can extend
- Balances native platform quality with delivery speed
- Communicates blockers early and clearly
- Understands product goals, not just tickets
- Fixes bugs without breaking the release process
Typical specialisms
The role can vary by project. Some clients need an iOS developer for a polished Apple-first app. Others need an Android engineer for broad device support, a Flutter developer for one shared code base, or a React Native developer for a faster cross-platform build. In Berlin, this often comes up in fintech, mobility, media, ecommerce, and SaaS products where app quality directly affects adoption and retention.
Meet FRATCH Mobile Developers
Geza Lakatos
UX Consultant
Last position:
UX Strategist & AI App Developer (AI-assisted App Strategy) at Own Projects (Nutrycoach.ai, LuxuryBandit)
Conceptualizing and developing AI-powered app MVPs from the first idea to a working product. I combine UX strategy with modern AI and no-code tools — especially Claude and Claude Code, where I work directly in the terminal on real code (React, Vite), complemented by Figma, Bolt.new, and Base44 — to quickly validate and build product ideas. Personal platforms: Nutrycoach.ai (AI nutrition coaching with role-based dashboards for clients, coaches, and admins, AI meal analysis, and a scalable design system) and LuxuryBandit (content/creator app). This led to my own practice 'AI-assisted App Strategy', which combines human creativity, UX logic, and intelligent automation.
Matthias Zarzecki
Senior iOS & Flutter Developer
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
Matthias Zarzecki
Senior iOS & Flutter Developer
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
- Developed a Flutter app for eID ID card logins
- Focus: Flutter, iOS, eID, AusweisAppSDK, Mason, Keycloak, Agentic Coding, Arc42, Jenkins
Burak Ceylan
Senior Android Developer
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.
Burak Ceylan
Senior Android Developer
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.
- 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.
- 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.
Christopher Mäuer
Mobile & Full-Stack Engineer
Last position:
Mobile & Full-Stack Engineer at Propstack GmbH
- Refactored the mobile app by reimplementing stores, models, API client, screens and components using Typescript
- Added performant on-device storage for stores as preparation for offline mode
- Integrated RNUILib to achieve a minimal and modern UI design quickly
- Implemented native packages to provide additional features such as displaying of caller IDs
- Planned feature development and UX improvements following initial refactoring and redesign
Christopher Mäuer
Mobile & Full-Stack Engineer
Last position:
Mobile & Full-Stack Engineer at Propstack GmbH
- Refactored the mobile app by reimplementing stores, models, API client, screens and components using Typescript
- Added performant on-device storage for stores as preparation for offline mode
- Integrated RNUILib to achieve a minimal and modern UI design quickly
- Refactored the mobile app by reimplementing stores, models, API client, screens and components using Typescript
- Added performant on-device storage for stores as preparation for offline mode
- Integrated RNUILib to achieve a minimal and modern UI design quickly
- Implemented native packages to provide additional features such as displaying of caller IDs
- Planned feature development and UX improvements following initial refactoring and redesign
- Implemented native packages to provide additional features such as displaying of caller IDs
- Planned feature development and UX improvements following initial refactoring and redesign
Muhammad Zubair
Sr. Mobile Developer
Last position:
Sr. Mobile Developer at Firsty
- Worked on ideation phase through deployment; managed the team and implemented the core architecture
- Developed Firsty Travel eSim: native eSIM installation with a single click; seamless user authentication; real-time data synchronization; intuitive user interface design; advanced security protocols; integration with third-party services; high performance and scalability
- Developed WIO Business banking app: spend, save, invest, and control entire transaction process
- Technologies: Flutter, iOS, Android Studio
Muhammad Zubair
Sr. Mobile Developer
Last position:
Sr. Mobile Developer at Firsty
- Worked on ideation phase through deployment; managed the team and implemented the core architecture
- Developed Firsty Travel eSim: native eSIM installation with a single click; seamless user authentication; real-time data synchronization; intuitive user interface design; advanced security protocols; integration with third-party services; high
- Worked on ideation phase through deployment; managed the team and implemented the core architecture
- Developed Firsty Travel eSim: native eSIM installation with a single click; seamless user authentication; real-time data synchronization; intuitive user interface design; advanced security protocols; integration with third-party services; high performance and scalability
- Developed WIO Business banking app: spend, save, invest, and control entire transaction process
- Technologies: Flutter, iOS, Android Studio
performance and scalability
- Developed WIO Business banking app: spend, save, invest, and control entire transaction process
- Technologies: Flutter, iOS, Android Studio
Calin Calin
Senior iOS Developer
Last position:
Gorillas
- Successfully migrated 99.9% of the users to the new app by automatically logging them in using the token retrieved from the old app.
- Facilitated more than 400k signups in the first 3 months after releasing the redesigned app by supporting phone, Apple, Google, and Facebook authentication methods implemented using Firebase.
- Helped more than 250k users successfully add their address by supporting search using Google Places and by selecting the exact location using Google Maps based on the service delivery zones.
- Skills: Firebase Auth, Google Places, Google Maps, Segment, Adjust, Braze, Rich Push Notifications
Calin Calin
Senior iOS Developer
Last position:
Gorillas
- Successfully migrated 99.9% of the users to the new app by automatically logging them in using the token retrieved from the old app.
- Facilitated more than 400k signups in the first 3 months after releasing the redesigned app by supporting phone, Apple, Google, and Facebook authentication methods implemented using Firebase.
- Successfully migrated 99.9% of the users to the new app by automatically logging them in using the token retrieved from the old app.
- Facilitated more than 400k signups in the first 3 months after releasing the redesigned app by supporting phone, Apple, Google, and Facebook authentication methods implemented using Firebase.
- Helped more than 250k users successfully add their address by supporting search using Google Places and by selecting the exact location using Google Maps based on the service delivery zones.
- Skills: Firebase Auth, Google Places, Google Maps, Segment, Adjust, Braze, Rich Push Notifications
- Helped more than 250k users successfully add their address by supporting search using Google Places and by selecting the exact location using Google Maps based on the service delivery zones.
- Skills: Firebase Auth, Google Places, Google Maps, Segment, Adjust, Braze, Rich Push Notifications
Mathias Vogler
Senior Android Developer / Freelancer
Last position:
Senior Android Developer / Freelancer at Adevinta
- Further development of the classifieds app
- Android
- Kotlin
- Coroutines
- Jetpack Compose
Mathias Vogler
Senior Android Developer / Freelancer
Last position:
Senior Android Developer / Freelancer at Adevinta
- Further development of the classifieds app
- Android
- Kotlin
- Coroutines
- Jetpack Compose
- Further development of the classifieds app
- Android
- Kotlin
- Coroutines
- Jetpack Compose
Malte Schonvogel
Freelance iOS Developer
Last position:
Freelance iOS Developer at United Internet AG
- Under the brands Web.de, GMX, 1und1, and Mail.com, offers email and cloud services used daily by millions on iPhones.
- As part of a 10-person team, added new features, refactored legacy code, and increased test coverage.
- Features: Email and cloud access, compose email, email and cloud sync, news, contact, multiple account management, synchronization, notifications, premium features, ads.
- Technologies used: UIKit, SwiftUI, Combine, VIPER, Unit tests, UI tests, Snapshot tests, Fastlane, Cocoapods, MailCore.
Malte Schonvogel
Freelance iOS Developer
Last position:
Freelance iOS Developer at United Internet AG
- Under the brands Web.de, GMX, 1und1, and Mail.com, offers email and cloud services used daily by millions on iPhones.
- As part of a 10-person team, added new features, refactored legacy code, and increased test coverage.
- Under the brands Web.de, GMX, 1und1, and Mail.com, offers email and cloud services used daily by millions on iPhones.
- As part of a 10-person team, added new features, refactored legacy code, and increased test coverage.
- Features: Email and cloud access, compose email, email and cloud sync, news, contact, multiple account management, synchronization, notifications, premium features, ads.
- Technologies used: UIKit, SwiftUI, Combine, VIPER, Unit tests, UI tests, Snapshot tests, Fastlane, Cocoapods, MailCore.
- Features: Email and cloud access, compose email, email and cloud sync, news, contact, multiple account management, synchronization, notifications, premium features, ads.
- Technologies used: UIKit, SwiftUI, Combine, VIPER, Unit tests, UI tests, Snapshot tests, Fastlane, Cocoapods, MailCore.
Ronny Schrader
FileMaker/Mobile
Last position:
FileMaker/Mobile at MC Metall Chemie GmbH
Ronny Schrader
FileMaker/Mobile
Last position:
FileMaker/Mobile at MC Metall Chemie GmbH
Orhan Sönmez
Freelancer Web, React-Native- & Android Development
Last position:
Freelancer Web, React-Native- & Android Development at Freelancer Web, React-Native- & Android Development
- Analyzing the business requirements and deciding on technologies to use
- Implementation of native Android and iOS apps in React-Native
- Creation of custom libraries for React-Native according to customers’ needs
Discover over 15,000 top freelancers
Mobile Developers statistics
Aggregated from the professional profiles of matched freelancers.
Experience
16 years
Position duration
2.1 years
Positions per freelancer
12
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Media and Entertainment, Food and Beverage
Certification focus areas
Information Technology, Business Intelligence, Legal
Bachelor's degree or higher
75%
Master's degree or higher
13%
Certifications per freelancer
1
Most common languages
German, English, French
Speak two or more languages
90%
Daily Rate Distribution
The chart shows how the daily rates of freelancers in this role 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. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
Average rates for Mobile Developers & Seniority distribution
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.
Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
Frequently Asked Questions
Looking for clear information? Everything important about FRATCH is here
A Mobile Developer builds, improves, and maintains apps for iOS and Android. They may work on new features, app redesigns, bug fixes, store releases, or integrations with backend services. In many projects, they also help shape the technical approach so the app remains stable after launch.
Look for strong platform knowledge, solid debugging skills, and experience with the stack your app uses. A good mobile developer should understand app lifecycle, API integration, testing, and release workflows. If your product is cross-platform, check for real experience with Flutter or React Native rather than only general app knowledge.
The title mobile developer usually means someone focused on phone and tablet apps, not web or desktop software. An app developer can mean the same thing, but software engineer is broader and may include backend or infrastructure work. When hiring, ask what platforms and code bases they have actually shipped.
A freelance mobile developer is a good fit when you need speed, a short-term skill gap filled, or extra capacity for a release. This is common for app relaunches, migrations, urgent bug fixing, or building a first version before expanding the team. It also helps when you need senior input without adding a long hiring cycle.
Yes, most mobile work can be done remotely as long as communication is clear and the team shares a backlog, designs, and API access. For a Berlin team, remote collaboration often works well for implementation and testing. On-site time can still help for planning sessions, stakeholder reviews, or when a product needs close coordination with local teams.
It depends on your product and release plan. A Mobile Developer with native iOS or Android expertise is best when you need deep platform quality, while Flutter or React Native makes sense if one code base should serve both platforms. Choose the person whose background matches your app architecture, not just the job title.
Check shipped apps, code quality, and how they talk about trade-offs. A strong candidate can explain architecture choices, testing strategy, release handling, and how they reduced bugs or improved performance. If they only talk about frameworks and not outcomes, that is a warning sign.
Berlin clients often want direct communication, practical delivery, and people who can work with product and design teams without much handholding. A Mobile Developer may join startups, agencies, or in-house teams, either remotely or partly on-site. English is common in tech teams, but clear written updates matter just as much as language level.
The average hourly rate for Mobile Developers in Berlin is 84 €, which corresponds to a daily rate of about 672 € based on an 8-hour working day.
Of the freelancers working as Mobile Developers in Berlin, 75% hold at least a Bachelor's degree and 13% hold at least a Master's degree.
On average, freelancers working as Mobile Developers in Berlin have 16 years of professional experience, with a single engagement typically lasting around 2.1 years.
The most common languages among freelancers working as Mobile Developers in Berlin are German (100%), English (90%), and French (20%).
The most common industries among freelancers working as Mobile Developers in Berlin are Information Technology (100%), Media and Entertainment (70%), and Food and Beverage (60%).
The most common business areas among freelancers working as Mobile Developers in Berlin are Information Technology (100%), Product Development (100%), and Quality Assurance (40%).
FRATCH Mobile Developers main locations
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
Get in touch with the FRATCH team and we will get back to you within 4 hours.
Would you rather directly get in touch?
We always have the time for a call or email!
Philipp Thomaschewski
FRATCH CEO
