VinciFi, a finance app with more than 50,000 users, is hiring a Frontend / App-Entwickler (m/w/d) in the Greater Hamburg Area. You will build the app with React Native, Flutter or native iOS and Android and take new features from the first idea to release, with C#/.NET as a welcome extra for backend work.
About VinciFi
Product: A finance app for private investors
Users: More than 50,000
Content: Financial news, in-depth stock analyses and clearly presented market data
Aim: Content and features that are professionally convincing and easy to use
Tech & Role Focus
Cross-Platform: React Native with TypeScript or JavaScript, or Flutter with Dart
Native iOS: Swift, ideally SwiftUI or UIKit
Native Android: Kotlin or Java, ideally Jetpack Compose
Backend (Optional): C#/.NET, ASP.NET Core, REST APIs and databases
Position Overview
As App Developer, you develop and improve the VinciFi mobile app, using React Native, Flutter or native iOS and Android depending on your focus and the product’s needs. You turn designs into intuitive interfaces with care for typography, spacing and animation, build clear views for stock analyses, news and interactive charts, connect APIs and handle loading, error and empty states cleanly. You also analyse bugs, speed up load times and write reusable, maintainable components.
Why This Role Matters: A finance app lives or dies on clarity. This role suits a developer with an eye for design who wants real ownership: you help shape features from the first idea to the store release.
Key Responsibilities
App Development
- Develop and improve mobile apps with React Native, Flutter or native iOS and Android, depending on your focus and the product
- Turn design drafts into intuitive interfaces with care for typography, spacing, animation and smooth use
Finance Data & APIs
- Build clear views for stock analyses, news and interactive charts
- Connect APIs and ensure reliable data handling with clean loading, error and empty states
Quality & Ownership
- Analyse bugs, improve load times and build reusable, maintainable components
- Think features through, suggest improvements and report progress and obstacles early
- Optionally help build APIs and backend functions if you know C#/.NET
Qualifications
Technical Focus
- React Native: mobile apps with TypeScript or JavaScript
- Flutter: app development with Dart
- Native iOS: Swift, ideally SwiftUI or UIKit
- Native Android: Kotlin or Java, ideally Jetpack Compose
- C# and .NET experience is expressly welcome, for example ASP.NET Core, REST APIs or databases
Experience & Skills
- Experience building mobile apps, ideally shown through published apps or own projects
- Good grasp of app architecture, state management, navigation and API integration
- An eye for high-quality interfaces and careful, consistent design implementation
- Confident with Git, structured debugging, code reviews and sensible testing
- Independent, reliable working style and clear team communication
Nice to Have
- Apple App Store or Google Play releases
- Push notifications, authentication and in-app subscriptions
- Data visualisation, interactive charts or frequently updated data
- Interest in stocks, financial markets and digital finance products
About VinciFi
VinciFi is a finance app with more than 50,000 users. It gives private investors access to financial news, well-founded stock analyses and clearly presented market data. Its aim is content and features that convince on substance and are just as pleasant to use.
How to Apply: Send your CV, ideally with links to apps, projects or your GitHub profile. Say briefly which technologies you know, which tasks you have handled yourself and where your focus lies. The posting gives no email address, link, salary figure or named contact, so use the original listing to apply.
Who Should Apply?
- React Native Developers: With TypeScript skills
- Flutter Developers: Who ship polished UIs
- iOS and Android Developers: Using Swift or Kotlin
- .NET Developers: Interested in mobile work
- Hamburg Talent: Drawn to fintech and design
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