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Qays A., Senior Flutter + Android Engineer

Last Updated: 14 Mar 2024

- 5+ years of experience in the IT industry - Code in multiple languages, with interest in Flutter/Dart, JavaScript/TypeScript/React/NodeJS and Ruby - Worked with Flutter since the initial release date - Fluent English - Fluent Arabic - Available ASAP

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Flutter   6 yr.


Android   6 yr.

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Artem B., Flutter developer

Kharkiv, Ukraine
Last Updated: 18 Sep 2023

- Experienced Flutter developer with over 6 years of experience in software development. - Proficient in using Flutter and various related technologies such as Firebase Realtime Database, Firebase Cloud Firestore, Firebase Auth, Google Auth, Facebook Auth, Firebase Cloud Storage, Crashlytics, Analytics, Push Notifications, Background Location, Localization, Google Maps, Stripe, REST API, AWS S3, BloC, MVVM, Flutter Web, and Git flow. - Strong background in computer science with a Specialist's degree from "O.M.Beketov" National University of Urban Economic and Java Core courses at JavaRush. - Skilled in both team collaboration and independent work, with a track record of creating applications from scratch and implementing functions according to design requirements. - Experienced in developing cross-platform mobile applications using Flutter and React-Native. - Familiar with various development methodologies, principles, paradigms, and patterns. - Proficient in SDLC and software development practices. - Strong technical expertise in mobile app development, particularly in the domains of crypto wallets, credit management, Bluetooth device monitoring, housing services management, charity platforms, and location tracking. - Proven ability to deliver high-quality software solutions and achieve results in a timely manner.

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Flutter   6 yr.

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Yuliia K., Flutter Software Engineer

Last Updated: 4 Jul 2023

- 2+ years of experience developing mobile apps with Flutter - Participated in projects full-cycle development from scratch - Has experience with native Android/iOS SDKs - Has basic experience with JS, React - Intermediate English - Available ASAP

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Andrii S., Senior Flutter Developer

Cherkasy, Ukraine
Last Updated: 4 Jul 2023

7 years of professional expertise in IT industry; Android developer with 5+ years of experience Flutter developer with 2+ years of experience

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Oleg Z., Flutter Software Engineer

Plovdiv, Bulgaria
Last Updated: 4 Jul 2023

- Software Developer with 4 years of professional experience in mobile and enterprise apps development. - 2 years of experience as a mobile developer using Flutter - 3 years of experience with Java - Upper-Intermediate English - Available ASAP

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Table of Contents

TOP 12 Tech facts and history of creation and versions about Flutter Development

  • Flutter is an open-source UI software development kit created by Google in 2015.
  • The main goal of Flutter is to enable developers to build beautiful and high-performance apps for multiple platforms using a single codebase.
  • Flutter uses a reactive and declarative programming model, which means that the UI is built based on the current state of the app and automatically updates when the state changes.
  • The first stable release of Flutter was in December 2018, and it has since gained popularity among developers worldwide.
  • Flutter was developed by a team led by Chris Sells and Tim Sneath at Google.
  • One of the groundbreaking features of Flutter is its hot reload functionality, which allows developers to see the changes they make in the code instantly reflected in the app without losing the current app state.
  • Flutter apps are written in Dart, a programming language also developed by Google, which offers a modern and efficient syntax.
  • Flutter provides a rich set of pre-designed widgets, allowing developers to create beautiful and consistent UIs across different platforms.
  • Flutter has a growing community of developers and contributors, which means that there is a wealth of resources and support available for those using the framework.
  • Flutter has been adopted by major companies such as Alibaba, Tencent, and Philips, showcasing its suitability for building production-ready apps.
  • Google has been actively investing in Flutter’s development and improvement, regularly releasing new versions and updates to address user feedback and add new features.
  • Flutter’s performance is comparable to that of native apps, thanks to its use of the Skia graphics engine and its ability to compile directly to machine code.

Pros & cons of Flutter

8 Pros of Flutter

  • Fast Development: Flutter uses a hot reload feature that allows developers to see the changes instantly, resulting in faster development cycles.
  • Single Codebase: With Flutter, you can write a single codebase for both iOS and Android platforms, reducing development time and effort.
  • Beautiful UI: Flutter provides a rich set of customizable widgets that can create visually appealing and native-looking user interfaces.
  • High Performance: Flutter’s architecture allows it to directly access platform-specific features, resulting in high-performance applications.
  • Excellent Documentation: Google, the creator of Flutter, provides comprehensive and up-to-date documentation, making it easier for developers to learn and use the framework.
  • Open-source: Flutter is an open-source framework, which means it has a large and active community that continuously contributes to its improvement.
  • Wide Range of Libraries: Flutter has a vast ecosystem of libraries and packages that extend its functionality, allowing developers to add features easily.
  • Strong Support for Testing: Flutter has built-in support for testing, making it easier to write and run tests for your applications.

8 Cons of Flutter

  • Large File Size: Flutter applications have larger file sizes compared to native applications due to the inclusion of the Flutter engine.
  • Learning Curve: If you are new to Flutter or Dart (the programming language used with Flutter), there might be a learning curve to overcome before becoming proficient.
  • Limited Native Features: Although Flutter provides access to platform-specific features, it may not support all the native functionalities available on iOS and Android.
  • Third-party Dependencies: As Flutter is a relatively new framework, there may be limited third-party dependencies available compared to more established frameworks.
  • Less Mature Ecosystem: While Flutter has a growing ecosystem, it may not be as mature as other frameworks like React Native or native development.
  • Plugin Compatibility: Some plugins in Flutter may not be compatible with all platforms, requiring additional effort to find alternatives or workarounds.
  • Platform-specific Bugs: Due to the differences between iOS and Android, there may be platform-specific bugs or inconsistencies that developers need to address.
  • Limited IDE Support: Although Flutter has good IDE support with tools like Android Studio and Visual Studio Code, it may not have the same level of support as native development.

Cases when Flutter does not work

  1. Unsupported Platforms: Flutter is primarily designed to work on iOS and Android platforms. However, it does not support other less popular platforms such as Windows Phone, Blackberry, and Tizen. If you are targeting any of these platforms, Flutter might not be the ideal choice for your development.
  2. Performance Limitations: While Flutter offers excellent performance for most applications, it may not be suitable for highly complex and computationally intensive applications. In such cases, using native development languages like Java or Kotlin for Android, or Swift or Objective-C for iOS, could provide better performance.
  3. Limited Native Feature Support: Although Flutter provides access to many native features and APIs, it may not support all the features available on a particular platform. This can be a limitation if your app heavily relies on specific platform-specific functionalities that are not yet available in Flutter.
  4. Large App Size: Flutter apps tend to have a larger file size compared to native apps. This is because Flutter apps include a complete Flutter engine, which adds to the overall size. If minimizing app size is a critical requirement for your project, you may need to consider native development instead.
  5. Learning Curve: Flutter uses a unique programming language called Dart, which might not be familiar to all developers. If your development team does not have prior experience with Dart, there will be a learning curve involved in adopting Flutter. This could impact the development timeline and productivity initially.

TOP 10 Flutter Related Technologies

  • Languages: Dart

    Dart is the primary programming language used for Flutter development. It is a versatile and object-oriented language known for its performance and ease of learning. Dart offers features like just-in-time (JIT) compilation, hot reload, and a strong type system, making it an ideal choice for building Flutter apps.

  • Framework: Flutter SDK

    Flutter SDK is a comprehensive framework developed by Google for building cross-platform apps. It provides a rich set of pre-built UI components, along with a reactive programming model, which allows developers to create visually appealing and responsive apps. Flutter SDK follows a single codebase approach, enabling developers to write code once and deploy it on multiple platforms.

  • Integrated Development Environment (IDE): Visual Studio Code

    Visual Studio Code (VS Code) is a popular choice among Flutter developers due to its lightweight yet powerful features. It offers excellent support for Dart and Flutter development, including features like code completion, debugging tools, and seamless integration with Flutter’s hot reload feature. VS Code also has a vast collection of extensions that further enhance the development experience.

  • State Management: Provider

    Provider is a state management library widely used in Flutter applications. It follows the InheritedWidget pattern and offers a simple yet efficient way to manage and share state across different widgets. Provider’s unidirectional data flow and minimal boilerplate code make it an excellent choice for managing app state in Flutter projects.

  • Networking: Dio

    Dio is a powerful HTTP client library for Dart, commonly used for network requests in Flutter apps. It provides a straightforward and intuitive API for making HTTP requests, handling timeouts, intercepting requests, and more. Dio also supports features like file uploading, request cancellation, and response serialization, making it a robust choice for handling network operations.

  • Database: sqflite

    sqflite is a widely used package for local database operations in Flutter apps. It provides a simple and efficient way to interact with SQLite databases, allowing developers to store and retrieve data locally. sqflite offers features like query execution, data manipulation, and transaction support, making it suitable for various data storage requirements in Flutter projects.

  • Testing: Flutter Testing Framework

    Flutter Testing Framework is an integral part of Flutter SDK, offering a comprehensive set of tools for testing Flutter apps. It supports unit testing, widget testing, and integration testing, allowing developers to ensure the quality and functionality of their applications. The testing framework provides features like test-driven development (TDD) support, test coverage analysis, and easy integration with popular testing frameworks like Mockito.

What are top Flutter instruments and tools?

  • Flutter: Flutter is an open-source UI software development kit created by Google. It was first released in May 2017 and has gained immense popularity since then. Flutter allows developers to build native-like apps for multiple platforms, including iOS, Android, web, and desktop, using a single codebase. With its hot reload feature, developers can instantly see the changes they make in the code, making the development process faster and more efficient.
  • Dart: Dart is the programming language used to build Flutter apps. It was also developed by Google and was first announced in 2011. Dart is known for its fast performance and its ability to compile into native code. It provides features like strong typing, garbage collection, and asynchronous programming, making it a suitable language for building complex and responsive Flutter applications.
  • Android Studio: Android Studio is the official integrated development environment (IDE) for Android app development. It provides extensive support for Flutter, including a dedicated Flutter plugin that offers features like code completion, debugging, and project templates. Android Studio is widely used by Flutter developers due to its robust set of tools and seamless integration with Flutter projects.
  • Visual Studio Code: Visual Studio Code (VS Code) is a lightweight yet powerful code editor developed by Microsoft. It has gained popularity among Flutter developers for its extensive Flutter extension, which provides features like IntelliSense, debugging, and code formatting. VS Code offers a seamless development experience for Flutter apps and is widely used for Flutter development across different platforms.
  • Firebase: Firebase is a comprehensive mobile and web development platform provided by Google. It offers a wide range of services, including hosting, authentication, real-time database, cloud functions, and more. Flutter developers often integrate Firebase into their apps to leverage its powerful backend capabilities and simplify tasks like user management, data storage, and cloud messaging.
  • Flutter Inspector: Flutter Inspector is a tool that comes bundled with Flutter SDK and allows developers to inspect and debug their Flutter apps. It provides a visual representation of the app’s widget tree, helping developers identify and resolve UI-related issues. It also offers performance profiling capabilities, allowing developers to optimize their app’s performance and identify potential bottlenecks.
  • Flutter DevTools: Flutter DevTools is a suite of performance and debugging tools that provides insights into the inner workings of Flutter apps. It includes features like CPU and memory profiling, network monitoring, and widget inspector. Flutter DevTools helps developers analyze and optimize their app’s performance, making it an essential tool for building high-quality Flutter applications.
  • Flutter Packages: Flutter Packages is a repository of reusable Flutter components and libraries contributed by the Flutter community. It allows developers to easily discover and integrate pre-built functionalities into their apps, saving time and effort. Flutter Packages covers a wide range of categories, including UI components, networking, state management, and more, providing developers with a vast ecosystem of ready-to-use solutions.

Soft skills of a Flutter Developer

Soft skills are essential for a Flutter Developer as they complement the technical expertise and contribute to overall success in a professional setting.


  • Communication: Effectively conveying ideas and updates to team members and stakeholders.
  • Problem Solving: Identifying and resolving issues efficiently to ensure smooth development processes.
  • Adaptability: Being open to learning new technologies and adapting to changing project requirements.
  • Collaboration: Working well in a team environment, sharing knowledge and supporting colleagues.
  • Time Management: Organizing and prioritizing tasks to meet deadlines effectively.


  • Leadership: Taking initiative and guiding junior developers, fostering a positive work environment.
  • Critical Thinking: Analyzing complex problems and finding innovative solutions.
  • Client Management: Building strong relationships and understanding client needs to deliver successful projects.
  • Conflict Resolution: Resolving conflicts or disagreements within the team in a diplomatic manner.
  • Attention to Detail: Ensuring accuracy and precision in coding and project implementation.
  • Self-Motivation: Being proactive and driven to continuously improve skills and knowledge.
  • Empathy: Understanding and considering the perspectives and needs of others in the team.


  • Mentoring: Guiding and mentoring junior and middle developers, sharing expertise and best practices.
  • Strategic Thinking: Aligning development goals with broader business objectives.
  • Project Management: Overseeing the entire project lifecycle, including planning, execution, and delivery.
  • Negotiation: Effectively negotiating contracts, timelines, and resources with clients and stakeholders.
  • Innovation: Identifying and implementing new technologies or approaches to enhance development processes.
  • Team Building: Fostering a collaborative and cohesive team culture, promoting growth and success.
  • Public Speaking: Delivering presentations and representing the team in conferences or industry events.
  • Decision Making: Making informed and timely decisions based on project requirements and constraints.

Expert/Team Lead

  • Strategic Planning: Developing long-term plans and roadmaps for technology and product development.
  • Business Acumen: Understanding the market and industry trends to drive business growth.
  • Risk Management: Identifying and mitigating potential risks and challenges in development projects.
  • Stakeholder Management: Building and maintaining strong relationships with key stakeholders.
  • Conflict Management: Resolving conflicts at a higher level and ensuring a harmonious work environment.
  • Thought Leadership: Contributing to the industry through publications, speaking engagements, etc.
  • Business Development: Identifying and pursuing new business opportunities for the team or organization.
  • Strategic Hiring: Identifying and recruiting top talent to build high-performing development teams.
  • Continuous Learning: Staying updated with the latest trends and advancements in Flutter and related technologies.
  • Quality Assurance: Ensuring high-quality code and adherence to best practices through code reviews and testing.
  • Technical Expertise: Demonstrating deep knowledge and expertise in Flutter and related technologies.

Let’s consider Difference between Junior, Middle, Senior, Expert/Team Lead developer roles.

Seniority NameYears of experienceResponsibilities and activitiesAverage salary (USD/year)
Junior0-2 yearsJunior developers typically work under the guidance of more experienced developers. They focus on learning and gaining practical experience in coding and development. Some of the tasks and responsibilities of junior developers include:$50,000 – $70,000
Middle2-5 yearsMiddle developers have gained a solid foundation of experience and are capable of working independently on assigned tasks. They are responsible for implementing new features and functionalities and may also be involved in code reviews and mentoring junior developers. Some of the tasks and responsibilities of middle developers include:$70,000 – $90,000
Senior5-10 yearsSenior developers have extensive experience and expertise in their chosen technology stack. They are often involved in designing complex systems, leading development projects, and providing technical guidance to the team. Some of the tasks and responsibilities of senior developers include:$90,000 – $120,000
Expert/Team Lead10+ yearsExpert or Team Lead developers are highly experienced professionals who have a deep understanding of the technology and domain. They take on leadership roles, manage teams, and are responsible for the overall success of projects. They also provide technical expertise and guidance to the team. Some of the tasks and responsibilities of expert/team lead developers include:$120,000 – $150,000+

TOP 12 Facts about Flutter

  • Flutter is an open-source UI software development kit (SDK) created by Google, which allows developers to build natively compiled applications for mobile, web, and desktop from a single codebase.
  • Flutter was initially released in May 2017 and has gained significant popularity among developers due to its fast development cycles, expressive and flexible UI, and high performance.
  • One of the key features of Flutter is its “Hot Reload” functionality, which enables developers to instantly see the changes they make to the code reflected in the app’s UI, making the development process more efficient and productive.
  • Flutter uses the Dart programming language, which was also developed by Google, and provides a rich set of pre-designed widgets that help in creating visually appealing and responsive user interfaces.
  • With Flutter, developers can create apps that run smoothly on both iOS and Android platforms, using a single codebase. This significantly reduces development time and effort compared to building separate apps for each platform.
  • Flutter’s performance is often comparable to that of native applications, thanks to its use of a high-performance rendering engine called Skia, which allows for smooth animations and transitions.
  • Flutter has a growing community of developers and enthusiasts, offering extensive support and resources, including documentation, tutorials, and packages on platforms like pub.dev, making it easier for developers to find solutions and enhance their apps.
  • Google actively maintains and updates Flutter, ensuring compatibility with the latest versions of iOS and Android, as well as frequently releasing new features and improvements.
  • Flutter has been adopted by several well-known companies, including Alibaba, Tencent, and Square, for building their mobile applications, demonstrating its reliability and scalability for real-world projects.
  • Flutter’s popularity is also reflected in its number of stars on GitHub, where it has over 132,000 stars at the time of writing, indicating a strong developer community and interest in the framework.
  • Flutter has a wide range of plugins and packages available, allowing developers to integrate various functionalities such as Firebase, SQLite, and Bluetooth, further expanding the capabilities of their applications.
  • Flutter’s cross-platform nature also extends to the web and desktop, allowing developers to target multiple platforms without the need for extensive platform-specific code, making it a versatile choice for building multi-platform applications.

How and where is Flutter used?

Case NameCase Description
Google AdsFlutter is used by Google Ads to develop their mobile app. This allows advertisers to create and manage their ad campaigns directly from their mobile devices. Flutter’s fast rendering engine and customizable widgets make it an ideal choice for building a smooth and visually appealing user interface for the Google Ads app.
AlibabaAlibaba, one of the world’s largest e-commerce companies, uses Flutter to power their Xianyu app. Xianyu is a popular online marketplace in China, and Flutter enables Alibaba to deliver a high-performance and consistent user experience across both Android and iOS platforms.
Realtor.comRealtor.com, a leading real estate website, leverages Flutter to develop their mobile app. With Flutter, Realtor.com can provide users with a seamless and intuitive property search experience, incorporating features such as filtering, map integration, and real-time updates on property listings.
ReflectlyReflectly, a popular journaling app, chose Flutter as their development framework. Flutter’s hot reload feature greatly speeds up the development process for Reflectly, allowing the team to iterate quickly and deliver new features to their users more efficiently.
Hamilton MusicalThe official Hamilton app, created for the renowned Broadway musical, is built using Flutter. Flutter’s cross-platform capabilities enabled the development team to create a single codebase that runs smoothly on both iOS and Android, helping to provide a consistent experience for fans of the show.
NubankNubank, a leading digital bank in Brazil, relies on Flutter for their mobile app. Flutter’s performance and ability to deliver a native-like experience make it an ideal choice for Nubank to provide their customers with seamless access to their financial services.
ReflectlyReflectly, a popular journaling app, chose Flutter as their development framework. Flutter’s hot reload feature greatly speeds up the development process for Reflectly, allowing the team to iterate quickly and deliver new features to their users more efficiently.
ToplineTopline, a news and content aggregation app, utilizes Flutter for its development. With Flutter, Topline can deliver a visually appealing and responsive user interface, allowing users to easily browse and consume news articles from various sources.
Abbey Road StudiosAbbey Road Studios, the iconic recording studio where artists like The Beatles and Adele have recorded, adopted Flutter for their app development. Flutter’s ability to create beautiful and smooth user interfaces helps Abbey Road Studios provide a user-friendly experience for musicians and audio professionals using their app.

Hard skills of a Flutter Developer

Flutter is a powerful framework for building cross-platform mobile applications with a single codebase, and being a successful Flutter developer requires a specific set of hard skills. Here is an overview of the hard skills required for Flutter developers at different levels:


  • Flutter Development: Proficiency in developing mobile applications using Flutter framework.
  • Dart Programming: Strong knowledge of Dart programming language.
  • User Interface (UI) Design: Ability to create visually appealing and responsive UI designs.
  • State Management: Understanding of state management techniques like Provider, BLoC, or Redux.
  • Debugging and Testing: Experience in debugging and testing Flutter applications.


  • Advanced Flutter Development: In-depth knowledge of advanced Flutter concepts and APIs.
  • Architecture Patterns: Familiarity with different architectural patterns like MVVM, MVC, or Clean Architecture.
  • Database Integration: Experience in integrating databases like SQLite or Firebase into Flutter applications.
  • API Integration: Proficiency in integrating RESTful APIs into Flutter apps using packages like Dio or http.
  • Performance Optimization: Ability to optimize app performance by implementing efficient coding practices.
  • Code Review and Collaboration: Understanding of code review processes and collaboration with team members.
  • Version Control: Proficiency in using version control systems like Git for code management.


  • Advanced UI/UX Design: Ability to create complex and custom UI/UX designs.
  • Performance Tuning: Expertise in optimizing app performance through advanced techniques.
  • Design Patterns: Proficiency in implementing design patterns like Singleton, Observer, or Factory.
  • Team Leadership: Experience in leading a team of developers and guiding them in Flutter development.
  • Code Refactoring: Ability to refactor existing code to improve its readability, maintainability, and efficiency.
  • Continuous Integration/Deployment: Understanding of CI/CD processes for automated build and deployment.
  • Code Documentation: Skill in documenting code to enhance its readability and maintainability.
  • Problem Solving: Ability to troubleshoot and solve complex issues in Flutter applications.

Expert/Team Lead

  • Advanced State Management: Mastery in advanced state management techniques like Riverpod or MobX.
  • Performance Profiling: Expertise in profiling and optimizing app performance using tools like Flutter DevTools.
  • App Security: Knowledge of implementing security measures in Flutter applications.
  • Code Review and Mentoring: Ability to conduct thorough code reviews and mentor junior developers.
  • Cross-Platform Integration: Proficiency in integrating Flutter apps with native features and APIs.
  • Project Management: Experience in managing and overseeing the development of large-scale Flutter projects.
  • Continuous Integration/Deployment Automation: Skill in automating CI/CD processes for efficient app delivery.
  • Emerging Technologies: Awareness of the latest trends and technologies in the Flutter development ecosystem.
  • Technical Documentation: Expertise in creating detailed technical documentation for Flutter projects.
  • Performance Testing: Ability to conduct performance testing and analysis for Flutter applications.
  • Code Quality Assurance: Skill in ensuring code quality through strict adherence to coding standards.

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