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Kostiantyn, Xamarin developer

Last Updated: 4 Jul 2023

- Xamarin developer with more than 7 years of experience in IT industry. - With Xamarin specifically I’ve been working for the last 6 years. - Deep knowledge and professional expertise in C#, Xamarin iOS and Xamarin Android (both Native and Forms). - Experience in participation in full life-cycle of software design and development process including requirements gathering and analyzing, technology selection and architecture design, application core development, testing and deployment. - Upper-Intermediate English. - Available ASAP

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Oleksandr P., Senior SharePoint/ MS Dynamics 365 / Power Apps Engineer

Last Updated: 4 Jul 2023

- IT experience starting in 2015. - Experience with the full lifecycle of designing, developing, installing, configuring, and maintaining applications on SharePoint 2007/2010/2013/2016/2019 Online. Nintex products (Workflows, Forms) - Strong knowledge of .NET, C#, ASP.NET, HTML (HTML5), JavaScript, CSS (CSS3). - Experience with Dynamics CRM, Power Apps, CDS, Power Automate, TypeScript, jQuery, Bootstrap (3, 4), Data Tables, SharePoint libs, ReactJS, React-Redux, Vue.js, Semantic UI. - Extensive experience with MS Visual Studio 2012/2013/2015/2017/2019, VS Code, TFS, Jira, Git. Android, Windows Phone, Xamarin, Outlook Add-ins, Outlook framework, React Native, Parse Platform, Firebase. - Upper-Intermediate English

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MS Dynamics 365

MS Dynamics 365

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Habib Ali, Java Spring Boot/ iOS Software Engineer

Karachi, Pakistan
Last Updated: 4 Jul 2023

Expert with iOS swift/ Objective C development Nearly 2 years experience on Java Spring Boot development

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Swift   5 yr.


Objective-C   5 yr.


Java   3 yr.

Spring Boot Framework

Spring Boot Framework   3 yr.


iOS   11 yr.

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Andrey B., QA Engineer

Last Updated: 12 Sep 2023

- QA Engineer with 5+ years of experience in software testing and quality assurance. - Proficient in creating test documentation, including Test Plan, Test Cases, Mind Maps, and Test Reports. - Skilled in manual and automated testing, with expertise in API testing and security testing for web services. - Experienced in requirement analysis, test design, and UI/UX testing. - Proficient in programming languages such as JavaScript, C#, and TypeScript. - Familiar with Agile and Scrum methodologies, as well as CI/CD practices. - Accomplishments include winning the Wix QA Hackathon in July 2017. - Intermediate English - Availability starting from ASAP

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Artem L., Product Manager

Last Updated: 15 Nov 2023

- Software engineer with over 10 years of experience in IT product and project management. - Strong background in computer science and information systems. - Proficient in multiple programming languages, including Java, JavaScript, Python, and C++. - Experienced in using project management methodologies such as Scrum, Kanban, and Waterfall. - Skilled in using project management tools like Jira, Confluence, and Trello. - Knowledgeable in source control systems like Git and Bitbucket. - Experienced in data analysis and visualization tools like Power BI and Excel.

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Project Management

Project Management   10 yr.


Agile   5 yr.


Scrum   5 yr.


Kanban   6 yr.

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Table of Contents

Soft skills of a Xamarin Developer

Soft skills of a Xamarin Developer: Soft skills are just as important as technical skills for a Xamarin Developer. They contribute to effective communication, collaboration, and problem-solving abilities. Here are the soft skills required for different levels of Xamarin Developers:


  • Attention to detail: Ability to pay close attention to code quality and catch potential bugs or issues.
  • Active listening: Listening carefully to understand requirements and feedback from team members and stakeholders.
  • Time management: Prioritizing tasks and meeting deadlines to ensure timely delivery of projects.
  • Teamwork: Collaborating effectively with other developers, designers, and testers to build Xamarin applications.
  • Adaptability: Being open to learning new technologies and adapting to changing project requirements.


  • Problem-solving: Analyzing complex problems and finding efficient solutions using Xamarin and related technologies.
  • Communication: Effectively conveying ideas, discussing technical concepts, and providing updates to team members and stakeholders.
  • Leadership: Taking ownership of tasks and guiding junior developers in implementing Xamarin best practices.
  • Critical thinking: Evaluating different approaches and making informed decisions to optimize Xamarin application performance.
  • Customer focus: Understanding client needs and delivering Xamarin solutions that align with their business goals.
  • Collaboration: Working closely with cross-functional teams to ensure seamless integration of Xamarin applications.
  • Quality assurance: Conducting thorough testing and debugging to deliver high-quality Xamarin applications.


  • Mentoring: Mentoring and coaching junior and middle-level Xamarin Developers to enhance their skills and knowledge.
  • Project management: Overseeing multiple Xamarin projects, managing resources, and ensuring successful project delivery.
  • Strategic thinking: Identifying opportunities for process improvement and implementing best practices for Xamarin development.
  • Client relationship management: Building and maintaining strong relationships with clients, understanding their business needs, and providing effective solutions.
  • Team coordination: Facilitating collaboration and communication within the Xamarin development team and other stakeholders.
  • Innovation: Staying updated with the latest trends and technologies in Xamarin development and exploring innovative approaches.
  • Conflict resolution: Resolving conflicts within the team and finding solutions that promote a positive work environment.
  • Empathy: Understanding the perspectives and challenges of team members and providing support and guidance.

Expert/Team Lead

  • Strategic planning: Developing long-term strategies and roadmaps for Xamarin development projects.
  • Architecture design: Designing scalable and maintainable Xamarin architectures that meet complex business requirements.
  • Technical expertise: Demonstrating deep knowledge and expertise in Xamarin and related technologies.
  • Decision-making: Making critical decisions regarding technology selection, project direction, and resource allocation.
  • Project estimation: Estimating project timelines, effort, and resources required for Xamarin development projects.
  • Risk management: Identifying and mitigating risks in Xamarin projects to ensure successful project delivery.
  • Presentation skills: Effectively presenting technical concepts and project updates to clients and stakeholders.
  • Continuous improvement: Driving continuous improvement initiatives within the Xamarin development team.
  • Business acumen: Understanding the business context and aligning Xamarin development with organizational goals.
  • Collaborative leadership: Inspiring and motivating the Xamarin development team to achieve project success.
  • Client advocacy: Representing the client’s interests and advocating for their needs within the development team.

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

Seniority NameYears of experienceResponsibilities and activitiesAverage salary (USD/year)
Junior0-2 yearsWorks under the guidance of more experienced developers. Assists in coding, testing, and debugging software applications. Participates in code reviews and documentation.45,000 – 65,000
Middle2-5 yearsDevelops software components independently. Collaborates with other developers to design and implement solutions. Takes ownership of assigned tasks and ensures timely delivery. Performs code reviews and contributes to system documentation.65,000 – 90,000
Senior5-8 yearsLeads the development of complex software solutions. Mentors junior and middle developers. Provides technical guidance and code reviews. Collaborates with cross-functional teams and stakeholders. Assists in system design and architecture decisions.90,000 – 120,000
Expert/Team Lead8+ yearsLeads a team of developers towards successful project delivery. Oversees the technical aspects of projects and ensures adherence to best practices. Provides guidance on system design, performance optimization, and scalability. Acts as a mentor and coach for junior, middle, and senior developers.120,000 – 150,000+

TOP 10 Tech facts and history of creation and versions about Xamarin Development

  • Xamarin was created in 2011 by the software development company Xamarin Inc., originally called Xamarin Studio.
  • It is a cross-platform development framework that allows developers to build native mobile apps using a single shared codebase.
  • Xamarin uses the C# programming language, which is widely used and has a large developer community.
  • In 2016, Microsoft acquired Xamarin and made it a part of its Visual Studio IDE, making Xamarin more accessible to developers.
  • One of the groundbreaking features of Xamarin is its ability to compile the shared code into native code, providing native performance and access to device-specific APIs.
  • Xamarin supports creating apps for iOS, Android, and Windows platforms, enabling developers to target a wide range of devices with a single codebase.
  • With Xamarin.Forms, developers can create a single UI that can be shared across multiple platforms, further reducing development time and effort.
  • Xamarin has a strong integration with Microsoft Azure, allowing developers to easily connect their apps to cloud services and utilize various Azure features.
  • Over the years, Xamarin has evolved and introduced new features and enhancements, such as Xamarin.Android Designer, Xamarin.iOS Designer, and Xamarin.Essentials.
  • Xamarin has a vibrant community of developers who actively contribute to the framework, providing support, libraries, and plugins to extend its capabilities.

What are top Xamarin instruments and tools?

  • Xamarin.Forms: Xamarin.Forms is a UI toolkit that allows developers to create a single user interface (UI) codebase that can be used across multiple platforms. It was first released in 2014 and has gained popularity for its ability to save development time and effort by enabling developers to write code once and deploy it on multiple platforms such as iOS, Android, and Windows. Xamarin.Forms provides a wide range of UI controls and layouts, making it easier to create cross-platform apps with consistent UI elements.
  • Xamarin.Android: Xamarin.Android is a tool that allows developers to build Android apps using the C# programming language. It is part of the Xamarin platform and provides a complete set of libraries and APIs for developing Android applications. Xamarin.Android enables developers to leverage their existing C# skills and codebase to build native Android apps, offering high performance and access to native Android APIs.
  • Xamarin.iOS: Xamarin.iOS is a tool that allows developers to build iOS apps using C#. It provides bindings to the native iOS APIs, enabling developers to create fully native iOS applications with the power of C#. Xamarin.iOS was first introduced in 2011 and has since become a popular choice for building iOS apps, especially for enterprises and organizations that want to leverage their existing C# knowledge and codebase.
  • Xamarin Test Cloud: Xamarin Test Cloud is a cloud-based service that enables developers to automate the testing of their Xamarin apps on a wide range of real devices. It allows developers to run tests in parallel across multiple devices, ensuring that their app works seamlessly across different screen sizes, operating system versions, and device configurations. Xamarin Test Cloud provides detailed test reports and analytics, helping developers identify and fix issues quickly.
  • Xamarin Profiler: Xamarin Profiler is a powerful tool that helps developers optimize the performance of their Xamarin apps. It allows developers to analyze the memory usage, CPU usage, and other performance metrics of their app in real-time. Xamarin Profiler provides insights and recommendations to improve the app’s performance and reduce memory leaks or CPU bottlenecks.
  • Xamarin Insights: Xamarin Insights is a comprehensive crash reporting and analytics service for Xamarin apps. It helps developers track and analyze app crashes, exceptions, and user behavior to identify and fix issues quickly. Xamarin Insights provides detailed crash reports, stack traces, and user session data, allowing developers to gain insights into how their app performs in the real world.
  • Xamarin Live Player: Xamarin Live Player is a tool that allows developers to test and debug their Xamarin apps directly on physical devices, without the need for complex setup or emulators. It enables developers to make code changes and see the results instantly on the device, reducing the development cycle time and improving productivity.
  • Xamarin.UITest: Xamarin.UITest is a UI testing framework for Xamarin apps. It allows developers to write automated UI tests using C# and run them on real devices or emulators. Xamarin.UITest provides a simple and intuitive API for interacting with the app’s UI elements, making it easier to write robust and reliable UI tests.
  • Xamarin.Forms Previewer: Xamarin.Forms Previewer is a visual tool that allows developers to see the real-time preview of their Xamarin.Forms UI code while editing it. It provides a split-screen view where developers can see the UI preview on one side and the corresponding XAML code on the other side. Xamarin.Forms Previewer helps developers iterate and refine their UI design quickly.

Hard skills of a Xamarin Developer

As a Xamarin Developer, having strong hard skills is crucial for success in the field. Here are the required hard skills for Junior, Middle, Senior, and Expert/Team Lead levels:


  • C# Programming: Proficiency in C# programming language for developing Xamarin applications.
  • Xamarin.Forms: Knowledge of Xamarin.Forms framework for building cross-platform user interfaces.
  • UI/UX Design: Understanding of basic UI/UX design principles to create visually appealing and user-friendly interfaces.
  • Debugging and Troubleshooting: Ability to identify and fix issues in Xamarin applications through debugging and troubleshooting techniques.
  • Version Control: Familiarity with version control systems like Git for managing source code and collaboration.


  • Advanced C# Concepts: In-depth knowledge of advanced C# concepts like LINQ, async/await, and delegates for efficient Xamarin development.
  • Xamarin.iOS and Xamarin.Android: Experience in developing native iOS and Android applications using Xamarin.iOS and Xamarin.Android.
  • RESTful APIs: Understanding of working with RESTful APIs to integrate backend services with Xamarin applications.
  • Database Integration: Proficiency in integrating databases like SQLite or Realm for data storage and retrieval in Xamarin applications.
  • Code Optimization: Skills to optimize code for performance and memory usage to ensure smooth and efficient Xamarin applications.
  • Unit Testing: Knowledge of unit testing frameworks like NUnit or xUnit to write automated tests for Xamarin applications.
  • Agile Development: Familiarity with Agile methodologies like Scrum for efficient project management and collaboration.


  • Advanced UI/UX Design: Expertise in creating complex and engaging user interfaces using Xamarin.Forms or custom renderers.
  • Performance Optimization: Ability to fine-tune performance of Xamarin applications through advanced optimization techniques.
  • Dependency Injection: Proficiency in using dependency injection frameworks like Prism or Autofac for modular and maintainable Xamarin code.
  • Continuous Integration: Experience with setting up and using continuous integration tools like Jenkins or Azure DevOps for automated builds and testing.
  • Security Implementation: Knowledge of implementing security measures like encryption, authentication, and authorization in Xamarin applications.
  • Memory Management: Understanding of memory management techniques in Xamarin to avoid memory leaks and optimize resource usage.
  • Code Review and Mentoring: Ability to conduct code reviews and provide guidance to junior developers for improving code quality.
  • Project Architecture: Experience in designing and implementing scalable and maintainable architectural patterns for Xamarin applications.

Expert/Team Lead

  • Advanced Cross-Platform Development: Proficiency in developing complex cross-platform applications using Xamarin and Xamarin.Forms.
  • Performance Profiling: Expertise in analyzing and optimizing application performance using profiling tools like Xamarin Profiler or Instruments.
  • Code Refactoring: Ability to refactor existing codebase to improve code quality, maintainability, and scalability.
  • Team Leadership: Strong leadership skills to guide and mentor a team of Xamarin developers, ensuring successful project delivery.
  • Client Communication: Excellent communication and interpersonal skills to effectively communicate with clients and stakeholders.
  • Estimation and Planning: Experience in project estimation and planning, including resource allocation and task prioritization.
  • Code Documentation: Proficiency in documenting code and maintaining technical documentation for future reference.
  • Continuous Learning: Dedication to staying updated with the latest Xamarin and mobile development trends and technologies.
  • Problem Solving: Strong analytical and problem-solving abilities to tackle complex issues and find effective solutions.
  • Code Review and Quality Assurance: Expertise in conducting thorough code reviews and implementing quality assurance processes.
  • Project Management: Knowledge of project management methodologies and tools for successful project execution and delivery.

TOP 10 Xamarin Related Technologies

  • Languages – C#

    C# is the primary language used for Xamarin app development. It is a powerful, statically-typed, object-oriented language that offers a wide range of features and libraries. With C#, developers can write code once and use it across multiple platforms, making it highly efficient for Xamarin development.

  • Frameworks – Xamarin.Forms

    Xamarin.Forms is a UI framework that allows developers to create cross-platform user interfaces using a single codebase. It provides a wide range of pre-built UI controls and layouts, making it easier to create visually appealing and responsive mobile apps. Xamarin.Forms also offers native performance and access to native APIs.

  • IDE – Visual Studio

    Visual Studio is the go-to integrated development environment (IDE) for Xamarin app development. It provides a comprehensive set of tools and features for building, debugging, and deploying Xamarin apps. Visual Studio offers a highly productive development experience with its rich code editor, debugging capabilities, and seamless integration with Xamarin.

  • Testing – Xamarin Test Cloud

    Xamarin Test Cloud is a cloud-based testing platform specifically designed for Xamarin apps. It allows developers to automate the testing of their apps on a wide range of real devices, ensuring the app’s compatibility and performance across different platforms. Xamarin Test Cloud offers extensive test coverage and detailed reporting.

  • Backend – Azure Mobile Apps

    Azure Mobile Apps is a backend-as-a-service (BaaS) platform that provides a scalable and secure backend infrastructure for Xamarin apps. It offers features such as data storage, push notifications, authentication, and offline sync. Azure Mobile Apps seamlessly integrates with Xamarin and enables developers to focus on the frontend development.

  • Version Control – Git

    Git is a widely used version control system for Xamarin app development. It allows developers to track changes, collaborate with team members, and manage code repositories efficiently. Git provides features like branching, merging, and pull requests, making it easier to manage the development process and ensure code quality.

  • Analytics – Xamarin Insights

    Xamarin Insights is a powerful analytics platform that helps developers gain insights into app usage, crashes, and other performance metrics. It provides real-time monitoring and reporting, allowing developers to identify and fix issues quickly. Xamarin Insights also offers integration with popular analytics services like Google Analytics.

How and where is Xamarin used?

Case NameCase Description
1. MicrosoftMicrosoft leveraged Xamarin to develop their mobile apps like Outlook, Word, and PowerPoint. By using Xamarin, Microsoft was able to share code across multiple platforms, resulting in faster development and reduced costs. Xamarin’s cross-platform capabilities allowed Microsoft to reach a wider audience and provide consistent user experiences across different devices.
2. Alaska AirlinesAlaska Airlines used Xamarin to build their mobile application, which offers features like flight booking, check-in, and real-time flight updates. Xamarin’s ability to share code between iOS and Android platforms enabled Alaska Airlines to save development time and resources. The app has received positive reviews for its seamless user experience and reliability.
3. The World BankThe World Bank adopted Xamarin to create their flagship mobile app called “World Bank DataFinder.” This app provides access to a vast amount of data, including economic indicators, development projects, and global financial statistics. By utilizing Xamarin, the World Bank was able to develop a single codebase that could be deployed on iOS, Android, and Windows platforms, ensuring broad accessibility to their data.
4. StoryoStoryo, a Portugal-based startup, used Xamarin to develop their app that automatically creates video stories from users’ photos and videos. Xamarin’s cross-platform capabilities allowed Storyo to release their app simultaneously on iOS and Android, reaching a larger user base. The app gained popularity for its innovative concept and ease of use, and Xamarin played a crucial role in its development.
5. OloOlo, a leading online food ordering platform, utilized Xamarin to build their mobile app, which enables users to order food from various restaurants. Xamarin’s code-sharing capabilities allowed Olo to develop the app for both iOS and Android platforms simultaneously, reducing development time and effort. The app has been praised for its smooth ordering process and reliable performance.

Pros & cons of Xamarin

6 Pros of Xamarin

  • Xamarin allows developers to build cross-platform mobile applications using a single codebase, which significantly reduces development time and effort.
  • It offers a native-like user experience as Xamarin uses native UI controls and APIs, ensuring that the apps look and feel like native apps on each platform.
  • Xamarin provides access to a vast ecosystem of libraries, tools, and plugins, allowing developers to leverage existing resources and accelerate development.
  • With Xamarin, developers can share code not only for the business logic but also for the user interface, resulting in code reuse and easier maintenance.
  • It enables developers to access platform-specific features and capabilities through platform bindings, ensuring that the apps can take full advantage of the underlying platform.
  • Xamarin allows seamless integration with existing .NET libraries, making it easier for .NET developers to transition into mobile app development.

6 Cons of Xamarin

  • Xamarin apps tend to have a larger app size compared to fully native apps due to the inclusion of the Xamarin runtime.
  • There might be a slight performance overhead when using Xamarin as it needs to bridge the communication between the shared code and the platform-specific code.
  • Developers using Xamarin may face limitations or delays when new platform updates are released since Xamarin relies on updates from the underlying platforms.
  • Xamarin.Forms, a UI framework provided by Xamarin, may not offer the same level of flexibility and customization as platform-specific UI frameworks.
  • Debugging and troubleshooting can be more challenging in Xamarin as issues can arise from both the shared code and the platform-specific code.
  • Compared to fully native development, Xamarin may have a steeper learning curve for developers who are not familiar with C# or the .NET ecosystem.

Cases when Xamarin does not work

  1. The use of platform-specific APIs: Xamarin allows developers to access platform-specific APIs using bindings. However, in some cases, certain platform-specific APIs may not be available or accessible through Xamarin. This can limit the functionality and capabilities of the application, particularly if the app heavily relies on these APIs.
  2. Limited third-party library support: While Xamarin provides a vast library of its own components and plugins, it may not have support for all third-party libraries available in the native platforms. This can be a significant limitation if your application relies heavily on specific third-party libraries that are not supported by Xamarin.
  3. Performance issues: Xamarin applications are known to have slightly slower startup times compared to native applications. This is because Xamarin applications require an additional layer of interpretation and runtime overhead. Although Xamarin has made significant improvements in performance over the years, there may still be cases where the performance is not on par with native applications, especially for complex and graphics-intensive applications.
  4. UI limitations: Xamarin provides a cross-platform UI toolkit called Xamarin.Forms, which allows developers to create a single codebase for UI across multiple platforms. However, Xamarin.Forms may not have all the UI components and customization options available in the native platforms. This can be a limitation if your application requires specific UI elements or advanced customization.
  5. Debugging challenges: Debugging Xamarin applications can sometimes be more challenging compared to native applications. This is because Xamarin applications run on a shared runtime environment, and issues specific to a particular platform may be harder to diagnose and fix. Additionally, debugging tools and features may not be as extensive or mature as those available for native development.

TOP 10 Facts about Xamarin

  • Xamarin is a popular cross-platform development framework that allows developers to build native mobile applications for iOS, Android, and Windows using a single codebase.
  • It was founded in May 2011 by engineers Miguel de Icaza and Nat Friedman and was acquired by Microsoft in 2016.
  • Xamarin provides a C#-based development environment, allowing developers to leverage their existing skills and codebase when building mobile apps.
  • With Xamarin, developers can share up to 90% of their code across multiple platforms, reducing development time and effort.
  • It offers a comprehensive set of tools and libraries for building mobile apps, including a powerful IDE (Integrated Development Environment) called Visual Studio.
  • Xamarin allows developers to access native APIs and platform-specific features, providing a high level of performance and native-like user experience.
  • It has a large and active community of developers who contribute to its growth and provide support through forums, documentation, and open-source projects.
  • Xamarin.Forms, a part of Xamarin, enables developers to create user interfaces once and deploy them across multiple platforms, further speeding up the development process.
  • Microsoft offers free access to Xamarin for Visual Studio subscribers, making it an attractive choice for developers already using the Microsoft ecosystem.
  • Xamarin has been widely adopted by companies of all sizes, including major brands like Slack, Siemens, and Bosch, showcasing its reliability and scalability for enterprise-level applications.

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