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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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Maksym B., Android Developer

Last Updated: 19 Oct 2023

- Over 7 years of commercial experience in IT as an Android Developer; - Proficient in Java and Kotlin programming languages; - Strong knowledge of Object-Oriented Programming (OOP) principles; - Experienced in using Design patterns such as MVP and MVVM; - Skilled in using Android SDK and various libraries/frameworks including RxJava, Jetpack Compose, Dagger, Hilt, Room, Navigation, Google Maps, Firebase Analytics, Firebase Crashlytics, and Firebase Cloud Messaging; - Familiar with Clean Architecture and Retrofit for building robust and scalable applications; - Proficient in using source control systems like GIT and tracking systems like Jira and Trello; - Experienced in Agile development methodologies such as SCRUM and Kanban; - Upper-Intermediate level of spoken and written English; - Successfully delivered projects in various domains including in-store and online shopping, retail and distribution, taxi services, sports, and job search; - Strong attention to detail, logical thinking, and result-oriented mindset.

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Android   7 yr.

Android SDK

Android SDK   7 yr.

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Mykhail, Flutter Developer

Kyiv, Ukraine
Last Updated: 17 Jan 2024

-Over 5 years of commercial experience in software development - Experienced have deep knowledge and versatile skills in building cross-platform apps for iOS and Android. -Proficient in Dart, Kotlin, and Java, Flutter SDK - Technical toolkit: OOP, Data structures and algorithms, Asynchrony and Isolates, Flutter SDK, MVC, MVP, MVI, Clean Architecture, Provider, Freezed, BLoC, Design patterns, Material Design, Firebase services (Auth, Firestore Realtime Database), Multithreading Principles, REST API, Coroutines, RX, Flame, Flame Audio, Google Analytics/Crashlytics, Flutter Web, Freezed, Swagger Generator. - Extensive experience in software quality assurance - Experience includes a variety of projects in different industries such as Social Media, Education and Recruitment Management Systems, and many others.

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Dart   5 yr.





Flutter SDK

Flutter SDK   5 yr.



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Oleksandr T., Senior Android Engineer

Last Updated: 4 Jul 2023

- Senior Android Engineer with 6+ years of commercial experience and strong organizational skills. - Proficient in Android development using Java, Kotlin, and libraries like Retrofit and Room. - Expert in methodologies like MVC, MVVM, Clean Architecture, and SOLID principles. - Comfortable working with REST API, version control tools like Git, and project management through MVP. - Upper-Intermediate English - Available ASAP

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Android   6 yr.

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Yevhenii D, Back End Developer

Uzhgorod, Ukraine
Last Updated: 29 Nov 2023

Highly experienced backend developer with over five years of experience specializing in commercial application development with Node.js, Ruby on Rails, and front-end technologies including React.js. Holds a Master's Degree in Software Engineering from Uzhgorod National University. Proficient with a suite of databases and services such as PostgreSQL, MySQL, MongoDB, ElasticSearch, RabbitMQ and Redis, with a strong command of API integration (Stripe, PayPal, Twilio). Skilled in DevOps practices and cloud platforms like AWS, Google Cloud, and Heroku. Well-versed in multiple programming languages and frameworks, demonstrating significant technical expertise in JavaScript/TypeScript, Node.js, Nest.js, and Ruby. Successfully applied a deep understanding of software engineering principles, SDLC, and development patterns to a variety of complex projects across different domains.

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Ruby on Rails (RoR)

Ruby on Rails (RoR)

Ant Design

Ant Design





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Table of Contents

How and where is Crashlytics used?

Case NameCase Description
1. Real-time Crash ReportingCrashlytics Development provides real-time crash reporting, allowing developers to quickly identify and diagnose crashes in their applications. With Crashlytics, developers can receive detailed crash reports including crash logs, stack traces, and device information. This enables them to understand the root cause of crashes and prioritize bug fixes based on the impact and frequency of crashes. By promptly addressing crashes, developers can improve the stability and reliability of their applications, resulting in a better user experience.
2. Performance MonitoringCrashlytics Development offers performance monitoring capabilities that help developers track and analyze the performance of their applications. It provides insights into factors such as app startup time, network latency, and UI responsiveness. By monitoring these metrics, developers can identify performance bottlenecks and optimize their code to enhance app performance. This can lead to faster loading times, smoother user interactions, and improved overall app responsiveness.
3. Beta Testing and Feedback CollectionCrashlytics Development facilitates beta testing by allowing developers to distribute pre-release versions of their applications to a selected group of testers. Developers can collect valuable feedback from testers, including bug reports, feature requests, and general comments. This feedback loop helps developers identify issues and make necessary improvements before releasing the app to the wider audience. By leveraging Crashlytics’ beta testing and feedback collection features, developers can ensure a more polished and bug-free app launch.
4. Analytics IntegrationCrashlytics Development seamlessly integrates with various analytics platforms, providing developers with a holistic view of their app’s performance and user behavior. By combining crash reports with user analytics, developers can gain valuable insights into how crashes impact user engagement, retention, and conversion rates. This data-driven approach allows developers to prioritize bug fixes based on the impact they have on user experience and business metrics. Additionally, the integration with analytics platforms enables developers to track custom events and user flows, further enhancing their understanding of app usage patterns.
5. Continuous Integration and DeliveryCrashlytics Development supports seamless integration with popular continuous integration and delivery (CI/CD) tools. This enables developers to automate the deployment and testing of their applications across different environments. By integrating Crashlytics into their CI/CD workflows, developers can ensure that crash reporting and performance monitoring are seamlessly integrated into their release processes. This helps catch issues early on and ensures that only stable and reliable versions of the application are released to end-users.

Pros & cons of Crashlytics

8 Pros of Crashlytics

  • Real-time crash reporting: Crashlytics provides real-time crash reporting, allowing developers to quickly identify and fix crashes in their applications. This helps improve the overall stability and performance of the app.
  • Comprehensive crash reports: Crashlytics provides detailed crash reports that include stack traces, device information, and user insights. This makes it easier for developers to diagnose and troubleshoot issues.
  • Support for multiple platforms: Crashlytics supports a wide range of platforms including iOS, Android, tvOS, and macOS, making it a versatile solution for developers working on different platforms.
  • Integration with other tools: Crashlytics seamlessly integrates with other developer tools such as Firebase Analytics, allowing developers to gain deeper insights into user behavior and app performance.
  • Over-the-air updates: Crashlytics enables developers to push over-the-air updates to their apps, allowing them to quickly roll out bug fixes and improvements without requiring users to download a new version of the app.
  • Advanced analytics: Crashlytics provides advanced analytics features such as custom events, funnels, and user segmentation, enabling developers to gain valuable insights into user engagement and retention.
  • Easy setup and integration: Crashlytics offers a simple and straightforward setup process, with easy integration into existing projects. This minimizes the development time and effort required to implement crash reporting.
  • Active community support: Crashlytics has a large and active community of developers who regularly contribute to its development and provide support through forums and documentation.

8 Cons of Crashlytics

  • Potential privacy concerns: Crashlytics collects user data as part of its crash reporting process. While the data is anonymized, there may be privacy concerns for some users.
  • Limited customization options: Crashlytics may not offer extensive customization options for developers who require highly tailored crash reporting solutions.
  • Dependency on third-party services: Crashlytics relies on third-party services like Firebase for certain features. This dependency may introduce additional complexities and potential issues.
  • Learning curve for beginners: While Crashlytics offers a user-friendly interface, there may be a learning curve for developers who are new to crash reporting tools.
  • Limited free tier: Crashlytics offers a free tier with limited features and usage limits. Developers with larger projects or specific needs may need to upgrade to a paid plan.
  • Platform-specific limitations: Some features and functionalities of Crashlytics may be platform-specific, limiting their availability and usefulness across different platforms.
  • Potential performance impact: Crashlytics collects crash data in the background, which may have a minor impact on the app’s performance and resource usage.
  • Reliance on internet connectivity: Crashlytics requires an internet connection to send crash reports, which may pose challenges in scenarios where internet connectivity is limited or unreliable.

TOP 10 Crashlytics Related Technologies

  • Java

    Java is one of the most popular programming languages for Crashlytics Software Development. It is a versatile and widely-used language known for its stability and scalability. Java offers a rich set of libraries and frameworks that make it easy to develop robust and secure applications.

  • Swift

    Swift is a powerful and intuitive programming language used for developing Crashlytics Software. It is the primary language for iOS and macOS app development and offers a modern and concise syntax. Swift is known for its safety features, performance, and compatibility with existing Objective-C code.

  • JavaScript

    JavaScript is a widely-used programming language for both frontend and backend development. It is especially popular in web development and offers a wide range of frameworks and libraries such as React, Angular, and Node.js. JavaScript enables developers to create interactive and dynamic Crashlytics Software applications.

  • Python

    Python is a versatile and beginner-friendly programming language used in various domains, including Crashlytics Software Development. It emphasizes code readability and simplicity, making it a popular choice for both beginners and experienced developers. Python offers a vast ecosystem of libraries and frameworks such as Django and Flask.

  • React Native

    React Native is a popular framework for developing cross-platform Crashlytics Software applications. It allows developers to write code once and deploy it on multiple platforms, including iOS and Android. React Native offers a native-like experience and leverages the power of JavaScript to build high-performance applications.

  • Node.js

    Node.js is a runtime environment that allows developers to run JavaScript on the server-side. It is used for building scalable and high-performance backend systems for Crashlytics Software applications. Node.js offers a non-blocking I/O model, which makes it efficient for handling concurrent requests.

  • Angular

    Angular is a popular frontend framework for building robust and scalable Crashlytics Software applications. It provides tools and features for creating dynamic user interfaces and managing complex data flows. Angular follows the MVC (Model-View-Controller) architecture, making it suitable for large-scale projects.

What are top Crashlytics instruments and tools?

  • Crashlytics: Crashlytics is a powerful crash reporting and analysis tool that helps developers track and fix app crashes quickly. Acquired by Twitter in 2013 and subsequently integrated with Fabric, Crashlytics has become one of the most widely used crash reporting tools in the mobile app development community. It provides detailed crash reports, real-time alerts, and advanced analytics to help developers understand the root cause of crashes and prioritize bug fixes.
  • Fabric: Fabric is a comprehensive mobile app development platform that offers a suite of tools and services for building, testing, and distributing apps. It was launched by Twitter in 2014 and has gained popularity among developers due to its ease of use and robust features. Fabric includes Crashlytics as one of its key components along with other tools like Beta for app distribution, Answers for app analytics, and Digits for authentication. Fabric was acquired by Google in 2017 and later integrated with Firebase.
  • Firebase: Firebase is a mobile and web application development platform provided by Google. It offers a wide range of services, including app analytics, real-time database, cloud messaging, and crash reporting. Firebase Crashlytics, which replaced Fabric’s Crashlytics, is a part of the Firebase suite. It provides developers with detailed crash reports, real-time alerts, and powerful analytics to help them identify and resolve issues affecting their apps. Firebase Crashlytics has gained popularity for its seamless integration with other Firebase services and its ability to provide actionable insights for app performance optimization.
  • Sentry: Sentry is an open-source error monitoring and crash reporting tool that supports multiple programming languages, including mobile app development platforms like iOS and Android. It offers features such as real-time error monitoring, release tracking, and issue prioritization. Sentry provides detailed crash reports with stack traces, contextual information, and user feedback to help developers diagnose and resolve issues quickly. It also integrates with popular project management and collaboration tools, making it easier for development teams to track and fix bugs.
  • Microsoft App Center: Microsoft App Center is a mobile app development platform that provides a comprehensive set of tools and services for building, testing, distributing, and monitoring apps. It includes a crash reporting tool called Crashes, which helps developers identify and analyze app crashes across different platforms. Crashes provides crash reports with stack traces, device information, and user feedback to assist developers in diagnosing and fixing issues. Microsoft App Center also offers other features like build automation, distribution management, and app analytics, making it a complete solution for mobile app development.
  • Bugsnag: Bugsnag is an error monitoring and crash reporting tool that helps developers track and prioritize software bugs. It supports multiple programming languages and platforms, including mobile app development for iOS and Android. Bugsnag provides real-time error monitoring, crash reports with stack traces, and advanced error analytics to help developers understand the impact of bugs on their applications. It also integrates with popular collaboration and project management tools, making it easier for development teams to track and resolve issues efficiently.
  • Instabug: Instabug is a comprehensive bug reporting and feedback solution for mobile app developers. It offers a range of tools, including crash reporting, in-app chat, and user surveys. Instabug’s crash reporting feature provides detailed crash reports with stack traces, device information, and user steps leading to the crash. It also allows developers to communicate directly with users through in-app chat for better issue understanding and resolution. Instabug is known for its user-friendly interface and seamless integration with popular mobile app development frameworks.
  • Raygun: Raygun is an application performance monitoring and crash reporting tool that helps developers identify and resolve software issues. It supports various programming languages and platforms, including mobile app development for iOS and Android. Raygun provides real-time error monitoring, crash reports with detailed diagnostics, and performance insights to help developers improve the user experience of their applications. It also offers features like user tracking, session replay, and integration with popular development tools, making it a comprehensive solution for app monitoring and bug fixing.
  • New Relic: New Relic is a cloud-based application performance monitoring platform that offers a range of tools and services for monitoring and optimizing software performance. It provides real-time insights into application behavior, including crash reporting and error analytics. New Relic’s crash reporting feature helps developers identify and diagnose crashes quickly by providing detailed crash reports with stack traces, user information, and environmental data. New Relic also offers features like performance monitoring, infrastructure monitoring, and application tracing, making it a comprehensive solution for monitoring and optimizing app performance.

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

  • Crashlytics is a mobile app crash reporting tool, first released in 2011.
  • It was developed by a startup called Crashlytics, founded by Jeff Seibert and Wayne Chang.
  • Crashlytics uses a unique methodology called “real-time crash reporting,” which allows developers to receive instant crash reports directly from their users’ devices.
  • In 2013, Crashlytics was acquired by Twitter, making it a part of one of the largest social media platforms at the time.
  • Crashlytics became immensely popular due to its ability to provide detailed crash reports, including stack traces and user metadata, helping developers quickly identify and fix bugs.
  • In 2017, Crashlytics was integrated into Firebase, a comprehensive mobile and web app development platform provided by Google.
  • With the integration into Firebase, Crashlytics gained access to additional features and tools, such as analytics and cloud messaging.
  • Crashlytics supports multiple platforms, including iOS, Android, tvOS, and macOS.
  • One of Crashlytics’ groundbreaking features is “Crashlytics Beta,” a tool that enables developers to distribute beta versions of their apps to a specific group of testers.
  • Crashlytics continuously evolves to provide better crash reporting and debugging capabilities, with regular updates and new features being released.
  • The latest major version of Crashlytics, as of 2021, is 17.4.1, which includes improvements in stability, performance, and integration with other Firebase services.
  • Crashlytics has become an essential tool for app developers, helping them ensure the stability and reliability of their mobile applications.

Cases when Crashlytics does not work

  1. Crashlytics does not work if the application does not have internet connectivity. Since Crashlytics relies on sending crash reports and analytics data to its servers, it requires a stable internet connection. Without internet connectivity, Crashlytics cannot transmit the crash reports and analytics data, resulting in a failure to work properly.
  2. If the Crashlytics SDK is not properly integrated into the application, it may not work as expected. The SDK needs to be correctly integrated into the codebase following the provided documentation and guidelines. Any mistakes or omissions during the integration process can lead to Crashlytics not capturing crashes or providing accurate analytics data.
  3. In some cases, if the application crashes before Crashlytics initialization, it may fail to capture the crash. Crashlytics needs to be initialized early in the application lifecycle to ensure that it can capture crashes effectively. If a crash occurs before the initialization process is complete, Crashlytics may not be able to record the crash.
  4. If the application has a custom error handling mechanism that intercepts crashes before Crashlytics can handle them, Crashlytics may not capture those crashes. Custom error handling mechanisms can interfere with Crashlytics’ crash reporting functionality, preventing it from working correctly.
  5. Crashlytics depends on the device’s system logs to gather additional information about crashes. In certain scenarios, if the system logs are not available or accessible, Crashlytics may not be able to provide detailed crash reports. This can happen on some devices or if there are restrictions on accessing system logs.

Hard skills of a Crashlytics Developer

Hard skills of a Crashlytics Developer:


  • Experience with mobile application development
  • Proficiency in programming languages such as Java or Kotlin
  • Knowledge of Crashlytics and its integration into mobile apps
  • Understanding of crash reporting and analysis
  • Ability to debug and troubleshoot application crashes


  • Advanced knowledge of mobile application development frameworks
  • Expertise in programming languages such as Java or Kotlin
  • In-depth understanding of Crashlytics and its features
  • Experience with crash reporting and analysis tools
  • Ability to optimize crash reporting and minimize false positives
  • Knowledge of continuous integration and deployment processes
  • Ability to mentor junior developers and assist with problem-solving


  • Extensive experience in mobile application development
  • Mastery of programming languages such as Java or Kotlin
  • Expert-level knowledge of Crashlytics and its advanced features
  • Proficiency in crash reporting and analysis techniques
  • Ability to develop custom crash reporting solutions
  • Experience with performance monitoring and optimization
  • Strong understanding of mobile app architecture and design patterns
  • Ability to lead and guide teams in implementing Crashlytics

Expert/Team Lead

  • Proven track record of successful mobile app development projects
  • Deep expertise in multiple programming languages and frameworks
  • In-depth knowledge of Crashlytics and its integration with other tools
  • Ability to analyze complex crash reports and provide actionable insights
  • Experience in building scalable and reliable crash reporting systems
  • Expertise in performance optimization and memory management
  • Strong leadership and team management skills
  • Ability to drive innovation and set technical direction for the team
  • Excellent communication and collaboration skills
  • Experience in conducting code reviews and ensuring code quality
  • Ability to architect and design robust and scalable mobile applications

Soft skills of a Crashlytics Developer

Soft skills are just as important as technical skills for a Crashlytics Developer. Here are the key soft skills required at different levels of experience:


  • Strong problem-solving skills: Ability to analyze crash reports, identify patterns, and troubleshoot issues efficiently.
  • Attention to detail: Being meticulous in examining crash logs and ensuring accurate bug reporting.
  • Effective communication: Articulating technical concepts to non-technical stakeholders and collaborating with cross-functional teams.
  • Adaptability: Being able to quickly learn new technologies and adapt to changing project requirements.
  • Time management: Prioritizing tasks, meeting deadlines, and managing multiple projects simultaneously.


  • Leadership: Guiding and mentoring junior developers, fostering a collaborative work environment, and taking ownership of project deliverables.
  • Teamwork: Collaborating effectively with other developers, testers, and project managers to achieve common goals.
  • Problem-solving mindset: Applying analytical thinking and creative problem-solving techniques to address complex crash scenarios.
  • Customer focus: Understanding the impact of crashes on end-users and striving to deliver a seamless user experience.
  • Proactive approach: Identifying potential issues and implementing preventive measures to avoid crashes in the first place.
  • Attention to quality: Ensuring code quality, adhering to coding standards, and conducting thorough code reviews.
  • Continuous learning: Keeping up with the latest trends and advancements in mobile app development and crash reporting.


  • Strategic thinking: Aligning crash reporting strategies with business goals and driving continuous improvement in crash monitoring and analysis processes.
  • Technical mentorship: Sharing knowledge and best practices with junior and middle-level developers to enhance the overall team’s skills.
  • Project management: Overseeing the end-to-end crash reporting process, including planning, execution, and monitoring.
  • Collaboration with stakeholders: Interacting with product managers, designers, and other stakeholders to understand their requirements and incorporate crash reporting into the product roadmap.
  • Conflict resolution: Resolving conflicts within the team and facilitating effective communication between team members.
  • Innovation: Identifying and implementing advanced crash reporting techniques and tools to improve the overall crash analysis process.
  • Decision-making: Making informed decisions based on crash data analysis to prioritize bug fixes and enhancements.
  • Presentation skills: Presenting crash reports and analysis findings to both technical and non-technical audiences in a clear and concise manner.

Expert/Team Lead

  • Strategic leadership: Setting the overall crash reporting strategy for the team and aligning it with the organization’s goals.
  • Team management: Managing a team of Crashlytics Developers, providing guidance, mentoring, and fostering a culture of continuous learning.
  • Cross-functional collaboration: Collaborating with other teams, such as QA, UX, and backend development, to ensure seamless integration of crash reporting into the overall development process.
  • Technical expertise: Demonstrating deep knowledge of Crashlytics and other crash reporting tools, and staying updated with the latest advancements in the field.
  • Data-driven decision-making: Leveraging crash data and analytics to drive data-informed decisions and prioritize development efforts.
  • Strategic partnerships: Building relationships with crash reporting tool vendors and staying informed about new features and updates.
  • Influence and advocacy: Promoting the importance of crash reporting within the organization and advocating for its integration into the development lifecycle.
  • Continuous improvement: Identifying areas for improvement in crash reporting processes and implementing innovative solutions.
  • Risk management: Assessing the impact of crashes on the organization’s reputation and proactively mitigating potential risks.
  • Thought leadership: Contributing to industry forums, publishing articles, and giving talks on crash reporting best practices and trends.
  • Business acumen: Understanding the business implications of crashes and effectively communicating the ROI of crash reporting initiatives.

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