- Introduced and implemented the MVVM architecture- Improved crash free rate of application up to 99.7%

• Collaborated on transition from apple MVC to MVVM architecture• Reduced the implementation time needed for every feature module by creating a Xcode template for adding a whole new MVVM module.• Established a procedure for implementing and testing features which helped us increase the bug-free rate from 98.6% to 99.8% with more than 2M monthly users.• Increased test coverage which decreased manual test time spent and increased the reliability of the application.• Dropped half of bottlenecks by a light refactoring on the objective-C payment SDK.• Constructed a Fastlane routine, which resulted in almost zero release mistakes and saved up to 3% of developers' time.

• Hired and mentored a fresh junior developer and helped him to develop and think as an expert level programmer.• Founded a solid scalable iOS application with VIPER (Combine + SwiftUI) architecture which led to faster feature delivery by making a routine for implementation of features• Made a test oriented and SOLID principles committed team which led to 99.8% crash free releases and faster bug detection process.• Collaborated with PO and presented 'Story Point' system of agile task planning into the team which brought more accurate estimations.

• Presented and Implemented VIPER clean architecture which resulted in reduction time spent for feature modules and brought more testability and maintenance• Initiated the TDD (unit and UI tests) approach that resulted in more quality codes• Removed the pain of adopting the newly user data analytical systems required by marketing department into the code base by constructing an Analytical wrapper layer interface.• Collaborated in the team brainstorms to improve app UI/UX and marketing campaigns which led to more iOS UI/UX friendly application and gain more user interaction

• Created three iOS applications with MVC and MVVM architectures• Collaborating with UI/UX design team in order to have a more iOS friendly UI/UX• Gained hands on experience with RxSwift, RabbitMQ, MQTT, No-Storyboard programming, Core Location, MapKit, GoogleMap and AVFoundation technologies.

This company designed and produced IoT devices.