Ozan – iOS, Swift, RxSwift

It is a platform that establishes a solid communication channel between doctors and patients. The app has a wide variety of features for tracking the patients' involvement in prescriptions given by the physician. Also, the app was being used in clinical trials.

• Fixed bugs;
• Implementated of new screens using MVVM architecture and RxSwift;
• Added new features to the existing screens;
• Made sure that critical bugs on the new big feature have been fixed which was about to be presented to the potential client.

COFE is a marketplace for ordering coffee from worldwide-known coffee chains and local artisanal coffee shops. The main competitors were Deliveroo, Uber, Careem, Talabat, etc.

Ozan was the only full-time iOS developer for most of his employment there and was responsible for everything in the app. Here are some responsibilities he was in charge of:

• Communicating with back-end developers, designers, and product managers to implement solutions;
• Bug fixing;
• Converting the app's screens into Tab bar structure while changing the app's architecture into MVPGreatly optimizing the GraphQL requests to drop the average response time-per-user by 100 times;
• Removal of unused code which was the 12% of the entire codebase;
• Regular usage of Protocol Oriented Programming many times to speed up the development of new features.

Math Hero app is a Photo Problem Solver. It helps students to see the step-by-step solution of the mathematical equations which they scanned using their phone's camera.

The main features Ozan accomplished:

• Created video by recording the iPhone screen and front facing camera simultaneously then sliced it into equal-length parts using AVFoundation and ReplayKit;
• Implemented a math keyboard that sends LaTeX characters into Math canvas as an input;
• Conducted code reviews;
• Carried out communication with product designers and managers to find solutions for the problems;
• Successfully implemented the main screen of the app where multiple user-triggered actions were happening at the same time.

Link & Drive is an app for electric cars manufactured by Fiat. The app has a wide variety of features such as Find My Car, Music Player, Trip Recording, Navigation, Displaying car's driving information, and many others. It supports both landscape and portrait orientations, thanks to the Size Classes.

Ozan worked on this app from the very start till the end. Highlights of some features he has successfully worked on:

• Bluetooth connection with a car;
• Custom music player to control the music playing;
• Data persistence through encrypted Realm database;
• Implemented every screen for both device orientations;
• Wrote unit tests to make sure that the Bluetooth device is working according to the manufacturer's documentation.