- Built and maintaining my own attendance QR-code checker app from scratch- The app's feature is to let business owners to check their visitors attendance- Set up attendees search logic using their first and last names- Made reactive screen info renewal after editing attenders’ data- Managed to save Transformable: [String] and Binary (QR-Code image) types to CoreData- Used GCD to optimise camera usage- Localised privacy messages inside Info.plist

- Worked on iOS application that helps managers to interact with workers and products- Built QR-code scanner and generator to let the manager check whether the products are in stock or not, thereby allowing the managers to minimise phone calls and spend less time with organising their work- Fixed freezing issues with device capture session sending the process to background- Worked on the app’s localisation in Russian, English, German and Spanish- Found and removed memory leaks problems, interface bugs and code errors