Working full-time on a platform for individual investors, including iOS and macOS applications. The platform provides tools for investment management, data analysis, and portfolio tracking based on the global investment market.The project is developed using a modular Clean architecture combined with MVVM and Combine. Core stack: Swift, SwiftUI, Combine, CoreData, CloudKit, StoreKit, Async/Await, URLSession, REST API.Due to NDA restrictions, more detailed information about the project and company cannot be disclosed.

Developed the «Kyiv app / A tourist guide in your pocket!» (a mobile application created based on the book by Olena Kasian: «Kyiv not Kiev») from scratch to its release on the  App Store.Created a modern and intuitive interface using SwiftUI, ensuring a seamless user experience. Implemented in-app purchases for premium features, enhancing the app's monetization. Utilized the Combine framework for reactive programming, improving code performance and maintainability. Implemented network monitoring for seamless connectivity and data synchronization. Collaborated with a UI designer to create a visually appealing and user-friendly interface. Conducted beta testing and gathered user feedback for continuous improvement of app functionality and user experience. And many other features in the app...Currently working part-time at Kasian Development on supporting and updating the «Kyiv app / A tourist guide in your pocket!» project, and also developing another project that will soon be released on the  App Store.

Worked on a contract project developing an iOS application for surveillance systems. Contributed to video streaming features using the VLCKit library. Enhanced the user interface by adding new control elements and improving overall app performance.Implemented real-time push notifications and device configuration features through the mobile app. Ensured application stability and functionality by fixing bugs and optimizing existing features. Additionally, worked on optimizing video streaming performance for unstable network conditions.

Worked as a freelancer on Upwork, specializing in developing iOS applications using UIKit and SwiftUI. Integrated REST APIs and worked with CoreData, CloudKit, StoreKit, and other frameworks. Gained experience with Firebase services, including Analytics, Authentication, Firestore Database, and Storage.Successfully optimized performance, fixed bugs, and implemented new features, earning praise from clients for professionalism and meeting deadlines. Also contributed to improving user interfaces and adopting modern architectural patterns like MVVM and Combine to enhance code readability and scalability.

Worked under mentorship on various iOS applications in conditions close to real-world development. Gained experience in implementing features, fixing bugs, and optimizing performance while following best practices.