1. **Robat: AI friend, chat master - Need expert advice or help but don't know where to turn? Meet RobatAI, an artificial intelligence chatbot assistant.** I create and optimize application for iOS, macOS and visionOS using Swift, UIKit and SwiftUI. I specialize in developing AI chat assistant and mastering voice input and output methods. My solutions are not only functional, but also highly productive thanks to deep code optimization. Key achievements:

• Improved chat performance by 100% by implementing AsyncDisplayKit (Texture).
• Working with the network layer based on Rust library using QUIC + HTTP/3, which increased the speed and reliability of data transfer.
• Integrated the C library Opus for working with audio, which accelerated playback and recording by 50% and provided support for the .ogg format.
• Migrated databases from Realm to SwiftData and CoreData, improving application stability and performance.
• Worked with gRPC and Connect libraries to create efficient network interactions.
• Experience with Rust, Objective-C and C to integrate low-level solutions.

Additionally take part in Vision Hack hackaton with AI-Interviewer based on Robat app.

1. **Cuddle - Sex & Love tracker - Cuddle makes couples counselling simple. Improve your relationship and intimate life, stay connected, and deepen intimacy as a couple.**

Working at existed project on fixing bugs and adding new features. Uploading new versions to App Store, walkthrough app review process.

• worked on creation of new screens (populate it with custom elements like Calendar, tables, text fields, buttons, etc.), business logic to it and linked API calls from backend
• adding In-App purchases feature

Stack: Swift, MVVM + CoordinatorFlow, UIKit (Storyboards + xibs), Reactive Swift, URLSession, Amplitude Analytics.

1. Blago Service - a mobile application that hosts services and work in the USA. Convenient map navigation will help you find interesting offers near your home.

Working from scratch to App Store release (US App Store).

• added core app feature: integrated Maps using Google Maps framework;
• added In-App purchases;
• added AppsFlyer Analytics;
• estimated tasks on time.

Stack: Swift, SwiftUI, MVVM, Async / await, StoreKit, Core Data, Google Maps, Firebase as backend & database service.