- Introduced a new flight refund feature and completely overhauled the authentication module using SwiftUI.- Added over 10 elements to the Design System and revamped the token-element formatting logic in JavaScript- Achieved a 17% bug reduction count over three weeks and resolved a critical bug in online flight registration.

- Enhanced OneTouch Reveal by implementing a patient-doctor syncing feature, ensuring seamless data exchange.- Addressed and resolved critical glucometer syncing issues to guarantee reliable data transfer in OneTouch Reveal.- Introduced partner brand support to the MRMP app, enabling its use across partner stores.

- Remade app animations and accelerated loading of content-heavy screens by ±15%- Refactored ±30% of app screens, fixed memory leaks that lead crash.- Implemented UITests that saved up to 5 hours of manual testing time.

Developed a cutting edge sushi delivery app managing the entire development process from scratch to AppStore release.

Developed an advanced notes module featuring lists, checkboxes, drawing, etc. capabilities, mirroring the standard iOS Notes app.

Revitalized a Safari content blocker by implementing an innovative In-App Purchase system, along with new settings and statistics screens that offer security insights, significantly enhancing sales.

Developed and launched a construction equipment marketplace app, transitioning from a client's concept to AppStore release.

Developed a food delivery app for a premium sushi bar in Kyiv from scratch to AppStore release.