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Serhii Shapoval

@serhiishapoval

I build and scale production iOS apps for connected health products.

I've built production iOS apps for Proexe, Ciklum, CyberVision, Softheme, and Software MacKiev over 13+ years. Most recently, I helped deliver an indoor air-quality monitoring companion app used by more than 400K monthly active users.

I design mobile architecture, build shared Kotlin Multiplatform and native Swift logic, and take apps through testing, release, profiling, and production support. My work spans Swift, Objective-C, SwiftUI, UIKit, CoreBluetooth, HealthKit, APNS, unit testing, and migrations from legacy MVC and Objective-C codebases.

Experience

Work history, roles, and key accomplishments

Senior iOS Developer

Proexe

Jan 2023 - Jan 2025 (2 years)

Designed mobile application architecture, implemented shared business logic in Kotlin and iOS specific logic in Swift, managed app testing and release cycle, and achieved over 400K monthly active users.

Swift Kotlin SwiftUI CoreBluetooth CoreLocation Kotlin Multiplatform Fastlane APNS Firebase Mixpanel Swift Concurrency CI CD TestFlight Unleash Shape Up Scrum GitHub Swift Package Manager

iOS Developer

Ciklum

Jan 2017 - Jan 2023 (6 years)

Implemented business logic, recorded user workouts with live location and health data, migrated app from Objective-C to Swift and from MVC to MVVM+C architecture, and managed app testing and release cycle.

Swift Objective C UIKit Core Data CoreBluetooth CoreLocation MapKit HealthKit AFNetworking Crashlytics APNS Gitlab Cocoapods Foundation

iOS Developer

CyberVision Inc.

Jan 2014 - Jan 2016 (2 years)

Implemented business logic, designed and implemented custom BLE protocols, implemented UI in XIB and storyboard, and collaborated closely with hardware team.