Алина

ALINA HRYSHCHENKO
IOS DEVELOPER
Tavira, Portugal | [відкрити контакти](див. вище в блоці «контактна інформація») | [відкрити контакти](див. вище в блоці «контактна інформація»)
[відкрити контакти](див. вище в блоці «контактна інформація»)

SUMMARY
iOS developer with commercial experience and a deep understanding of mobile development. Developed and
prepared several applications for publication in the App Store, working on both logic and complex UI. A fast learner,
goal-oriented, and ready to take on challenging tasks. Striving for professional growth and seeking opportunities to
apply my skills within a team.
SKILLS
SwiftUI, UIKit, Auto Layout, Core Animation, CoreData, UserDefaults, REST, MVVM, MVC, Coordinator, MapKit, Core
Location, Firebase, StoreKit, Adapty, RevenueCat, GCD, Swift concurrency, Async/Await, AppsFlyer, Affise, CocoaPods,
Swift Package Manager, Jira, Assana, Confluence, Git.

EXPERIENCE
Davydov Consulting
Apr 2025 — Present
iOS Developer
Working in a cross-functional international team on two mobile applications for the company's clients.
Project: PinToBe — Geolocation-Based Photo Management App
A mobile app for photographers with functionality for managing galleries, selling photos, subscriptions, and geolocation-
based notes. Includes cloud storage, in-app purchases, and content editing tools.
Resolved long-standing critical bugs, including issues unresolved for over a year
Reduced crash rate by 85% by fixing memory leaks in the location manager and view controllers
Decreased launch screen load time from 8+ seconds to 2–3 seconds via async data loading and caching
Completely refactored the in-app subscription system
Project: Hotel Intranet — Internal Hotel Management App
A companion iOS app for a large hotel chain’s internal management system. Enables staff to communicate, manage
bookings, access analytics, and handle guest service tasks.
Refactored architecture: migrated from delegate-based logic to closures, improving readability and maintainability
Resolved critical authentication bugs that caused persistent logout issues
Integrated Microsoft SSO for secure staff authentication
Fixed memory leaks and improved overall code quality and performance

Rock’n’Apps Aug 2024 — Apr 2025
iOS Developer
Developed and maintained iOS utility apps — from architecture design to release and App Store support.
Integrated Adapty, RevenueCat (in-app purchases and subscriptions), AppsFlyer, Affise, and Amplitude.
Used Swift Concurrency (async/await) and GCD to optimize multithreading, improving app responsiveness by 30%.
Set up Firebase Auth, Firestore Database, Remote Config, and Analytics — enabling secure authentication, data storage,
and feature management.
Built robust REST API interactions with async request handling, error management, and real-time UI updates.
Added support for MapKit and Core Location — implemented full geolocation and map interaction.
Optimized performance and reduced app launch time by 20%.

Fash Cards App
May 2024 — Aug 2024
iOS Developer
This is an app for vocabulary memorization using flashcards. Users can add new words and their translations, import
words, view a list of learned words, and use flashcards for studying. In the development process, I used technologies such
as UIKit, MVVM, CoreData, User Defaults. During my work as a developer, I learned to work independently, effectively plan
tasks, and accurately estimate the time required for their completion. I also developed the ability to quickly learn new
technologies.
Apartment Rental App Jan 2024 — May 2024
iOS Developer
Redesigned and implemented the UI according to Figma designs for an app allowing users to search and view rental
apartments, schedule viewings, and use their phone as a key to access properties.

LANGUAGE
Russian, Ukrainian, English