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, Core Data, UserDefaults, SQLite, REST APIs, Clean Swift (VIP), MVVM,
Coordinator, MapKit, Core Location, Firebase, StoreKit, Adapty, RevenueCat, GCD, Swift Concurrency, Async/Await,
AppsFlyer, Affise, CocoaPods, SPM, WidgetKit, PassKit, Jira, Asana, ClickUp, Confluence, Git Flow, code review.

EXPERIENCE
Many to many
Sept 2025 — Present
iOS Developer
Project: National Park Service (NPS) – Official iOS App
Large-scale public app (420+ parks, 4.9 App Store rating)
Swift (Clean Swift/VIP), Mapbox, Core Data, Firebase
Built a fully offline park detection system with real-time geolocation
Developed a GeoJSON preprocessing pipeline (compression + simplification) → ~3.5 MB SQLite with RTree indexing
Implemented multi-strategy spatial matching with ray-casting validation for accuracy and performance
Optimized on-device geospatial queries for low-latency GPS resolution
Worked in a large codebase (~1200 Swift files) with strict Git Flow, CI, and code review processes
Project: Wayfinder– AI-powered iOS Assistant
Swift, SwiftUI, Core Data, AWS, OpenAI
Architected and built an AI assistant for medical visit documentation (offline-first)
Implemented dual speech recognition (cloud + on-device) with automatic fallback
Built AI pipeline for summarization, action extraction, and OCR ingestion
Engineered resilient background audio recording with recovery and Live Activities
Added connectivity handling, retries, and PII redaction for production reliability

Davydov Consulting Oct 2024 — Sep 2025
iOS Developer
Worked in a cross-functional international team on two iOS applications.
Project: PinToBe — Geolocation Photo App
Fixed long-standing critical issues and reduced crash rate by 85% (memory leaks)
Improved app launch time from 8s to 2–3s (async loading + caching)
Refactored in-app subscription system
Project: Essendi — Hotel Management App
Refactored architecture (delegates → closures) for better maintainability
Fixed critical authentication issues and persistent logout bugs
Integrated Microsoft SSO and improved overall app stability

Rock’n’Apps Sept 2023 — Oct 2024
iOS Developer
Developed and maintained iOS utility apps end-to-end (architecture → release), integrating Adapty, RevenueCat, AppsFlyer,
Affise, and Amplitude; improved performance (+30% responsiveness, −20% launch time) using Swift Concurrency and GCD;
implemented Firebase (Auth, Firestore, Remote Config, Analytics), built a robust async REST API layer with real-time UI
updates, and added geolocation features with MapKit and Core Location.

Apartment Rental App Jan 2023 — Sept 2023
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