Тетяна

Tetiana
• Middle iOS Developer

• 4 Years Experience
• Intermediate English Level
• [open contact info](look above in the "contact info" section)

Professional Summary

Middle iOS Developer with 4+ years of commercial experience engineering, scaling, and maintaining robust
native iOS applications using Swift, UIKit, SwiftUI, and MVVM architecture. Proven track record of delivering
high-impact mobile solutions across digital banking, travel, booking engines, food delivery, and social
networking domains. Proficient in architecting modular user interfaces, integrating secure third-party SDKs,
implementing complex geolocation logic, and building accessible, user-centric experiences.

Demonstrated expertise in writing clean, testable code while optimizing mobile application performance and
lifecycle stability. Actively incorporates state-of-the-art AI-assisted engineering tools—including GitHub Copilot,
ChatGPT, Claude, and Gemini—to accelerate code analysis, optimize debugging workflows, automate unit test
generation, and streamline system integration.

Tech Skills

S M A M R

Swift MapKit AdMob (iOS) MVVM RxSwift

S A G P S

SwiftUI Accessibility Git Postman Stripe SDK

Secondary Skills

CoreLocation UIKit CocoaPods StoreKit Xcode templates ARKit SceneKit Core Animation

AVFoundation Facebook SDK (iOS) TestFlight CoreData WatchKit

CV - Tetiana - Middle iOS Developer Page 1

Key Achievements

➔ Proficiency in Software Development
Engineered and shipped 4+ commercial iOS applications across fintech, booking, social media, and on-
demand delivery domains using Swift, UIKit, and MVVM.

Integrated enterprise-grade native frameworks and third-party SDKs, including MapKit, CoreLocation,
Firebase, StoreKit, AdMob, and Stripe SDK.
Migrated legacy Objective-C modules to clean Swift codebases, enhancing code readability, maintainability,
and test coverage.

Developed responsive, adaptive user interfaces supporting multiple device form factors, dynamic orientation,
and iOS versions.

➔ Collaborative Creativity
Partnered closely with UI/UX designers, backend engineers, and product managers to translate complex
business requirements into intuitive iOS features.
Spearheaded cross-functional technical spikes to assess third-party SDK compatibility, accelerating feature
roadmap execution.
Co-designed optimized RESTful API contracts with backend teams, minimizing mobile network payloads and
battery consumption.

➔ Technical Guidance and Mentorship
Formulated and documented iOS engineering best practices, focusing on MVVM separation of concerns,
memory management, and clean code principles.

Led code reviews and technical knowledge-sharing sessions on native iOS APIs, modern concurrency, and
reactive programming with RxSwift.

➔ Enhancement of Performance and Scalability
Re-architected monolithic view controllers into modular MVVM components, significantly reducing
cyclomatic complexity and memory footprint.
Optimized location tracking and map rendering pipelines, mitigating battery drain and eliminating frame
drops during heavy user interactions.

Implemented advanced caching and asynchronous data handling routines, accelerating screen loading
speeds across high-traffic feeds.

Education

Master's degree in Mathematics SEP, 2009 – JUN, 2014

Volodymyr Vynnychenko Central Ukrainian State University

CV - Tetiana - Middle iOS Developer Page 2

Last Projects Engaged

Digital Banking Application
Enterprise-grade mobile banking solution offering secure multi-currency account management, real-time transaction
tracking, and authenticated financial services, successfully transitioned from presale stage into an active product.

Technologies: Swift, UIKit, MVVM, ChatGPT, GitHub Copilot

Engineered secure, reactive banking dashboard modules using Swift and UIKit under strict MVVM architecture.
Implemented robust client-side data validation and network layer security protocols for sensitive transactional
flows.
Diagnosed and resolved memory leaks and lifecycle bottlenecks using Xcode Instruments, boosting app runtime
stability.

Leveraged GitHub Copilot and ChatGPT to systematically draft unit tests and validate edge cases across critical
calculation services.

Travel Booking Platform
End-to-end accommodation discovery and reservation ecosystem enabling users to search, filter, and securely book
lodgings worldwide with real-time availability and dynamic pricing.

Technologies: Swift, iOS, Objective-C, AWS, Google Maps, Stripe, API

Built interactive location-based accommodation search integrating Google Maps SDK with custom clustering and
filtering logic.

Integrated Stripe SDK to handle multi-tier in-app payment transactions, refunds, and localized checkout workflows.
Modernized legacy Objective-C networking routines into strongly-typed Swift components, reducing API failure
rates.

Accelerated third-party API integration and edge-case testing by generating contract mockups via Claude and
Copilot.

Travel Social Network
Feature-rich community platform connecting global travelers through geo-tagged multimedia posts, group
discussions, event meetups, and real-time interaction.

Technologies: Firebase, Swift, UIKit, MVVM, WebKit, Photos, MapKit, Core Location, ChatGPT, GitHub Copilot

Engineered real-time place discovery and interactive travel maps utilizing MapKit and CoreLocation background
services.
Developed dynamic multimedia feed components supporting video playback, photo galleries, comments, and
member invitations.

CV - Tetiana - Middle iOS Developer Page 3

Integrated Firebase Cloud Firestore and Authentication for real-time community data synchronization and user
sessions.
Optimized image caching and asynchronous image rendering pipelines, eliminating scrolling latency in media-
heavy feeds.

Food Delivery Platform
High-traffic on-demand delivery suite serving end-consumers and local merchant partners with fast order tracking and
accessible user interfaces.

Technologies: Swift, UIKit, iOS Accessibility APIs, VoiceOver, Xcode, Accessibility Inspector, ChatGPT, GitHub Copilot

Implemented comprehensive iOS Accessibility compliance (VoiceOver support, dynamic traits, accessibility hints)
across core ordering flows.
Audited and remediated 100% of accessibility defects identified via Xcode Accessibility Inspector, significantly
improving usability for visually impaired users.

Re-architected dynamic layout components to seamlessly adapt to iOS Dynamic Type and user font-scaling
preferences.
Utilized AI-assisted code analysis to scan and detect missing accessibility identifiers across legacy storyboard and
XIB files.

Event Management & Food Festival Platform
Comprehensive event discovery and operation platform featuring attendee ticket booking, dynamic festival venue
guides, and high-speed organizer ticket validation.

Technologies: Swift, UIKit, MapKit, Core Location, Firebase, CocoaPods, REST API, Core Animation, ChatGPT, Claude,
GitHub Copilot

Built a high-performance QR/barcode ticket validation scanner for event staff, cutting gate check-in wait times
substantially.

Developed interactive festival ground maps with custom points of interest and live geolocation tracking using
MapKit.
Designed engaging UI transitions and interactive micro-animations with Core Animation to boost attendee
engagement during events.
Synchronized schedule updates and schedule changes via Firebase push notifications and real-time database
listeners.

CV - Tetiana - Middle iOS Developer Page 4