Костянтин

Kostiantyn Volkov
iOS Developer
[open contact info](look above in the "contact info" section) | [open contact info](look above in the "contact info" section) | Ukraine
xj.kynex.tech | github.com/NeyerXj | Telegram
[open contact info](look above in the "contact info" section)

PROFESSIONAL SUMMARY
iOS Developer with 3+ years of commercial experience, delivering apps from specifications and UI
implementation through App Store approval. Builds with Swift 6, SwiftUI and UIKit; independently manages
signing, TestFlight, App Review and release automation. Also develops Android apps and backend services
with Next.js and Python.

TECHNICAL SKILLS
iOS: Swift 6, SwiftUI, UIKit interoperability, Swift Concurrency (async/await, actors, Sendable), Swift Package
Manager (SPM)
Architecture and integration: MVVM, SOLID, REST APIs, URLSession, Codable, WKWebView, deep links,
APNs
Delivery and automation: Xcode 26+, App Store Connect, TestFlight, App Review, Fastlane, App Store
Connect API, CI/CD, Git
Additional development: Android; Next.js, TypeScript, Python, FastAPI; AI-assisted development, ASO

PROFESSIONAL EXPERIENCE

iOS Developer
Midnight.Works | Remote | Sep 2025 - 25 Sep 2026
Develop production SwiftUI features under NDA, extending an existing modular architecture.
Integrate REST APIs with pagination, prefetching and offline caching for content-heavy screens.
Build navigation stacks and presentation flows; instrument product funnels with Firebase and Amplitude.
Middle-Senior iOS / Full-Stack Developer
Polorix | Remote | Jan 2024 - Sep 2025
Delivered commercial iOS apps from architecture and implementation to App Store release and
post-release support.
Built modular SwiftUI and UIKit features, REST API integrations, Core Data storage, subscriptions and
authentication.
Developed Python/FastAPI backends and AI content pipelines with PostgreSQL, Redis and Docker
deployment.
Freelance iOS Developer
Self-employed | Remote | Feb 2022 - Sep 2024
Delivered iOS apps with onboarding, subscriptions, push notifications, offline caching and App Store
releases.
Built widget, keyboard and report extensions with shared storage through App Groups.

APP STORE DELIVERY AND AUTOMATION
Manage App Store Connect releases: certificates, provisioning profiles, build uploads, TestFlight,
metadata and App Review responses.
Automate signing, builds, beta distribution and metadata with Fastlane (match, gym, deliver, pilot), App
Store Connect API keys and CI pipelines.
Maintain privacy manifests (PrivacyInfo.xcprivacy) and Required Reason API declarations; integrate
WebView flows, push notifications and deep links.
Use AI coding assistants in daily development and generate icons, screenshots, ASO metadata and
localizations with output review.

SELECTED PROJECTS

Klad | Content organization and planning
SwiftUI, REST APIs, RevenueCat, Firebase, Amplitude, APNs
App Store: apps.apple.com/app/id6754760495
Built content collections, offline caching, reusable card components, subscriptions and push notifications;
resolved navigation and stability issues.

Nexyra | Wi-Fi and LAN diagnostics
Swift, iOS networking APIs, RevenueCat, Amplitude
App Store: apps.apple.com/app/id6759560010
Developed device discovery, port scanning, diagnostics and reports; handled long-running tests and
integrated subscriptions.

AuraWidgets | Home Screen widgets and trackers
SwiftUI, WidgetKit, App Intents, App Groups
App Store: apps.apple.com/app/id6759844756
Built photo widgets and interactive trackers with shared app-extension storage; resolved memory and
performance issues.

NureSchedule | University timetable
SwiftUI, MapKit, JSON APIs
App Store: apps.apple.com/app/id6742908592
Built week and month calendars, schedule synchronization, map routing and Look Around previews.

EDUCATION
Bachelor's degree in Computer Engineering | In progress
Kharkiv National University of Radio Electronics (NURE) | 2024 - 2028

LANGUAGES
English: B2 | Russian: Native | Ukrainian: Native | Spanish: A1