Yunus Emre Celebi

Native iOS development of Unite Phone, the business softphone of a Netherlands-based VoIP provider: SwiftUI, CallKit, PushKit and SIP calling stack.

• Unite Phone — Business VoIP Softphone (App Store · Website)

Swift · SwiftUI · CallKit · SIP

A comprehensive service marketplace connecting users with verified local professionals across 2000+ categories. Features bidding mechanism and complete service lifecycle management.

• Her İş Cepte — Service Marketplace (App Store · Google Play · Website)

Flutter · Clean Architecture · BLoC

Contributed to a large-scale video chat app with 3M+ downloads. Developed efficient video chat modules using AgoraSDK and Socket.

• Matchpub — Live Video Chat (App Store)

Swift · SwiftUI · AgoraSDK · Socket

Started as iOS Team Lead, promoted to Head of Mobile. Managed iOS/Android teams, defined Super App architecture, led R&D efforts. Worked directly with CEO, CTO, and CPO.

• Metatime — Blockchain Super App

Team Management · Super App · R&D · Crypto Wallets

Led major enterprise projects as developer and team lead. Worked on both in-house and outsource projects for major Turkish brands.

• Emlakjet — Real Estate Platform (App Store)
• Hepsipartner — Vendor Operations (App Store)
• Metro Türkiye — Wholesale Market (App Store)
• Divarese — Fashion Shopping (App Store)

Swift · VIPER · GraphQL · ReactiveKit

Focused on delivering high-quality iOS applications. Also supported Android projects when needed.

• İstanbullines — Ro-Ro Ferry Tickets (Website)
• Asset Doctor — Asset Management
• Carbon Mobility — Fleet Analytics
• Companity — Corporate Social Network

Swift · MVC · Kotlin

Mobile platform for bill payments including electricity, water, telecom, natural gas, insurance and tax services.

• Faturamatik — Payment Institution (App Store · Google Play)

Swift · MVC · Kotlin

Company specializing in developing applications for rent-a-car businesses. Vehicle tracking, damage documentation, and fleet management.

• Dijital Rent A Car — Fleet Management

Swift · Java

Various personal and equity-based projects including AI-powered apps, utilities, games, and startup projects.

• Colloon Game — Fast-Paced Arcade Shooter (Indie Game Developer, 2025 – Present)
  Hit the right color, chain combos, and dodge bombs. Built with Flutter Flame Engine (Dart, Firebase, AdMob, RevenueCat).
  Flutter · Flame Engine · Dart · Firebase · AdMob · RevenueCat · Hive · Canvas Rendering
  App Store · Google Play · Website
• Word Loop Story — AI-Powered English Practice (Full Stack Developer, 2025 – Present)
  Practice English through AI-generated stories. Full stack development (SwiftUI, Python FastAPI, OpenAI API).
  SwiftUI · Python FastAPI · PostgreSQL · OpenAI API · RevenueCat · Google AdMob · Social Sign-in
  App Store · Website
• JustScanShare — Fast Document & Text Scanner (iOS Developer, 2025)
  A powerful document scanner with advanced OCR technology. Features high-quality scanning with smart edge detection, instant text extraction with multi-language support, and seamless iCloud sync across all devices. Share documents as PDF, IMAGE or text format instantly.
  Swift · VisionKit · OCR · iCloud Sync · RevenueCat
  App Store

• Budatamam — Grocery Delivery Startup
• Listele.app — Price Comparison
• Colloon Shot — Android Java - Canvas API Game
• Swipe - Edebiyat — Literature Authors & Works
• 4.5G Kontrol — Tech Utility App

SwiftUI · Swift · Python · Kotlin · Flutter · Dart