About Me

Hey, I'm Keremcan. I'm an iOS developer who builds simple, practical apps that solve real-world problems—designed with clarity, performance, and user experience in mind.

I've specialized in Swift and SwiftUI, with expertise across Apple frameworks (UIKit, Combine, Core Data/SwiftData, CloudKit) and modern concurrency (async/await). I also integrate Firebase-first architectures (Auth, Firestore, Functions, Messaging, Analytics) and AI APIs (Core ML, OpenAI, Vertex AI) into production apps.

I've launched multiple commercial apps on the App Store, including:
• Hypertrofie – AI-powered gym coach
• Expendica – AI financial assistant
• Repeatica – AI study notes with spaced repetition

I have 3+ years of experience developing apps end-to-end: from design, coding, and integrations to App Store deployment, monetization, and user feedback.

Beyond coding, I bring a product-focused mindset with strong UI/UX instincts and a track record of shipping polished, usable products. I thrive in environments where technical depth and creativity come together to deliver tools that people actually use and love.

Outside of work, I'm into weight training, languages (currently learning Spanish), and reading. I can speak English, Turkish, Polish and Russian

Technical Skills

Languages & Paradigms: Swift, Swift Concurrency (async/await), Protocol‑Oriented Programming, Generics, DI

UI Frameworks: SwiftUI, UIKit, Auto Layout, NavigationStack, Custom modifiers, Accessibility

Data & Sync: Core Data, SwiftData, CloudKit, Keychain, FileManager, SQLite

Networking: URLSession, REST/JSON, Codable, Error Handling, Retry/Backoff, Background transfers

Apple Services: StoreKit (IAP/subscriptions), Push Notifications (UNUserNotificationCenter), BackgroundTasks, App Groups, Widgets

Device & Media: AVFoundation, Photos, Camera access, CoreLocation, MapKit

Architecture & Patterns: MVVM, Clean boundaries, Modularization, SPM, SOLID

Testing & Quality: XCTest (unit/UI), XCUITest, Dependency injection for testability, Crash/analytics instrumentation

Tooling & Delivery: Xcode, Instruments, TestFlight, App Store Connect, Xcode Cloud/CI, Git/GitHub

Backend & Cloud: Firebase (Auth, Firestore, Functions, Storage, Analytics, Messaging), CloudKit, Google Cloud Platform

AI Integrations: Core ML, OpenAI API, Vertex AI, RAG, TensorFlow.js, LangChain.js

Additional (secondary): TypeScript, React/Next.js, Tailwind (for companion web tooling)