Hakan Sevimoğlu Hakan SevimoğluFreelance Developer · 18 yrs
Swift · SwiftUI · SwiftData

Swift Developer: Fast, Secure, Native iOS Apps Built with SwiftUI

I write native iOS apps in Swift and SwiftUI with a modern architecture that work offline and make full use of the device hardware.

Quick answerA Swift developer builds iOS and iPadOS apps with Apple's Swift programming language and the SwiftUI interface framework. Hakan Sevimoğlu has built camera-based quality control, security scanning, mobile POS and content apps using SwiftUI, SwiftData, Swift Concurrency (async/await), CoreML, Vision, AVFoundation and HealthKit.

Written by Hakan Sevimoğlu · Last updated:

Hakan Sevimoğlu – freelance full stack developer and Apple iOS & Android app developer in Izmir, Turkey: Android & iOS, PHP/Laravel, Windows, API integrations, embedded systems, e-commerce and SEO
Hakan Sevimoğlu — Apple iOS & Android developer, IzmirNative iOS apps with Swift/SwiftUI, Android and hybrid apps; PHP/Laravel backends, API and payment integrations, embedded systems. Based in Izmir, working on site and remotely across Turkey and Europe.

Why go native with Swift and SwiftUI?

With its type safety, memory safety and compiled performance, Swift is the primary language of Apple platforms. SwiftUI lets you write interfaces declaratively, with dark mode, Dynamic Type and accessibility supported out of the box. The camera, sensors, notifications and on-device AI are accessed directly, with no bridge layer in between.

Work that cross-platform frameworks struggle with — real-time camera processing, object detection with Vision, background location and notifications, HealthKit data — runs fast and reliably in Swift.

Architecture and code quality

I structure projects with MVVM and a modular layout: SwiftData or CoreData in the data layer, a type-safe API client built on async/await in the networking layer, and testable services for business logic. Existing UIKit or Objective-C projects can be migrated to SwiftUI step by step, without breaking the parts that already work.

What I offer

  • SwiftUI

    Declarative, accessible, dark-mode-ready interfaces.

  • SwiftData / CoreData

    Offline-first data layer and sync.

  • Swift Concurrency

    Safe, smooth networking and data work with async/await and actors.

  • CoreML & Vision

    Image classification and detection with on-device AI.

  • AVFoundation & HealthKit

    Camera, audio and health data integrations.

  • Migrating from UIKit

    Gradual move of legacy projects to SwiftUI without breaking them.

Technologies I use

Swift 6SwiftUISwiftDataCombineasync/awaitCoreMLVisionAVFoundationHealthKitXCTestSwift Package Manager

Official documentation and resources

Standards and official documentation I follow in projects:

Example projects

A selection of live projects serving real users.

How we work

  1. Free intro call

    We clarify needs, existing systems and goals together.

  2. Quote & roadmap

    Scope, technology, timeline and budget within 24 hours.

  3. Staged development

    Weekly demos and a live test environment.

  4. Launch & support

    Go-live, training and ongoing maintenance.

Free pre-analysisThe first meeting and roadmap are completely free, with no obligation.

Staged delivery and approvalYou review each module on a test environment before we move on.

Written scope and rightsScope, delivery and source code rights are defined in the contract.

Frequently asked questions

What does a Swift developer do?

A Swift developer builds the interface, data layer, networking and device integrations of iPhone and iPad apps using the Swift language.

Should I use SwiftUI or UIKit?

SwiftUI is recommended for new projects; development is faster and Apple's new features arrive in SwiftUI first. Existing UIKit projects can be migrated gradually.

Can you build Android apps with Swift?

No; Android uses Kotlin. iOS (Swift) and Android (Kotlin) apps can be developed in parallel on the same backend.

Can you take over my existing Swift project?

Yes; the codebase and architecture are reviewed first, then bugs are fixed and new features are added without breaking what already works.

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