Senior iOS Developer / Platform

Lever, Inc.; Fatih; On-site; TRY 400,000 - 550,000; Full time

Benefits offered by this job

Private health insurance

Meal and commute support

Relocation assistance

Flexible working options

Job summary

AppNation is seeking a Senior iOS Developer to lead building and scaling elite iOS experiences across AI-powered mobile apps. You will own architecture decisions, optimize performance, and shape mobile engineering standards.

Strong Swift/SwiftUI skills and a passion for Apple ecosystem are essential. You will collaborate across teams to deliver high-quality features, including WidgetKit widgets, Live Activities, and App Intents, while mentoring teammates and contributing to CI/CD and release

Qualifications

• 5+ years of professional iOS development experience with production apps
• Proficiency in Swift and SwiftUI
• Strong knowledge of iOS app lifecycle and architecture
• Experience with App Store release processes and testing practices
• Willingness to learn Flutter and connect native iOS with cross‑platform code
• Excellent English communication skills

Responsibilities

• Build and maintain scalable iOS apps using Swift/SwiftUI
• Own native iOS layer in Flutter apps, architecture and integrations
• Implement features like WidgetKit widgets, Live Activities, and Push Notifications
• Integrate AI capabilities with Core ML and on-device models
• Design maintainable architectures and reusable components
• Profile performance, startup time, and memory usage with Instruments
• Mentor the team and share internal guidelines
• Collaborate with Flutter developers to boost iOS confidence

Skills

Swift

SwiftUI

iOS architecture

Performance profiling

Team mentoring

English proficiency

Education

Bachelor's degree in CS/Engineering or equivalent

Tools

Xcode

Instruments

CI/CD

StoreKit/WidgetKit

Job description

About AppNation

We build AI-powered mobile apps that reach millions of users worldwide.

Since 2021, AppNation has been creating products across AI, productivity, and mobile experiences. Our apps, including Genie, Translate AI, and Arch, have reached 90M+ users globally and ranked among the top apps in 30+ countries.

We are a team of builders, designers, and engineers who move fast, take ownership, and create products used by millions.

About the Role

We’re looking for a Senior iOS Developer to help us build and scale world-class mobile experiences.

You’ll work across our portfolio of AI-powered and consumer mobile apps, taking ownership from architecture decisions to production releases. You’ll solve challenging engineering problems, improve app performance, and help shape the technical standards of our mobile team.

What You’ll Do

• Build and maintain scalable, high-quality iOS applications using Swift and SwiftUI.
• Take ownership of the native iOS layer in our Flutter apps, including architecture, integrations and platform-specific capabilities.
• Build and ship Apple-native features in our apps, such as WidgetKit widgets, Live Activities and Dynamic Island, App Intents and Siri Shortcuts, push and notification extensions, Share extensions, Sign in with Apple and StoreKit 2.
• Bring AI capabilities to the native side where they make sense, using technologies such as Core ML, on-device models, Apple Intelligence APIs, Speech and Vision frameworks.
• Design and evolve maintainable iOS architectures, reusable components and clear boundaries between native and Flutter layers.
• Profile and optimize app performance, startup time, memory usage and responsiveness using Instruments and production monitoring tools.
• Ensure our apps look and work correctly across supported iPhone and iPad screen sizes, OS versions and form factors, including native components such as widgets and extensions.
• Improve engineering practices around testing, code review, CI/CD, release processes and mobile observability.
• Act as the team's iOS mentor by reviewing native code, writing internal guidelines, running knowledge-sharing sessions and helping our Flutter developers become confident on iOS.

What We’re Looking For

• At least 5 years of professional iOS development experience, including apps you have shipped and maintained in production on the App Store.
• Strong interest in the Apple ecosystem and modern iOS engineering practices.
• Strong proficiency in Swift and hands-on production experience with SwiftUI.
• Strong knowledge of iOS application architecture, application lifecycle, modular design and platform APIs.
• Strong knowledge of the Apple platform beyond the main app, including app extensions, WidgetKit, background modes, push notifications, StoreKit and the app lifecycle.
• A solid understanding of Swift Concurrency, including async/await, actors, structured concurrency and thread safety; experience with Combine is a plus.
• Strong understanding of ARC, memory management, retain cycles and performance profiling.
• Comfortable using Instruments and production diagnostics to identify and resolve performance and memory issues.
• Hands-on experience with Xcode project configuration, code signing, provisioning, CI/CD and the full App Store release process.
• Experience investigating production issues using crash reports, logs, metrics and profiling tools.
• Experience connecting native iOS code with a cross-platform framework, or a strong willingness to learn Flutter.
• Familiarity with Android and Kotlin is a plus.
• Experience working with Objective-C or legacy iOS codebases is a plus.
• Experience with visionOS, watchOS or tvOS is a plus.
• Working proficiency in English.
• A bachelor's degree in Computer Engineering, Computer Science or a related field, or equivalent practical experience.

Why AppNation?

• Build and scale products reaching millions of users globally.
• Work with talented people in a fast-moving AI-first environment.
• Take ownership and see your impact directly in the products you build.
• Grow quickly with opportunities to lead projects and shape technical decisions.
• Enjoy competitive compensation and benefits, including private health insurance, meal and commute support, relocation support, and flexible working options.

Our Hiring Process

Application Review → Interview → Technical Assessment → Final Interviews

At AppNation, we set ambitious goals and challenge ourselves to build products that reach millions of people. We value curiosity, ownership, and continuous growth. If this role excites you and you're ready to make an impact, we'd love to hear from you.