iOS エンジニア / Software Engineer - iOS

Summary

On the iOS team, we are passionate about building compelling user experiences for U-NEXT’s iOS apps that bring delight and joy to millions of users around Japan. Our U-NEXT app is rated 4.6 stars out of 5.0 in the App Store.

U-NEXT app on App Store(https://itunes.apple.com/jp/app/u-next/id882477693?mt=8)

We are seeking individuals who are enthusiastic about native iOS development and enjoy bringing new engaging experiences to our iOS applications. We build our apps fully in Swift and stay up to date with the latest versions. People who excel on the iOS team are self-motivated team workers that are product- and detail-oriented.

If you love building incredible mobile experiences that touch a huge number of users, we want to talk!

Responsibilities

As an iOS developer at U-NEXT you will:

• build applications for the iPhone and iPad platforms.
• collaborate inside and across teams to define, design, and ship our products.
• ensure the performance, quality, and responsiveness of the iOS applications.
• improve and maintain our automated unit, snapshot, and UI tests.

Minimum qualification

• 3+ years of experience developing iOS apps.
• 3+ years of team working experience.
• Proficiency in Swift.
• Good understanding of UIKit.
• Good understanding of code versioning tools such as git.
• Experience with performance and memory tuning using tools such as Xcode Instruments.
• Proficiency in Japanese or English

Preferred qualifications

• Familiarity with application architectures like MVVM and MVC.
• Familiarity with RESTful and/or GraphQL APIs for connecting to back-end services.
• Familiarity with unit and/or UI testing using XCtest.
• Experience using one or more frameworks like AVFoundation, StoreKit, CloudKit, Combine, SwiftUI, FireBase Cloud Messaging, etc.
• Understanding of concurrency and asynchronous API design using DispatchQueue, OperationQueues, or Swift’s Structured Concurrency.
• Good understanding of object-oriented and protocol-oriented programming.
• Understanding of operating system concepts such as threading, cross-process communication, etc.

Bonus qualifications

• Interest or proficiency in UX design.
• Interest or proficiency in UI design.
• Understanding of Apple’s API Design Guideline and Human Interface Guideline.
• Experience with shell scripting, python, or ruby.
• Experience with mobile databases such as Realm or CoreData.
• Understanding of TCP/IP, HTTP/HTTPS, and other foundational network protocols.
• Basic understanding of popular media formats and video streaming-related technologies such as HLS, DASH, MP4, and DRM.
• Experience with EPUB or other electronic book-related technologies.