Ichiro Iwai, iOS Developer in Tokyo, Japan
Ichiro Iwai

iOS Developer in Tokyo, Japan

Member since November 7, 2019
Ichiro is a mobile and web application developer who has been developing native iOS and Android applications, React Native mobile applications, and web back end for eight years. During the past few years, he has developed iOS apps by using Swift and Objective-C and Android apps by using Kotlin and native Java. He has also developed iOS and Android apps by using React-Native.
Ichiro is now available for hire


  • ClipIt, Inc (via Toptal)
    Xbox, Facebook, Instagram, Firebase, Social Network Analytics...
  • Modacity Inc
    Programming, Audio, Firebase, iOS, Swift, CocoaPods, React, Swift 4, Xcode...
  • Shuya Pty, Ltd
    REST APIs, Kotlin, Objective-C, Android, iOS, CocoaPods, Swift 4, Xcode...



Tokyo, Japan



Preferred Environment

Visual Studio Code, Windows, Slack, MacOS, Android Studio, Xcode

The most amazing...

...application that I've developed in the past was an Android tablet game. It was developed in 4 months and gained millions of users after publishing to the store.


  • Senior iOS Developer

    2020 - 2020
    ClipIt, Inc (via Toptal)
    • Developed and successfully published the ClipIt iOS application by using React Native, Swift, and Firebase.
    • Provided graphic design services for the app as well. I am very familiar with mobile UI/UX, so I could easily provide the best experiences for mobile UI/UX.
    • Grew the app to over 100 downloads and 15 5-star ratings in the first week of launching.
    Technologies: Xbox, Facebook, Instagram, Firebase, Social Network Analytics, Video Streaming, Swift, iOS, Node.js, CocoaPods, React, Swift 4, Xcode, JavaScript, Mobile, Git, Mobile Apps, Hybrid Frameworks, React Native
  • Lead Full-stack Mobile Developer

    2018 - 2019
    Modacity Inc
    • Developed a Modacity application (iOS music practice application) by using Swift and Firebase. The app got over 100,000 downloads on the iTunes Store and got over 5,000 in-app purchase subscriptions.
    • Worked with the CEO of Modacity using Slack and Jira.
    • Contributed to the app launch, which received over 10,000 downloads and 2,000 subscribers within the first three months of launching.
    Technologies: Programming, Audio, Firebase, iOS, Swift, CocoaPods, React, Swift 4, Xcode, Mobile, Git, Mobile Apps, iPhone X
  • Mobile App Developer

    2017 - 2018
    Shuya Pty, Ltd
    • Developed the Tayket mobile application—a social app designed to give and take unnecessary items between users.
    • Worked with the web service back-end developer. I've also worked on the mobile front end (iOS and Android).
    • Developed an iOS application using Objective-C language and an Android application using Kotlin language.
    Technologies: REST APIs, Kotlin, Objective-C, Android, iOS, CocoaPods, Swift 4, Xcode, JavaScript, Mobile, Java, Git, Mobile Apps, Hybrid Frameworks, JSON
  • Full-stack Mobile Developer

    2016 - 2017
    SwitcheZ USA Inc
    • Developed the SwitcheZ USA application for iOS and Android to switch parking locations between users.
    • Worked remotely communicating via Slack and managing tasks with Jira and Trello boards.
    • Developed web back-end APIs and a mobile front end as a full-stack developer.
    • Developed and published the app on iTunes and Google Play Store. Used Apple Maps for the iOS version and used Google Maps for the Android version.
    Technologies: RESTful Development, RESTful APIs, Android, iOS, React Native, CocoaPods, Firebase, Swift 4, Xcode, Mobile, Git, Mobile Apps, REST APIs, Hybrid Frameworks, JSON
  • iOS and Mac App Developer

    2016 - 2017
    • Developed a Remi.ai iOS and Mac OS X app that can manage the fitness plan of users.
    • Had a remote-based contract, kept communication on Skype, and managed tasks by Trello.
    • Used iOS health kit framework and AI technology has been used in the API part.
    Technologies: Xcode, Artificial Intelligence (AI), Swift, iOS, Fitness, Healthcare, CocoaPods, Swift 4, Mobile, Git, Mobile Apps
  • iOS Full-stack Developer

    2015 - 2016
    SmallScreen Apps Inc
    • Developed an iOS app with a web back end. Web back end has included API server and admin CMS panel.
    • Used CakePHP framework for the web back end. The iOS app has been developed by Objective-C.
    Technologies: Model View Controller (MVC), CakePHP, GPS, Objective-C, Redux, CocoaPods, Swift 4, Xcode, Mobile, Git, Mobile Apps, REST APIs
  • Senior Full-stack Developer

    2012 - 2015
    InfiniteDesign Co, Ltd
    • Developed several iPad/iPhone/Android applications with web back end.
    • Implemented client-provided graphics and design.
    Technologies: PHP, UX, Mobile, Java, Swift, Objective-C, iOS, Android, CocoaPods, Swift 4, SQLite, JavaScript, Mobile Apps
  • Senior Android App Developer

    2011 - 2012
    7 Dragons, Inc
    • Developed several apps for Android tablets (Nook books and Amazon KindleFire) and games for 7 Dragons, Inc as a contracted mobile developer.
    • Used OpenGL ES technology for user-friendly interfaces.
    • Published apps to Nook App Store and Amazon App Store.
    Technologies: Tablets & Smartphones, OpenGL ES, Mobile, Android, Java, Mobile Apps


  • Clip It - Video Sharing iOs App for Pro Gamers

    I worked on a Swift-based iOS application using Firebase as a back end. Integrated video recording and photo capturing, importing photos, and videos from Facebook, Instagram, Xbox, and Twitter. The app also included a message and push notification feature.

  • Modacity - iOS Music Practice Application

    An iOS music practice application that I have developed by using Swift. Used Firebase as a back end.

    Swift version - finally updated to 5.0.
    Database - Firebase real-time database.
    Authentication - Firebase Authentication

  • Nets Lean App - iPad Healthcare Project Toolkit

    iPad healthcare project management application for NETS (North East Transformation System). I worked as a full-stack mobile developer for InfiniteDesign Co, Ltd, and developed this iPad application. On this project, the most important thing was to manage the SQLite and iPad UI. It included Paint-like tool development as well.

  • Remi.ai iOS and Mac OS App Development - Machine Learning Product

    Remi AI is the creator of the leading platform for supply chain and pricing optimization, allowing companies to find significant business value through automated optimization across these critical areas. Included iOS app and macOS app development (by using Objective-C in Xcode).

  • SwitcheZ USA - Mobile Car Parking Location Social Application

    SwitcheZ USA® is the free college parking app that helps college students find parking safely and grows each student’s social and business network.

    Available for both iOS and Android platforms.

    Developed this application in React Native and worked in a team.

  • Solitaire Package - Android Tablet Game Application

    Open GL ES based Android tablet game application. It included five kinds of solitaire games. This game has been developed for Nook e-Book and Amazon KindleFire (both are Android tablets) and published to B&N App Store and Amazon App Store.

    It hit the Top 10 game application in B&N App Store within three months after launch. Now the game is available in Amazon App Store.

  • LeanApp QI - iPad and Android Tablet Project Management Tool Application

    An iOS and Android project management tool application. Designed and developed for tablet sizes (iPad and Android tablets). I have developed this application for InfiniteDesign Co, Ltd. At the moment, the app is available on the Google Play Store.

  • Kids Animation Story Book Application Development

    Developed two kids animation storybook application for iOS.

    Lazy Birds - https://apps.apple.com/us/app/lazy-bird/id524743398

    Doubting Dasha - https://apps.apple.com/us/app/doubting-dasha/id614110016

  • Explore Hadrian’s Wall Explore App

    Hadrian's Wall Trails is designed for use at various locations along the Wall to enhance your visit to Hadrian's Wall Country. Developed for Android phones. Included Google Map views and used SQLite technology.

  • Christmas Tree Maker - Android Tablet App

    OpenGL ES based Christmas Tree maker application for Android tablet. I have developed this app for 7 Dragons Inc, published to Barnes & Noble App Store and Amazon App Store. Because of the performance for Android tablet large screen size, I have used OpenGL ES technology. Published with $1 price and got 30,000 users to download it during the Christmas season.

  • Tayket - iOS and Android Social Application

    iOS and Android mobile application that can give and take unnecessary items between users.


  • Languages

    Swift, Kotlin, Java, Objective-C, Swift 4, Swift 5, JavaScript, TypeScript
  • Frameworks

    Core Location, React Native, UIKit, Redux
  • Libraries/APIs

    REST APIs, Firebase iOS SDK, CocoaPods, React, Core Image, Node.js, Core Animation, OpenGL ES, Redux-saga, AVKit, Google Maps SDK
  • Tools

    Android Studio, Xcode, Git, Apple Push Notifications, GitHub, Slack, Jira
  • Paradigms

    RESTful Development, REST, Model View Controller (MVC), Model View Viewmodel (MVVM)
  • Platforms

    MacOS, Visual Studio Code, iOS, Android, Mobile, Firebase, Xbox
  • Storage

    SQLite, JSON
  • Other

    Programming, Tablets & Smartphones, GPS, UX, Video Streaming, RESTful APIs, Mobile Apps, iPhone X, Hybrid Frameworks, Push Notifications, AVFoundation, Image Manipulation, Android Development, Fitness, Social Network Analytics, Instagram, Facebook, Mobile Game Development, AWS, Artificial Intelligence (AI), Computer Science, Social, iPad, Tablet UI, Mobile UI, Mobile GPS
  • Industry Expertise



  • Bachelor of Engineering Degree in Faculty of Science and Engineering
    2005 - 2009
    Tokyo University - Tokyo, Japen

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