App Developer, iOS or Android (front-end)

Location: Tokyo, Japan      Department: Engineering      Type: Full Time     Min. Experience: Mid Level


Asken Diet is a health tech venture company headquartered in Tokyo where it manages it's apps for the Japanese and North American markets. The Asken Diet app is the #1 Health & Fitness app in Japan on both the iOS and Google Play app stores. With millions of users in Japan, we made the decision to expand to North America, releasing our app in the U.S. and Canada. Our users log meals, track exercises and shed weight to hit their diet goals. On average, new users lose 8lbs. in their first three months using Asken Diet. Our engineers worked with our team of hundreds of licensed nutritionists and dietitians to build a custom artificial intelligence that generate tailored diet advice for each user. We partnered with Sony who built an industry-leading food photo recognition technology that allows users to log and track their meals with just a photo.


As a core member of our app development team, you will have the opportunity to join a growing team serving our new English-based app serving Canada and the U.S. Even though we are a small team (for now) we are working on deep and interesting challenges. Asken Diet is disrupting the health tech sector while helping to solve the growing obesity problem in North America and it will be your job to help us develop and improve our app, putting our custom-built nutrition A.I. in the hands (and phones) of our growing user base.

Your day to day main job roles as the app developer:

  • Understand user experience & flow, business objectives and the technical requirements
  • Assist with design, develop and engineer changes to the Asken Diet app from wireframes (working with Business manager and UX/UI designer) to publishing on app stores
  • Regular updates, testing and bug fixes to ensure the app reliability
  • Be bold enough to challenge status quo by using any technology to revolutionize the user's experiences
  • 3rd party Integration with external partners such as Apple HealthKit, Google Fit, FitbitOS or internal APIs

Must have:

  • iOS or Android development experience. Good to have experience from creation to publishing an app on an app store
  • Working with software such as X-code, from storyboard to development
  • Hands on experience and knowledge of working with and utilizing 3rd Party API integration, such as with Facebook, Apple HealthKit, Google Fit or FitbitOS
  • Proactive and have good communication skills
  • Japanese communication level

Good to have:

  • Some knowledge of AWS, MySQL and PHP (CakePHP) backend based on Aurora
  • Experience with data analytics
  • Design skills in Sketch
  • Knowledge of Scrum
  • Background in computer science, with some understanding of algorithms, and data structures

Other details:

  • Salary: ¥5 million - ¥8 million yen (depending on experience)
  • Benefits:
    • Health insurance
    • National holidays
    • Year-end and New Year holidays
    • Annual paid vacation
  • Interview process:
    • Document review
    • Individual interview (2 rounds)
    • Group interview (by Executive team)  
  • Location: Tokyo Opera City Tower 28F, Nishi-Shinjuku 3-chome, Shinjuku-ku, Tokyo (map)
  • Trial period: 3 months
  • Hours: 10:00 - 19:00 (w/ flex system)