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Posted Apr 16, 2026

IOS/Android App Development Engineer

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Job Description • Utilize optimal technologies to implement various functions, including existing and new features of the "JoyHer" app. • Develop while closely communicating with designers based on screen transitions, considering feasibility. • Perform troubleshooting calmly and promptly address and resolve any bugs that occur. • A strong willingness to learn new technologies and a spirit of challenge is essential. Requirements • Alignment with YStory's mission and vision. • Experience in developing and operating consumer-facing apps, or experience in technical selection and codebase improvement, current or past affiliation with web, tech, or startup companies. • Mobile: Experience with iOS development using Swift and Android development using Kotlin. • Mobile:If you could only use swift or Kotlin but want to learn new language, we also welcome you to join us. • Data Platform: Experience with development using Firebase. • Ability to design and develop with consideration for performance and scalability. • Communication skills to collaborate with stakeholders and execute product development. • Japanese or English in communication level. • Ability to review design documents from tools such as Figma and Canva. • (Preferred) Experience in project management or as a team leader. Work Conditions • Employment type (permanent employee, contractor, intern, etc.): Permanent employee, side jobs allowed. • Work location: Remote work allowed, with the ability to come to the Roppongi Hills ANRI CIRCLE Office once a month. • Working hours: Flexible working hours (no core time, no flexible time). Salary • Monthly salary (including fixed overtime pay). • Determined based on skills, experience, and abilities. • Probation period: 6 months after joining (salary same as permanent employment during this period).
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