Use Python and SQL to analyze real-world food, health, and lifestyle data, contributing to recommendation systems, clinical research, visualizations, and business reports in a Tokyo R&D internship.
About this role
This full-time, mid-career role develops and operates the company's iOS app for people who want to maintain a healthy diet while managing illness or health concerns. The service is available on web and mobile, includes more than 12,000 recipes supervised by registered dietitians, and supports more than 80 diseases and life stages.
Responsibilities include designing, developing and operating new and improved features for the iOS app. The role contributes to the Tabering feature, which visualizes daily behavior and supports behavior change; the Diet Mode feature, which helps users monitor daily calorie balance; and projects to optimize the registration flow and improve the initial user experience. The engineer uses user feedback to form hypotheses, discusses how functions and content should support continued behavior, and participates in data analysis, A/B testing and review of user comments.
Engineers lead product development in a project structure without a director. The work covers planning, implementation, release and measurement of results. Development includes both larger feature additions and improvements planned with the CEO and other functions several times a year, and smaller, engineer-led UX improvement projects and feature tuning.
The development process includes clarifying issues, hypotheses, KPIs and user feedback in Notion; project kickoffs with designers and registered dietitians; UX design and wireframes in Figma; implementation planning in Notion and spreadsheets; daily stand-ups and task management with GitHub and Notion; internal testing through TestFlight; and post-release log analysis with BigQuery and Firebase in cooperation with the research and development team. Learnings are recorded in Notion and Scrapbox for later projects.
The iOS team works with Android and web engineers, designers, registered dietitians, editors, machine-learning specialists and data scientists. The team includes a senior engineer responsible for CI/CD improvements and technical selection, an engineer who previously worked as a registered dietitian, and an engineer with a venture-company background. After joining, the engineer starts with implementation in an existing project and gradually gains leadership experience. Skill maps and one-on-one meetings are used to identify development areas and goals.
The position is based in Tokyo. The company describes a one-floor office with free-address seating and selectable work areas such as workspaces and a lounge. Online interviews are available.
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