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 is a full-time, mid-level Rails engineering position based in Tokyo. The role focuses on the company's healthtech website and related applications, covering both server-side and front-end development.
Responsibilities include identifying usability issues and proposing improvements from the user's perspective; designing and developing APIs, models and databases with Ruby on Rails; and designing and developing front ends with React.js, TypeScript, Haml and Sass. The engineer will also help build infrastructure for the company's services using AWS and GCP. AWS is primarily used for infrastructure, with services deployed on ECS, while GCP is used for analytics and machine-learning tasks. CircleCI is used across nearly all services.
The main product is the Oishi Kenko meal-management and nutrition-support service for patients and consumers. The company also develops Kakaris, a meal-guidance support solution for medical institutions, as well as solutions for health insurance associations. The engineering work supports services at the intersection of food, health and medical care.
Applicants are expected to have service-development experience using a programming language, regardless of the language used. Professional Ruby experience is not required; experience with PHP or mobile application development can be applied to a career change into Ruby development. For a junior-development track, applicants may qualify through application-development experience using Ruby or Ruby on Rails, with at least four months of learning experience given as a guideline. Students applying under a new-graduate category are not eligible.
The company gives engineers substantial responsibility for considering and deciding development initiatives, selecting technologies and experiencing the service-development process from planning through delivery. Source-code review by another engineer is required. The team also aims to expand engineer-led initiatives based on user KPIs, including planning marketing measures, implementation and effect measurement. Engineers work with designers, registered dietitians and other specialists in a startup organization with approximately 45 members.
A MacBook Pro is provided. The workplace uses remote work and core-time flextime, and online interviews are available. New employees receive onboarding that includes monthly one-on-one lunches with a mentor and regular meetings with the CEO during the first six months.
This is an AI-generated summary of the employer's original posting — details can be incomplete, out of date or simply wrong. Always confirm everything on the official posting before applying.
Similar jobs
Develop and improve Android apps for health and nutrition services. Analyze user behavior, define features, improve app experiences, review code, test releases, and maintain mobile CI/CD.
As a data science research and development intern, analyze real-world food, health, and lifestyle data with Python and SQL for recommendation, clinical-research, and business-reporting projects.
Develop end-to-end machine-learning models for autonomous-driving taxis from camera and LiDAR data, then evaluate and optimize them in simulation and real vehicles.
Build and operate shared AWS cloud infrastructure across multiple products, using Terraform, Kubernetes and GitHub Actions to improve reliability and incident response.
Build and manage internal IT and security foundations, including policies, security tools, Microsoft 365, assets, accounts, help desk, and workflow automation. Remote and office work are available.