Web Engineer

Oishi Kenko

Rails

AWS

Healthtech

About this role

This is a full-time Web Engineer role based in Tokyo. Online interviews are available.

The role covers development and operation of the company’s meal-support and other healthtech services. Responsibilities include identifying usability issues from the user perspective, proposing and implementing service initiatives, and managing the implementation team. The engineer works across planning, development, release, KPI monitoring, and effectiveness measurement. The main service is a personalized meal-support application that helps users search for recipes and create menus based on health conditions. The company also develops mobile-app APIs, business systems, and machine-learning pipelines, as well as services using healthcare content and data.

The position includes server-side and frontend development for the main website and related applications. Duties include designing and developing APIs, models, and databases with Ruby on Rails; designing and implementing frontend features with React.js, TypeScript, haml, and Sass; and building infrastructure with AWS or GCP. The standard infrastructure uses AWS, with services deployed on ECS. GCP is used for analytics and machine-learning work, and CircleCI is used for nearly all services.

At least three years of web application development experience is required, whether on the server side or frontend. Preferred experience includes Ruby on Rails server-side development, SPA implementation with React.js or Vue.js, infrastructure construction using AWS or GCP, collaborative development with GitHub, development-project management, and building or operating media services with WordPress.

The engineering organization has approximately 20 members with varied backgrounds, including engineers with business and product-owner capabilities and engineers specializing in particular technologies. The role involves working with other professions and participating in service planning, development, marketing initiatives, and measurement. Engineers are expected to take ownership of technology choices, pursue technical improvement, solve problems persistently, and adapt within a changing organization. Source review by other engineers is required.

A MacBook Pro is provided. The company uses a free-address office with work areas including indoor and outdoor spaces and lounge rooms. The posting does not state working hours, salary, Japanese-language requirements, or visa sponsorship.

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.