Analyze JMDC and Omron Group data to develop new data-driven services, build predictive models, advise industry clients, improve services with machine learning, and publish findings.
About this role
The role develops and operates web systems that exchange data with medical institutions. Responsibilities also include building and operating ETL platforms connected to internal core systems and business partners, and developing and operating services that use medical data. The engineer will work with group companies on service planning, design, and development, and collaborate with sales and planning staff to create products that provide user value. Duties may be adjusted according to the person’s interests and areas of expertise.
The work involves services handling data at a scale of hundreds of millions to several billion records. It provides experience with medical institution data, including DPC, claims, and pharmaceutical data, as well as knowledge of medical institution operations. The services address medical cost optimization in Japan and improvements to hospital management.
The development organization consists of small teams, generally two to four engineers, working closely with planning and sales and with individual responsibility for development. ETL infrastructure and data-utilization functions are developed after requirements are defined in detail, while UI/UX-related work may use an agile approach.
The stated development environment includes Next.js and Vue.js for the frontend; Tableau Cloud for business intelligence; and AWS services including Amplify Gen 2, Step Functions, Lambda, Redshift Serverless, and SageMaker. GitHub is used for code management, with Slack, Backlog, Confluence, and Google Workspace for communication. AI tools named in the posting are Claude Code and Gemini.
Applicants must have at least three years of experience developing, operating, and maintaining web services using Python, Ruby, or similar technologies; experience using services through the AWS console; and experience with team development using Git. Experience with React or Next.js frontend development, system development using complex SQL against large-scale data, test-driven development, CI/CD construction, and development using AI agents is welcomed. The role is based initially at the Tokyo office in Minato, Tokyo. Working hours use a flextime system with core hours from 11:00 to 15:00, standard working hours of eight hours per day, and a 60-minute break. The position is full-time and includes social insurance, commuting allowance up to 150,000 yen per month, company-defined contribution pension, paid leave, and other stated leave and employee benefit programs.
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