Backend Engineer

KAKEHASHI is recruiting a Backend Engineer for Pocket Musubi, an application that connects pharmacists and patients and supports medication follow-up by pharmacies. The posting states that the product is used by approximately 5,000 pharmacies and that its continued growth has created a need to address technical issues and technical debt while developing new functionality.

The role primarily covers backend development for Pocket Musubi. Responsibilities include building applications based on new plans and customer requests, developing APIs with Python and TypeScript using REST and GraphQL, constructing infrastructure based on an AWS serverless architecture, and creating infrastructure with infrastructure-as-code tools such as AWS CDK and Terraform. The engineer will also identify technical issues inside and outside the team, propose and implement solutions, build and operate monitoring systems with Datadog and Sentry, support the team with technical knowledge, investigate technology and feasibility for new initiatives, investigate customer inquiries, tune performance, and participate in Scrum events.

Backend engineers may also take on frontend development tasks using React, while frontend engineers may work on backend tasks. This approach is intended to reduce dependence on individual team members and support skill development. The team uses Scrum and communicates with product managers, pharmacists, designers, engineers, and Scrum Masters across different roles.

The team is described as being around 10 people and working on a complex healthcare system with members who have substantial domain knowledge. The listed team structure includes one product manager, one development director/Scrum Master, seven engineers, and three QA members.

The named development environment includes Python, TypeScript, Django, MySQL, React, Next.js, and Databricks. Infrastructure technologies include AWS services such as AWS Amplify, S3, API Gateway, Lambda, and RDS, together with AWS CDK and Terraform. Monitoring and incident-response tools are Datadog, Sentry, and PagerDuty. The posting also names agile and Scrum development, GitHub, Google Suite, Slack, Zoom, esa, Figma, and FigJam.

The main working style is fully remote, with office attendance available when necessary. The listed office location is 105-0003, 2-8-6 Nishishinbashi, Minato-ku, Tokyo, Sumitomo Fudosan Hibiya Building 5F. The supplied posting does not state a formal education requirement or a years-of-experience threshold.

The stated selection process consists of document screening, a casual interview, three to four interviews, an aptitude test, a reference check using back check, and an offer meeting. The process may change depending on circumstances.