CASE STUDY
Business automation systems and CRM development
A CRM that automates rental property operations, from collecting data to entering and publishing it on external services.

These screens are fictional images made with AI. They are not the actual product.
- Period
- 2026–
- Organization
- A Tokyo-based tech startup
- Role
- Software Engineer
- Area
- AUTOMATION / BACKEND
Building a CRM that automates rental property operations. With TypeScript and AWS, I automate integrations with external services, build screens that support phone operations, and run scheduled jobs with notifications.
From collection to publishing in one pipeline
Everything from collecting data to entering and publishing it on external web services runs as one automated flow, with image organization handled along the way.
- Scheduled run
- Collect data
- Organize
- Enter and publish
- Notify
Screens for phone operations
I built features that support phone operations, with input screens that follow the business workflow.
Scheduling, notifications, and integrations
Jobs run on a schedule on AWS and report results to chat. The spreadsheet integration was reworked to stay within API limits.
Keeping it fast and reliable
I improved slow database processing. Features are built alongside tests, starting from specifications and reviews.
Details are limited to information that can be shared publicly.