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Flutter Engineer for English speaker
| Hiring Company | AI monitoring app to protect children from dangerous chats |
| Location | Available across Japan |
| Job Type | Permanent Full-time |
| Salary | 7 million yen ~ 10 million yen |
Work Style
Remote Work and WFH Casual Clothing Side Business Ok Flex TimeJob Description
Job Overview
We are hiring two Flutter Engineers to own the mobile experience across Kodomamo Family and Kodomamo School. You will build new features, fix customer-reported issues, and help shape the technical direction of our apps — working closely with the CTO and a small, senior-heavy team.
Our apps directly protect children in tens of thousands of families and schools across Japan. The code you write matters.
What You'll Do
- Build and ship cross-platform features for Kodomamo Family and Kodomamo School (Flutter/Dart, iOS & Android).
- Collaborate with the CTO and backend engineers to scope, design, and deliver new product capabilities.
- Triage and resolve customer support queries that require engineering investigation or code changes.
- Write clean, well-tested Dart code and participate actively in code reviews.
- Contribute to architectural decisions — we want engineers who have opinions about how things should be built.
Tech Stack
- Mobile: Flutter / Dart
- Backend: Go, TypeScript
- Infra: Kubernetes, GCP
General Requirements
| Minimum Experience Level | Over 3 years |
| Career Level | Mid Career |
| Minimum English Level | Business Level (Amount Used: English Only) |
| Minimum Japanese Level | None |
| Minimum Education Level | High-School |
| Visa Status | Permission to work in Japan required |
Required Skills
Must-have:
- 2+ years of professional Flutter / Dart development.
- Shipped and maintained a production app on iOS and/or Android.
- Strong grasp of Flutter widget lifecycle, state management, and performance optimization.
- Comfortable reading API documentation and integrating with backend services.
- Communicates clearly in English (our working language); Japanese is a bonus, not required.
Preferred:
- Experience or curiosity with backend development (Go or TypeScript).
- Familiarity with AI-integrated mobile products.
- Experience in a startup or fast-paced product environment.
Job Location
- Available across Japan
Work Conditions
| Job Type | Permanent Full-time |
| Salary | 7 million yen ~ 10 million yen |
| Industry | Internet, Web Services |
Job Category
Company Details
| Company Type | Small/Medium Company (300 employees or less) |
| Non-Japanese Ratio | About half Japanese |
