| Skill | Career | |
|---|---|---|
| Language | Japanese | native |
| English | daily conversation | |
| Programming | Python | 13 years |
| Ruby | 3 years | |
| Objective-C | 3 years | |
| Swift | 3 year | |
| Arduino | 2 year | |
| C | 3 year | |
| C++ | 1 year | |
| Perl | 3 years | |
| Java | 1.5 years | |
| MySQL | 5 years | |
| PHP | 7 years | |
| Web Framework | Django | 8years |
| Ruby on Rails | 3 years | |
| Technology | GIS1 | 6 years |
| BLE | 3 year | |
| SCM2 | git | 4 years |
| github | 13 years | |
| mercurial | 2 years | |
| subversion | 3 years | |
| Database | PostgreSQL | 8 years |
| MongoDB | 3 years | |
| DynamoDB | 2 years | |
| memcached | 4 years | |
| Redis | 3 years | |
| Impala / Hadoop | 1 year | |
| OS | Debian | 13 years |
| Ubuntu | 5 years | |
| Red Hat | 5 years | |
| Cloud | AWS | 12 years |
| Google App Engine | 1 year | |
| CI / CD | Github Actions | 1 year |
| CircleCI | 6 years | |
| IaC | terraform | 4 year |
| ansible | 3 years | |
| chef | 2 years | |
| Management | Certified Scrum Master | 1 year |