# Skills & Highlights

## Technical Skills

| key                    | value                                                                                                                                                                                       |
| ---------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Language               | Go(5 years+), Python(1.5y+), Java(2.5y+), PHP(2.5y+), C/C++(1y+), C#(1y+), TypeScript(2y+), JavaScript(5y+), Solidity(0.5y+)                                                                |
| Framework              | echo(5y+), Spring(2.5y+), CakePHP(1.5y+), Laravel(0.5y+), Web3.js(0.5y+), React.js(1.5y+), Redux(1.5y+), Vue.js(0.5y+), Nuxt.js(0.5y+), Unity(1y+), Flutter/Dart(<0.5y), backbone.js(1.5y+) |
| DB                     | MySQL, NoSQL                                                                                                                                                                                |
| OS                     | Linux, VMware, OpenStack                                                                                                                                                                    |
| Version control system | git, subversion                                                                                                                                                                             |
| CI/CD                  | GitHub Actions, CodeBuild, CircleCI, Jenkins                                                                                                                                                |
| Cloud (AWS)            | EC2, CodeCommit, Lambda, RDS, ECS, ECR, Beanstalk, Step Functions, CloudWatch, Secrets Manager, CDK, Cloud Formation                                                                        |
| Cloud (Azure)          | Container Apps, Database for MySQL, Cosmos DB, Functions, Front Door, Application Gateway, WAF, App Insights, Log Analytics, Blob, Bicep                                                    |
| Cloud (Cloudflare)     | Load Balancing, WAF                                                                                                                                                                         |
| Cloud (Other)          | Terraform, Heroku, Vercel, Netlify, Render                                                                                                                                                  |
| Test                   | go test, Junit, PHPUnit, Cypress                                                                                                                                                            |
| Blockchain             | Ethereum, LINE Blockchain                                                                                                                                                                   |
| Others                 | Devin, Github Copilot, OpenAPI(Swagger), Docker, devcontainer, Clean Architecture, DDD, MVC                                                                                                 |

## Highlights

I often have the opportunity to participate in the launch of new products and the early phases of development, with a strong focus on technology selection, team building, and establishing development structures.

As a CTO and Tech Lead in a startup, I have experience building a development organization from scratch and have contributed to improving team productivity through the introduction of Scrum and the establishment of development processes. I frequently receive feedback such as, "We can now visualize the development process," "We can now prioritize and develop the most important features," and "The development flow has been established, allowing for highly productive development."

Additionally, I am capable of handling all aspects of development, from requirements definition to design, implementation, and operation. I especially focus on designing systems with long-term maintainability in mind, putting emphasis on creating architectures that are easy to maintain. This has contributed to both system scalability and reducing operational costs.

I strive to provide value across product, team, and technology aspects, always aiming to deliver impact in these areas.

## Policy

I always strive to deliver genuine value by deeply understanding the background and purpose of a problem and selecting and executing the most appropriate solutions.\
Drawing on experience across product launch and growth, team building, and establishing development processes and technical foundations, I focus not only on short-term problem-solving but also on sustainable growth and scalable system design and operation.\
I also make a point of being hands-on when needed, while creating an environment where teams and individuals can perform at their best.
