On January 20, 2026, I had the opportunity to speak at the 'GNP 2026 (New Leader! Young & Leaders!)' event. To be honest, even as I was about to step onto the stage, I wondered whether these stories would resonate with the audience. But I wanted to share the genuine concerns I've been grappling with in the field.

The first topic I introduced was 'Devup-UI', developed by our team. While it has a somewhat technical name—a Zero Runtime CSS-in-JS library—it embodies our relentless pursuit of performance. I was relieved that we could prove its performance through benchmark numbers, and many people showed interest after the presentation. Watching the GitHub star count grow, I felt a sense of fulfillment knowing that our efforts could contribute, even in a small way, to the developer community.

The second topic was 'Vespertide', a cross-language ORM-based database migration tool that hasn't even reached its major version release yet. Despite this, backend developers asked many questions and showed genuine interest. While sharing something incomplete felt daunting, it reminded me that the essence of open source is ultimately about building together.

What I wanted to emphasize most in this presentation was the relationship between AI and developers. In the AI era, what should developers create, and how should we take responsibility? I've been continuously confronting this question in the field. Rather than viewing AI merely as a tool that helps write code faster, I shared my experiences on how we can utilize it as a development partner that shares responsibility for code quality, focusing on actual open source cases.

From my days as a Tizen Specialist at Samsung Electronics, through writing 'HTML&CSS Made Easy', serving as an Expert in the Ministry of Science and ICT's SW Maestro program, and now mentoring for the third consecutive year at the Ministry's Open Source Contribution Academy, I've always asked myself the same questions: Who is technology ultimately for, and what responsibilities must we bear?

As I stepped off the stage, I realized that this presentation wasn't simply about introducing technology—it was a moment of connection with developers who share the same concerns. I hope to continue these genuine conversations moving forward.