Message from the CTO

Our Mission: WOW Our Users

Under the mission of “WOW Our Users!”, we strive to deliver genuinely inspiring experiences to our users.

To understand how we achieve this, let us look at how we put that mission into practice and the central role engineers play in making it happen.

What “WOW” Means

At LY, we don’t just chase user expectations — we aim to operate one step beyond and deliver new value.

By combining the power of AI with the behavioral data from hundreds of millions of daily users, we deliver answers before users even know what they’re looking for

Messaging, search, commerce — these are not isolated products, but a single, seamless experience that weaves through a person’s day.

Engineering is how that vision becomes reality. It’s not just about implementing features, but designing the path from intent to impact, ensuring that the value we create is reliably delivered to users.

Speed as a System

Speed is a competitive advantage. However, we don’t pursue speed for its own sake.

We design systems that accelerate everything — development, testing, and decision-making alike.

By leveraging generative AI and infrastructure automation, we remove bottlenecks before they form and adjust direction before momentum stalls.

We are not looking for people who run faster. We want people who design better tracks. Speed is not just a goal. It’s fundamental to how we work.

Break Things. Build Better.

Existing approaches don’t create new value — they replicate old assumptions.

Rather than accepting existing assumptions as a baseline, we treat them as problems worth rethinking.

We redesign from the ground up, and when necessary, we rewrite them in code and see implementation through to the end.

User experiences once thought impossible are solved through better architecture. Limitations that seemed fixed are surpassed through engineering.

When imagination and execution come together, things that never existed before become reality.

Uncompromising Standards

When hundreds of millions of people rely on your product every day, there is no such thing as “good enough.”

We go beyond what users can perceive — addressing the latency they didn’t consciously register and the issues buried in logs before they surface.

Trust must be built into the design before users ever have a reason to question it, and it is something we can never compromise on. Quality is not something added at the end. It is determined from the very first line of design, and the standard only moves upward.

Build the Future Together

At the intersection of technology and creativity, engineers are not passive participants — they are the ones who design what comes next.

We are here to bring into the world value that does not yet have a name.

We build it together.

Euivin Park
Executive Corporate Officer, CTO (Chief Technology Officer)
LY Corporation