Our team

JK Yoon

Co-founder, CEO

After 15 years in financial management and founding my own accounting firm, I knew there had to be a better way for finance teams to work. The challenge was clear: how to move beyond manual tasks and become a true strategic partner.


I decided to stop just thinking about the problem and start solving it. Together with a team, I launched Keepbook. We're bringing the power of AI to finance workflows, so finance teams can do more than just manage the finance, but can lead the company's future. Our goal is to empower CFOs and ambitious finance teams to reach their full strategic potential.

Ceyhun Cakir

Co-founder, CTO

Having started my software engineering journey at age 11, I've always been driven by the power of technology. Today, I lead technical and AI innovation at Keepbook, where my passion is to fundamentally improve finance workflows using state-of-the-art AI.


We're deeply integrating multi-AI agents into Keepbook's unified ecosystem. This LMOps enables sophisticated scenario planning and provides deep, actionable insights by accessing real-time databases. Our goal is to empower finance teams with quick, flexible analysis and customized inputs, so teams can make confident, strategic decisions.

Hwang Kim

Co-founder, CPO

My 20 years in digital product design have taught me one fundamental truth: "Great user experience always comes directly from the customer". The only way to get it right is to listen, listen again, and listen more.


As a co-founder, I'm personally committed to ensuring your voice directly shapes the future of Keepbook. I promise to remove the developer's point of view and put myself entirely in your shoes. Through Radical Empathy, I will drive Keepbook's product with a single goal: to build a truly great product that serves you.

Hyejin Oh

AI Product Design Lead

As a UX design expert, I lead the user experience at Keepbook. I believe that AI is fundamentally transforming the core concepts of contemporary UX. My mission is to harmonize the diverse, custom UX needs of each customer with the universal fundamentals of great design, and embed AI deep into the Keepbook.


With an uncompromising dedication to excellence, I strive to create a product that is not only functional but also a joy to use.