About

I’m Heyjune, a culturally fluent, human-first designer known for building 0→1 products in fast-paced startup environments.
I specialize in mobile-first B2C and hybrid app design, providing intuitive experiences for global audiences.
I’m Heyjune, a culturally fluent, human-first designer known for building 0→1 products in fast-paced startup environments.

I specialize in mobile-first B2C and hybrid app design, providing intuitive experiences for global audiences.
My driving force is making everyday life a little more flavorful, something I discovered on stage. While performing in musical theatre, I first felt the power of emotional connection. That passion for empathy still lives in my work, just now through design.

I spent three years designing at UNICEF and the UN World Food Programme, to help children get online and receive proper school meals

Now, I’m the founding product designer at Musicow, where I lead for a global music investment platform, designing secure, intuitive experiences.

I’ve lived and worked in 🇰🇷 Korea, 🇫🇷 France, 🇲🇦 Morocco, and 🇺🇸 the U.S., and my biggest strength is building bridges between people, cultures, and ideas.

And yes, I will sing back “don’t make it bad” to your “Hey Jude.” Always.😉
© Heyjune Sim 2025
© Heyjune Sim 2025

© Heyjune Sim 2025

© Heyjune Sim 2025