Jinsu Kim
Product Designer / Berlin
I’m a product designer based in Berlin with 5+ years of experience designing fast-growing B2B SaaS products.
I specialize in designing complex, zero-to-one initiatives at fast-paced startups, and always designing with measurable impact in mind. My focus isn’t just on adding features, but on solving the right problems and proving outcomes with data.
Now, I’m shaping the next five years of my career around a core question: “If there were no limits to my skills, what problems would I be most passionate about solving?” That question is guiding how I learn, what I build, and which challenges I take on next.
Mar 2025 ~ current
Product Designer, Rey, Berlin (Work Study)
Joined Rey to help make software that anyone can shape like paper. It’s the first step in a new chapter of my product design career.
Jun 2023 - Apr 2024
Product Designer, Bosalpim, Seoul
Designed the paid plan onboarding experience, which increased the paid plan conversion rate by 6x.
Improved the top funnel using A/B test data as design insights, which achieved 202% average MAU growth.
Identified business problems through weekly in-depth interviews with customers in their 50s and 60s.
Oct 2022 - Jun 2023
Product Designer, Karrot, Seoul
Designed and participated in the initial launch of a B2B SaaS product, which connects local small businesses and public institutions with 18 million monthly active users.
Apr 2021 - Oct 2022
Product Lead, MyMusicSheet, Seoul
Took full ownership of the product design and management of the online music sheet B2B2C platform.
Led the setup of the Artist Center, which achieved various major product indices, such as a 35% increase in new postings.
May 2020 - Apr 2021
Product Designer, flex, Seoul
Designed HR B2B SaaS platform with an understanding of the business growth stage and legal aspects, which supported teams growing from seed to B-round.
Took full ownership of the design system, utilized across various contexts within the HR B2B SaaS platform.
Jul 2019 - May 2020
Product Designer, kokomu, Seoul
Joined as an early member at the POC stage and worked as a full-stack designer, from design to front-end development.
Led the music sheet search project, fixing the funnel friction point, resulting in a monthly net revenue increase of 300 times within six months.
Feb 2025 ~ current
CODE University of Applied Sciences
B.A Digital Design & Innovation, AI Specialization
“If there were no limits to my skills, what problems would I be passionate about solving?”
With five years in B2B product design, I joined CODE University in Berlin to explore that question—and reinvent how I build products.