Jinsu Kim
Product designer based in Berlin, Germany
I specialize in leading end-to-end initiatives at fast-paced startups. My focus isn’t just pixel-polishing, but identifying the right problems through measurable signals and validating outcomes with real data.
After five years in the field, I’m now shaping the next five around a driving question:
That mindset shapes how I learn from users, define challenges, and build solutions — without hand-offs.
Mar 2025 - Present
Product Designer, Rey, Berlin (Work study)
Help people build and publish mobile apps as intuitively as snapping Lego bricks together.
Work closely with customers to bridge the gap between their expectations and the product.
Aim to ship improvements right after receiving customer feedback.
Jun 2023 - Mar 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 - Jun 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 - Present
CODE University of Applied Sciences, Berlin, Germany
Bachelor of Arts - Digital Design & Innovation
Feb 2019 - Mar 2023
Hongik University, Sejong, Republic of Korea (Did not graduate)
Bachelor of Arts - Digital Media Design
Skills
Product Design, Framer, Figma. HTML/CSS, SQL, React JS(Basic)
Contact
Last update ・ Jul 2025