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©2019-2025 Je Hyun Kim
Based on User Research
The diagram above highlights my approach to user research methodology when designing a new UX and UI at Terra API.
Designing for Scale
To reach large enterprises, we needed more than a generic pitch—we needed to speak their language. Through sales calls, landing page analytics, and user behaviour patterns, I identified distinct enterprise personas and mapped their journey. This research shaped a focused landing page tailored to the needs, values, and decision-making criteria of companies with 10K+ employees - which I designed and coded end-to-end.
Enterprise Product Details
Enterprise Contact Page
Project topic:
Duration:
Skillset:
User research:
UI/UX design, User research, Software engineering
1-month
Figma, Javascript, Typescript, CSS
UX Persona, User journey map, Sales data analytics
Visualising Health Data
As demand for health scoring tools grew among our customers, we set out to build scores that could translate raw user data into meaningful insights—covering sleep, body stress, cardiovascular health, and workout readiness.
Data Visualisation Details
Customisation
Collaborating closely with data scientists and developers from brainstorming the concept to designing the UI/UX, I focused on how to visualise scores in a way that was both insightful and customisable. Through multiple rounds of prototype testing with real developer users, I refined the design—ultimately introducing a radar graph that balanced clarity with flexibility.
Project topic:
Duration:
Skillset:
User research:
UI/UX design, Human centred design, Data visualisation
3 weeks
Figma
User journey, User testing, Iterative prototyping
Onboarding with Clarity
The original onboarding experience for our developer dashboard created unnecessary friction—users struggled to set up their first workflow and often dropped off early. To streamline this journey, I partnered with the sales team to understand common blockers and redesigned the onboarding flow from the ground up.
Dashboard Onboarding
Understanding Userflow
Using data analytics tools, I studied customers’ behaviours, identified patterns of pain points, and mapped key flows. The result was a simplified, learnable onboarding experience that reduced cognitive load and helped developers get started with confidence.
Authentication Onboarding
Project topic:
Duration:
Skillset:
User research:
UX/UI design, Human Centred Design
1 month
Figma
Funnels, Page view, Engagement time, Session replays