hello this is yoi

hello this is yoi

hello this is yoi

I’m a product Designer with 6+ years of experience delivering high-impact solutions across Asia and Europe.

I bridge the gap between business goals and user needs, specializing in aligning design strategy with investor interests and cross-company partnerships.

Proven track record in scaling B2C products (from 800k to 1M users) by integrating market insights into intuitive interface design.

Skills

Skills

UX Design

UX Design

UX Design

UI Design

UI Design

UI Design

User-Centered Design

User-Centered Design

User-Centered Design

Design Systems Development

Design Systems Development

Design Systems Development

Design Thinking

Design Thinking

Design Thinking

Prototyping

Prototyping

Prototyping

Wireframe

Wireframe

Wireframe

Cross-Functional Collaboration

Cross-Functional Collaboration

Cross-Functional Collaboration

Interaction Design

Interaction Design

Interaction Design

Strategic Design

Strategic Design

Project Management

Project Management

Project Management

Experience

Experience

Experience

Freelance Product Designer

Freelance Product Designer

Freelance Product Designer

August 2024 – Present

August 2024 – Present

  • Leading UX strategy and conducting competitive research, and designing the website and apps from 0 to 1 for clients. 

  • Through my latest project work for Ceres International (Germany), I optimized market prioritization through research, shifting the strategic pivot from Europe and Taiwan to focus initially on Taiwan. Additionally, I created a few templates as a modular design to suit with CMS system as the basis, which reduced the time required for teamwork.

  • Recently, I collaborated with another company on a project that will be delivered to the bar market. Visualizing product vision through high-fidelity prototyping to support investment decisions.

Visual Experience Designer

Visual Experience Designer

Visual Experience Designer

Trend Micro

Trend Micro

Sep 2021 - Jul 2024

Sep 2021 - Jul 2024

A global leader in cybersecurity innovation, with a focus on AI and digital protection.

  • Worked across departments for B2C products, collaborating with global teams in the US, Canada, and Australia, by using GTM tracking to test and iterate visual QA to align with the international standard. 

  • Partnered with the marketing team on user feedback-based iterations to improve chatbot UX, which led to user growth from 800,000 to over 1 million.

  • Led the UI and visual design of ChainSafer’s marketing website from 0 to 1, building the brand system and web UX from scratch in close partnership with the content team to optimize the SEO.

  • Collaborated with the design team on design system reviews to ensure cross-platform consistency across mobile, web, and desktop products, maintaining the integrity of large-scale design systems.

UI/UX Designer

UI/UX Designer

UI/UX Designer

Rolo

Rolo

Rolo

Nov 2020 - Aug 2021

Nov 2020 - Aug 2021

Rolo is designed for secure communication in a B2B context, while adapting UX to accommodate both enterprise and privacy-conscious individual users.

  • Established a scalable design system in Figma, improving design-to-development efficiency and reducing feature build time by 50% — from four weeks to just two.

  • Mentored a junior designer, providing hands-on training in UI/UX principles, system thinking, which helped to optimize cross-functional collaboration with product and engineering teams.

  • Created and presented strategic prototypes to investors, effectively demonstrating product architecture and business value, which helped strengthen investor facilitation of decision-making.

  • Through contributions, I implemented a complete Design-to-dev workflow, improving system consistency and supporting a 10% increase in European user adoption during my tenure.

UI/UX Designer

UI/UX Designer

UI/UX Designer

HODWA

HODWA

HODWA

Jul 2019 - Jul 2020

Jul 2019 - Jul 2020

HODWA develops IoT-powered solutions for smart building control.

  • Led the end-to-end design for iOS, Android, and internal EIP systems, and established a cross-platform design system to ensure consistent user experience and improve development efficiency.

  • Designed and conducted two user surveys with the marketing team to understand user preferences and behaviors, refining the product based on those insights.

  • Developed design assessment questions and led designer interview sessions to evaluate and recruit design talent.

UI/UX Designer

UI/UX Designer

UI/UX Designer

JKOPay

JKOPay

JKOPay

Apr 2018 - Mar 2019

Apr 2018 - Mar 2019

JKOPay is a mobile payment solution widely used in Japan and Taiwan.

  • Redesigned the product UI and developed a scalable component library using Sketch and Zeplin to ensure visual consistency and reusable patterns across platforms.

  • Independently established and finalized the design style guide for Android, standardizing UI elements across the platform.

  • Collaborated closely with PMs and developers to align user flows and UX strategy using mobile mockups, ensuring a smooth and intuitive user experience.

  • Led the handoff and QA process by preparing redlines and spec documentation, streamlining communication with developers and reducing iteration time.

  • Increased user numbers by 20% following the UI redesign and feature updates.

UI/UX Designer

UI/UX Designer

UI/UX Designer

Gogolook

Gogolook

Gogolook

Sep 2016 - Mar 2018

Sep 2016 - Mar 2018

Whoscall, Gogolook’s caller ID app, is one of the top-rated products in Asia.

  • Designed product and social media illustrations using Adobe Photoshop and Illustrator.

Also created ad creatives, event materials, and exhibition visuals to maintain brand consistency across all touchpoints.

  • Managed visual design across multiple platforms, including websites and product interfaces, ensuring a cohesive and consistent brand identity.

  • Participated in user interviews in Brazil and Taiwan, and translated user insights into strategic design decisions that contributed to regional market growth.

Explore my work and see the impact!

Explore my work and see the impact!

Explore my work and see the impact!

Let’s create something great together!

Let’s create something great together!

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