I am an interaction designer, web developer, interested in designing systems, user-centric products and design thinking. On my journey, I’ve been designing for two #EstonianMafia startups. Here's my portfolio, _Website not available. Sign in: https://www.twine.net/signup_…

Karl Simmer

PRO

I am an interaction designer, web developer, interested in designing systems, user-centric products and design thinking. On my journey, I’ve been designing for two #EstonianMafia startups. Here's my portfolio, _Website not available. Sign in: https://www.twine.net/signup_…

Available to hire

I am an interaction designer, web developer, interested in designing systems, user-centric products and design thinking. On my journey, I’ve been designing for two #EstonianMafia startups.

Here’s my portfolio, Website not available. Sign in: https://www.twine.net/signup

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Skills

Experience Level

Work Experience

Senior Product Designer at Yolo Group
January 1, 2024 - November 6, 2025
Build and maintain design tokens in the design system infrastructure; contribute to enabling code automation between design tools and technologies; create a central component and template library used by multiple products; build Figma plugins to improve workflows; write documentation for design system usage; develop a web application for the design system; drive design system usage through advocacy, collaboration and workshops; design ops across the organization.
Lead Product Designer at Fudy
January 1, 2024 - January 1, 2024
Led product design for a QR-ordering platform used in restaurants, bars and event venues. Built and maintained a reusable component library, laying the foundation for a scalable design system. Enabled white-label product scaling through implementing Figma variables and theming. Redesigned the customer-facing web app using components and variables. Created staff-facing web app to expand internal product functionality.
Product Designer & Web Developer at Self-employed
January 1, 2023 - January 1, 2023
Contributed to three DeFi products (Nostra, WenWIn, Raft) as a product design contractor. Developed a custom WordPress site for Freya Food bar. Created landing page and brand assets for Motiveer using Midjourney’s Nijii 5 model. Created layout and lending application workflows for Fiizy.
Designer at Fiizy
January 1, 2022 - January 1, 2022
Prototyped a Buy Now, Pay Later product. Worked on lending application flows, based on user data and conversion metrics. Created landing pages for lending products tailored to regional needs. Designed and coded HTML email templates and banners for localized campaigns.

Education

Web design at Estonian Academy of Arts
January 1, 2018 - January 1, 2019
Master of Science at Tallinn University of Technology
January 1, 2016 - January 1, 2018
Bachelor of Science at Tallinn University of Technology
January 1, 2013 - January 1, 2016
Media at Tallinn Art Gymnasium
January 1, 2010 - January 1, 2011

Qualifications

Evaluating User Experience
January 11, 2030 - November 6, 2025
User-Centered Interaction Design
January 11, 2030 - November 6, 2025

Industry Experience

Software & Internet, Media & Entertainment, Professional Services, Education, Other

Skills

Experience Level