UX & UI Designer | Shopify Developer

Tristan Koolhaas

With passion and proven design principles, I design and develop webshops that align with both customer needs and business.

Expertise

Design

High-end mobile and desktop designs with prototyping in Figma. Adobe CC, branding & graphic design.

Development

Over 15 years in IT and web design, with experience as a DevOps Engineer, skilled in Liquid, HTML, CSS and JavaScript.

Optimization

I optimize customer journeys by removing friction points through data-driven insights, e-commerce expertise, and CRO.

Full Service

Project management from start to finish, with experience in product management, marketing, and customer service.

Process

Understand

Every project starts with listening. I really want to get to know the brand, goals, and what the customers truly need.

Prototype

Ideas take shape through thoughtful wireframes and pixel-perfect prototypes that bring the experience to life.

Develop

Once the designs are clear, I turn it into reality with a custom, fast and high-performing Shopify build.

Test

I thoroughly test for bugs, mobile responsiveness, and usability to ensure everything works flawlessly for real users.

Launch

With everything refined and ready, your store goes live. Built to impress, perform, and grow with your brand.

“Every webshop I design is crafted with care and expertise. 
By blending passion with proven design principles, I help businesses turn ideas into digital experiences that truly work.”

Experience

My experience combines marketing, web design, UX/UI, and development, bringing together creative strategy and strong IT skills.

2013 – Present

Webdesigner

Self-taught from a young age, I evolved from crafting simple HTML and CSS sites to designing and developing dynamic, high-performing websites and stores with Webflow, Framer, and Shopify.

2017 – 2019

Webshop Marketeer & Customer Service

Developed hands-on e-commerce expertise at a designer lighting store, managing sales, customer care, and developing new webshop services.

2021 – 2023

DevOps Support Engineer

As a DevOps Support Engineer, I mastered my programming skills, built efficient support systems, and gained broad technical expertise across IT operations.

2023 – Present

UX/UI Designer & Shopify Developer

Started as a UX/UI Designer at a leading Amsterdam design agency before starting on my own, now specializing in Shopify development and creating refined, high-converting webshops.

Get in touch!

Searching for a skilled webshop designer who can combine functionality with great design? Feel free to reach out!

Let's get in touch!

Feel free to get in touch and explore how we can work together.