Karsten

Hey! I'm Karsten – Frontend DeveloperJavaScriptand consultant with over 18 years of experience. I'm an expert in HeadlessShopifyand everything related to web technologies.

Also, as a CSS nerd, I foundedCSS Todayand want to revolutionize the coding industry withDevpilot.

Experiences

Milovision

Milovision Health

Next.js, React, REST-API, Supabase

2025 - Now

Milovision Health is a creative agency for pharmaceutical and healthcare marketing. I work there for one of the largest German pharmaceutical companies, developing innovative digital solutions for global campaigns and healthcare experiences.

Hunter

Hunter

Shopify Headless, Hydrogen, React, Mixpanel

2024 - Now

Hunter is a family business from Bielefeld, founded in 1980. They produce high-quality accessories for dogs and cats, mostly manufactured in Germany. With around 170 employees, they combine tradition and innovation.

UP Designstudio

UP Designstudio GmbH

Next.js, Contentful und Shopify Headless

2024

UP Designstudio is a creative design agency that develops innovative digital and physical products for companies committed to creating a livable future. I developed a modern web solution using Next.js and Shopify Headless for a healthcare company.

Rummel Matratzen

Rummel Mattresses

Shopify Headless

2024

Rummel Matratzen is a family-owned company from Bavaria that has been manufacturing high-quality and innovative mattresses since 1948. I developed a custom Shopify Headless solution for digital sales.

Uni Hohenheim

University of Hohenheim

Consulting, Style Guides

2023

The University of Hohenheim is a leading university in agricultural sciences, natural sciences, and economics and social sciences. I was involved in developing the concept for digital learning platforms.

Telekom

Telekom AG

JavaScript, UX

2012

Telekom is Germany's leading telecommunications provider offering services from mobile to internet to TV and business solutions. I developed frontend solutions with a focus on performance optimization and accessibility.

Bundesadler

Federal Republic of Germany

Consulting, Learning Platforms

2009

The Federal Republic of Germany continuously modernizes its digital infrastructure for citizen services and administration. I implemented an information platform.

Testimonials

Working with Karsten was perfect - fast, good, reliable. I think we'll work together more often!

Lasse Creutzfeldt

Lasse Creutzfeldt

UP Designstudio GmbH

Karsten helped us very competently in our time of need and was quick with finding solutions and implementation. We are now planning the next projects together. Highly recommended.

Heidi Winkler

Heidi Winkler

fraukauf.de

His timely work and outstanding professionalism have left a positive impression. We look forward to implementing future projects with him as well.

Markus Schuster

Markus Schuster

Telekom AG