Clean and minimal design for a landing page
Design for a backup machine website contest
A landing page for a personal trainer
Concept for a health care platform
ecommerce contest
Hospital homepage
Hospital Design
The Translation Company
VoiceofTV conest entry
Design for webshop in automotive parts
Design a homepage for a gamers social network website. Will work 1 on 1 on two more pages.


I’m a Dutch UI/UX Designer. Combining User Interface Design and User Experience Design to help your company grow, while establishing a strong online presence.

Country: Netherlands. Member since: December 12, 2012
Contests won
Runner up
1-to-1 Projects
Repeat clients
Brand guide
Top Level




"Professional designer, understand your needs very well, responds fast to feedback. You can start without doubt 1-on-1 projects with Hein."
Anonymous client reviewed over 3 years ago
"Hein is a talented and thoughtful designer. He quickly understood our vision and took it to another level."
Profile picturejpatcourtney reviewed almost 4 years ago
"Happy to have worked with Hein Maas! He is a definitely professional designer: all the time he provided me with creative idea's and suggestions, examples of best practices, smart solutions. He delivered his updates always on time. Very polite person an..."
Profile picturediana.kotchieva reviewed almost 6 years ago
"One of the best designers we have found so far on 99designs!! Hein is a great designer, very responsive and detail-oriented. We will certainly look for him for more projects in the future."
Anonymous client reviewed over 6 years ago
"Very professional. Not just a designer but also an expert in UX and UI. He gives very good comments and suggestions."
Profile pictureRicky Heijnen reviewed over 7 years ago
"Great designer. We had a contest for a webpage design and his entries stood out from the rest from the very beginning. Went above and beyond to make sure we were satisfied with the end result even after the contest was over. Very professional and respon..."
Profile picturedwwwwww reviewed over 7 years ago