Karsten Lenz - UX Designer & Web Developer

Q: Where is Karsten based?

Karsten is based in Hamburg, Germany .

Q: What languages does Karsten speak?

Karsten speaks the following languages: German (Native), English (Advanced), Spanish (Elementary), French (Elementary), Russian (Elementary), Chinese (Elementary) .

Q: How many years of experience does Karsten have?

Karsten has at least 15 years of experience. During this time, Karsten has worked in at least 14 different roles and for 11 different companies . The average length of individual experience is 1 year and 1 month . Note that Karsten may not have shared all experience and actually has more experience.

Q: What is Karsten's latest experience?

Karsten's most recent position is UX Designer & Web Developer at Freelance .

Q: What companies has Karsten worked for in recent years?

In recent years, Karsten has worked for Freelance , uxHH - User Experience Hamburg , and Computer Science 101 .

Q: Which industries is Karsten most experienced in?

Karsten is most experienced in industries like Media and Entertainment , Information Technology , and Advertising . Karsten also has some experience in Education .

Q: Which business areas is Karsten most experienced in?

Karsten is most experienced in business areas like Product Development , Information Technology , and Marketing . Karsten also has some experience in Project Management , Quality Assurance , and Business Intelligence .

Q: Which industries has Karsten worked in recently?

Karsten has recently worked in industries like Information Technology and Education .

Q: Which business areas has Karsten worked in recently?

Karsten has recently worked in business areas like Marketing , Information Technology , and Product Development .

Recommended expert

Hamburg, Germany

Experience

Feb 2026 - Present

2 months

UX Designer & Web Developer

Freelance

Mar 2023 - Present

3 years 1 month

Organizer and Host for UX Roundtable HH and World Usability Day HH

uxHH - User Experience Hamburg

Jan 2022 - Dec 2022

1 year

Senior Frontend Developer / UX Designer

Computer Science 101

Jan 2021 - Dec 2021

1 year

Frontend Developer / UX Designer

Computer Science 101

Jul 2020 - Jan 2021

7 months

Trainee Web Development

neuefische GmbH - School and Pool for Digital Talent

Full-time coding bootcamp totalling over 540 hours of programming.
Development of a web app as capstone project.
Tools and Technologies covered by the bootcamp:
HTML5
CSS3
JavaScript ES2020
React
Storybook
Styled Components
Cypress
Jest
Node.js
Express
MongoDB
mongoose
npm
Git

Mar 2017 - Sep 2020

3 years 7 months

Senior UX Designer

Medienwerft Agentur für digitale Medien und Kommunikation GmbH

Aug 2015 - Feb 2017

1 year 7 months

UX Designer

Medienwerft Agentur für digitale Medien und Kommunikation GmbH

Oct 2014 - Feb 2015

5 months

Freelance QA Testing

LAI Global Game Services

Aug 2012 - Aug 2014

2 years 1 month

Game Producer

Farbflut Entertainment GmbH

Project management for the successful free-to-play browser games [link] [link] and [link]
Communicator, organizer
Getting things done, keeping people happy
A healthy dose of UX design, game balancing and guerilla marketing

Jan 2012 - Aug 2012

8 months

Conversion Manager

Goodgame Studios

Optimizing marketing efforts to better convert traffic into online game signups
Setting up A/B tests for landing pages, screenshots and banner ads
Monitoring and analysing tracking data from various marketing and in-game sources
Preparing data for other departments

Apr 2010 - Aug 2010

5 months

User Experience Design Intern

SinnerSchrader

Developing concepts for website user interfaces
Creating wireframes, flow charts, site maps and concept documents
Conveying these concepts to clients in telephone conferences

Feb 2009 - Jan 2010

1 year

Senior QA Tester

dtp young entertainment GmbH & Co. KG

Lead testing for 10 shipped Nintendo DS titles published by dtp young entertainment, managing up to 5 projects at the same time
Coordinating in-house and external test teams for functionality and German localization testing

Jun 2008 - Jan 2009

8 months

QA Game Tester

dtp young entertainment GmbH & Co. KG

Localization and functionality testing for PC, NDS and Wii

Jul 2007 - Sep 2007

3 months

Intern

MTV Game One

Recording and pre-compiling video game footage for the show
Various tasks during shooting in the studio and on location
Attending the editors' meetings
Preparing ideas and treatments for the show

Industry Experience

See where this freelancer has spent most of their professional time.

Experienced in Media and Entertainment, Information Technology, Advertising, and Education.

Media and Entertainment

Information Technology

Advertising

Education

Business Area Experience

See which departments and functions this freelancer has contributed to most.

Experienced in Product Development, Information Technology, Marketing, Project Management, Quality Assurance, and Business Intelligence.

Product Development

Information Technology

Marketing

Project Management

Quality Assurance

Business Intelligence

Skills

Web Development
Artificial Intelligence (Ai)
Ux Management

Languages

German

Native

English

Advanced

Spanish

Elementary

French

Elementary

Russian

Elementary

...and 1 more

Education

Oct 2014 - Jun 2015

Beijing Normal University

Chinese Language · Beijing, China

Oct 2010 - Jun 2011

Goldsmiths College, U. of London

Master of Arts, Digital Media · Digital Media · London, United Kingdom

Oct 2005 - Jun 2008

Universität Hamburg / University of Hamburg

Bachelor of Arts, Media and Communication Studies · Media and Communication Studies · Hamburg, Germany

Certifications & licenses

Certified Professional For User Experience - Essentials In UX And HCD Management (CPUX-M)

CPUX Foundation Level

HSK Chinese Proficency Test Level 2

Statistics

Experience

Total positions 14

Experience in Media and Entertainment 9 y

Avg length 1 y 1 m

Longest experience 3 y 6 m

Expertise

Recent roles UX Designer & Web Developer, Organizer and Host for UX Roundtable HH and World Usability Day HH, Senior Frontend Developer / UX Designer

Main industries Media and Entertainment, Information Technology, Advertising

Main business areas Product Development, Information Technology, Marketing

Qualifications

Highest degree Master

Certifications earned 3

Profile

Created

February 2026

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Karsten based?

Karsten is based in Hamburg, Germany.

What languages does Karsten speak?

Karsten speaks the following languages: German (Native), English (Advanced), Spanish (Elementary), French (Elementary), Russian (Elementary), Chinese (Elementary).

How many years of experience does Karsten have?

Karsten has at least 15 years of experience. During this time, Karsten has worked in at least 14 different roles and for 11 different companies. The average length of individual experience is 1 year and 1 month. Note that Karsten may not have shared all experience and actually has more experience.

What roles would Karsten be best suited for?

Based on recent experience, Karsten would be well-suited for roles such as: UX Designer & Web Developer, Organizer and Host for UX Roundtable HH and World Usability Day HH, Senior Frontend Developer / UX Designer.

What is Karsten's latest experience?

Karsten's most recent position is UX Designer & Web Developer at Freelance.

What companies has Karsten worked for in recent years?

In recent years, Karsten has worked for Freelance, uxHH - User Experience Hamburg, and Computer Science 101.

Which industries is Karsten most experienced in?

Karsten is most experienced in industries like Media and Entertainment, Information Technology, and Advertising. Karsten also has some experience in Education.

Which business areas is Karsten most experienced in?

Karsten is most experienced in business areas like Product Development, Information Technology, and Marketing. Karsten also has some experience in Project Management, Quality Assurance, and Business Intelligence.

Which industries has Karsten worked in recently?

Karsten has recently worked in industries like Information Technology and Education.

Which business areas has Karsten worked in recently?

Karsten has recently worked in business areas like Marketing, Information Technology, and Product Development.

What is Karsten's education?

Karsten holds a Master in Digital Media from Goldsmiths College, U. of London, a Bachelor in Chinese Language from Beijing Normal University and a Bachelor in Media and Communication Studies from Universität Hamburg / University of Hamburg.

Does Karsten have any certificates?

Karsten has 3 certificates. These include: Certified Professional For User Experience - Essentials In UX And HCD Management (CPUX-M), CPUX Foundation Level, and HSK Chinese Proficency Test Level 2.

What is the availability of Karsten?

Karsten is immediately available for suitable projects.

What is the rate of Karsten?

Karsten's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.