About

"The larger and more challenging the project, the more I thrive."

"The larger and more challenging the project, the more I thrive."

About

Design Leadership at scale

With 19 years of experience in digital design, I lead design and development teams and guide stakeholders through successful design transformations, always balancing user needs with business goals, especially in complex enterprise environments. The larger and more challenging the project, the more I thrive.


Inspiring teams to do their best work and creating an environment where they feel truly motivated is one of my core strengths. I’ve built and led multiple teams that consistently deliver high quality results, and fostering that kind of environment is what drives me most.


Given my extensive experience with Fortune 500 companies and other well known brands, particularly on large scale redesigns for platforms serving millions of users, I seek out ambitious, high impact clients that align with my expertise and values.

Design that works

I’m passionate about creating smart, user friendly experiences that solve real problems and drive business success. To me, great design isn’t just about aesthetics, it’s about impact. It engages users, delivers measurable results, and supports strategic goals. Striking that balance is what I do best, and it is what sets me apart as a designer.

Design Leadership at scale

With 19 years of experience in digital design, I lead design and development teams and guide stakeholders through successful design transformations, always balancing user needs with business goals, especially in complex enterprise environments. The larger and more challenging the project, the more I thrive.


Inspiring teams to do their best work and creating an environment where they feel truly motivated is one of my core strengths. I’ve built and led multiple teams that consistently deliver high quality results, and fostering that kind of environment is what drives me most.


Given my extensive experience with Fortune 500 companies and other well known brands, particularly on large scale redesigns for platforms serving millions of users, I seek out ambitious, high impact clients that align with my expertise and values.

Design that works

I’m passionate about creating smart, user friendly experiences that solve real problems and drive business success. To me, great design isn’t just about aesthetics, it’s about impact. It engages users, delivers measurable results, and supports strategic goals. Striking that balance is what I do best, and it is what sets me apart as a designer.

Design Leadership at scale

With 19 years of experience in digital design, I lead design and development teams and guide stakeholders through successful design transformations, always balancing user needs with business goals, especially in complex enterprise environments. The larger and more challenging the project, the more I thrive.


Inspiring teams to do their best work and creating an environment where they feel truly motivated is one of my core strengths. I’ve built and led multiple teams that consistently deliver high quality results, and fostering that kind of environment is what drives me most.


Given my extensive experience with Fortune 500 companies and other well known brands, particularly on large scale redesigns for platforms serving millions of users, I seek out ambitious, high impact clients that align with my expertise and values.

Design that works

I’m passionate about creating smart, user friendly experiences that solve real problems and drive business success. To me, great design isn’t just about aesthetics, it’s about impact. It engages users, delivers measurable results, and supports strategic goals. Striking that balance is what I do best, and it is what sets me apart as a designer.

Freelance

Freelance

Fortune 500 / Enterprise corporations

Booking.com

Booking.com

Designed and experiment tested cross-platform wishlist features with tens of millions of daily visitors, for the world's leader in online travel.

SiriusXM

SiriusXM

Hired by DNA.inc

Led a team of four designers from Spain and the Netherlands and collaborated with New York teams to redesign the website of one of the biggest U.S. audio platforms with over 140 million annual visits, resulting in a 4.3% increase in sales rate after launch.

Vodafone

Vodafone

Designed a brand new consumer IoT smartphone app to transform your home into a smart home, for a well-known Fortune 500 company.

Zalando

Zalando

Redesigned of a smartphone app and desktop web app for in-house startup Collabary, part of a world-famous e-commerce enterprise.

T-Mobile

T-Mobile

Designed a new sales funnel for purchasing a fixed telecom package for home use, designed for one of the largest mobile communications companies worldwide.

Large enterprises

EVBox

EVBox

Led the redesign of EVBox.com, driving a 15% boost in conversion for a global company with over 550,000 EV chargers.

Greenchoice

Greenchoice

Hired by Qikker Online

Redesign of an energy consumption and generation insight app for the largest sustainable energy provider in the Netherlands.

EuroParcs

EuroParcs

Hired by Fabrique

Royal FloraHolland

Royal FloraHolland

Hired by Vandejong

DLL

DLL

Heijmans

Heijmans

Azbuka Vkusa

Azbuka Vkusa

Hired by IceMobile

Startups and scale-ups

Hegg Energy

Hegg Energy

Restocks

Restocks

Anytime

Anytime

Hired by Fabrique

Grutto

Grutto

Aion

Aion

Hired by TBWA/X

Braingineers

Braingineers

Boldking

Boldking

Verdify

Verdify

Public institutions

University of Amsterdam

University of Amsterdam

Led two teams to redesign the website of the largest university in the Netherlands - a 200,000-page giant - with a new modular grid and design system.

Gemeente Amsterdam

Gemeente Amsterdam

Amsterdam Smart City

Amsterdam Smart City

Eye Filmmuseum

Eye Filmmuseum

Chamber of Commerce

Chamber of Commerce

Fulltime

Generous

Generous

Senior Product & UX/UI Designer

Fabrique

Fabrique

Visual / UX Designer

Studio Jan Koek

Studio Jan Koek

Co-founded & Creative Director

Startups I co-founded

Appeteaser

Appeteaser

Get real user feedback on your Figma / Bolt / Lovable prototype.

Fluently

Fluently

Online distraction-free editor with a multilingual translator, grammar checker, and synonyms library built-in.

Very Disco

Very Disco

Everything ever mentioned on your favourite podcasts.

My Queue

My Queue

Create a playlist of written articles.

CaseChat

CaseChat

Everything ever mentioned on your favourite podcasts.

The Master Workshop

The Master Workshop

Master workshops by inspiring speakers teaching about creating digital products.

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© Sander Crombach 2025

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© Sander Crombach 2025

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© Sander Crombach 2025

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© Sander Crombach 2025

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Get in touch

Get in touch