John Cartman Rocks

UI/UX Designer
based in Frankfurt

I specialize in weaving digital elegance to bring your online world to life with creativity.

Nothing is fixed, everything is editable.

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John Cartman Rocks

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Pride & Joy

Discover a collection of projects that reflect my skills and dedication. Take a look at what I've built.

Project image for Mobile App Onboarding Flow Optimization for Increased User Retention

Mobile App Onboarding Flow Optimization for Increased User Retention

Designed and prototyped a streamlined onboarding flow for a mobile application, focusing on reducing friction and improving first-time user experience. Increased user retention by 25% within the first month.

Figma
Project image for Astrov: Template for Astro Framework, Simple, Fast and Clean

Astrov: Template for Astro Framework, Simple, Fast and Clean

A high-performance, fully responsive theme built with Astro v5.3 and TailwindCSS v4, featuring a sleek dark design, customizable components, and all essential pages.

Astro
Tailwind
Project image for Responsive Web Component Library for Consistent UI Across Platforms

Responsive Web Component Library for Consistent UI Across Platforms

Developed a reusable component library ensuring consistent UI across web and mobile platforms. Focused on accessibility and performance, resulting in a 40% reduction in development time.

Storybook
Figma
Project image for E-commerce Checkout Experience Enhancement with User-Centered Design

E-commerce Checkout Experience Enhancement with User-Centered Design

Conducted user research and redesigned the e-commerce checkout process, focusing on reducing cart abandonment. Resulted in a 20% increase in successful transactions and improved customer satisfaction.

Storybook
Figma
Project image for Astrosas: Launch Your SaaS with Performance & Style

Astrosas: Launch Your SaaS with Performance & Style

Built on Astro, TailwindCSS, and React, Astrosas offers a blazing-fast, SEO-optimized SaaS template with a stunning dark design, feature-rich components (search, blog, forms), and effortless customization.

Astro
Tailwind
Project image for Interactive Data Visualization Tool for Complex Financial Data Analysis

Interactive Data Visualization Tool for Complex Financial Data Analysis

Designed an interactive data visualization tool, enabling users to analyze complex financial data with intuitive charts and graphs. Improved data comprehension and decision-making for analysts.

Sketch
InVision
Project image for Design System Implementation for Cross-Platform Application Consistency

Design System Implementation for Cross-Platform Application Consistency

Developed and implemented a comprehensive design system, ensuring consistent UI across web and mobile applications. Reduced design debt and improved collaboration between teams.

Atomic Design
Style Guides
Project image for User Interface Prototyping and Iteration for New Feature Development

User Interface Prototyping and Iteration for New Feature Development

Created high-fidelity prototypes for new feature development, conducting user testing and iterating based on feedback. Resulted in a more user-friendly and successful feature launch.

Prototyping
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Me & Myself

Get to know me, from myself and what others say about myself and my work.

Hands juggling colorful balls

Master of the Unexpected Toss

Juggling isn't just about keeping things in the air; it's about rhythm, focus, and embracing the occasional delightful chaos. It's a playful way to challenge myself and bring a smile to others.

A person riding a bicycle through a city street

Urban Explorer on Two Wheels

There's a unique thrill in navigating cityscapes on my trusty bicycle. Each ride is a new adventure, uncovering hidden gems and feeling the pulse of the urban environment.

A cute fluffy cat looking at the camera

Whispers from the Wildlife

Animals have a special place in my heart. Whether it's the playful antics of a cat or the loyal gaze of a dog, their presence brings a sense of calm and wonder to my day.

Gym equipment with weights

Fueling the Mind and Body

The gym is my sanctuary for both physical and mental well-being. Pushing my limits and feeling the strength build is incredibly rewarding, complementing the more sedentary aspects of design.

Sarah M.

"Understood our needs perfectly and delivered fantastic results. Highly recommend!"

David K.

"A true professional. Great communication and top-notch skills. Will definitely collaborate again."

Emily L.

"Impressed by the quality and efficiency. Made the whole process smooth and enjoyable."

Tools & Tricks

See how I bring ideas to life through design. From strategy to visuals, here's what I do best.

Design & Flow

I create intuitive layouts, smooth flows, and visuals that serve both function and feel. Every detail is considered to ensure seamless experiences across all screens.

Prototype & Test

I turn ideas into interactive prototypes to validate direction and usability. Real feedback shapes the final experience — less guesswork, more clarity.

Brand & Tone

From moodboards to logo systems, I craft visual identities that align with your voice. It's design that feels like you, at a glance.

Handoff & Ready

My design files are clean, annotated, and ready for handoff. Specs, assets, and flows are all built with collaboration in mind.

Motion & Feel

I use motion to add clarity, feedback, and delight. Every animation is purposeful, subtle, and helps make the experience more human.

Ready to bring your vision to life?

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48h

Fast Delivery

10+

Years of Experience

16

Happy Clients

Ink & Code

Dive into articles that inspire, inform, and ignite curiosity. Explore my latest posts below!

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