Design-to-Code Portfolio

Sebastian Weber

👋 Hi, I'm Sebastian, a UX/UI Designer from Cologne, Germany. I develop interfaces based on user research and bring them to life with AI, from Figma to finished code.
I work

GA4 Behavioral Segmentation of Google Merchandise Store Users
Case Study

GA4 Behavioral Segmentation of Google Merchandise Store Users

270,154 Google Merchandise Store users clustered into four behavioral segments via k-means. From BigQuery SQL through Python to an interactive dashboard.

270k Users
4 Segments
86% Checkout Drop-off
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Human Review of an AI-Generated Redesign Case Study
Case Study

Human Review of an AI-Generated Redesign

Figma Make rebuilt a responsive navbar from six screenshots. The review surfaced two failure modes: missing input and unverified output.

5 Findings
2 WCAG Violations
0 Unsolvable Issues for a UX Designer
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Preset Template Selection Tool Case Study
Case Study

A Preset Model for Updating Layouts

How curating presets instead of adding more options became the real design move, and how transparency builds trust.

"Will be super helpful for all situations."
Anonymous stakeholder
4 Iterations
3 Presets
0 Ambiguity
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Nebenkostenabrechnung Case Study
Case Study

A Full Day of Work, Replaced by AI and Excel

An in-context interview with no discussion guide. Three UX decisions. And why a Figma prototype wasn't the right answer.

"Yeah sure, but it's headed in a good direction."
Anonymous landlord · WhatsApp · May 1, 2026
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Nebenkostenabrechnung Workflow
AI Workflow

Utility Bill Statements, by Prompt

How a single prompt replaces an hour of work. Google Drive, Claude MCP, fully automated PDF generation.

3 prompts. 1 PDF.

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LinkedIn Profile Readiness Guide Case Study
Case Study

From Orientation Problem to Interactive Tool

How a navigation problem became an interactive browser tool. No framework, no design tool, no team.

Taking a concept, improving it, and turning learning into something useful for others. These are the qualities hiring managers are often looking for.
Olga Lavrenko · Career Coach, neuefische
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LinkedIn Profile Readiness Guide Tool
Tool

Where Does Your LinkedIn Profile Stand?

An interactive checklist for your LinkedIn profile. With live progress visualization, right in the browser, no login required.

2 Days to Build
5 Iterations
0 Dev Handoffs
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