User Testing
If you like applying User Testing, every challenge here gives you a chance to practice it on a real industry brief.
- CodeIntermediateNew
Build an Interactive Carbon-Emissions Explorer for a Climate Nonprofit
You receive 20 years of harmonized European industrial emissions data (around 800,000 rows: country, sector, sub-sector, year, emissions in tons CO2e). Design and build an inter…
- Interactive Visualization
- D3
- Observable
Data Visualization - DesignIntermediateNew
Build a Participatory Budgeting Decision Tool for a City Government
You will design and prototype a participatory budgeting tool for one neighborhood pilot with around 30 candidate projects and a fixed EUR 2 million budget. Residents vote on wei…
- Participatory Decision Making
- Decision Support Systems
- Portfolio Optimization
Decision Support Systems and Decision Analysis
How it works
From brief to credential, in six steps.
Step 01
Browse challenges aligned to your studies.
Step 02
Accept the one that fits your goals.
Step 03
Work through it with AI Copilot guidance.
Step 04
Submit for structured evaluation.
Step 05
Earn a verified credential.
Step 06
Add it to LinkedIn with one click.
Industry teams behind a decade of practitioner briefs
Hiring from this pool?
Sponsor a challenge and meet candidates through actual work.
Industry teams can shape briefs around the skills they hire for, then evaluate students on rubric-scored deliverables — not resumes.



















































































