Challenges
Ship work companies actually need.
Every challenge is a live business problem. Winning submissions earn cash, a verified badge, and a direct line to the hiring team.
Showing 6 of 6 challenges
Northwind Pay
Product
Optimize a real checkout funnel for 12% higher conversion
Analyze anonymized checkout data and propose a redesigned flow. Winning submissions ship to production.
Loopstack
Data
Build a churn prediction model on 90 days of SaaS data
Deliver a reproducible notebook plus a short memo on top drivers of churn and recommended interventions.
Halo Finance
Design
Design a brand identity for a Gen-Z investing app
Full identity system: logo, type, color, and three key app screens. Present as a Figma deck.
Peppr
Marketing
Audit our onboarding and propose one growth loop
Use our live product for one week. Deliver a Loom walkthrough and a single, testable growth loop.
Draftlane
Engineering
Ship a realtime multi-cursor prototype in 72 hours
Use any stack. We evaluate on latency, conflict handling, and code clarity. Bonus for offline support.
Tessera Health
Engineering
Full WCAG 2.2 audit of our marketing site
Automated + manual audit. Deliver a prioritized report with code-level fixes for the top 10 issues.