Certificate of completion
Mission 9: Build a Social Media API
Presented to
Ong Chuu Harn
For successfully completing and defending Mission 9, Build a Social Media API.
Skills mastered
AuthorisationAuthenticationSupabase (BaaS)Advanced Authentication & AuthorizationAdvanced API DesignAdvanced API FeaturesAdvanced SQL QueriesDatabase Design & OptimizationBackend Security
Verified by Sigmaschool on 8 October 2026
SIGMA-M9-7RG8Z68 October 2026
https://sigmo.dev/c-h-3b3018/certificates/m9
Ong Chuu Harn's Mission 9: Build a Social Media API certificate
This certificate was awarded to Ong Chuu Harn on 8 October 2026 for completing Mission 9, Build a Social Media API, at Sigmaschool.
What that means: “I can build an authenticated social media API with SQL relationships, issue and verify auth tokens, and enforce authorization rules on protected routes.”
Sigmaschool is a mastery-based programme where students build real, working software instead of watching lectures. Every mission is shipped to a live URL, walked through on video, and marked by a human instructor before it counts, so a certificate here means the work was seen and defended, not just finished.
