Certificate of completion
Presented to
Joshua Anthony Christian
For successfully completing and defending Mission 1, Build Your Developer Portfolio Page.
Skills mastered
Verified by Sigmaschool on 10 August 2026
https://sigmo.dev/jac-stocks-337673/certificates/m1
This certificate was awarded to Joshua Anthony Christian on 10 August 2026 for completing Mission 1, Build Your Developer Portfolio Page, at Sigmaschool.
What that means: “I can build a personal portfolio page with HTML and CSS, add a JavaScript greeting, and explain every line of it.”
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.
