📜 docs: add job posting for backend engineer position to README

Author: tyler-dane

README.md

@@ -69,3 +69,6 @@ To skip the waitlist, enter `marco@polo.co` when prompted for an email at the lo
 🎬 [Compass on YouTube](https://youtube.com/playlist?list=PLPQAVocXPdjmYaPM9MXzplcwgoXZ_yPiJ&si=jssXj_g9kln8Iz_w)
 
 ✍ [Compass Blog](https://www.compasscalendar.com/post/compass-is-open-source)
+
+🤝 [Backend Engineer Job Description](https://alpaca-ty.notion.site/Senior-Backend-Engineer-Part-time-Open-source-1f9237bde8f480658f93ea33e6e55481?pvs=4)
+(We're hiring!)