← Back to jobsPosted (ATS) 2/26/2026, 9:41:27 PM Updated (ATS) 8/17/2026, 5:30:38 PM First seen by us 7/2/2026, 7:01:46 AM Last re-seen 8/22/2026, 2:15:19 PM Distinct job IDs 1 Open in parallel 1 Work locations 1 Cumulative days active 177 Stagnancy score 71.29 ATS job ID 7655346
GhostHigh-confidence zombie posting. HR is probably not actually hiring.
Principal/Senior Machine Learning Scientist - Search and Discovery
Roblox · Machine Learning · San Mateo, CA, United States
A posting in this role has sat open 177 days — well past the 90-day mark where an opening reads as a resume black hole rather than an active search.
Rotation timeline
Every ATS job ID we've matched to this same normalized title, oldest first. "Posted" is the date the ATS reports; "last confirmed open" is the last time we saw it live.
- Location
- San Mateo, CA, United States
- Posted (ATS)
- Feb 26, 2026
- Last confirmed open
- Aug 22, 2026
- Open for
- 177 days +
Data provenance
- Source platform
- greenhouse
- Latest listing found
- https://careers.roblox.com/jobs/7655346?gh_jid=7655346
- Stream ID
- 10cb747a-ced1-433b-9910-2cd8759fafb5