← Back to jobsPosted (ATS) 5/5/2026, 6:13:46 PM Updated (ATS) 8/21/2026, 8:08:02 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 109 Stagnancy score 60.9 ATS job ID 7872401
GhostHigh-confidence zombie posting. HR is probably not actually hiring.
Principal Model Optimization Engineer
Roblox · Software Engineering · San Mateo, CA, United States
A posting in this role has sat open 109 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)
- May 5, 2026
- Last confirmed open
- Aug 22, 2026
- Open for
- 109 days +
Data provenance
- Source platform
- greenhouse
- Latest listing found
- https://careers.roblox.com/jobs/7872401?gh_jid=7872401
- Stream ID
- 47d8a69b-8194-4887-ab8e-d08602f44edd