← Back to jobsPosted (ATS) 2/25/2026, 2:21:33 AM Updated (ATS) 2/25/2026, 2:21:33 AM First seen by us 6/28/2026, 9:01:45 AM Last re-seen 8/22/2026, 10:30:15 PM Distinct job IDs 1 Open in parallel 1 Work locations 1 Cumulative days active 179 Stagnancy score 71.59 ATS job ID cb61f821-d8c4-4ec5-940d-3fd83be63a5f
GhostHigh-confidence zombie posting. HR is probably not actually hiring.
Senior Backend Engineer, LangSmith Deployments
LangChain · Engineering · San Francisco, CA
A posting in this role has sat open 179 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 Francisco, CA
- Posted (ATS)
- Feb 25, 2026
- Last confirmed open
- Aug 22, 2026
- Open for
- 179 days +
Data provenance
- Source platform
- ashby
- Latest listing found
- https://jobs.ashbyhq.com/langchain/cb61f821-d8c4-4ec5-940d-3fd83be63a5f
- Stream ID
- d5d64569-b7d0-4d34-8e21-6115dc1055c4