← Back to jobsPosted (ATS) 2/19/2025, 1:34:44 AM Updated (ATS) 2/19/2025, 1:34:44 AM First seen by us 6/28/2026, 9:01:43 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 550 Stagnancy score 100 ATS job ID a03b3e54-495d-4960-aee7-0194a3cef57d
GhostHigh-confidence zombie posting. HR is probably not actually hiring.
Senior Fullstack Engineer, AI Observability & Evals Platform
LangChain · Engineering · San Francisco, CA
A posting in this role has sat open 550 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 19, 2025
- Last confirmed open
- Aug 22, 2026
- Open for
- 550 days +
Data provenance
- Source platform
- ashby
- Latest listing found
- https://jobs.ashbyhq.com/langchain/a03b3e54-495d-4960-aee7-0194a3cef57d
- Stream ID
- 3599e26b-ce2a-4363-ab6e-b3741b776769