Fresh

Senior Backend Software Engineer, AI Observability & Evals Platform (LangSmith)

LangChain · Engineering · Boston, MA

Within normal posting window. For now.

Posted (ATS)

9/12/2026, 7:00:25 AM

Updated (ATS)

9/12/2026, 7:00:25 AM

First seen by us

9/12/2026, 9:15:27 AM

Last re-seen

10/18/2026, 10:00:46 PM

Distinct job IDs

Open in parallel

Work locations

Cumulative days active

Stagnancy score

ATS job ID

b23ea9af-c6dc-40fa-86ce-75042b905173

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.

Rotation 1LatestID b23ea9af-c6dc-40fa-86ce-75042b905173Still openView listing →
Location
Boston, MA
Posted (ATS)
Sep 12, 2026
Last confirmed open
Oct 18, 2026
Open for
37 days +

Data provenance

Source platform: ashby
Source API URL: https://api.ashbyhq.com/posting-api/job-board/langchain?includeCompensation=true
Latest listing found: https://jobs.ashbyhq.com/langchain/b23ea9af-c6dc-40fa-86ce-75042b905173
Stream ID: 8ce16a68-e283-4c4e-a83e-9b1ea7cbd256

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