Lead AI Engineer
Sphere is hiring for Lead AI Engineer in San Francisco HQ. Senior level. First seen August 6, 2026; open as of November 9, 2026. Jobs taken straight from company career pages — no aggregator in between.
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- Company
- Sphere
- Where
- San Francisco HQ
- Level
- Senior
- First seen
- August 6, 2026
- Listed via
- Ashby
What the posting says
THE ROLE You'll lead development of TRAM, our proprietary AI reasoning model that reads and interprets global trade law. This isn't a lookup problem, it's a reasoning problem — and it only became solvable with LLMs. You'll build the data pipelines that ingest legal sources, the model stack that produces structured evidence, the evaluation frameworks that measure accuracy, and the fine-tuning loops that improve performance. The unusual constraint: you need speed, scale, correctness, and robustness simultaneously — at millisecond latency, zero downtime, heading toward billions of transactions…
Read more and apply on Sphere's site
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