Principal Research Engineer, Model Training & Post-Training is open at Inflection AI in Palo Alto, California, United States. The posting gives a salary of $400K - $550K. Posted on Jun 29, 2026, and still on Inflection AI’s careers page when we last checked, on Nov 14, 2026.
About the role
Inflection’s models are central to our product and platform strategy, and we are looking for a hands-on technical leader to own the model-improvement loop from data and training through evals, post-training, release criteria, and production feedback. This person will sit at the intersection of research, production engineering, and model release, with a mandate to ship models that are measurably better for users. The…
The opening lines of the posting. The rest is on Inflection AI’s careers page.
Hiring at Inflection AI
Inflection AI has 4 open roles right now. Most are in Engineering. See all its roles
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