Member of Technical Staff, Post-Training, RL is open at Mirendil in San Francisco. The posting gives a salary of $300K - $400K. Posted on Jun 24, 2026, and still on Mirendil’s careers page when we last checked, on Nov 14, 2026.
About the role
We are looking for research engineers to help build the post-training stack for frontier reasoning models. This role sits at the point where model capability, training dynamics, data, verification, and infrastructure all meet. You will design and run the experiments that turn a strong base model into a model that can solve difficult tasks reliably: choosing training objectives, shaping data mixtures, building…
The opening lines of the posting. The rest is on Mirendil’s careers page.
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