Mirrai Careers

Post-Training Applied Researcher

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San Francisco Remote Full-time$200k–$275k / year Posted 9d ago
Market rate. This role pays around the $439k median for similar USD roles (25 comparable postings in our corpus).
THE ROLE This role sits at the applied end of our post-training research efforts. You will work directly with stakeholders from the world’s fastest-growing AI companies to post-train open-source models that outperform frontier closed models on their specialised tasks. Your day-to-day is finding creative ways to extract signal from complex, domain-specific datasets and building the reward functions, environments, eval harnesses, and training pipelines that turn that signal into better models. The models you train ship to production and reach millions of users. We are looking for people with…

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