Research Engineer

About the Role

As a Research Engineer at Metis, you’ll work on building the next generation of autonomous post-training systems that leverage our Mantis platform. You’ll operate at the intersection of cutting-edge ML research and scalable engineering, designing, implementing, and deploying algorithms that improve how AI agents learn from feedback, synthetic data, and real-world interactions.

You’ll move seamlessly between papers and production, leading large-scale experiments, creating optimized training pipelines, and helping shape the future of post-training autonomy. You’ll have significant ownership, high compute budgets, and the mandate to push the state of the art in applied reinforcement and preference optimization.

What You'll Do

• Research and help build an autonomous post-training agent leveraging the Mantis platform


• Design and execute large-scale experiments on synthetic data generation and algorithmic architecture


• Develop and refine methods for reinforcement learning, reward modeling, and human feedback integration


• Collaborate cross-functionally with Core and Platform Engineering to deploy and evaluate models in production settings


• Publish or contribute to leading-edge research in the post-training domain


• Use tooling and compute efficiently to iterate on experimental pipelines and accelerate research velocity

Requirements

• Deep experience in machine learning, preferably reinforcement learning, post-training, or alignment research


• Demonstrated research contributions; ideally published papers (ICML, NeurIPS) or public implementations


• Strong proficiency in Python and ML frameworks (PyTorch, JAX, or TensorFlow)


• Comfort with distributed training, high-throughput data pipelines, and large-scale experiment management


• Ability to reason independently, formulate hypotheses, and run experiments from idea → insight → product impact

Compensation & Benefits

• Base: $200,000–$1,000,000


• Significant Equity


• Full medical, dental, and vision


• Wellness & L&D stipend


• Equinox membership


• Breakfast, lunch, and dinner provided (Unlimited Doordash)


• $25,000 housing stipend

About Metis

Metis helps enterprises and labs build the most reliable AI agents by leveraging post-training. Our platform enables the creation, improvement, and deployment of the most capable frontier agents designed for rigorous, real-world workflows.

• 0 → six-figure monthly revenue in the last six weeks


• Working with several Fortune 500 enterprises & frontier AI labs


• Growing 150%+ MoM