Founding Engineer - Machine Learning

ABOUT THE ROLE This is a rare opportunity to join a Series A AI data and services company as a Founding ML Engineer, working directly alongside the founding team to build and scale core machine learning systems from the ground up. You will bridge research and engineering — designing, training, and shipping production-grade models for top AI frontier labs — while helping shape the company's technical culture and infrastructure. The company specializes in high-quality training and post-training data, reinforcement learning environments, and intelligent agents that accelerate AI model performance for both frontier labs and enterprises. This is a high-ownership, high-impact role: your work will directly establish the foundation for how the team delivers measurable ML outcomes. Visa sponsorship is not available for this role. WHAT YOU'LL DO - Build and optimize end-to-end ML pipelines, from data ingestion through to deployment. - Implement and fine-tune LLMs, embeddings, and generative models for real-world applications. - Develop efficient training and inference systems leveraging distributed compute. - Partner with data and product teams to translate ideas into measurable ML impact. -... Click Apply to read the full job description.