Lead Machine Learning Engineer

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Lead Machine Learning Engineer role focused on developing and optimizing AI/ML models and applications for an ultra-low-latency ad-serving platform and consumer-facing search solutions. Responsibilities include managing AI/ML project lifecycles, implementing MLOps best practices, contributing to model architecture, developing feature engineering pipelines, establishing A/B testing frameworks, translating research into production code, collaborating across teams, and mentoring junior engineers. Requires PhD with 5+ years or MS with 5-8+ years in AI/ML, experience in ads/search/recommendation systems, distributed low-latency ML services, production ML pipelines, Python, distributed frameworks, SQL, cloud infrastructure, and ML packages like TensorFlow and PyTorch. Preferred experience includes advanced ad models, online experimentation, reinforcement learning, fine tuning LLMs, and generative AI. Location is New York, full-time, on-site. Salary range $240,000 - $260,000 plus bonus and equity.