We're looking for a Senior Machine Learning Engineer to optimize survey respondent experience and business efficiency through advanced ML solutions. You'll work on supervised learning, reinforcement learning (RL), and large language models (LLMs) to improve how we match respondents to surveys and ensure quality while maximizing business impact. This role demands autonomy, deep technical expertise, and a strong ability to mentor others in MLOps best practices. You'll collaborate with data engineers, software engineers, and product teams while helping design, develop, and scale our ML infrastructure on AWS.