Jobright is an AI-powered career platform that helps job seekers discover the top opportunities in the US. We are NOT a staffing agency. Jobright does not hire directly for these positions. We connect you with verified openings from employers you can trust. Job Summary: Whatnot is the largest livestream shopping platform in North America and Europe, redefining e-commerce through community and entertainment. The Machine Learning Engineer will play a crucial role in accelerating buyer growth by building and owning ML models for onboarding and user targeting, directly impacting user acquisition and conversion. Responsibilities: • Lead the design, development, and productionization of ML models that power user acquisition, activation, and retention (e.g., ranking models, targeting systems, uplift modeling). • Own the full model lifecycle: from data collection and feature engineering to model training, evaluation, deployment, and online experimentation. • Identify and prioritize high-impact opportunities where machine learning can unlock growth, collaborating with product, engineering, data, and marketing stakeholders. • Drive technical excellence and establish ML best practices across the Buyer Growth team. Qualifications: Required: • 8+ years of industry experience building and deploying ML systems at scale. • Demonstrated success in leading end-to-end ML projects that drove measurable business outcomes. • Deep expertise in personalization, ranking, or user modeling; strong intuition around user behavior in consumer products. • Advanced proficiency in Python, SQL, and common ML frameworks (e.g., PyTorch, TensorFlow, XGBoost). • Strong communication and leadership skills; ability to influence roadmap and align cross-functional teams. Preferred: • Experience building ML applications in E-commerce or Social products • Prior experience in growth domains: user segmentation, retention modeling, large scale recommendation systems, notification ranking, etc. Company: Whatnot is a livestream shopping platform for buying and selling products. Founded in 2019, headquartered in San Francisco, California, USA, team size 501-1000 employees, currently Late Stage. Whatnot has a track record of offering H1B sponsorships.