[Remote] Machine Learning Engineer, Growth

Note: The job is a remote job and is open to candidates in USA. Whatnot is the largest livestream shopping platform in North America and Europe, focused on building live commerce at an unprecedented scale. They are seeking a Machine Learning Engineer to drive buyer growth through data-driven experiences, responsible for developing ML models that enhance user acquisition and engagement.ResponsibilitiesLead 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 experimentationIdentify and prioritize high-impact opportunities where machine learning can unlock growth, collaborating with product, engineering, data, and marketing stakeholdersDrive technical excellence and establish ML best practices across the Buyer Growth teamSkills5+ years of industry experience building and deploying ML systems at scaleDemonstrated success in leading end-to-end ML projects that drove measurable business outcomesDeep expertise in personalization, ranking, or user modeling; strong intuition around user behavior in consumer productsAdvanced 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 teamsExperience building ML applications in E-commerce or Social productsPrior experience in growth domains: user segmentation, retention modeling, large scale recommendation systems, notification ranking, etcBenefitsFlexible Time off Policy and Company-wide Holidays (including a spring and winter break)Health Insurance options including Medical, Dental, VisionWork From Home SupportHome office setup allowanceMonthly allowance for cell phone and internetMonthly allowance for wellnessAnnual allowance towards ChildcareLifetime benefit for family planning, such as adoption or fertility expenses401k offering for Traditional and Roth accounts in the US (employer match up to 4% of base salary) and Pension plans internationallyMonthly allowance to dogfood the app16 weeks of paid parental leave + one month gradual return to work \•company leave allowances run concurrently with country leave requirements which take precedence.Company OverviewWhatnot is a livestream shopping platform for buying and selling products. It was founded in 2019, and is headquartered in San Francisco, California, USA, with a workforce of 1001-5000 employees. Its website is https://www.whatnot.com.Company H1B SponsorshipWhatnot has a track record of offering H1B sponsorships, with 6 in 2026, 34 in 2025, 20 in 2024, 18 in 2023, 10 in 2022. Please note that this does not guarantee sponsorship for this specific role.