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Job Description
Whatnot is seeking a Machine Learning Engineer to join their Buyer Growth team. This role focuses on driving top-of-funnel growth and first-time buyer success through intelligent, data-driven experiences. The Machine Learning Engineer will be responsible for building and owning ML models for personalization in onboarding and user targeting across acquisition and engagement channels. This is a high-impact role directly contributing to the growth of Whatnot’s buyer base and improving first-time user conversion.
Role Involves:
- Leading the design, development, and productionization of ML models for user acquisition, activation, and retention.
- Owning the full model lifecycle from data collection and feature engineering to model training, evaluation, deployment, and online experimentation.
- Identifying and prioritizing high-impact opportunities where machine learning can unlock growth.
- Collaborating with product, engineering, data, and marketing stakeholders.
- Driving technical excellence and establishing ML best practices across the Buyer Growth team.
Requirements:
- 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.
- Advanced proficiency in Python, SQL, and common ML frameworks (e.g., PyTorch, TensorFlow, XGBoost).
- Strong communication and leadership skills.
What Whatnot Offers:
- Flexible Time off Policy and Company-wide Holidays
- Health Insurance options including Medical, Dental, Vision
- Work From Home Support
- Home office setup allowance
- Monthly allowance for cell phone and internet
- Monthly allowance for wellness
- Annual allowance towards Childcare
- Lifetime benefit for family planning, such as adoption or fertility expenses
- Retirement; 401k offering for Traditional and Roth accounts in the US (employer match up to 4% of base salary) and Pension plans internationally
- Monthly allowance to dogfood the app
- 16 weeks of paid parental leave + one month gradual return to work
