Senior Machine Learning Engineer - United States - Remote

Job Title: Senior Machine Learning Engineer Location: United States (Remote) JD in One Line Own recommendation, search, ranking, retrieval, and discovery for a consumer content ecosystem. What You Will Own * Build recommendation and search across feed, discovery, search, and content continuation. * Own retrieval and ranking systems, including candidate generation, embeddings, two-tower models, feature engineering, and serving quality. * Design, launch, and analyze recommendation and search experiments. Requirements * 5+ years of industry experience building production ML systems with senior-level ownership. * Hands-on experience with recommendation, search, ranking, ads ranking, feed ranking, or content discovery systems. * Experience working on consumer applications, entertainment, social media, gaming, creator platforms, or other engagement-driven products. * Strong knowledge of two-tower models, embedding retrieval, candidate generation, ranking systems, and online/offline evaluation. Hard Filters * 5+ years of industry experience building production ML systems with senior-level ownership. * Hands-on experience with recommendation, search, ranking, ads ranking, feed ranking, or content discovery systems. * Experience with consumer applications, entertainment, social, gaming, creator, or engagement-driven products. * Expertise in two-tower models, embedding retrieval, candidate generation, ranking, and online/offline evaluation. * Fluency in Chinese (Mandarin) is required. Strong Fit * Built recommendation and search systems across feed, discovery, search, and content continuation. * Owned retrieval and ranking systems, including candidate generation, embeddings, two-tower models, features, and serving quality. * Designed, launched, and analyzed recommendation/search experiments. Bonus Signals

• 5+ years of production ML experience.
• Strong background in recommendation systems.
• Experience with search ranking.
• Experience with embedding retrieval.

Anti-Signals * Cannot demonstrate core Senior Machine Learning Engineer experience focused on recommendation systems.

• Not comfortable with the specified remote work arrangement.
• Primarily coordination-focused with limited technical ownership or no

shipped production examples. Interview Process

• Initial recruiter screen.
• Senior Machine Learning Engineer (Recommendation) technical/product deep

dive. * Team/founder conversation. Culture * AI-native, fast-paced startup environment with strong ownership expectations. * Focus on building consumer AI products at the intersection of AI, social, mobile, and interactive entertainment. * Looking for engineers who ship quickly, learn from users, and take end-to-end ownership. This is a remote position.