Senior Machine Learning Engineer - Ranking
Core
Design and improve ranking systems for a performance marketplace to balance user satisfaction, business goals, and system health.
Role type
Senior IC machine learning engineer (ranking)
Builds
Ranking algorithms, evaluation pipelines, and high-value signals for ad discovery and prioritization
Domain
Digital media, performance marketing, online marketplaces
Deliverable
production ML models
Required skills
applied machine learning, statistics, optimization, Python, software engineering, large-scale distributed systems, latency-sensitive production ML
Preferred skills
production-grade ranking systems, feature stores, large-scale A/B testing, concept drift detection, online learning, SQL, linear algebra, combinatorial optimization, multimodal signals
Technologies
Python, SQL
Responsibilities
Design and improve ranking systems through rigorous measurement and experimentation; advance evaluation practices including offline and online alignment; build high-value signals and features with reliable pipelines; make uncertainty-aware decisions to handle drift and calibration; partner with cross-functional teams to ship resilient solutions
Seniority
Senior, hands-on IC
