Senior Machine Learning Engineer

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Machine Learning Engineer based in the United States. This is a high-impact role focused on building and scaling personalization and recommendation systems within a fast-moving digital marketplace. You will design ML-driven solutions that shape how users discover, evaluate, and engage with products across search, ranking, and recommendation surfaces. The role sits at the intersection of data science, engineering, and product, with strong ownership over model design and production deployment. You will work with large-scale behavioral and transactional datasets to improve relevance, conversion, and user experience. This environment is lean, autonomous, and highly collaborative, requiring both technical depth and strong product intuition. Your work will directly influence marketplace efficiency, inventory visibility, and business growth outcomes.