Sr. Data Scientist
Core
Leading the design, development, and productionization of ML systems for e-commerce search, including query understanding, content understanding, retrieval, ranking, and ads/recommendations.
Role type
Senior IC machine-learning engineer (search & recommendations)
Builds
Search systems, ranking algorithms, and recommendation engines for Target.com
Domain
E-commerce, Search Technology, Machine Learning
Deliverable
production ML models
Required skills
Deep learning, NLP, representation learning, LLM-based approaches, Python, SQL, Spark, LLM adaptation (fine-tuning, instruction tuning, RAG), agentic workflows, multi-objective optimization, online experimentation, model lifecycle tooling
Preferred skills
Publications at top-tier conferences (SIGIR, KDD, NeurIPS, etc.), operating ML systems at scale (latency/throughput, drift detection), multi-objective optimization with fairness constraints
Technologies
Python, SQL, Spark, LLMs, RAG, orchestration frameworks
Responsibilities
Leading technical direction and strategy for search/relevance capabilities, architecting end-to-end solutions integrating modeling and engineering, serving as a technical leader and mentor for scientific rigor and best practices
Seniority
Senior, hands-on IC with leadership responsibilities
