Staff Data Scientist (AI)

Location: Sunnyvale, California, United States; home office at 1395 Crossman Ave

Annual salary: $143,000–$286,000, plus performance-based bonuses and possible stock compensation.

Company

hirify.global Global Tech develops technology and data products for hirify.global, a large-scale retail and eCommerce business serving hundreds of millions of people.

What you will do

• Lead machine learning solutions for BuyBox offer ranking, Variant Leader Selection, Search, and Personalization.
• Build ranking and recommendation systems using Learning-to-Rank, deep learning, neural networks, embeddings, and modern machine learning techniques.
• Apply Generative AI and LLMs to semantic understanding, personalization, ranking, and customer experience.
• Lead initiatives from problem formulation and research through offline evaluation, A/B testing, production deployment, monitoring, and impact measurement.
• Identify data sources, ensure data quality, and build scalable data pipelines and production ML systems.
• Partner with Product, Engineering, Analytics, and business stakeholders; establish ML practices and mentor Data Scientists.

Requirements

• Required expertise in machine learning, ranking, recommendation systems, information retrieval, and personalization.
• Proficiency in Python, BigQuery, PySpark, Hive, and data visualization tools.
• Deep understanding of Learning-to-Rank, neural networks, embeddings, representation learning, and recommendation techniques.
• Experience applying Generative AI and LLMs to real-world machine learning problems.
• Experience building and deploying data pipelines, MLOps, and large-scale production ML systems.
• Strong knowledge of experimentation, A/B testing, statistical methods, and model evaluation.
• Ability to lead complex, ambiguous initiatives, influence technical direction, communicate effectively, and collaborate cross-functionally.
• One of the following minimum qualification paths: a bachelor's degree in a listed quantitative or computing field plus 4 years of analytics-related experience; a master's degree in a listed field plus 2 years of analytics-related experience; or 6 years of experience in analytics or a related field.

Nice to have

• Data science, machine learning, optimization models, or a PhD in Machine Learning, Computer Science, Information Technology, Operations Research, Statistics, or Applied Mathematics.
• Successful completion of assessments in Python, Spark, Scala, or R.
• Experience with open-source frameworks such as scikit-learn, TensorFlow, or Torch.
• Knowledge of WCAG 2.2 AA, assistive technologies, and digital accessibility best practices.

Culture & Benefits

• Full-time employment within hirify.global Global Tech, with opportunities to work on technology operating at hirify.global scale.
• Benefits may include 401(k) matching, stock purchase plans, health plans, paid parental leave, PTO, sick leave, family care leave, and disability coverage.
• Additional benefits include company-paid life insurance, company discounts, military leave pay, and adoption or surrogacy expense reimbursement.
• Live Better U provides eligible full-time and part-time associates with hirify.global-paid education benefits, including tuition, books, and fees for qualifying programs.
• Performance-based bonus awards may be available; benefits depend on job classification, eligibility, and applicable plan terms.