Staff Machine Learning Engineer (Personalization)

Location: Hybrid role based in San Francisco, CA or Sunnyvale, CA, United States, with some time in-office and some time remote.

Salary: $203,500–$299,300 USD base salary annually, plus potential equity grants.

Company

hirify.global operates an on-demand logistics engine for last-mile retail delivery, including grocery and convenience delivery.

What you will do

• Develop production machine learning solutions for personalized shopping experiences across grocery, convenience, and retail categories.
• Conceptualize, design, implement, and validate algorithmic improvements for growth and personalization experiences.
• Use data and machine learning infrastructure to improve the relevance and seamlessness of consumer search.
• Partner with engineering and product leaders to shape the product roadmap through machine learning.
• Lead cross-functional pods and mentor junior team members.

Requirements

• 8+ years of industry experience developing machine learning models with business impact and shipping ML solutions to production.
• Expertise in applied machine learning for causal inference and recommendation systems, using classical and deep learning approaches.
• Machine learning experience with Python; PyTorch or TensorFlow experience is preferred.
• Proficiency with AI coding tools such as Claude Code, Codex, or Cursor across the software development lifecycle.
• Master’s or PhD in statistics, computer science, mathematics, operations research, physics, economics, or another quantitative field.
• Ability to communicate technical details to nontechnical stakeholders and work collaboratively across disciplines.

Nice to have

• Familiarity with explore/exploit methods, multi-armed bandit algorithms, or large language models.

Culture & Benefits

• Hybrid work arrangement with a combination of office and remote work.
• 401(k) plan with employer matching.
• Medical, dental, vision, disability, and basic life insurance.
• 16 weeks of paid parental leave, paid time off, paid sick leave, and 11 paid holidays.
• Wellness, commuter, mental health, and family-forming assistance benefits.