Senior Machine Learning Engineer II, Search & Recommendations Ranking

Instacart

Senior Machine Learning Engineer II building ranking systems at Instacart. Architecting adaptive platforms for search and recommendations while mentoring ML engineers.

Posted 6/4/2026full-timeRemote • California, Colorado, Connecticut, Hawaii, Illinois, Maine, Maryland, Massachusetts, New Hampshire, New Jersey, New York, Oregon, Pennsylvania, Rhode Island, Texas, Vermont, Virginia, Washington • 🇺🇸 United StatesSenior💰 $173,000 - $253,500 per yearWebsite

Tech Stack

Tools & technologies

PandasPythonSQL

About the role

Key responsibilities & impact

Architect the ranking backbone for query understanding and personalization
Design and build a search autosuggest system
Develop production-grade Multi-Task Learning
Own the inference layer for quality optimization
Advance evaluation practices for long-horizon metrics
Partner across teams to translate business goals into ranking policies
Mentor ML engineers in ranking expertise

Requirements

What you’ll need

5+ years applying ML at scale
Proven track record improving ranking or recommendation systems in production
Experience in multi-objective or constrained optimization
Strong coding (Python) and data fluency (SQL/Pandas)
Expertise in classic ML techniques
Excellent analytical skills

Benefits

Comp & perks

Flexible work arrangements
Compensation grants
Health insurance
Retirement plans
Paid time off
Professional development opportunities

ATS Keywords

✓ Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

Multi-Task Learningranking systemsrecommendation systemsmulti-objective optimizationconstrained optimizationPythonSQLPandasclassic ML techniquesquality optimization

Soft Skills

analytical skillsmentoringcollaborationcommunication