Lead Machine Learning Engineer - Search & Recommendations

Upwork(9 days ago)

HybridFull TimeSenior$123,905 - $166,023 (estimated)Machine Learning

About this role

A Lead Machine Learning Engineer at Upwork will develop personalized memory systems for Search and Recommendations to improve understanding of user intent, preferences, and evolving behavior across interactions. The role focuses on encoding and surfacing memory signals to influence retrieval and ranking decisions across the marketplace. As a lead individual contributor, the position partners with engineering, research, product, and data teams to translate concepts into production-ready ML systems.

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Required Skills

Memory Modeling
Search
Recommendations
Retrieval
Ranking
Personalization
Temporal Dynamics
Feature Engineering
Experimentation
Deployment

+4 more

About Upwork

upwork.com

Upwork is a global freelancing marketplace that connects businesses of all sizes with independent professionals across design, development, writing, marketing, customer support, and more. Clients can post projects or search curated talent, review proposals, and manage engagements with contracts, time-tracking, invoicing, and escrow-backed payments. The platform also provides collaboration tools and enterprise features (talent sourcing, compliance, consolidated billing) to scale contingent work. Companies use Upwork for access to a large talent pool and standardized workflows, while freelancers benefit from job matching, portfolios, and secure payment systems.

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