Senior Lead Machine Learning Engineer, Agentic AI

Upwork(11 days ago)

HybridFull TimeSenior$177,654 - $237,562 (estimated)Machine Learning

About this role

A Senior Lead Machine Learning Engineer at Upwork will architect, ship, and scale agentic intelligence and the platform that powers it. The role combines hands‑on applied research and platform engineering to enable internal teams and external developers to build reliable, safe, and high‑performing AI agents across the Upwork ecosystem.

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Required Skills

Agentic Systems
LLM Training
RLHF
Data Curation
Prompt Engineering
Tool Integration
Distributed Systems
Microservices
APIs
Python

+11 more

About Upwork

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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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