Senior Lead Machine Learning Engineer
UpworkPalo Alto, California, United States
Posted October 9, 2025
195000 - 296000 USD year
Full Time
About the Company
Upwork is a global marketplace connecting businesses with independent talent across various skills. Our platform serves startups to Fortune 100 companies, offering a trust-driven environment for innovative collaboration. With over 10,000 skill categories including development, design, and customer support, Upwork empowers companies and freelancers to unlock their full potential.
Job Description
Upwork is seeking a Senior Lead Machine Learning Engineer to drive the design and delivery of infrastructure and models for agentic LLM workflows across their platform. The role involves research, production deployment, mentorship, and contributing to the AI/ML community. This is a strategic leadership position focused on scaling and innovating within the world of AI and machine learning.
Requirements
- Design and implement resilient infrastructure for LLM systems.
- Lead training and fine-tuning of LLM foundations.
- Partner with engineering, product, and research teams.
- Mentor and support other engineers and researchers.
- Drive experimentation and translate findings into production systems.
Benefits
- Comprehensive medical coverage
- Unlimited PTO
- 401(k) plan
- Paid parental leave
- Employee Stock Purchase Plan
