Senior Lead Machine Learning Engineer, Agentic AI

We’re seeking a Senior Lead Machine Learning Engineer to architect, ship, and scale the next generation of agentic intelligence across Upwork.

Requirements

• Build Agentic Intelligence
• Design and implement multi‐agent systems
• Develop protocol‐aware agents and services
• Own reliability at scale
• Train, Align, and Evaluate LLMs for Agents
• Stand up evaluation harnesses for functional, task, and longitudinal metrics
• Build policy‐driven guardrails
• Engineer Agentic Platform Backend Infrastructure
• Ship production‐grade services
• Optimize cost/performance via quantization, distillation, model‐routing, and autoscaling
• Lead, Partner, and Uplevel the Ecosystem

Benefits

• Paid time off
• Health insurance
• 401k matching