Lead Machine Learning Engineer at Upwork

Join Upwork as a Senior Lead Machine Learning Engineer focused on advancing agentic intelligence. Lead the development of AI agents and backend platforms that drive business transformation.
In this high-impact role, you will architect and scale machine learning solutions across Upwork. With responsibilities including multi-agent system design, LLM training, and platform engineering, you'll enable both internal teams and external developers to create high-performing agents. Your expertise will ensure reliability and performance while mentoring and leading cross-functional initiatives.
Key Responsibilities:
• Build and implement multi-agent systems with recovery strategies
• Develop protocol-aware agents that integrate with developer tooling
• Train and evaluate LLMs tailored to agent tasks
• Engineer backend infrastructure for low-latency inference
• Optimize performance through metrics and continuous improvement
Requirements:
• 8–12+ years in applied ML with ...