Upwork is hiring a
Lead AI/ML Engineer

Summary

Join Upwork's Algorithms and Research Team as a Lead Machine Learning Engineer/Scientist to develop and maintain discriminative and generative AI models, design information retrieval systems, and collaborate with cross-functional teams.

Requirements

• Proven experience in designing and developing information retrieval or RAG systems
• Expertise in vector and/or graph databases
• Expertise in one of Transformers, CNNs or GNNs architectures and related concepts
• Familiarity with search and recommendations in two sided marketplaces
• Passion for developing autonomous agentic systems using LLMs
• Strong publication record in top-tier conferences like NeurIPS, CVPR, ICML, ICLR, etc

Responsibilities

• Design and develop retrieval augmentation methods for structured, unstructured and relational databases
• Develop and utilize knowledge graphs for information retrieval. Orchestrate information retrieval using knowledge graphs in the loop
• Investigate model explainability and work with trust and safety teams to enhance reliability and reduce hallucination in Gen-AI models
• Collaborate cross-functionally with machine learning engineers to take models from research to production
• Stay current with the latest advancements in Gen-AI and integrate relevant innovations into our systems
• Mentor junior engineers, conduct code reviews, and enforce engineering best practices. Deliver high-quality solutions that improve overall efficiency

Benefits

• Comprehensive medical insurance coverage for both you and your family
• Unlimited paid time off
• 401(k) plan with matching contributions
• 12 weeks of paid parental leave