Lead AI/ML Engineer, Algorithms & Research
Remote
Upwork ($UPWK) is the world’s work marketplace. We serve everyone from one-person startups to large, Fortune 100 enterprises with a powerful, trust-driven platform that enables companies and talent to work together in new ways that unlock their potential.
Last year, more than $3.8 billion of work was done through Upwork by skilled professionals who are gaining more control by finding work they are passionate about and innovating their careers.
The Algorithms and Research Team within the ML & AI organization is responsible for building the foundational models that support all vertical teams, including Search & Recommendations and Upwork’s latest initiative, developing Uma, our AI assistant.
As a Lead Machine Learning Engineer/Scientist, you will play a crucial role in developing and maintaining discriminative and generative AI models. You will design, train/finetune, and evaluate information retrieval systems capable of handling both structured and unstructured databases. Leveraging historical context and diverse data, you will create innovative models to drive significant business impact.
Responsibilities:
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Design and develop retrieval augmentation methods for structured, unstructured, and relational databases.
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Develop and utilize knowledge graphs for information retrieval. Orchestrate information retrieval using knowledge graphs in the loop.
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Investigate model explainability and work with trust and safety teams to enhance reliability and reduce hallucination in Gen-AI models.
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Collaborate cross-functionally with machine learning engineers to take models from research to production.
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Stay current with the latest advancements in Gen-AI and integrate relevant innovations into our systems.
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Mentor junior engineers, conduct code reviews, and enforce engineering best practices. Deliver high-quality solutions that improve overall efficiency.
What it takes to catch our eye:
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Proven experience in designing and developing information retrieval or RAG systems.
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Expertise in vector and graph databases.
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Expertise in Graph Neural Networks (GNNs) and related concepts.
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Familiarity with knowledge graphs and ontology engineering.
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Familiarity with search and recommendations in two-sided marketplaces.
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Passion for developing autonomous agentic systems using LLMs.
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Strong publication record in top-tier conferences like NeurIPS, CVPR, ICML, ICLR, etc.
Come change how the world works.
At Upwork, you’ll shape talent solutions for how the world works today. We are a remote-first organization working together to …
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RestrictionsFull-time employees in 19 states in the United States
Benefits/Perks12 weeks of paid parental leave 401(k) matching Annual bonus plan Comprehensive medical insurance Development opportunities Employee stock purchase plan Equity incentive program Long term equity incentive program Medical Insurance Paid parental leave Remote work opportunities Remote work opportunities for a global community of professionals Sales Incentive Plan Unlimited Paid Time Off Unlimited PTO
Tasks- Collaborate with engineers
- Customer Focus
- Mentor junior engineers
AI AI/ML Generative AI Graph Databases Information Retrieval Knowledge graphs LLMs Machine Learning ML Production Recommendations Recruiting Remote work Research Sales Search Vector databases
Experience5 years