Upwork

Senior Lead Machine Learning Engineer

Upwork

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5 months ago
Remote, Worldwide
Senior / Staff+
H1B Sponsor

Responsibilities

  • Design and implement resilient infrastructure for agentic LLM systems.
  • Lead training and fine-tuning of large-scale foundation models.
  • Partner with engineering, product, and research teams to align technical development with business priorities.
  • Mentor and support other engineers and researchers.
  • Drive experimentation and translate findings into scalable production systems.
  • Identify opportunities for innovation and lead initiatives in applied ML.
  • Contribute to the external AI/ML community through papers and talks.

Requirements

  • Demonstrated expertise in building and deploying advanced ML models using Python and frameworks like PyTorch or TensorFlow.
  • Deep technical understanding of transformer-based models and generative AI.
  • Proven experience training large models on GPU clusters and integrating LLMs with APIs.
  • Track record of leading high-impact, cross-functional initiatives.
  • A collaborative mindset and clear communication skills.

Benefits

  • Comprehensive medical coverage for you and your family.
  • Unlimited PTO.
  • 401(k) plan with matching.
  • 12 weeks of paid parental leave.
  • Employee Stock Purchase Plan.

Tech Stack

PythonPyTorchTensorFlow

Categories

AI & MLData Science