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Applied Research Engineer

250k – 300kSan Francisco, CAHybrid3+ YOE
Summary

Develops advanced systems for human-in-the-loop AI data alignment using RLHF/DPO, improves data quality, and builds AI-assisted labeling tools. Requires Master's/PhD, 3+ years ML experience, Python/PyTorch proficiency, and top-tier publications.

About the role

Responsibilities

  • Advance AI alignment by developing methods like RLHF and novel approaches to ensure AI systems reflect human preferences.
  • Improve human-in-the-loop data quality through measurement and enhancement systems.
  • Create AI-assisted data labeling tools using active learning and adaptive sampling.
  • Investigate impacts of human feedback types (demonstrations, preferences, critiques) on model performance.
  • Optimize human feedback collection with novel algorithms.
  • Integrate research breakthroughs into Labelbox’s product suite.
  • Engage with customers and AI community, publish in top conferences, and create technical content.

Requirements

  • Ph.D. or Master’s in Computer Science, Machine Learning, AI, or related field.
  • 3+ years experience solving complex ML challenges with real-world impact.
  • Expertise in data quality measurement and refinement systems.
  • Deep understanding of frontier AI models (LLMs, multimodal) and human data strategies.
  • Proficiency in Python and deep learning frameworks (PyTorch, JAX, TensorFlow).
  • Track record of publishing in top AI/ML conferences (NeurIPS, ICML, ICLR, etc.).
  • Ability to bridge research to prototypes, strong analytical/problem-solving skills.
  • Exceptional communication and collaboration skills.

Compensation

Annual base salary range: $250,000—$300,000 USD (varies by skills, experience, location; excludes equity/benefits).

Skills
PythonPyTorchJAXTensorFlowRLHFDPOMachine LearningDeep LearningActive LearningLarge Language Models
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