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AI Real-time Motion Retargeting Developer

Helvex Studio

Remote · $160k – $200k / year · Full-time · Posted 5 months ago

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About the role

Motion capture data recorded on a 6-foot actor needs to look natural when applied to a 4-foot cartoon character with different proportions, joint limits, and locomotion style. Naive retargeting creates floating feet, impossible joint angles, and motion that looks uncanny. Our real-time retargeting system solves these problems using learned motion priors and physics-aware constraints. The system processes motion capture streams at 120fps and outputs retargeted motion for characters with radically different skeletons — humanoids, quadrupeds, fantasy creatures with extra limbs. Each target skeleton has unique constraints, and the retargeting must preserve the intent and style of the original motion while respecting the target's physical capabilities. You'll push the quality boundary on our hardest cases: characters with non-human proportions, multi-character interaction sequences where contact points must stay consistent, and real-time performance capture where latency above 30ms breaks the performer's feedback loop. The animation tech team is five engineers; you'll be the senior ML engineer driving the retargeting research and production pipeline.

Fully remote.

Responsibilities

  • Advance real-time motion retargeting for diverse character skeletons
  • Build physics-aware constraint systems for non-human character proportions
  • Handle multi-character interaction retargeting with contact consistency
  • Optimize inference latency for real-time performance capture feedback
  • Design evaluation metrics comparing retargeted vs artist-corrected motion
  • Set technical direction for motion retargeting research

Requirements

  • 6+ years in animation ML, character physics, or motion synthesis
  • Deep understanding of skeletal animation and inverse kinematics
  • Strong PyTorch skills with real-time inference optimization experience
  • Experience with motion capture data processing and quality assessment
  • Portfolio demonstrating animation or motion retargeting work

Benefits

  • Fully remote with optional LA studio access for mocap sessions
  • Top-tier compensation plus equity
  • Health and dental from day one
  • $5,000 annual equipment and software budget
  • Work with cutting-edge motion AI

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Categories

AI & Machine Learning Engineers Automation & AI Workflows

Skills

python pytorch reinforcement learning computer vision docker

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Job Type

Full-time

Level

Senior

Language

English

Salary Range

$160k – $200k / year

AI Expertise

AI & Machine Learning Engineers Automation & AI Workflows

Skills

python pytorch reinforcement learning computer vision docker gcp

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