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Research Scientist, Real-Time Interactivity / Inference

Reactor · San Francisco

Infrastructureonsite
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At a glance

Highlights

  • Invent methods letting people, agents, robots drive world models frame-by-frame
  • Shape next-gen real-time interactive video and world model architectures
  • Research ships on platform running 15+ fastest world models at scale

What they offer

  • Room to influence direction and lead your own research agenda
  • Access to real workloads across multiple state-of-the-art model families
  • Close collaboration with world-class ML inference engineering team
  • Sufficient compute to train and serve models at scale
  • Dedicated support for publishing at top conferences
  • Competitive SF salary and meaningful early equity
  • Visa sponsorship and relocation support
  • Generous health, dental, and vision coverage

Ideal candidate

Systems-minded researcher who treats latency, memory, and quality as one problem and wants inventions to ship in real products. You value open, high-impact work and close collaboration with engineers and model builders.

Requirements

  • PhD in ML, computer vision, graphics, robotics, or related field, or equivalent practical experience
  • Track record in real-time or streaming video generation, autoregressive/causal diffusion, distillation, efficient models, or controllable generation
  • Think of latency, memory, and model quality as one problem rather than three
  • Fluent in PyTorch and/or JAX and comfortable with large-scale training and inference infrastructure
  • Real systems intuition - can read a profiler, reason about memory bandwidth, and work with kernel engineers
  • Value quality over quantity in publishing and widely adopted open-source work
visa sponsorship
Visa sponsorship and relocation support

Lab profile

About Reactor

Inference platform for real-time world models powering media, physical AI, and omni-directional applications.

What they build

  • Inference platform for real-time world models
  • Catalog of 15+ world models including LingBot World 2, LTX 2.5 Realtime, HappyOyster

Known for

  • Largest and fastest world model catalog
  • Real-time optimized inference
  • Works with Alibaba, Amazon, and NVIDIA

Key facts

  • Raised $59M led by Lightspeed
  • Backed by Amplify Partners, WndrCo, and NVentures
More about Reactor →
Apply on the lab’s site ↗

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