Research Scientist, Real-Time Interactivity / Inference
Reactor · San Francisco
Infrastructureonsite
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
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