Backed by a16z.
About the role
Train diffusion models for image and video generation on large GPU clusters. Fully optimize and profile large distributed training runs across model architectures, kernels, data loading, memory constraints, and communication.
What they're looking for
- Proven track record in working with image or video models at scale (publications or open-source contributions a plus)
- Strong proficiency in PyTorch and understanding of its inner workings
- Strong background in distributed training paradigms such as FSDP, CP, SP, USP, TP, and EP. Knowing how different parallelism strategies work together and their tradeoffs
- Experience in profiling and debugging large distributed training. Being comfortable with analyzing traces to identify bottlenecks and look for improvements
- Good knowledge of low precision training / inference in FP8, NVFP4, and MXFP8
- Solid understanding of diffusion model training pipeline across pretraining, midtraining, preference optimization, and reinforcement learning
More about this role
At Krea, we are building next-generation AI creative tools.
We're dedicated to making AI intuitive and controllable for creatives - our mission is to build tools that empower human creativity, not replace it. We believe AI is a new medium that allows us to express ourselves through various formats - text, images, video, sound, and even 3D. We're building better, smarter, and more controllable tools to harness this medium. We recently took this a step forward with the launch of Krea 2 , our first foundation model, built completely from scratch for aesthetic diversity and stylistic control.
We've raised over $83M and are backed by world-class investors such as a16z, Bain Capital, and Abstract. We work full-time and in-person at our waterfront office in San Francisco. We care about creativity: our team includes musicians, designers, visual artists, and engineers.
We're looking for an experienced Researcher with engineering skills who can work on large-scale image and video models training experiments, with experience training image models at scale.
We work full-time and in-person at our North Beach office in San Francisco.
We believe that demonstrated interest in the creative space...
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