About Black Forest Labs

• We're the team behind Latent Diffusion, Stable Diffusion, and FLUX — foundational technologies that changed how the world creates images and video
• Headquartered in Freiburg, Germany with a growing presence in San Francisco
• Scaling fast while staying true to research excellence, open science, and human creativity

Why This Role

• Building foundation models for the next wave of visual intelligence
• Your research directly impacts products used by millions
• A Staff/Senior IC role requiring experience in leading pretraining

What You'll Work On

• Lead large-scale pretraining experiments for multimodal foundation models
• Develop and evaluate novel ideas across architecture, optimizers, and training algorithms
• Contribute across the full stack: GPU optimizations, research code, and model design
• Lead independent research projects and cross-team initiatives

What We're Looking For

• Experience leading or co-owning pretraining for a foundation model
• Deep experience with large-scale distributed training
• Strong intuition for architecture and objective design
• Track record of shipping in top venues and production impact
• Proficiency in Python and PyTorch
• Familiarity with visual generative models

How We Work Together

• A distributed team with real offices in Freiburg and SF
• Structured for in-person collaboration at least 2 days a week or remote work with monthly in-person weeks
• Grounded in values: Obsessed, Low Ego, Bold, Kind