Krea AI
ML Researcher - Posttraining
San Francisco · Full-time
Sponsorship not specifiedDetected 45 days ago
ExpressAlgorithmsMachine LearningPyTorchLLMsRoboticsResearch
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odds of building a lasting career here
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Cap-exempt (no lottery)0
Sponsors this role68
Entry-level history0
PERM / green-card track0
Lottery odds40
Fits your clock70
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About the role
- We believe AI is a new medium that allows us to express ourselves through various formats - text, images, video, sound, and even 3D.
- 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.
Responsibilities
- Coordinate with data teams and partners to manage collection of preference data and model evaluation results.
- Collaborate with our AI research and engineering teams to integrate advancements into our products.
- Team: Work alongside a world-class team building the future of AI creative tooling
Requirements
- Proven work of posttraining diffusion models for image or video generation.
- Experience with large-scale model training, inference, and optimization.
- Strong understanding of both LLM and diffusion post training pipelines and algorithms such as PPO, GRPO, DPO, OPD, and MOPD.
- Strong proficiency in PyTorch and understanding of its inner workings.
- Good knowledge of low precision training / inference in FP8, NVFP4, and MXFP8.
- Experience training VLM models.
Compensation
- generous salary & equity packages
Benefits
- Competitive compensation: generous salary & equity packages
- Health & wellness: 100% health & 99% dental/vision insurance premiums covered for employees, health FSA accounts, & long-term disability coverage
- Time off: Flexible PTO policy
- Please note the above benefits & perks are for full-time employees
- Implement posttraining techniques ranging from supervised finetuning, preference optimization, reinforcement learning, on-policy distillation, and various distillation / acceleration techniques.
Company info
- We work full-time and in-person at our North Beach office in San Francisco.
- Fast iteration and execution speed. Bias towards action, agency, and independence.
- Train custom VLM as reward models as part of our reward design.
Visa & Work Authorization
- We're open to sponsoring international visas where we can (e.g., STEM OPT, OPT, H-1B, O-1, E-3).
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This listing is sourced directly from Krea AI's careers page and normalized into a canonical job model.