P-1 AI · 9 hours ago
Machine Learning Engineer - Training & Infrastructure
San Francisco, CA
Full-time
Onsite
Mid Level
3+ years expP-1 AI is a company focused on building engineering AGI to revolutionize the built world through artificial intelligence. They are seeking a Machine Learning Engineer to manage large-scale LLM training operations, ensuring efficient and reliable training on GPU clusters and collaborating with researchers and ML engineers on model development.
Artificial Intelligence (AI)SoftwareWeb Development
Responsibilities
Own the training pipeline for large-scale LLM fine-tuning and post-training workflows
Configure, launch, monitor, and debug multi-node distributed training jobs using FSDP, DeepSpeed, or custom wrappers
Contribute to upstream and internal forks of training frameworks like TorchTune, TRL, and Hugging Face Transformers
Tune training parameters, memory footprints, and sharding strategies for optimal throughput
Work closely with infra and systems teams to maintain the health and utilization of our GPU clusters (e.g., Infiniband, NCCL, Slurm, Kubernetes)
Implement features or fixes to unblock novel use cases in our LLM training stack
Qualification
Required
3+ years working with large-scale ML systems or training pipelines
Deep familiarity with PyTorch, especially distributed training via FSDP, DeepSpeed, or DDP
Comfortable navigating training libraries like TorchTune, Accelerate, or Trainer APIs
Practical experience with multi-node GPU training, including profiling, debugging, and optimizing jobs
Understanding of low-level components like NCCL, Infiniband, CUDA memory, and model partitioning strategies
You enjoy bridging research and engineering—making messy ideas actually run on hardware
Preferred
Experience maintaining Slurm, Ray, or Kubernetes clusters
Past contributions to open-source ML training frameworks
Exposure to model scaling laws, checkpointing formats (e.g., HF sharded safetensors vs. distcp), or mixed precision training
Familiarity with on-policy reinforcement learning setups with inference (policy rollouts) as part of the training loop, such as GRPO, PPO, or A2C
Experience working at a startup
Company
P-1 AI
P-1 AI is a technology company focused on developing an artificial general engineering intelligence (AGEI).
2-10 employees
H1B Sponsorship
P-1 AI has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (1)
Funding
Current Stage
Early StageTotal Funding
$23MKey Investors
Radical VenturesVillage Global
2025-04-28Seed· $23M
2024-07-30Pre Seed
Leadership Team
Paul Eremenko
Co-Founder & CEO
Company data provided by crunchbase