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AI Training Infrastructure Engineer - Post Training

Perplexityai
On-site
New York City; Palo Alto; San Francisco

Perplexity is an AI-powered answer engine founded in December 2022 and growing rapidly as one of the world’s leading AI platforms. Perplexity has raised over $1B in venture investment from some of the world’s most visionary and successful leaders, including Elad Gil, Daniel Gross, Jeff Bezos, Accel, IVP, NEA, NVIDIA, Samsung, and many more. Our objective is to build accurate, trustworthy AI that powers decision-making for people and assistive AI wherever decisions are being made. Throughout human history, change and innovation have always been driven by curious people. Today, curious people use Perplexity to answer more than 780 million queries every month–a number that’s growing rapidly for one simple reason: everyone can be curious. 

Perplexity is seeking experienced AI Research Engineers and Scientists to continue to improve our in house Online LLMs, the Sonar models. Your job is to work with team and create a robust and effective training framework (on top of Megatron/PyTorch), especially for post training LLMs.

Responsibilities

  • Build a post training framework that can run cutting-edge model training jobs in scale
  • Implement the necessary infra and components to support latest models and algorithms like SFT, RL (DPO/GRPO) and more
  • Own the full stack data, training, and eval pipelines required to post-train LLM models
  • Work closing with engineering teams to integrate Sonar models into our product.

Qualifications

  • Proven experience with large-scale LLMs frameworks building
  • Strong in Python/Pytorch; C++/CUDA is a plus
  • Self-starter with a willingness to take ownership of tasks
  • Passion for tackling challenging problems
  • Minimum of 6 years of working on relevant projects.

Bonus

  • PhD in AI/ML/Systems or related areas
  • Experience building LLM training frameworks, especially post training

The cash compensation range for this role is $220,000 - $290,000.

Final offer amounts are determined by multiple factors, including, experience and expertise, and may vary from the amounts listed above.

Equity: In addition to the base salary, equity may be part of the total compensation package.
Benefits: Comprehensive health, dental, and vision insurance for you and your dependents. Includes a 401(k) plan.

 

Apply now
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