AI Research Engineer - Post Training

Job Description

Perplexity is looking for an AI Research Engineer to enhance its in-house Online LLMs, the Sonar models. The ideal candidate will leverage Perplexity's extensive query/answer dataset to improve Sonar model performance and deliver a state-of-the-art Online LLM experience.Responsibilities:

• Post-train SOTA LLMs on query answering using supervised and reinforcement learning techniques.
• Own the full-stack data, training, and evaluation pipelines for post-training LLM models.
• Deliver Sonar models that provide SOTA query answering.
• Collaborate with engineering teams to integrate Sonar models into the product.

Qualifications:

• Proven experience with large-scale LLMs and Deep Learning systems.
• Strong programming skills and versatility.
• Self-starter with a willingness to take ownership of tasks.
• Passion for tackling challenging problems.
• Minimum of 2 years of experience working on relevant projects.

Nice-to-have:

• PhD in Machine Learning or related areas.
• Experience in post-training LLMs with SFT/DPO/GRPO.

Perplexity offers:

• Cash compensation range: $190,000 - $260,000.
• Equity may be part of the total compensation package.
• Comprehensive health, dental, and vision insurance.
• 401(k) plan.