AI Research Engineer - Post Training

Perplexity is seeking top-level AI Research Engineers to continue to improve our in-house Online LLMs, the Sonar models. Your job is to take advantage of our rich query/answer dataset to continue to scale our Sonar model performance and provide the SOTA Online LLM experience to our users. Responsibilities Post-train SOTA LLMs on query answering by using the latest in supervised and reinforcement learning techniques Own the full stack data, training, and eval pipelines required to post-train LLM models Deliver Sonar models that provide SOTA query answering Work closely with engineering teams to integrate Sonar models into our product Qualifications Proven experience with large-scale LLMs and Deep Learning systems Strong programming skills; versatility is a plus Self-starter with a willingness to take ownership of tasks Passion for tackling challenging problems Minimum of 2 years

of working on relevant projects Nice-to-have PhD in Machine Learning or related areas. Experience in post-training LLMs with SFT/DPO/GRPO. The cash compensation range for this role is $190,000 - $260,000. At Perplexity, we've experienced tremendous growth and adoption since publicly launching the world's first fully functional conversational answer engine in 2022. We've grown from answering 2.5 million questions per day at the start of 2024 to around 20 million daily queries in December 2024. To support our rapid expansion, we've raised significant funding from some of the most respected technology investors. In 2024, our employee base grew nearly 300%, and we're just getting started. 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 is part of the total compensation package.

Interested in learning more about this job Scroll down and find out what skills, experience and educational qualifications are needed. Benefits: Comprehensive health, dental, and vision insurance for you and your dependents. Includes a 401(k) plan. Apply for this job * indicates a required field

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