AI Machine Learning Engineer - Personalization

Job Description

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. We also offer Perplexity Enterprise Pro, which counts leading companies like Nvidia, the Cleveland Cavaliers, Bridgewater, and Zoom as customers.

To support our rapid expansion, we've raised significant funding from some of the most respected technology investors. Our investor base includes IVP, NEA, Jeff Bezos, NVIDIA, Databricks, Bessemer Venture Partners, Elad Gil, Nat Friedman, Daniel Gross, Naval Ravikant, Tobi Lutke, and many other visionary individuals. In 2024, our employee base grew nearly 300%, and we're just getting started.

Perplexity is seeking experienced Applied AI&ML Engineers to help build next generation of personalization experience. In this role, you'll focus on improving user happiness on Perplexity by making the content highly relevant, personal and inspiring.

Responsibilities

Architect and build the next generation of personalization platform and models which serves as the foundation of highly personalized Perplexity user journey

Build effective data and models for LLM content and convert them into personalized ML signals which drives customized recommendation

Work across stack to deliver various types of models (LLM to DNN) to end users in a scalable and performant way\

Partner with product managers and partner team engineers to ensure fast and high quality deliverable to end users

Qualifications

Strong programming skills with the ability to work across the stack in a typical recommendation system or LLM stack

Experience in training DNN and Transformer architecture models

Experience in working with other LLM APIs to complete tasks like fine tuning, prompt mining or prototyping new ideas

Understands how to make tradeoffs in using different models

Self-motivated with a willingness to take ownership of tasks

A passion for shipping quality products

4+ years of industry experience

The cash compensation range for this role is $200,000 - $280,000.

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.

Full-time