Backend Software Engineer - Mobile

Perplexity is looking for an experienced Backend Engineer to join our small team revolutionizing the way people search and interact with the internet. You will be responsible for leading design, implementation, and scaling of backend systems that power web, mobile, and browser products. Tech Stack: Python | PostgreSQL | DynamoDB | Redis | FastAPI Responsibilities Build scalable systems that ingest and process data from the web, files, and other sources. Optimize interfaces that interact with databases and caching systems. Collaborate with PMs, frontend engineers, and other stakeholders to understand product requirements. Work closely with AI, Search, and Data Science teams to iterate on non-deterministic systems. Manage a complex orchestration system with many moving parts and interfaces. Scale, optimize, and load balance multiple services with rapidly changing needs. Qualifications Strong experience with Python Strong experience with databases and caching Experience with AWS cloud infrastructure at scale Experience working with high-scale data and non-deterministic systems like LLMs 4+ years of engineering experience

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.