Backend Software Engineer - Mobile (San Francisco, Palo Alto, New York, Belgrade

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

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