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Perplexity AI is seeking a Software Engineer to evolve the core agent harness powering its flagship answer experience. In this role, you will combine strong product judgment with single- and multi-agent engineering paradigms to build the world's foremost agent for accumulating knowledge and answering society's most challenging questions.
You will translate user needs and quantitative insights into improvements to the agent's orchestration, context management, performance, and reliability. The ideal candidate understands that reliable agents at global scale require excellent observability, rigorous evaluation, and a developer experience that makes failures easy to reproduce and fix autonomously through methods like autoresearch.
The same harness will power the training and evaluation of new models, creating a tight feedback loop between production experiences and model improvement—central to Perplexity's mission. You'll ship fast and work between both product and infrastructure advancements in the technology stack.
Perplexity values craftsmanship, ownership, entrepreneurship, scholarship, and partnership. You'll identify problems, design solutions, and ship them with urgency. You'll work among highly talented peers pursuing knowledge and truth, upleveling yourself, your teams, and the products.
Required: 2+ years building and shipping large-scale AI systems and services with high reliability, availability, and performance. Strong software engineering craft with special care for developer experience and designing future-proof systems. Proficiency with Python (bonus: Rust and cloud infrastructure like AWS, Kubernetes). BS, MS, or PhD in Computer Science, Engineering, or related fields (or equivalent experience).
About Perplexity AI
AI / Data / Infrastructure — AI answer engine and search product for consumers and enterprises.
