AI Agent Engine Engineer — Frontier Intelligence

Wwshemi; San Francisco (CA); On-site; USD 150,000 - 210,000; Full time

Job summary

Perplexity, a leader in frontier AI experiences, is seeking energetic engineers to join our Agent Engine team in San Francisco. You will help design and build agentic systems including Perplexity Computer, the Comet ecosystem, and our Agent API, advancing how users interact with intelligent agents.

You’ll collaborate with engineering and applied research to tackle open problems, with a bias toward ownership, shipping reliable products, and delivering delightful user experiences across local and

Qualifications

• Strong foundational familiarity with the AI systems stack.
• Proficiency in Python (bonus points for TypeScript, Go, and/or Rust).
• Experience in at least one of: harness engineering, agent skills and plugin architectures, model training and reinforcement learning, or browser technologies (CDP, Playwright, extension development).
• Strong technical intuition and taste for user experience excellence.
• Comfortable working with a small, fast-moving team; bias toward ownership.

Responsibilities

• Design frontier agent harnesses and systems to perform high-stakes, mission-critical work for users.
• Leverage action and decision models to accomplish user-specified objectives based on multimodal states.
• Provide consistently excellent experiences across local execution, headless cloud, custom executors, and other environments through sound system design and flexible abstractions.
• Develop permission architectures, payload classifiers, and other methods to implement secure-by-design agentic capabilities.
• Design optimal data representations and modes of interaction between agents and their environments.
• Collaborate with engineering and applied research to solve open AI problems.

Job description

Perplexity, a leader in frontier AI experiences, is seeking energetic engineers to join our Agent Engine team in San Francisco. You will help design and build agentic systems including Perplexity Computer, the Comet ecosystem, and our Agent API, advancing how users interact with intelligent agents.

You’ll collaborate with engineering and applied research to tackle open problems, with a bias toward ownership, shipping reliable products, and delivering delightful user experiences across local and