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Member of Technical Staff (Model Behavior)

About the RoleWe're hiring software engineers for the Model Behavior team to help shape how Perplexity’s AI products behave: the style of their responses, and the way they use tools, skills, and memory. The team designs prompt and context e

Company

Perplexity

Location

San Francisco; Palo Alto

Status

Open

Posted

2026-07-30T18:12:04.348+00:00

Perplexity is hiring software engineers for its Model Behavior team, which shapes how the company's AI products respond and use tools, skills and memory. The work covers designing and testing prompts and context, building self-improvement loops, experimenting with and releasing new models, investigating failure modes in model outputs, and sharing context-engineering practices with other engineers. The posting seeks two to ten-plus years in software engineering or research, a strong engineering foundation, familiarity with LLM-driven and agentic systems, and experience steering model behaviour through prompts, tools or memory.