Member of Technical Staff (Model Behavior) at Perplexity
Posted on
Industry: Artificial Intelligence
Job Type: Full-time
Experience Level: Mid-Senior Level
Job Description
Perplexity is hiring software engineers for the Model Behavior team to shape how its AI products respond and how they use tools, skills, and memory. The work is prompt and context engineering across products and models, based in San Francisco or Palo Alto.
Responsibilities
- Design, test, and optimize the prompts, skills, tools, and memory that shape Perplexity responses across products, features, and use cases.
- Build self-improvement loops that steer prompts, improve tool and skill use, and improve how models draw on memory.
- Help experiment with and release new models.
- Identify inconsistencies and failure modes in model outputs through research on internal and production systems.
- Help engineers across teams build intuition for prompt design and context-engineering practices.
- Track prompting, context engineering, and alignment techniques and bring useful ideas back to the team.
Requirements
- 2 to 10+ years of experience in software engineering or research.
- Strong software engineering fundamentals and a technical understanding of LLM-driven and agentic systems.
- Experience shaping LLM behavior through prompts, tool and skill design, or memory systems.
- Strong written and verbal communication, including explaining complex concepts to different stakeholders.
- Nice to have: recent work on modern LLM-driven products.
- Nice to have: experience working across teams or with external partners.
- Nice to have: experience designing evaluations or benchmarks for AI systems.
Benefits
- Base salary of $200,000 to $330,000 per year.
- Equity.