Member of Technical Staff (Model Behavior)

Perplexity
San Francisco, Palo Alto
Workplace: HybridFull timeUSD 200,000 - 330,000 annuallyFunction: Software EngineeringExperience: 2+ yearsSkills: ["Analytical thinking","Experiment-driven problem solving","Communication"]

Help shape how Perplexity’s AI products behave through context and prompt engineering for model style and tool/skill/memory usage. You’ll design, test, and optimize prompts, skills, tools, and memory; build self-improvement loops; contribute to model releases; and run research to find failure modes. You’ll also share best practices and stay current on prompting, context engineering, and alignment techniques from industry and academia.

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Perplexity
Perplexity
1 month ago

Member of Technical Staff (Model Behavior)

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Last checked: 3 hours agoStatus: Live

Job Summary

Help shape how Perplexity’s AI products behave through context and prompt engineering for model style and tool/skill/memory usage. You’ll design, test, and optimize prompts, skills, tools, and memory; build self-improvement loops; contribute to model releases; and run research to find failure modes. You’ll also share best practices and stay current on prompting, context engineering, and alignment techniques from industry and academia.
Location: San Francisco, Palo Alto
Workplace: Hybrid
Employment Type: Full time
Job Function: Software Engineering
Seniority: Mid level

Key Responsibilities

  • •Design, test, and optimize prompts, skills, tools, and memory that shape responses across products and use cases.
  • •Build self-improvement loops to steer prompts and improve tool/skill use and memory utilization.
  • •Experiment with and help release new models.
  • •Identify inconsistencies and failure modes in model outputs through research for internal and production systems.
  • •Share prompt design and context engineering best practices and stay current with industry and academia techniques.

Pay and Benefits

Salary: USD 200,000 - 330,000 annually

Key Requirements

  • •2 to 10+ years of experience in software engineering or research.
  • •Strong software engineering fundamentals and 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 skills, explaining complex concepts to diverse stakeholders.
  • •Ability to take an analytical, experiment-driven approach to solving challenging problems.
Experience:2+ yearsLLM-driven productsAgentic systemsAI research
Skills:Analytical thinkingExperiment-driven problem solvingCommunication

Company Brief

Perplexity
Perplexity AI provides an AI-powered answer engine that returns conversational, citation-backed answers to user queries and offers Pro/Enterprise products and APIs for research, knowledge work, and search augmentation.
Industry: AI & Machine Learning
Company Size: Medium (51 to 250 employees)
Revenue: USD 50M to 100M
Growth: Scaleup
Valuation: Unicorn (USD 1B+)
Funding: Series D
Headquarters: San Francisco, United States
Founded: 2022
Glassdoor
Glassdoor: 4.6
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