Member of Technical Staff (Software Engineer, AI Systems)

Perplexity AI

$130K — $160K *
Consumer Technology
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • 2+ years of experience in building and maintaining large-scale AI systems.
  • Strong software engineering skills with a focus on developer experience.
  • Proficiency in Python; familiarity with Rust and cloud services is a plus.
  • Degree in Computer Science, Engineering, or related field, or equivalent experience.
  • Expertise in crafting systems that can adapt to the evolving AI landscape.

Responsibilities

  • Develop and enhance the core agent harness for the flagship answer experience.
  • Translate user needs into actionable improvements for the agent’s performance and reliability.
  • Implement observability and evaluation practices for scalable agents.
  • Optimize context management and orchestration within the agent framework.
  • Facilitate a feedback loop between production use and model improvements.

Benefits

  • Opportunity to work on cutting-edge AI technologies.
  • Collaborative and innovative work environment.
  • Focus on meaningful challenges that impact society.
  • Seasoned team members for knowledge sharing and mentorship.
  • Flexible working arrangements to support work-life balance.
Full Job Description
About the Role

Perplexity is looking for a software engineer to evolve the core agent harness that powers our flagship answer experience.

You will combine strong product judgment with both single- and multi-agent engineering paradigms to help us build the world's foremost agent for accumulating knowledge and answering our 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 that is central to Perplexity's mission.

Required Qualifications
  • 2+ years of experience 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 that can evolve along with a rapidly advancing AI landscape.
  • Proficiency with Python. Bonus if familiar with Rust and cloud infrastructure (AWS, Kubernetes).
  • BS, MS, or PhD in Computer Science, Engineering, or related fields (or equivalent experience).

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