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[Remote] Member of Technical Staff (Software Engineer, Applied AI)

Remote Full-time Live

Note: The job is a remote job and is open to candidates in USA. Perplexity is looking for an Applied AI Engineer to design, build, and iterate on cutting-edge agents powering their core experience in Perplexity Computer. In this role, you will apply state-of-the-art ML and LLM techniques to develop applications that enhance user experience and drive product improvements.

Responsibilities

  • Apply state-of-the-art ML and LLM techniques to solve problems spanning:
  • Personalization (LLM memory, context summarization, retrieval and ranking)
  • Contextual recommendations and Monetization applications
  • Build frontier agent capabilities on top of Perplexity Computer
  • Build auto research harness for both offline and online techniques, designing experiments and metrics that provide deep insight into quality and impact
  • Own the entire model lifecycle from research to production: data analysis, modeling, evaluation, offline/online A/B testing, and iterative improvement and build autonomous harness for agent squad to explore different problem spaces
  • Collaborate cross-functionally with engineers, PMs, data scientists, and designers to ensure our AI drives meaningful product improvements
  • Stay at the forefront of ML/AI innovation by evaluating and incorporating emerging research and algorithms into the product lifecycle

Skills

  • Apply state-of-the-art ML and LLM techniques to solve problems spanning: Personalization (LLM memory, context summarization, retrieval and ranking); Contextual recommendations and Monetization applications; Build frontier agent capabilities on top of Perplexity Computer
  • Build auto research harness for both offline and online techniques, designing experiments and metrics that provide deep insight into quality and impact
  • Own the entire model lifecycle from research to production: data analysis, modeling, evaluation, offline/online A/B testing, and iterative improvement and build autonomous harness for agent squad to explore different problem spaces
  • Collaborate cross-functionally with engineers, PMs, data scientists, and designers to ensure our AI drives meaningful product improvements
  • Stay at the forefront of ML/AI innovation by evaluating and incorporating emerging research and algorithms into the product lifecycle
  • 5+ years experience building and shipping robust AI products for large-scale, user-facing or data-driven products
  • Strong software engineering skills (Python, production-quality codebases, collaborative development) and experience using agentic coding tools for large scale parallel developments
  • In-depth experience with the full AI lifecycle: data analysis, rigorous evaluation, and ongoing monitoring/improvement
  • Proven collaborator and communicator; excels in high-velocity, cross-functional teams
  • Curious, driven by end-user/product impact, and passionate about advancing the state of applied ML and AI
  • BS, MS, or PhD in Computer Science, Engineering, or related field (or equivalent experience)
  • Experience with LLM context engineering or harness engineering
  • Experience in mid-training or post-training frontier open source models
  • Experience in large scale user-centric and content-centric personalization challenges (user modeling, retrieval, content ranking, etc)

Company Overview

  • Perplexity is an AI-powered platform that retrieves, analyzes information from the web to deliver structured answers with cited sources. It was founded in 2022, and is headquartered in San Francisco, California, USA, with a workforce of 201-500 employees. Its website is https://www.perplexity.ai.
  • Company H1B Sponsorship

  • Perplexity has a track record of offering H1B sponsorships, with 3 in 2026, 12 in 2025, 7 in 2024, 2 in 2023. Please note that this does not guarantee sponsorship for this specific role.
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