Detection & Response Engineer, Perplexity AI
$250-350k
Conversational AI-powered search tool
Job no longer available
Conversational AI-powered search tool
1001+ employees
Job no longer available
$250-350k
1001+ employees
Company mission
To advance the way people discover and share information.
Role
Who you are
- 4+ years of experience in Security Operations, Detection & Response, Incident Response, or similar roles
- Strong knowledge of detection engineering, response automation, and SIEM/SOAR toolchains
- Experience designing or managing monitoring infrastructure for endpoints, cloud, and SaaS environments
- Familiarity with adversary TTPs, threat intelligence, and modern attacker methods
- Proficiency in scripting languages (Python, Bash, PowerShell, etc.) for automation
- Experience with cloud infrastructure platforms (preferably AWS, Azure)
- Ability to independently run investigations, manage projects, and prioritize efforts for risk reduction
- Bonus: Experience collaborating on cutting-edge AI research or using AI to improve detection and response
What the job involves
- Perplexity is seeking a highly skilled, experienced and hands-on Detection & Response Security Engineer to join our dynamic security team, revolutionizing the way people search and interact with the internet
- You’ll build, operate, and evolve detection and response systems, tools, and processes that provide deep visibility and rapid response capabilities, enabling innovation while keeping our users and business secure at scale
- Design and implement scalable detection and response solutions that integrate directly into engineering and IT workflows
- Lead threat detection projects, investigation workflows, and technical incident response for security events
- Build and maintain infrastructure and tools for detection rule lifecycle management and continuous improvement
- Develop, measure, and tune detection rules for effective and sustainable operations across our environment (cloud, endpoints, SaaS, AWS, macOS, Windows, etc.)
- Automate manual response processes and containment actions for security incidents
- Ensure deep visibility and control over identity, endpoints, productivity suites, and cloud resources
- Collaborate with engineering, IT, and product teams to investigate, remediate, and drive incident postmortems
- Drive improvements in IAM, device management, and cloud usage securely
- Stay current on adversary tactics, techniques, and procedures; drive ongoing maturity of our detection and response program
- Work with external partners (pen testing firms, bug bounty researchers) to rapidly detect and respond to new vulnerabilities and threats
Our take
As AI continues to drive changes in both business operations and day-to-day lives, Perplexity AI delivers an intelligent search engine powered by conversational AI, to improve search outcomes and "unlock the power of knowledge" for all.
Reaching impressive heights of 22M monthly visits, Perplexity's "ask anything" method of search is clearly a popular one. And what sets it apart from other search engines is in its answers, which are concise and fully cited, responding to the user query rather than simply providing a place in which they can scroll to find it themselves.
The company has raised substantial funding, with contributions from former execs at companies like OpenAI, Meta, and Quora, demonstrating the interest that it has drummed up in the space. Having doubled its annual recurring revenue between 2023 and 24, this investment will allow Perplexity AI to continue building out its product, and accelerate growth into the future.
Kirsty
Company Specialist at Welcome to the Jungle
Insights
Company
Funding (last 2 of 9 rounds)
Sep 2025
$200m
LATE VC
Jul 2025
$100m
LATE VC
Total funding: $1.7bn
Company HQ
Financial District, San Francisco, CA
Leadership
Aravind Srinivas
(Co-Founder, President & CEO)Former Research Scientist at OpenAI, who has interned in Research at Google and Deep Mind. Obtained a PhD in Computer Science from the University of California, Berkeley.
Denis Yarats
(Co-Founder & CTO)Prior to co-founding Perplexity in 2022, Denis was an AI Research Scientist at Facebook AI Research, a Staff ML Engineer at Quora, and a Software Development Engineer at Microsoft.
Johnny Ho
(Co-Founder & CSO)Previously a Quantitative Trader at Tower Research Capital, and Engineer at Quora.
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