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Senior Security Engineer (Application & AI Agent Security)

San Francisco Bay Area
Visa Sponsorship
This Job is No Longer Active This position is no longer accepting applications
AI Summary

Design and implement security systems to protect Parallel’s AI agent infrastructure while enabling rapid, risk-aware product development. Define secure defaults, frameworks, and tooling for authentication, authorization, and multi-tenant isolation, ensuring security is embedded in the development lifecycle. Own vulnerability mitigation, secure defaults, and AI-assisted security tooling for agentic systems consuming untrusted web content.

Key Highlights
Build and operate security systems for AI agent infrastructure with untrusted web content access
Define secure defaults, frameworks, and tooling for authentication, authorization, and multi-tenant isolation
Embed security into the development process, not as an afterthought
Key Responsibilities
Design and implement security systems for AI agent infrastructure handling untrusted web content
Develop secure defaults, frameworks, and tooling for authentication, authorization, and multi-tenant isolation
Embed security reviews into the development lifecycle rather than treating it as a post-development step
Fix vulnerabilities when discovered and redesign systems to prevent recurrence of vulnerability classes
Collaborate with engineers and customers to prioritize high-leverage security improvements
Build AI-assisted security tooling for automated code review, threat modeling, and vulnerability triage

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Technical Skills Required
Application Security Web & API Security Python
Benefits & Perks
Competitive salary ($150K - $300K)
Generous equity
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Nice to Have
Experience with GCP and Kubernetes
Security research background
Open-source security tooling contributions
Conference talks or public security research publications
Experience with TypeScript or Go
Experience securing LLM or agentic systems

Job Description

Parallel is a web infrastructure company. Our products are used by leading businesses in sales, marketing, insurance, and coding to build best-in-class AI agents with flexible and powerful programmatic access to the web.We've raised $230 million from Kleiner Perkins, Sequoia, Index Ventures, Spark Capital, Khosla Ventures, First Round, and Terrain to build the web for AIs. We're currently valued at $2 billion and we're forming a world-class team of engineers, designers, marketers, sellers, researchers, and operational experts to achieve our mission.
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Job Overview
Posted Sep 17, 2026
Employment Full-time
Experience Not Applicable
Location San Francisco Bay Area
Category Cyber Security
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