Web infrastructure for AI to search, extract, monitor, and reason over the world's information. Backed by Index, Khosla and Kleiner Perkins.
About the role
You will build and operate the security systems that let Parallel ship quickly without creating avoidable risk. You will work across application security, secure defaults, AI-assisted security tooling, and the unique attack surface of agentic systems that consume untrusted web content. You will fix real vulnerabilities when they appear, then change the underlying systems so the same class of issue is harder to introduce again.
What they're looking for
- Significant software engineering experience, including several years focused on product or application security
- Strong experience with web and API security, including authentication, authorization, SSRF, IDOR, injection, and multi-tenant isolation
- Built frameworks, libraries, or secure defaults that reduced entire classes of vulnerabilities across a codebase or engineering organization
- Experience building security tooling using current AI models, such as automated code review, threat modeling, triage, agent harnesses, or evaluation systems
- Experience securing systems that process untrusted inputs, especially LLM or agentic systems
- Ability to work independently as the primary security owner and make clear prioritization decisions
More about this role
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.
You will build and operate the security systems that let Parallel ship quickly without creating avoidable risk. You will work across application security, secure defaults, AI-assisted security tooling, and the unique attack surface of agentic systems that consume untrusted web content. You will fix real vulnerabilities when they appear, then change the underlying systems so the same class of issue is harder to introduce again.
You will also help define how security fits into the development process: building reusable patterns for authentication, authorization, data handling, and outbound access, designing controls for enterprise...
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