Member of Technical Staff - Cybersecurity Products Software Engineer

About the role

Perplexity is building cybersecurity products where agents do the security work, not just assist with it. Its security team already runs agents daily across vulnerability finding, defense testing, cloud security and threat response, and now wants to turn that work into products for customers spanning application security, offensive testing, cloud security, detection and response and more. The role is a hands-on Software Engineer who builds these products end to end, from security logic and agent workflows to integrations and product surfaces used by customers.

Key responsibilities

• Build security products from zero to one across application security, penetration testing, cloud security and detection and response.
• Build agents that review code and find vulnerabilities, test applications and infrastructure like an attacker, assess cloud configurations and investigate threats, then validate findings and recommend or apply fixes.
• Build the underlying systems: multi-tenant services, data pipelines and secure execution environments running against customer code, cloud accounts and telemetry.
• Integrate with tools customers already use: source control, CI/CD, cloud providers, identity providers, security tools, ticketing and chat.
• Ship product surfaces customers use: APIs, dashboards, onboarding and workflows.
• Ensure strong tenant isolation, least privilege, safe handling of customer secrets and data, and tight controls on agents acting in customer environments.
• Define quality metrics (finding accuracy, false positive rate, exploitability, time to fix, cost) and use them to drive improvements.
• Work with design partners and customers to decide which security problems to build products for next.

Required profile

• 4+ years of experience as a software engineer building production systems, with meaningful time on security products, security data platforms or security engineering with heavy software development.
• Experience owning production services end to end.
• Hands-on depth in at least one security domain (application security, penetration testing, cloud security or detection and response).
• Experience integrating with security- or developer-relevant systems such as source control, CI/CD, cloud provider APIs, identity providers, scanners or SIEMs.
• Comfortable working directly with customers and shipping pragmatic improvements quickly in an early-stage product area.
• Bonus: experience building LLM-powered agents, evaluation frameworks or tool-using automation; bonus: experience at a security product company or on an internal security platform at scale.

Required skills

• Proficiency in at least one major language such as Python, Go, TypeScript or Rust.
• Familiarity with cloud infrastructure (AWS preferred) and building secure, multi-tenant SaaS.

Compensation range: $220K - $405K.