Senior Product Security Engineer

Why Join Doppel

Doppel is building the future of social engineering defense. Our AI-native platform uses agentic AI to protect executives, employees, customers, and brands from phishing, impersonation, fraud, and other AI-powered threats across digital channels. We help some of the world’s most recognized brands detect and dismantle attacker infrastructure while strengthening employee resilience through threat-informed training and simulation. By unifying Digital Risk Protection, Human Risk Management and Email Security, Doppel connects threats into a real-time intelligence graph to power faster disruption, smarter defense, and modern security awareness at scale.

Backed by leading investors including Andreessen Horowitz and Bessemer Venture Partners, and trusted by leading enterprises, Doppel is a rapidly growing Series C startup building the future of social engineering defense. Our team combines deep cybersecurity expertise, operational rigor, and startup velocity to solve some of the internet’s most urgent trust and safety challenges.

The Role

At Doppel, we focus on building a culture where people feel respected, supported, and trusted to do meaningful work. We value clarity, collaboration, and solving real problems for our customers and teammates.

We’re looking for a Product Security Engineer to support and scale our product and cloud security efforts by embedding security into engineering workflows and serving as a subject matter expert on all things security. The candidate will partner closely with engineering teams to conduct architecture reviews, design secure solutions to complex problems, improve and maintain our tooling (both first and third-party) and guardrails, and help design a well-rounded security program in a world where code gets written by AI and velocity is ever increasing. In addition to hands-on execution, the role emphasizes enablement providing guidance, documentation, and mentorship to engineers, along with clear communication and reporting to security leadership.

This role is open remotely across the U.S. and Canada, or hybrid from our New York, San Francisco, or Toronto office.

What You Will Do

• Partner with product and engineering teams on architecture reviews, threat modeling, and secure design, translating complex security risks into practical recommendations and clear tradeoffs.

• Evaluate and roll out AI-assisted and agentic security workflows to increase security coverage and accelerate reviews, triage, and remediation, with appropriate validation and human oversight.

• Improve and maintain our first- and third-party security tooling, including our in-house ASPM platform, to reduce noise, improve prioritization, and make findings easier for engineering teams to act on.

• Strengthen security controls throughout the SDLC and CI/CD pipeline, including code and dependency scanning, software supply chain protections, and safeguards for AI-assisted development, without introducing unnecessary friction.