Founding Engineer

Multifactor is redefining zero-trust identity security for the AI era. They are seeking a Founding Engineer to work alongside the founder to build the company's platform from the ground up, shaping the technical foundation and writing core infrastructure for secure systems.

Responsibilities:

• Ship production code daily across Multifactor’s full product surface — backend services, APIs, browser extensions, and client applications
• Own entire features end-to-end. Take a problem (sometimes from a research paper, sometimes from a customer call) and turn it into production software. You’ll have the autonomy to shape what gets built and how
• Work directly with the founder (CEO) to translate research breakthroughs into production-grade software, making architecture, threat modeling, and product decisions together. The feedback loop is measured in hours, not sprints
• Build the security layer for the agentic web. Design and implement systems that prevent prompt injection, credential theft, confused-deputy attacks, and cross-agent hijacking — problems most companies haven’t even started thinking about
• Lay the engineering foundation. Your code, your tooling choices, your patterns for CI/CD, testing, and incident response will shape how this team operates for years. That’s a rare opportunity to define an engineering culture from scratch around a mission that matters