Founding Engineer at Multifactor

We’re hiring our first Founding Engineer — someone who will work alongside the founder to build Multifactor’s platform from the ground up and shape the technical foundation of the company. This is not an “early employee” role where you slot into an existing codebase and pick up tickets. You’ll be writing core infrastructure for systems that must be correct-by-construction, making architectural decisions that the next 10+ engineers will inherit, and turning peer-reviewed cryptographic research into production software that enterprises and consumers trust with their most sensitive accounts. Few roles offer this much leverage over a product that could secure millions of accounts across the agentic web. 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