Senior Application Security Engineer II

Relay is a digital banking platform that gives self-made business owners the tools and know-how to be great with money—bringing clarity, confidence, and control to every dollar earned, so they can turn hard work into lasting success. We do this by replacing financial guesswork with real visibility, transforming cash flow from a constant source of stress into a clear signal owners can use to run stronger, more resilient businesses.

We’re looking for an Senior Application Security Engineer II who thrives on autonomy, curiosity, and impact. You'll join an Application Security team that is deliberately moving away from the advisory model most AppSec functions are stuck in. You’ll work across our stack (from TypeScript and Node.js, to Postgres and AWS cloud infrastructure) ensuring our applications are secure from design to deployment. You’ll blend technical depth with systems thinking, working across teams to identify risks, build guardrails, and evolve our security practices as Relay scales.

Your mission is to own at least one AppSec process end to end, guide developers on how to solve challenging security problems and adapt traditional security solutions to the new AI landscape.

This is a role with room to grow. You'll be working next to senior engineers who are maintaining our auth system and building our DAST tooling from scr