Principal Security Engineer

Track record of exemplary technical leadership and decision-making at a Principal or equivalent level (L8+ technical capabilities preferred).

10+ years of experience developing and shipping production software and critical services, with a minimum of 5 years focused on establishing and scaling security practices in a large, modern technology environment.

Deep technical understanding of security vulnerabilities, risks, countermeasures, and compensating controls, particularly in high-volume, real-time transaction processing environments.

Demonstrable ability to write production-quality code/script for security automation and tooling.

Experience leading and driving significant technical initiatives across multiple team, organizational and product boundaries.

Experience in the financial technology, payments, or cryptocurrency/bitcoin domain, reflecting Block's unique security characteristics.

As a Principal Security Engineer focused on Software Security Engineering at Block, you will be a technical leader reporting to the CISO responsible for setting the bar for security excellence and driving the creation of innovative, world-class software solutions to complex security problems.

You will work across Engineering and Information Security (InfoSec) to champion a "Secure by Design" culture, directly influencing the architecture of Block's core products and infrastructure.

Your mandate is to provide deep technical expertise and strategic direction to ensure that security is enabling fast, secure innovation across the business.