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Principal Security EngineerBlock · Bay Area, CA, United States of America
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Block

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Principal Security Engineer

🗓️ Posted 2026-07-20 Bay Area, CA, United States of America Hybrid ICT
💰 Salary Not shared 📊 Market 18,333 CAD–29,167 CAD/mo

About the Company

Block is one company built from many blocks, all united by the same purpose of economic empowerment. The blocks that form our foundational teams - People, Finance, Counsel, Hardware, Information Security, Platform Infrastructure Engineering, and more - provide support and guidance at the corporate level.

Responsibilities

  • ● Deliver world-class and innovative software solutions to security problems, tackling Block's top risks such as technology fragmentation and security after-the-fact.
  • ● Define the multi-year technical strategy for software security at Block, guiding architectural decisions and ensuring alignment with engineering best practices.
  • ● Identify and lead the development and implementation of common, high-leverage security solutions and infrastructure across Block's business units to combat data sprawl and overpermissioning.
  • ● Drive engineering excellence, specifically around security, for critical systems like tokenization platforms, ensuring integrity, performance, and scalability.
  • ● Spearhead the security strategy and engineering excellence for mobile software and platforms across Block's product ecosystem.
  • ● Champion security reliability engineering practices to improve the overall resilience and availability of security services and infrastructure.
  • ● Lead technical planning and implementation for high-priority security initiatives, acting as a technical decision maker/tie-breaker and upholding high technical standards.
  • ● Partner with engineering leaders to integrate security practices early into the development lifecycle and provide security architecture review and threat modeling for critical systems.
  • ● Foster technical excellence within InfoSec and mentor engineers on technical execution, system design, and technology choices, driving knowledge sharing and documentation.

Requirements

  • ● You have a track record of exemplary technical leadership and decision-making at a Principal or equivalent level.
  • ● You have 10+ years of experience developing and shipping production software and critical services.