Senior Security Engineer

Summary

The job is for a Security Engineer position at Cash App, a financial product of Block Inc. The role involves working with the Bitcoin Platform Engineering team to co-design, co-build, and co-own security mechanisms and features for protecting Bitcoin holdings in production and at scale.

Requirements

• 8+ years of experience delivering quality software
• Experience writing security sensitive code or using cryptographic libraries
• Familiarity with security protocols or protocol implementation
• Experience with embedded systems, embedded C, firmware development or embedded security
• Experience with Secure Enclaves, TrustZone, SGX, AWS Nitro enclaves, HSMs, nCipher HSMs or Codesafe
• Experience building security-sensitive applications in AWS

Responsibilities

• Co-design, co-build, and co-own the security mechanisms and features that we use to protect the entire lifecycle of our Bitcoin holdings in production and at scale
• Co-design, co-build, and co-own security mechanisms and features in our bitcoin platform production services, written in Kotlin and running on AWS

Preferred Qualifications

• A strong motivation to contribute to a meaningful product that will fundamentally change the way people interact with financial institutions
• Strong desire to perform and grow as a security engineer, and mentor other engineers

Benefits

• Healthcare coverage (Medical, Vision and Dental insurance)
• Health Savings Account and Flexible Spending Account
• Retirement Plans including company match
• Employee Stock Purchase Program
• Wellness programs, including access to mental health, 1:1 financial planners, and a monthly wellness allowance
• Paid parental and caregiving leave
• Paid time off (including 12 paid holidays)
• Paid sick leave (1 hour per 26 hours worked (max 80 hours per calendar year to the extent legally permissible) for non-exempt employees and covered by our Flexible Time Off policy for exempt employees)
• Learning and Development resources
• Paid Life insurance, AD&D, and disability benefits