Senior Site Reliability Engineer

Block is seeking a Senior Site Reliability Engineer to join their SRE team. The role will involve improving the reliability of Block's platform and critical infrastructure, leveraging AI-driven tooling and automation to enhance observability, and participating in primary platform oncall. The ideal candidate will have a drive to root cause systems with many moving parts, technical initiative and leadership, and a mindset that naturally reaches for AI to accelerate problem-solving and reduce toil.

Requirements

• Build and extend platforms to improve system reliability
• Work on team goals that encompass reliability for the entire company
• Standardize reliability tools across multiple platforms and organizations
• Triage, coordinate, and lead stabilization of sev 0–1 incidents
• Serve as primary oncall, maintaining structured escalation paths and exercising leadership escalation
• Drive platform-wide reliability improvements, shared operational tooling, and deploy-safety patterns
• Use AI-driven systems to improve signal detection, reduce noise, and accelerate root cause analysis
• Design and implement safe deployment patterns (progressive delivery, automated rollback, guardrails)

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