[Hiring] Senior Security Engineer, Detection & Response @Block

Role Description

Block’s Detection and Response Team (DART) investigates and responds to threats across our products and systems. Within DART, the Computer Security Incident Response Team (CSIRT) leads complex investigations and coordinates the response to security incidents across the company. You’ll establish what happened, determine the scope and impact, guide containment and recovery, and keep responders and stakeholders aligned.

You’ll be a trusted resource for your peers, contributing technical judgment and direction to complex investigations and helping the team make sound decisions. You’ll partner closely with engineers, other security teams, Legal, Privacy, and business leaders. Between incidents, you’ll innovate by building the tools, workflows, and procedures that make our response stronger.

You Will:

• Command complex, high-impact security incidents from initial assessment through containment, recovery, and closure.
• Investigate threats across endpoint, identity, cloud, SaaS, network, and application systems and drive containment and remediation with system owners, weighing urgency, evidence preservation, and business impact.
• Reconstruct timelines, preserve evidence, and determine the scope and impact of incidents.
• Coordinate containment and remediation with system owners while balancing urgency and business impact.
• Keep incident priorities, decisions, owners, and handoffs clear across teams and time zones.
• Lead post-incident reviews and drive findings, uncertainty, and response decisions to technical teams and business partners.
• Write code, queries, and automation that accelerate evidence collection, analysis, and response. Partner with triage, detection, threat intelligence, and infrastructure teams to address missing telemetry, improve detections, and remove recurring manual work.
• Lead post-incident reviews and drive improvements to completion.
• Mentor responders and participate in the incident response on-call rotation.

Qualifications

• 6+ years of hands-on incident response and digital forensics experience.
• Experience commanding major security incidents involving multiple teams and competing priorities.
• Strong knowledge of attacker behavior and depth in several areas of identity, endpoint, cloud, network, or application security.
• Strong SQL/database understanding and log-analysis skills, and practical programming or scripting ability, such as Python.
• An established AI-assisted workflow and actively develop AI-based systems and processes that improve incident coordination and case management.
• Clear communication and sound judgment when working with technical teams, executives, and sensitive information.
• An engineering mindset and a track record of turning incident response lessons into lasting improvements.
• A need to build: developing systems and workflows that improve incident response and connect with our broader investigation, automation, and case management capabilities.

Benefits

• Remote work
• Medical insurance
• Flexible time off
• Retirement savings plans
• Modern family planning