Senior Security Engineer, Detection & Response

The Role

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.
• Mentor responders and participate in the incident response on-call rotation.

You Have

• 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. You can analyze large, messy datasets and build reliable tools that improve investigations and response, both with and without AI.
• 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.

Additional information

We encourage applicants to share any needed accommodations with their recruiter, who will treat these requests as confidentially as possible. Want to learn more about what we're doing to build a workplace that is fair and square? Check out our I+D page.

While there is no specific deadline to apply for this role, U.S. roles are typically open for an average of 55 days before being filled by a successful candidate. Please refer to the date listed at the top of this job page for when this role was first posted.

Pay and benefits

Block takes a market-based approach to pay, and pay may vary depending on your location. U.S. locations are categorized into one of four zones based on a cost of labor index for that geographic area. The successful candidate's starting pay will be determined based on job-related skills, experience, qualifications, work location, and market conditions. These ranges may be modified in the future.

To find a location's zone designation, please refer to this resource. If a location of interest is not listed, please speak with a recruiter for additional information.

• Zone A: $217,800 - $326,800 USD
• Zone B: $207,000 - $310,400 USD
• Zone C: $196,100 - $294,100 USD
• Zone D: $185,200 - $277,800 USD
• Application Guidelines

Candidates may submit up to 9 active applications within a 60-day period. Reapplications to the same role are accepted 90 days after a previous application has been reviewed.

Use of AI in Our Hiring Process

We may use automated AI tools to evaluate job applications for efficiency and consistency. These tools comply with local regulations, including bias audits, and we handle all personal data in accordance with state and local privacy laws.

Contact us here with hiring practice or data usage questions.

Every benefit we offer is designed with one goal

• empowering you to do the best work of your career while building the life you want.
• Remote work, medical insurance, flexible time off, retirement savings plans, and modern family planning are just some of our offering.
• Check out our other benefits at Block.

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