People Matter

Senior Security Incident Response Engineer



United States · California, USA · Remote
Posted on Thursday, June 27, 2024

Company Description

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. They work across business groups and around the globe, spanning time zones and disciplines to develop inclusive People policies, forecast finances, give legal counsel, safeguard systems, nurture new initiatives, and more. Every challenge creates possibilities, and we need different perspectives to see them all. Bring yours to Block.

Job Description

At Block, security is a collective responsibility. The mission of our Information Security team is to protect Block, our employees, and our customers while enabling rapid, secure innovation. The Detection and Response Team (DART) is critical in achieving this mission, encompassing five specialized teams: Threat Intelligence and Operations (TIO), Monitoring & Triage (M&T), Signals and Intelligence (SIGINT), Privacy Incident Response Team (PIRT), and Computer Security Incident Response Team (CSIRT).

The CSIRT is dedicated to providing immediate, effective responses to incidents involving information security or privacy within our ecosystem. Specializing in minimizing damage, preserving evidence, facilitating swift recovery, and advising on preventive measures, CSIRT/PIRT is crucial in maintaining the security and privacy of our information systems.

We are seeking a Senior Security Incident Response Engineer who is passionate about making a broad impact, solving complex problems, and collaborating to enhance our security posture.

As a Senior Security Incident Response Engineer you will:

  • Lead the response to critical security and privacy incidents, threats, and vulnerabilities, coordinating cross-functional teams to resolution.
  • Demonstrate strong composure (Incident Command) while managing incidents with a balance of urgency, intensity, and focus.
  • Actively monitor, analyze, and correlate activities, evaluate security events, conduct research, and provide in-depth incident analysis.
  • Improve and automate internal capabilities for identifying, investigating, and responding to security events.
  • Contribute to the creation and refinement of incident response runbooks.
  • Lead and participate in incident response tabletop exercises to validate processes, document lessons learned, and enhance procedures.
  • Develop and adjust automations, scripts, and security tool configurations to drive efficiencies and enhance investigations.
  • Hunt for malicious activity and provide feedback to the threat intelligence and signal development teams.
  • Communicate incident details clearly and concisely to key stakeholders, both technical and non-technical, in written and verbal forms.
  • Create After Action Review (AAR) reports and lead AAR discussions.
  • Participate in an on-call rotation.


You have:

  • 6+ years of experience with incident response and forensics tools.
  • Strong security knowledge in at least one of the following domains: AWS, Google Cloud Platform, Linux, macOS, or Windows.
  • 3-5 years of experience with malware analysis, host/network-based forensics, memory forensics, and/or network traffic analysis.
  • Proficiency in using the MITRE ATT&CK framework to enhance security incident detection and response.
  • Proficient with leading security investigations with privacy implications (e.g. GDPR, SEC, FDIC, EU or AU reporting) or other strict data protection laws.
  • Scripting experience (e.g., Ruby, Python, shell scripting) preferred.
  • Experience with open-source forensics tools like OSQuery or YARA.
  • Empathy, patience, a desire to learn, and a commitment to helping your teammates grow.
  • Excellent written and verbal communication skills, with the ability to clearly and effectively convey technical concepts.
  • Ability to operate both independently and as part of a geographically dispersed team.

Additional Information

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.

Zone A: USD $198,000 - USD $297,000
Zone B: USD $188,100 - USD $282,100
Zone C: USD $178,200 - USD $267,400
Zone D: USD $168,300 - USD $252,500

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.

Full-time employee benefits include the following:

  • 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

These benefits are further detailed in Block's policies. This role is also eligible to participate in Block's equity plan subject to the terms of the applicable plans and policies, and may be eligible for a sign-on bonus. Sales roles may be eligible to participate in a commission plan subject to the terms of the applicable plans and policies. Pay and benefits are subject to change at any time, consistent with the terms of any applicable compensation or benefit plans.

US and Canada EEOC Statement

We’re working to build a more inclusive economy where our customers have equal access to opportunity, and we strive to live by these same values in building our workplace. Block is a proud equal opportunity employer. We work hard to evaluate all employees and job applicants consistently, without regard to race, color, religion, gender, national origin, age, disability, pregnancy, gender expression or identity, sexual orientation, citizenship, or any other legally protected class.

We believe in being fair, and are committed to an inclusive interview experience, including providing reasonable accommodations to disabled applicants throughout the recruitment process. 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.

Additionally, we consider qualified applicants with criminal histories for employment on our team, and always assess candidates on an individualized basis.

Block, Inc. (NYSE: SQ) is a global technology company with a focus on financial services. Made up of Square, Cash App, Spiral, TIDAL, and TBD, we build tools to help more people access the economy. Square helps sellers run and grow their businesses with its integrated ecosystem of commerce solutions, business software, and banking services. With Cash App, anyone can easily send, spend, or invest their money in stocks or Bitcoin. Spiral (formerly Square Crypto) builds and funds free, open-source Bitcoin projects. Artists use TIDAL to help them succeed as entrepreneurs and connect more deeply with fans. TBD is building an open developer platform to make it easier to access Bitcoin and other blockchain technologies without having to go through an institution.

While there is no specific deadline to apply for this role, on average, U.S. open roles are posted for 70 days before being filled by a successful candidate.