Senior Security Engineer, Security Engineering & Operations

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.

The Security Engineering & Operations team (SecEngOps) within Infrastructure Security help other teams across InfoSec, Compliance and Partner Product teams to protect Block systems, users & customers; encouraging our employees to behave securely; identifying security threats; and responding to incidents. Our customers expect us to protect their data and assets. As Block grows and expands, cyber security will play an increasingly important role in preventing disruption and protecting our reputation. The team is composed of software engineers, who are not only focused and passionate about designing, implementing and maintaining software and services but also monitoring and improving their operational posture - SLA / SLO for uptime, service reliability, performance and deployment automation.

• Design and build scalable, cloud-native security data pipelines and detection systems — leveraging SIEM platforms, event-driven architectures, and large-scale log processing to stay ahead of real-world threats
• Collaborate with the team to strengthen our security posture — through detection engineering reviews, threat scenario design, and contributing to Kubernetes and cloud-native security controls
• Participate in our on-call rotation to ensure rapid response and continuous protection for our platform and customers when it matters most

• 5+ years of industry experience as a programer, developer, SWE, or similar job roles
• A strong interest in security and growing your career in the direction of InfoSec (prior experience in InfoSec not required)
• Comfortable working with outside teams to address problems and determine priorities
• Experience using cloud-native technologies for data processing
• Experience working in or with SRE or security detection and response teams

• Google Cloud Platform products such as Pub/Sub, Dataflow, BigQuery, Cloud Functions, and Google Kubernetes Engine 
• Amazon Web Services products such as Cloudtrail, Simple Queue Service, Simple Notification Service, and Lambda 
• Programming Languages: Ruby, Go, Java

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 an equal opportunity employer evaluating all employees and job applicants without regard to identity or any legally protected class. We will consider qualified applicants with arrest or conviction records for employment in accordance with state and local laws and “fair chance” ordinances.

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.

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.

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.

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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.

Block, Inc. (NYSE: XYZ) builds technology to increase access to the global economy. Each of our brands unlocks different aspects of the economy for more people. Square makes commerce and financial services accessible to sellers. Cash App is the easy way to spend, send, and store money. Afterpay is transforming the way customers manage their spending over time. TIDAL is a music platform that empowers artists to thrive as entrepreneurs. Bitkey is a simple self-custody wallet built for bitcoin. Proto is a suite of bitcoin mining products and services. Together, we’re helping build a financial system that is open to everyone.

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