Sr. Software Engineer, Data Security

  • New York, NY
  • Employees can work remotely
  • Full-time

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

Data Security is core to Block's success. Block strives to make the basics of running a business easy for our sellers so that they can instead focus on building and growing their business. The Data Security Engineering team similarly aims to make it easy for our engineering teams to protect sensitive data throughout its lifecycle so that Block can ship remarkable products. We achieve these goals through developing data security education and policies, preventative guardrails, and secure, convenient tooling. 


As a member of the Data Security Engineering team, you will: 

  • Contribute to the design and development of engineering solutions that support data security initiatives across Block's engineering ecosystem

  • Collaborate with other engineering teams incorporating data security engineering products into their solutions

  • Act as an internal security subject matter expert, advocating for better security practices throughout Block

  • Contribute to the monitoring and stability of our team’s existing engineering solutions

  • Build large scale distributed systems that protect some of the most sensitive data in Block


Some qualifications you may have:

  • 3+ years of software engineering experience

  • Ability to break down complex requirements into smaller, more manageable pieces

  • Excellent technical communication skills

  • A high bar for writing quality, scalable, robust, and testable code

  • Willingness to cut across new or existing services, infrastructure, or frameworks to achieve data security goals


As a bonus, you may have experience or interest in:

  • Designing novel yet robust security architectures and protocols

  • Cryptography, common implementation errors, and safe abstractions

  • Explaining complex technical security concepts clearly

  • PCI security standards (including DSS and PTS)


Technologies we use and teach:

  • Java, Go, Python, Ruby

  • Envoy, Service Mesh, SPIFFE/Spire

  • gRPC, and Protocol Buffers

  • Google’s Tink Cryptographic library

Additional Information

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.


We want you to be well and thrive. Our global benefits package includes:

  • Healthcare coverage
  • Retirement Plans
  • Employee Stock Purchase Program
  • Wellness perks
  • Paid parental leave
  • Paid time off
  • Learning and Development resources

Block, Inc. (NYSE: SQ) is a global technology company with a focus on financial services. Made up of Square, Cash App, Spiral, TIDAL, and TBD54566975, 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. TBD54566975 is building an open developer platform to make it easier to access Bitcoin and other blockchain technologies without having to go through an institution.

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