Lead Security Software Engineer, Identity and Access Engineering

  • Chicago, IL, United States
  • 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

As a Security Software Engineer on the Access Engineering team, the services you design and build will protect Block's most valuable assets and provide a great user experience to authorized Block employees around the world. In this role, you will work with many teams across the company, including other teams within security, as well as platform engineering, IT, and Data Security Governance. 

On Access Engineering we strive to provide engineering solutions and access control experiences which balance the practical challenges of compliance with our high bar for security. We believe in the zero trust security model, and are always looking for ways to improve our access control platforms.

You will:

  • Design, develop, and own zero trust authorization platforms for Block's evolving corporate and production landscapes. 

  • Scale your impact through building access control primitives that engineering teams across the company can leverage in their systems to improve their security posture

  • Lead multi-person projects and across engineering teams and stakeholders that reduce access risk 

  • Contribute to our internal web application that enables users across the company to understand and manage their access. 

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

  • Provide mentorship and guidance to level up your teammates. 

  • Work in any Block office location, or work remotely in the USA or Canada


You have:

  • Demonstrated success architecting and building secure systems with broad company impact

  • Demonstrated technical initiative and leadership

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

  • A strong desire to perform and grow as a security engineer and educate other engineers


Even better:

  • Familiarity with authorization technologies such as Open Policy Engine or Zanzibar

  • Experience breaking secure systems

  • Experience with service mesh architectures and/or Envoy


Technologies we use and teach:

  • Ruby, Rails, and RSpec

  • Java 

  • MySQL

  • JavaScript and React

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 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.

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