Senior Security Engineer, Cloud Kubernetes

  • San Francisco, CA
  • Employees can work remotely
  • Full-time

Company Description

Square builds common business tools in unconventional ways so more people can start, run, and grow their businesses. When Square started, it was difficult and expensive (or just plain impossible) for some businesses to take credit cards. Square made credit card payments possible for all by turning a mobile phone into a credit card reader. Since then Square has been building an entire business toolkit of both hardware and software products including Square Capital, Square Terminal, Square Payroll, and more. We’re working to find new and better ways to help businesses succeed on their own terms—and we’re looking for people like you to help shape tomorrow at Square.

Job Description

Square's Information Security culture is focused on allowing our engineering teams to build secure products. We achieve this by building, and deploying state-of-the-art security alongside our product and infrastructure teams.

As a Senior Security Engineer, Cloud Kubernetes, you will harden Square's Kubernetes environments. Square is in the early days of migrating existing on-prem services to the cloud. Your work will shape the way we use Kubernetes for years to come.

We're looking for someone with both a broad knowledge of security and systems, and a deep knowledge of containers and Kubernetes. Real-world production Kubernetes experience is a must-have for this job. You will have other experience across a range of technical disciplines and may have had past jobs such as Information Security (Hardening, Detection/Response, Blue Team) and systems (SRE, SysAdmin, Network Engineer).

You will:​​​​​​

  • Develop the security components of Kubernetes in multiple environments (AWS EKS, GCP GKE, possibly on-prem).
  • Build security automation for cloud environments.
  • Work with the infrastructure and product teams who are moving to the cloud, and ensure that they have secure-by-default systems.


Desired Background:

  • 5+ years total experience in tech.
  • You work well across teams and with audiences who may not have a security background.
  • Kubernetes experience
    • At least 1 year of Kubernetes experience. This work experience should be at least 75% of your time focused on Kubernetes., including work securing production resources.
    • Experience implementing Kubernetes security and hardening.
    • Experience with at least one: AWS EKS or GCP GKE.
  • Security experience
    • At least 2 years experience working in security.
    • Expertise in cloud automation tools such as Terraform, CloudFormation, Ansible, etc.
    • Experience writing code to solve security issues. This could be writing security tools, or automation/management of security-sensitive environments.
    • Experience securing Linux systems - hardening, logging/detection, general systems design. Emphasis on container security.
    • Networking knowledge, including network security and segmentation.

Even better:

  • Experience in Python and/or Ruby.
  • Experience in both AWS and GCP.

Additional Information

At Square, we value diversity and always treat all employees and job applicants based on merit, qualifications, competence, and talent. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. We will consider for employment qualified applicants with criminal histories in a manner consistent with the requirements of the San Francisco Fair Chance Ordinance. Applicants in need of special assistance or accommodation during the interview process or in accessing our website may contact us by sending an email to assistance(at) We will treat your request as confidentially as possible. In your email, please include your name and preferred method of contact, and we will respond as soon as possible.


At Square, 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
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