CSIRT Signals Developer and Data Scientist

  • San Francisco, CA, USA
  • Employees can work remotely
  • Full-time
  • Position open to remote: Yes

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

The Square Security team works to ensure the security of every transaction from dip to receipt and beyond. We strive to provide a secure environment that allows Square to build world-class products for both customers and employees. Our ultimate goal is to ensure that every single experience with Square is simple, secure, and safe.

The Detection and Response Engineering team contributes to the overall mission through systems hardening, intrusion detection and incident response. We are an engineering focused team and prioritize our work using an attack-driven defensive approach to prioritize our preventive controls, detective controls, and response program based on real world attacker behaviors. We automate the detection of, and response to, attack techniques, proactively hunt for threats in the environment and are responsible for incident response. Additionally, we provide subject matter expertise to infrastructure and product teams to create and enforce policies that strive to harden our assets from attacks and improve our ability to generate strong signals. As a Signals Development Data Scientist,

You will:

  • Analyze Square environments, improve the quality of security and operations data, and derive meaningful insights from existing and future telemetry sources. 
  • Lead the team’s effort behind cost and performance optimization of BigQuery interactions.
  • Design data-normalization techniques for various types of ingested data.
  • Develop multi-source data correlations.
  • Engage with Square’s Signals Development team to design, create, deploy, and tune detections. 
  • Collaborate with Square’s Detection and Response Security Engineering team to tune and extend its security data pipeline and event integration services.


You have:

  • 5+ years of related experience in one or more of the following: analyzing complex security datasets, developing ETL pipelines, detecting and responding to security threats.
  • Strong SQL and ETL pipeline knowledge.
  • Strong security knowledge of several of the following domains: AWS, Google Cloud Platform, Linux, macOS, Network telemetry, Endpoint telemetry, Docker, Kubernetes, and Distributed Systems.
  • Ability to work independently and lead projects and initiatives.
  • Development experience in at least one programming language (i.e. Ruby, Python, Unix shell).

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)squareup.com. 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