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About the Role

The Network Edge Security team builds tools that provide insights into API security posture and the trustworthiness of traffic flowing into our systems. Our capabilities use machine learning, streaming analytics, and data analysis to understand network edge risk exposure and request flow sources. The team's primary focus is enhancing API security for downstream products and services, with the ability to respond to emerging threats. The team is small, requiring nimbleness and flexibility. A strong passion for the problem space, including knowledge of Content Distribution Networks (CDN), analytical tools, network protocols, behavior, authentication, and authorization systems is essential. You will collaborate with engineering and operational teams across the organization.

Responsibilities

Respond and mitigate emerging threats and attacks at our network edge by leveraging WAF rules, bot vendors, and other CDN-native technologies
Help build out infrastructure that gives us better inventory of our network edge security posture
Build out and maintain a near-real time streaming analytics data pipeline and application
Contribute to the evolution of our labeling and ML model development
Help manage and maintain our systems across build, deploy, and production monitoring
Be flexible with respect to computer languages as we use Java, Kotlin, Python, TypeScript, PySpark and others as needed or appropriate
Evaluate and build integrations with vendor systems that may be used in addition to in-house solutions
Develop and implement AI-driven capabilities to automatically classify and mitigate abusive traffic patterns

Requirements

5+ years of software or security engineering experience developing scalable production software incorporating testing, evaluation, and monitoring
Bachelor's degree in Computer Science or equivalent practical experience
Proficient in Java, Kotlin, Typescript, and Python
Proficient in data analysis using SQL and Spark
Experience implementing and maintaining applications in both a CDN (Cloudflare and Fastly) and Amazon Web Services (AWS) ecosystems
Significant experience with bot/fraud identification and mitigation systems is a strong plus
Familiarity with Snowflake, Databricks, and Datadog are a strong plus

Skills

Java
Kotlin
Typescript
Python
SQL
Spark
Cloudflare
Fastly
Amazon Web Services (AWS)
Snowflake
Databricks
Datadog
Terraform
Kafka
Content Distribution Networks (CDN)
analytical tools
network protocols
network behavior
authentication systems
authorization systems
machine learning
streaming analytics
data analysis
WAF rules
bot vendors
AI-driven capabilities

Location

remote

Work Type

remote-first
full-time

Experience Level

5+ years of software or security engineering experience

Education Level

Bachelor's degree in Computer Science or equivalent practical experience

Salary/Compensations

Zone A: $217,800—$326,800 USD
Zone B: $207,000—$310,400 USD
Zone C: $196,100—$294,100 USD
Zone D: $185,200—$277,800 USD

Benefits

Remote work
medical insurance
flexible time off
retirement savings plans
modern family planning

About the Company

Block is one company built from many blocks, all united by the same purpose: economic empowerment. We build technology that increases access and independence for sellers, individuals, and artists around the world. Working at Block means working on and across our brands—Square, Cash App, Afterpay, TIDAL, Spiral, and Proto— in roles that connect, enable, and push all of them forward faster.
We’re remote-first by design and operate with intelligence at the center of everything we do. At Block, you'll be challenged by some of the brightest, most creative minds in the industry and have the tools and autonomy to do the most meaningful work of your career.
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.

Equal Opportunity

We’re working to build a 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.