Software Engineer- Area 1 Security
San Jose
hace 5 días

About Us

At Cloudflare, we have our eyes set on an ambitious goal : to help build a better Internet. Today the company runs one of the world’s largest networks that powers approximately 25 million Internet properties, for customers ranging from individual bloggers to SMBs to Fortune 500 companies.

Cloudflare protects and accelerates any Internet application online without adding hardware, installing software, or changing a line of code.

Internet properties powered by Cloudflare all have web traffic routed through its intelligent global network, which gets smarter with every request.

As a result, they see significant improvement in performance and a decrease in spam and other attacks. Cloudflare was named to Entrepreneur Magazine’s Top Company Cultures list and ranked among the World’s Most Innovative Companies by Fast Company.

We realize people do not fit into neat boxes. We are looking for curious and empathetic individuals who are committed to developing themselves and learning new skills, and we are ready to help you do that.

We cannot complete our mission without building a diverse and inclusive team. We hire the best people based on an evaluation of their potential and support them throughout their time at Cloudflare. Come join us!

Cloudflare Area 1 Security builds advanced technology focused on the source of 95% of data breaches on the internet : phishing.

Hunting for bad actors on the internet is an intellectual and technical challenge. We hunt at scale with web crawling, machine learning, computer vision, petabytes of data, and a global network of sensors.

All of this technology delivers a comprehensive email, network and web protection layer around each of our customers. Customers know that with Cloudflare Area 1 Security’s solution deployed, their users won’t enable a hacker to gain a foothold that results in a breach of their systems.

Come and join an engineering team that builds extensible, reliable, scalable web-based, and data processing applications that our customers count on every second of the day.


  • Create the product’s subsystems and key components by applying up-to-date expertise in Software Engineering to define, design and create world-class implementations.
  • Collaborate with other senior engineers to improve the overall system at the architectural, design, and implementation levels.
  • Design and implement new features for our cloud-based email gateway solution that empowers Fortune 1000 customers.
  • Design and implement forward-looking portions of the system to execute a long-term product vision.
  • Work with large scale data systems in both online / streaming and offline / batch fashions
  • Design and implement revisions to areas of the system to enhance key features such as performance, reliability, scalability, or add new functionality

  • 5 years of experience designing and implementing software systems
  • Advanced ability to design and implement software systems in Java.
  • Someone who enjoys security work focused on email detections that identify and protect our users.
  • Distributed systems experience in a Unix environment

  • BS / MS in Computer Science or similar engineering discipline
  • Strong software engineering skills and substantial expertise in additional programming and scripting languages : Rust, Python, and shell scripting
  • Experience with SMTP
  • Significant experience in networking, security, cryptography, malware analysis, data analysis, high-reliability clusters, statistics
  • Detailed understanding of object-oriented design practices.
  • Expert who specializes in big data analysis and design and construction of large-scale multi-tier systems using open-source technologies
  • Recent development or architectural leadership experience with large-scale data systems, streaming analytics.
  • Experience with continuous integration and delivery environments and agile methodologies.
  • Experience developing, deploying, maintaining applications using public cloud providers (AWS / GCP / Azure)
  • JOB ID#JE A1 157

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