Sr. Cyber Security Analyst

San Mateo

Customer Support

Do you enjoy tracking threat actors? Are you an expert at open-source intelligence gathering and pattern recognition? Do you find that financially disrupting cyber adversaries is personally rewarding? Then come join us and rid the internet of bad bots!

What you’ll be doing at PerimeterX…

  • Serve as a technical Subject Matter Expert by advising customers on attack vectors and mitigation needed
  • Improve the product’s ability to detect and mitigate real-time cyber attacks
  • Lead dedicated research for our largest customers, optimize the system, and develop additional unique detections for the product
  • Work cross-functionally with Product, Research, and R&D to guide the future of our security platform

What we are looking for from you (Requirements)...

  • Knowledge of web architecture and protocols (CDN, HTML, DOM, JS, HTTP, HTTPS, TLS/SSH, IPv4/v6, etc.)
  • 7+ years analytical experience working with large-scale datasets
  • Experience with Reverse Engineering applications
  • Experience integrating technology to work to further detection and response
  • Strong analytical skills including the ability to manipulate, model and interpret large quantities of structured data
  • Proficiency in SQL and in at least one major programming language (e.g. Python)
  • Knowledge of fraud investigations and the tools/technologies that support it
  • Experience growing out a technical detection and response team
  • Excellent communication and presentation skills
  • Experience with cybersecurity/web security is highly preferred
  • Experience with the last third-party tools to speed up investigations
  • Prior e-commerce and/or banking experience preferred but not required
  • Degree in Computer Science, Cyber Security, Engineering preferred but not required

Why you should join the PerimeterX team...

  • Making a difference in a leading-edge SaaS security category, protecting real organizations from material threats to their business
  • Being part of a successful fast-growth business and organization
  • Work with some of the most well-known brands in e-commerce, travel, hospitality, retail, and enterprise SaaS
  • Catered lunch and dinners every day, as well as snacks and beverages all-day
  • In/Out of Office happy hours and quarterly out of the office events
  • Automatic cell phone allowance
  • Exceptional 401K, Unlimited PTO, and Health Benefits
  • Fresh PerimeterX SWAG
PerimeterX is the leading provider of application security solutions that keep your web business safe in the complex digital world. Delivered as a service, the company’s Bot Defender, Code Defender, and Page Defender solutions detect risks to your web applications and proactively manage them, freeing you to focus on growth and innovation. Bringing together an elite engineering team, security research to continually update its solutions with current intelligence, and best-in-class customer enablement and support, the world’s largest and most reputable websites and mobile applications count on PerimeterX to safeguard their consumers’ digital experience. PerimeterX is located in San Mateo, California, and on the web at
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