Senior Security Engineer

3 weeks ago

Palo Alto, California, United States X (formerly Twitter) Full time

At X, we're on a mission to protect freedom of speech and build the future of unlimited interactivity. Our goal is to empower every user to freely create and share ideas, fostering open public discourse without barriers. We're seeking a Senior Security Engineer to help us achieve this vision.

Key Responsibilities:
  • Help maintain the security of X's networks, products, offices, and data centers.
  • Identify and manage risks, working with partner teams to reduce and manage them.
  • Secure, advocate, and help build secure-by-default systems and infrastructure that close off entire classes of security problems.

As a Senior Security Engineer, you will:

  • Scope prospective engagements, leading engagements from kickoff through remediation.
  • Perform network, web, and mobile application testing, source code reviews, threat analysis, and wireless network assessments.
  • Operate and maintain vulnerability scanners.
  • Lead and participate in red team exercises to emulate adversarial activity.
  • Recognize and safely utilize attacker tools, tactics, and procedures.
  • Develop scripts, tools, or methodologies to enhance offensive security processes.
  • Drive security directions and solutions in collaboration with other teams.
  • Use data to drive identification of risk areas and solutions.

Requirements:

  • 5 or more years of experience in network penetration testing, mobile and web app assessments, shell scripting, and exploit development.
  • Knowledge of tools used for wireless, web application, and network security testing.
  • Experience reviewing web and mobile application source code for security issues.
  • Tested security of cloud security infrastructure, including applications deployed on cloud.
  • Deep understanding of Linux/Mac/Windows operating systems, including bash and powershell.
  • Knowledge of at least one of the following languages: Scala (preferred), Go, Python, or Java.

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