Network Security Engineer

Metas Network Security team is seeking an experienced engineer to help secure the infrastructure that connects over a billion users. You will be responsible for building, implementing and operationally supporting network security efforts throughout our network. Were seeking a collaborative team member who is enthusiastic about security and innovation, who will research and develop innovative solutions to help protect our infrastructure and our users. This teammate should thrive on finding security issues and eradicating them as well as a desire to make life hard for the bad guys. With focuses that range from large scale DDoS, detection, security tool development, defense against internal and external attacks there is lots of room to push your skill set further.

Network Security Engineer Responsibilities

1. Iterate network security posture to better protect against attacks and detect new vectors.
2. Lead network efforts to mitigate and investigate security incidents.
3. Develop automation and utilize frameworks to scale both protection and mitigation tools.
4. Evaluate and test new vendor and in-house network initiatives for security issues.
5. Mentor and evangelize security practices through cross-functional work with engineering teams throughout Meta.
6. Keep Meta safe through active operation and defense of critical network infrastructure.

Minimum Qualifications

1. 10+ years of experience in offensive/defensive security, or systems engineering.
2. Knowledge of network protocols (TCP/IP, computer networking, routing and switching), and Unix based systems.
3. Experience researching, building and implementing defensive security systems that are used against internal and external attack vectors.
4. Experience designing and building out application and network security monitoring to aid in detection or forensic investigations.
5. Development experience in at least one programming language (Python, Go, etc.) with experience applying that to security tool development, automation and overall programmatic solutions that will be used to defend infrastructure.

Preferred Qualifications

1. Expert level understanding of host and network-based access controls.
2. Expert level understanding of threat models to better protect against attacks or detect new vectors.
3. Experience leading network efforts to prevent, mitigate and investigate security incidents.
4. Design and implement automation solutions, leveraging frameworks to streamline and scale protection and mitigation tools, reducing manual effort and repetitive tasks (e.g., developing systems to automate firewall changes, rather than performing them manually).
5. Experience evaluating and testing new vendor platforms and in-house network initiatives for security issues.
6. Proven experience in promoting and embedding security best practices across cross-functional teams, including engineering, through mentorship, collaboration, and advocacy.
7. Experience leveraging layered security models to defend critical network infrastructure.

About Meta

Meta builds technologies that help people connect, find communities, and grow businesses. When Facebook launched in 2004, it changed the way people connect. Apps like Messenger, Instagram and WhatsApp further empowered billions around the world. Now, Meta is moving beyond 2D screens toward immersive experiences like augmented and virtual reality to help build the next evolution in social technology. People who choose to build their careers by building with us at Meta help shape a future that will take us beyond what digital connection makes possible today—beyond the constraints of screens, the limits of distance, and even the rules of physics.

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