Network Security Detection Engineer

Facebooks’ 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. We are looking for a candidate with a passion for security and innovation, who will research and develop new solutions to help protect our infrastructure and our users. This candidate 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 are great opportunities to push your skills further while having a significant impact.
Network Security Detection Engineer Responsibilities
  • Iterate network security posture to better protect against attacks and detect new vectors
  • Lead network efforts to mitigate and investigate security incidents
  • Develop automation and utilize frameworks to scale both protection and mitigation tools
  • Evaluate and test new vendor and in house network initiatives for security issues
  • Mentor and evangelize security practices through cross functional work with engineering teams throughout Facebook
  • Keep Facebook safe through active operation and defense of critical network infrastructure
Minimum Qualifications
  • 3+ years of 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
  • 5+ years of experience in offensive/defensive security or systems engineering
  • Knowledge of network protocols (TCP/IP, computer networking, routing and switching) and Unix based systems
  • Experience researching, building, and implementing defensive security systems that are used against internal and external attack vectors
  • Experience designing and building out application and network security monitoring to aid in detection or forensic investigations
Preferred Qualifications
  • Background in intrusion detection, security investigations, and incident response
  • Understanding of MITRE ATT&CK Framework and associated threat actor techniques
  • Experience “threat hunting”, i.e. using threat intel to proactively and iteratively investigate these potential risks and finding suspicious behavior in the network
  • Experience investigating network-based data for anomalies in order to identify suspicious behavior
About the Facebook company
Facebook’s mission is to give people the power to build community and bring the world closer together. Through our family of apps and services, we’re building a different kind of company that connects billions of people around the world, gives them ways to share what matters most to them, and helps bring people closer together. Whether we’re creating new products or helping a small business expand its reach, people at Facebook are builders at heart. Our global teams are constantly iterating, solving problems, and working together to empower people around the world to build community and connect in meaningful ways. Together, we can help people build stronger communities — we’re just getting started.
Facebook is committed to providing reasonable support (called accommodations) in our recruiting processes for candidates with disabilities, long term conditions, mental health conditions or who are neurodivergent, and to candidates with sincerely held religious beliefs or requiring pregnancy related support. If you need support, please reach out to
(Colorado only*) Minimum salary of $151,000/year + bonus + equity + benefits
*Note: Disclosure as required by sb19-085(8-5-20)
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Facebook is proud to be an Equal Employment Opportunity and Affirmative Action employer. We do not discriminate based upon race, religion, color, national origin, sex (including pregnancy, childbirth, reproductive health decisions, or related medical conditions), sexual orientation, gender identity, gender expression, age, status as a protected veteran, status as an individual with a disability, genetic information, political views or activity, or other applicable legally protected characteristics. You may view our Equal Employment Opportunity notice here. We also consider qualified applicants with criminal histories, consistent with applicable federal, state and local law. We may use your information to maintain the safety and security of Facebook, its employees, and others as required or permitted by law. You may view Facebook’s Pay Transparency Policy, Equal Employment Opportunity is the Law notice, and Notice to Applicants for Employment and Employees by clicking on their corresponding links. Additionally, Facebook participates in the E-Verify program in certain locations, as required by law.
Facebook is committed to providing reasonable accommodations for qualified individuals with disabilities and disabled veterans in our job application procedures. If you need assistance or an accommodation due to a disability, you may contact us at

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