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's lots of room to push your skill set further.