Network Security Engineer

Responsibilities

• Work closely with Network Engineering on design and deployment of security perimeter and adjacent network infrastructure
• Effectively manage and continuously evolve network segmentation, DMZ, and other aspects of network security
• Evaluate and lab test new platforms for our network security infrastructure
• Collaborate with Cybersecurity on detection and mitigation of threats and vulnerabilities on our network
• Interface with application owners and traders to enable business workflows in a secure way
• Proactively enhance support by improving network infrastructure observability, scripting, and communicating requirements to our software engineers
• Improve our network security processes and documentation

Requirements

• 7+ years of experience operating and deploying network infrastructure
• Experience with routing and network protocols (OSPF, BGP, PIM-SM)
• Experience troubleshooting transport protocols (TCP/UDP)
• Strong understanding of firewall hardware architecture, performance metrics, and functional components
• Experience with firewall configuration and troubleshooting
• Understanding of Public Key Infrastructure and related technologies
• Understanding of modern encryption techniques
• Fluency in English

Preferred Qualifications

• Experience with overlay networks (EVPN, VxLAN)
• Proficiency in a programming language

About the Company

Jane Street builds numerous distributed systems on an agile, reliable, multi-vendor network infrastructure that supports all traffic profiles, from trading to internet connectivity.