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Network Engineer, Security

Jane Street· Technology
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Hybrid (SGP)full-timePosted 3mo ago

About the role

Experienced Network Engineer to join the Network Security team to run, scale, and continuously improve network security infrastructure through hands-on operations, design, and implementation. Focus on security perimeter, network segmentation, DMZ, and collaboration with Cybersecurity and application teams.

Responsibilities

  • Work closely with our Network Engineering team on the design and deployment of security perimeter and adjacent network infrastructure
  • 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 our Cybersecurity team on the detection and mitigation of threats and vulnerabilities on our network
  • Interface with application owners and traders to enable business workflows securely
  • Proactively enhance support by improving network infrastructure observability and scripting, and communicating requirements to our software engineers
  • Improve our network security processes and documentation

Qualifications

  • Have 7+ years of experience operating and deploying network infrastructure
  • Experienced with routing and network protocols (OSPF, BGP, PIM-SM)
  • Experienced with troubleshooting transport protocols (TCP/UDP)
  • Have a strong understanding of firewall hardware architecture, performance metrics, and functional components
  • Experienced with firewall configuration and troubleshooting
  • Understand Public Key Infrastructure and related technologies
  • Understand modern encryption techniques
  • Have a high capacity to learn; we are interested in how you think, not just what you know
  • Able to context-switch, while still being able to prioritize and organize your stack
  • Ideally have experience with overlay networks (EVPN, VxLAN)
  • A flexible and reliable team player who enjoys working in a collaborative environment
  • Preferably have proficiency in a programming language
  • Fluency in English required

Skills

Required:Network infrastructure operation and deploymentRouting protocolsTransport protocol troubleshootingFirewall hardware architectureFirewall configurationPublic Key InfrastructureModern encryption techniques
Nice to have:Overlay networks (EVPN, VXLAN)Programming proficiency
Last updated Oct 25, 2026. Interested? Apply on the company site.

About Jane Street

SIX

Jane Street is a quantitative trading firm and liquidity provider with a unique focus on technology and collaborative problem solving.

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