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Network Engineer

Jane Street
🇸🇬SingaporeSeniorFull-timePosted March 30, 2026

About the Role

We are seeking an experienced Network Engineer to join our Network Security team, helping to run, scale, and continuously improve network security infrastructure through hands-on operations, design, and implementation. The ideal candidate will have strong networking fundamentals and experience with security appliances such as firewalls and proxies.

  • Work closely with the 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 network security infrastructure
  • Collaborate with the Cybersecurity team on detection and mitigation of threats and vulnerabilities
  • Interface with application owners and traders to enable business workflows securely
  • Enhance support by improving network infrastructure observability and scripting
  • Improve network security processes and documentation

Requirements

  • 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
  • Strong communication and interpersonal skills
  • Strong networking fundamentals and experience with security appliances such as firewalls and proxy
  • Strong communication skills and analytical thinking
  • A holistic approach to system design