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Senior Network Engineer

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

About the role

Senior Network Engineer to scale Jane Street's multi-vendor network infrastructure, drive automation, and explore AI-enabled enhancements. Focus on data centre initiatives, WAN routing optimization, cross-team design, documentation, and scalable operations within a high-availability trading environment.

Responsibilities

  • Collaborating on new data centre and colocation initiatives, WAN routing optimisation and other cross-team design projects
  • Interfacing with stakeholders to assess business needs and develop innovative network features/capabilities
  • Leading both reactive support tasks and proactive infrastructure improvements, focusing on thorough documentation to reduce outages and enhance troubleshooting
  • Exploring AI/ML-driven enhancements to streamline operations and continuously improve service quality
  • Documenting solutions and processes that help the team work more efficiently, using meticulous attention to detail

Qualifications

  • Have 7+ years of experience operating and deploying network infrastructure, with 3+ years dedicated to ground-up network design
  • Deep experience with routing and network protocols (OSPF, BGP, PIM-SM) and the troubleshooting of transport protocols (TCP/UDP)
  • Comfortable operating in Linux environments and proficient in at least one programming language
  • Strongly inclined to automate workflows and explore AI/ML approaches to improve efficiency or reduce overhead
  • Eager to produce comprehensive, scalable documentation that benefits the entire team
  • Demonstrated ability to balance multiple priorities, switch contexts effectively and maintain a high level of customer service
  • Excellent collaborator and communicator; ready to build strong partnerships with diverse global teams and stakeholders to share your recommendations, issues and outcomes
  • Have a flexible, reliable mindset and enthusiasm for sharing knowledge with peers
  • Any prior exposure to overlay networks (EVPN, VXLAN) is a plus
  • Fluent in English

Skills

Required:Network designRouting protocolsLinuxProgrammingAutomationDocumentation

Benefits

  • Equal Opportunity Employer
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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