About the PositionWe are looking for a Senior Network Engineer who can help us scale our networks to meet increasing business demands, drive standardisation through automation and look for opportunities to leverage AI to improve operations.Jane Street''s numerous distributed systems run on a multi-vendor, highly available network infrastructure and handle a variety of traffic profiles - from high-speed trading to everyday internet connectivity. A typical day on the Network Engineering team includes:Collaborating on new data centre and colocation initiatives, WAN routing optimisation and other cross-team design projectsInterfacing with stakeholders to assess business needs and develop innovative network features/capabilitiesLeading both reactive support tasks and proactive infrastructure improvements, focusing on thorough documentation to reduce outages and enhance troubleshootingExploring AI/ML-driven enhancements to streamline operations and continuously improve service qualityDocumenting solutions and processes that help the team work more efficiently, using a meticulous attention to detailIf you have a passion for innovating within a complex network ecosystem, enjoy building scalable systems and documentation structures and are curious about how AI can refine network operations, this role provides a platform to make a significant impact at Jane Street. We look forward to learning from your expertise and unique perspective.About YouHave 7+ years of experience operating and deploying network infrastructure, with 3+ years dedicated to ground-up network designHave 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 languageStrongly inclined to automate workflows and explore AI/ML approaches to improve efficiency or reduce overheadEager to produce comprehensive, scalable documentation that benefits the entire teamHave a demonstrated ability to balance multiple priorities, switch contexts effectively and maintain a high level of customer serviceExcellent collaborator and communicator; ready to build strong partnerships with diverse global teams and stakeholders to share your recommendations, issues and outcomesHave a flexible, reliable mindset and enthusiasm for sharing knowledge with peersAny prior exposure to overlay networks (EVPN, VXLAN) is a plusFluent in English

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