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Join Jane Street as Senior Network Engineer in London, scaling multi‑vendor networks, automating with AI, and designing high‑availability systems.
Drive innovation, documentation excellence, and cross‑team collaboration while exploring AI/ML in network operations.
About the Position
We 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 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 Using your networking expertise to help us scale our team’s infrastructure at large while maintaining high standards for network performance and reliability
- Documenting solutions and processes that help the team work more efficiently, using a meticulous attention to detail
If 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 You
Have 7+ years of experience operating and deploying network infrastructure, with 3+ years dedicated to ground-up network design
Have 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
Have a 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
If you're a recruiting agency and want to partner with us, please reach out to agency-partnerships@janestreet.com.