Jane Street Logo

Jane Street

Senior Network Engineer

Reposted One Month Ago
Be an Early Applicant
In-Office
London, Greater London, England, GBR
Senior level
In-Office
London, Greater London, England, GBR
Senior level
The Senior Network Engineer will manage and scale network infrastructure, enhance workflows through AI and automation, and document solutions for improved efficiency.
The summary above was generated by AI
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 [email protected].

Jane Street London, England Office

2 & A Half, Devonshire Square, London, United Kingdom, EC2M 4UJ

Similar Jobs

13 Days Ago
Hybrid
London, Greater London, England, GBR
Senior level
Senior level
Cloud • Computer Vision • Information Technology • Sales • Security • Cybersecurity
Design, implement, operate, and troubleshoot CrowdStrike’s global multi-vendor, multi-cloud, hybrid data center networks. Build cloud connectivity and network constructs, develop infrastructure-as-code and automation using Ansible, Terraform, Python, and Go, improve resilience and deployment efficiency, support incident analysis and on-call rotations, and ensure compliance with regional data sovereignty and security requirements.
Top Skills: AnsibleAnycastAWSAzureBashChefCi/CdClosEvpn/VxlanFrrGCPGoInfinibandIpsecIpv4Ipv6Is-IsJinjaJSONL3VpnLoad BalancingMacsecMp-BgpMplsOciOpenstackOspfPrivatelinkPythonQosRdmaRoceSonicTerraformVpcYaml
7 Days Ago
In-Office
Senior level
Senior level
Software • Transportation
Lead the design, implementation, support, and optimization of enterprise network infrastructure across UK data centers and offices. Configure FortiGate firewalls, FortiADC load balancers, Dell switching platforms, OSPF routing, VLANs, VPNs, and secure network controls. Troubleshoot outages, support monitoring and incident response, maintain high-availability architectures, contribute to compliance activities, manage carrier connectivity, and document resilient network designs. Mentor team members and participate in 24x7 on-call operations.
Top Skills: Cyber Essentials PlusDell NetworkingFortiadcFortigateIso 27001Layer 2 SwitchingLayer 3 SwitchingOspfTcp/IpVlansVpn
8 Days Ago
Hybrid
Senior level
Senior level
Cloud • Information Technology • Cybersecurity
Supports and troubleshoots enterprise LAN, WAN, WLAN, firewall, VPN, SD-WAN, and data-centre networks as a Tier 2 escalation point. Responsibilities include incident response, network implementations, migrations, technical documentation, customer onboarding, change delivery, root-cause analysis, capacity and vulnerability management, monitoring improvements, and service transition. The role operates across multi-vendor environments supporting NHS, clinical, and public-sector services, mentors Tier 1 engineers, and participates in an on-call rota.
Top Skills: 802.1XAnsibleAPIsBgpCisco Ios/Nx-OsCloud NetworkingEvpnExtreme ExosExtremecloud IqFortimanagerFortinet FortigateHsrpIso 27001ItilLogicmonitorNatNhs DsptOspfPrtgPythonSd-WanSolarwindsSpanning Tree ProtocolVlanVpnVrrpVxlan

What you need to know about the London Tech Scene

London isn't just a hub for established businesses; it's also a nursery for innovation. Boasting one of the most recognized fintech ecosystems in Europe, attracting billions in investments each year, London's success has made it a go-to destination for startups looking to make their mark. Top U.K. companies like Hoptin, Moneybox and Marshmallow have already made the city their base — yet fintech is just the beginning. From healthtech to renewable energy to cybersecurity and beyond, the city's startups are breaking new ground across a range of industries.

Sign up now Access later

Create Free Account

Please log in or sign up to report this job.

Create Free Account