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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Network Engineer - **Company:** Hack The Box - **Location:** UK (Remote available) - **Experience:** Expert - **Salary:** £59,641.0 - **Contract:** Permanent contract - **Skills:** Private Networks, Systems Engineering, Border Gateway Protocol, Cyber Security, Computer Networks, Data Centers, Distributed Data Store, Information Technology Operations, Networking Hardware, Junos, Network Layer, Network Architecture, Network Monitoring, Routing, Open Shortest Path First (OSPF), Remote Direct Memory Access, Ansible, Prometheus, Simple Network Management Protocols, Data Streaming, Virtual Local Area Networks, Virtualization Technology, Ceph (Software), Datadog, Load Balancing, Computer Network Operations, Grafana, Juniper, Data Center Networking, Containerization, Kubernetes, Iptables, Bare Metal, Routing & Switching, Terraform, Open Network Automation Platform, Golang, Vmware - **Published:** September 1, 2026 - **Apply:** https://www.adzuna.co.uk/jobs/details/5863022207 ## About the Role * 5+ years of professional experience in network engineering, with a focus on data center networking * Deep hands-on experience with BGP (eBGP/iBGP), including route policies, communities and prefix management across multi-site environments * Proven experience designing and operating EVPN-VXLAN fabrics * Strong proficiency with JunOS and Juniper switching/routing platforms (QFX, MX series) * Solid understanding of spine-leaf / IP fabric architectures, VLANs, VRFs and inter-VLAN routing * Experience with network automation tools (Ansible, Terraform, Nornir or similar) * Comfortable with Linux networking fundamentals (iptables/nftables, routing, bonding, VXLANs at the host level) * Strong troubleshooting skills - ability to methodically diagnose complex, multi-layer issues under pressure * Excellent written communication for documenting designs and collaborating in a remote-first environment * Being cyber security-minded is a strong plus Bonus Points: * Experience with network operations in a multi-region, multi-continent data center environment * Familiarity with Ceph or other distributed storage systems from a network-performance perspective (NVMEoF, RDMA, high-throughput east-west traffic) * Exposure to Kubernetes networking (CNI plugins, service meshes, load balancers) * JNCIA/JNCIS/JNCIP or equivalent networking certifications * Understanding of Golang for building internal network tooling or automation * Experience in a cybersecurity-focused or platform-as-a-service company ## Description You will be part of the wider infrastructure team, reporting to the Director of Infrastructure. You will work alongside systems engineers, platform engineers and SREs responsible for bare-metal, virtualization and container platforms. You will also work cross functionally with security operations, product engineering and IT operations ️ Tools & weapons you'll be using: BGP, EVPN-VXLAN, JunOS (Juniper QFX/MX), OSPF, Spine-Leaf / IP Fabric, VLANs, VRFs, Linux networking, Ansible, Terraform, Prometheus / Grafana, Observability tooling The adventures that await you after becoming Senior Network Engineer at Hack The Box: * Design and implement spine-leaf network architectures across multiple data center sites in the US, EU, Singapore and Australia * Operate and troubleshoot BGP (eBGP/iBGP) peering, route policies and prefix filtering in a multi-site environment * Build and maintain EVPN-VXLAN overlay fabrics for scalable Layer 2/Layer 3 connectivity across data centers * Configure, upgrade and harden Juniper network equipment (QFX, MX series) running JunOS * Develop and maintain network automation using Ansible, Terraform or similar infrastructure-as-code tooling * Establish and improve network monitoring, alerting and observability (Prometheus, Grafana, SNMP, streaming telemetry) * Plan and execute network capacity upgrades, site bring-ups and hardware refresh cycles * Collaborate with the platform/systems engineering team on network requirements for VMware, Kubernetes and Ceph storage clusters * Document network designs, runbooks and standard operating procedures for a globally distributed team * Participate in on-call rotation for network-related incidents across all regions, * You'll have the exhilarating opportunity to contribute to a product that is highly appreciated by users and the cybersecurity community at large. * You'll experience a highly supportive and caring environment, fostering growth, flexibility, and autonomy. * You'll embark on an exciting journey of continuous learning and problem-solving, levelling up as our organisation grows. * Most importantly, you'll have a blast at HTB because fun is an essential ingredient in our recipe for success! 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