Senior Network Engineer

Senior Network Engineer (L3, EMEA)📍 EMEA | RemoteAbout Sharon AISharon AI is building the infrastructure powering the next generation of artificial intelligence. Operating across AI infrastructure, high-performance compute and large-scale technology environments, Sharon AI delivers scalable, secure and commercially sustainable infrastructure solutions supporting advanced AI workloads globally.The RoleAs Senior Network Engineer (L3), you'll be responsible for the design, delivery and ongoing operation of Sharon AI's network infrastructure across its EMEA data centre and AI compute environments. You'll own network architecture, lead complex troubleshooting and incident resolution, and help drive the reliability and scalability of Sharon AI's network as the business and compute footprint grows.Reporting to the Head of Operations, you'll work closely with infrastructure, data centre and security teams, as well as external vendors and connectivity partners. You'll also provide technical mentorship and guidance to L1/L2 Network Engineers across the EMEA team.This is a senior individual contributor role suited to an experienced network professional who enjoys solving complex technical problems, taking ownership of architecture and operating in high-availability, mission-critical environments.Key ResponsibilitiesOwn the design, implementation and lifecycle management of enterprise network infrastructure, including routing, switching, firewalls and load balancingAct as a senior technical escalation point for complex network incidents across the EMEA regionLead root cause analysis and drive resolution of high-impact network issuesArchitect and lead network designs for new EMEA deployments and capacity expansionsPartner with infrastructure, data centre and security teams on network architecture and deploymentDefine and maintain network security architecture, including segmentation, VPNs and firewall policy standardsDrive capacity planning and network scaling strategy as Sharon AI's infrastructure and compute footprint growsLead automation and tooling initiatives to reduce manual effort and improve network reliability at scaleMaintain and continuously improve network documentation, architecture diagrams, configuration standards and change recordsProvide technical mentorship and guidance to L1/L2 Network Engineers, including reviewing designs and configurationsRepresent the network function in technical discussions with internal stakeholders and external vendorsSupport hardware, connectivity and carrier-related technical discussions across the regionParticipate in and help structure the EMEA on-call rotation supporting critical infrastructure outside of business hoursSkills & Experience6–10+ years' experience as a Network Engineer, with progression into senior or lead technical rolesStrong experience within data centre, enterprise, cloud or ISP environmentsExpert-level knowledge of routing and switching protocols, including BGP, OSPF, VLAN and STPProven experience designing and supporting enterprise network architecturesStrong experience with firewalls, VPNs and load balancers at scaleExperience with technologies such as Palo Alto, Fortinet, F5, Cisco, Arista or JuniperStrong track record of network incident response and root cause analysis in high-availability environmentsExcellent understanding of network security architecture and best practiceDemonstrated ability to mentor and technically guide less experienced engineersStrong stakeholder management and communication skills across multiple regionsBachelor's degree in Computer Science, Information Technology, Networking or a related disciplineAdvanced networking certifications such as CCNP, CCIE, JNCIP or equivalent will be highly regardedHands-on experience with data centre and high-performance compute networking, including technologies such as InfiniBand, RDMA or low-latency fabrics, is strongly preferred. Experience within technology, cloud, AI infrastructure or high-performance compute environments will be highly regarded.Why Join Sharon AITake ownership of network architecture across Sharon AI's growing EMEA infrastructure footprintWork on highly available networks supporting advanced AI and high-performance compute workloadsPlay a key technical role in designing and scaling new data centre and AI compute environmentsSolve complex network challenges across a fast-growing, globally distributed infrastructure environmentProvide technical leadership and mentorship without the constraints of a traditional management roleWork closely with infrastructure, data centre, security and operations teams across EMEAHelp build the network standards, automation and operational practices that will support Sharon AI as it scalesJoin a team operating at the forefront of AI infrastructure and high-performance computingOur ValuesIntegrity | Innovation | Collaboration | Wellbeing | Inclusion