Platform Engineer
We are seeking an Advanced Network Engineer to enhance and operate an enterprise Zero Trust network environment built on Zscaler (ZIA/ZPA) and Aruba (ClearPass, switching, wireless) technologies.With the core architecture already in place, this role focuses on:Maximising uptime and service reliabilityDriving automation and operational efficiencyImproving customer experience and network performanceBuilding observability and self-healing capabilitiesYou will be responsible for evolving the network from a functional platform into a highly resilient, intelligent, and low-touch service.Main duties and responsibilitiesService Reliability & UptimeOwn and improve network service availability across global sitesProactively identify and eliminate single points of failureOptimise: ISP performance and failover behaviourZscaler traffic paths and resilienceLAN/WLAN stability (Aruba)Lead root cause analysis for recurring issues and implement permanent fixesZscaler (ZIA/ZPA) OptimisationOperate and continuously improve existing ZIA/ZPA deploymentsTune and maintain:Access policiesTraffic forwarding (Client Connector, Branch Connector)Application segmentation (ZPA)Improve user experience and performance through data-driven optimisationAct as escalation point for complex Zscaler-related issuesAruba & ClearPass OperationsManage and optimise Aruba ClearPass NAC environment:802.1X authentication (wired/wireless)Device onboarding and profilingPolicy enforcement improvementsEnhance reliability of:Campus switching and wireless networksOffice network standard buildsDrive consistency and reduce operational complexity across locationsAutomation & Engineering EfficiencyReduce manual effort by developing automation using:PythonREST APIs (Zscaler, Aruba, Azure, monitoring tools)Automate:Configuration changesPolicy updatesUser/device onboarding workflowsIncident response actionsIntroduce Infrastructure as Code principles where applicableObservability & InsightDesign and improve end-to-end observability of network servicesIntegrate telemetry from:Zscaler platformsAruba infrastructureISP and branch connectivityEnhance monitoring platforms to provide:Actionable alerts (reduce noise)Service-level dashboardsUser experience visibilityUse data to drive proactive improvements rather than reactive fixesSelf-Healing & Proactive OperationsImplement self-healing capabilities, including:Automated failover validationScripted remediation of common faultsEvent-driven automation workflowsBuild closed-loop processes:Detect Diagnose Resolve ValidateReduce MTTR and incident volumes through automationCustomer Experience & Service ImprovementFocus on end-user experience as a primary success metricPartner with Service Desk and L2 teams to:Improve first-time fix ratesReduce escalationsSimplify support modelsTranslate technical improvements into measurable user outcomesAbout youTechnical ExpertiseStrong operational experience with:Zscaler ZIA & ZPAAruba networking (ClearPass, switching, wireless)Experience supporting enterprise-scale, multi-site networksDeep understanding of:Network resilience and failover designIdentity-based access (802.1X, NAC)End-user connectivity troubleshootingAutomation & DevelopmentProficiency in Python scriptingHands-on experience with REST API integrationsExperience improving operational efficiency through automationFamiliarity with:Git / version controlAutomation tooling (Desirable: Ansible, Terraform)Observability & MonitoringStrong experience with monitoring/observability tools (e.g., Zabbix, Grafana, Splunk)Ability to define meaningful SLIs/SLOs and alerting strategiesData-driven approach to performance and reliability improvementSoft SkillsStrong focus on customer experience and service qualityAnalytical, problem-solving mindsetAbility to simplify complex issues for non-technical stakeholdersStructured, documentation-led approachContinuous improvement and ownership mentalityDesirable SkillsExperience with:Zscaler Branch ConnectorAzure networking and identity integrationSASE / SSE environmentsUnderstanding of ITIL service management frameworksExposure to self-healing or AIOps conceptsFoundational understanding of Agile methodologiesWhy JoinDrive the evolution from operational network to intelligent service platformDeliver measurable improvements in user experience and reliabilityWork with modern SASE, NAC, and automation technologiesInfluence global service standards and operational practicesAbout UsWe're a global law firm helping our clients achieve their goals wherever they do business. Our pursuit of innovation has transformed our delivery of legal services. With offices in the Americas, Europe, the Middle East, Africa and Asia Pacific, we deliver exceptional outcomes on cross-border projects, critical transactions and high-stakes disputes.At DLA Piper, we understand that inclusion is not a one-size-fits-all concept. We embrace and celebrate the range of perspectives, backgrounds and experiences that each individual brings to our firm. By fostering a culture that welcomes and appreciates all aspects of our individuality, we ensure that everyone has the opportunity to succeed.Our commitment to inclusion and positive social impact enables us to provide exceptional service to our clients and communities, while nurturing a unique and inclusive culture for all our people. We welcome the unique contribution that you will bring to our firm and actively encourage applications from all talented people – however your talent is packaged, whatever your background or circumstance and regardless of how you identify.We are committed to being accessible and accommodating any reasonable adjustments needed throughout the recruitment process to ensure an inclusive experience for all. If you need any support or adjustments, please let us know.Where local legislation permits, we will conduct relevant pre-engagement screening checks prior to your first day.