• lead the design, implementation, and support of enterprise-scale DNS, DHCP, and IP Address Management (IPAM) solutions across a highly available, mission-critical network environment • partner closely with cross-functional teams to deliver secure, scalable DDI services using both on-premises and cloud-based technologies • drive automation, enforce DNS security policies, and resolve complex network challenges

• Provide network support for the DHS Enterprise Engineering Division (EED), supporting comprehensive HSEN capabilities and services. • Requires deep expertise in LAN/WAN, enterprise wireless networking, network security engineering, collaboration tools, cloud hosting, and advanced communication services. • Operational Support • Software Maintenance and Upgrades • Telecommunications Maintenance (Data, Voice, Images, including Wireless) • Infrastructure Management Services (IMS) • Configuration Management • Network/Hardware Support • IT Support (Tier 3 support) • Resource Management • Backup and Recovery Management • Installation, Configuration, and Tuning • Electronic Software Licensing Services including license: deployment, management, tracking, upgrading, etc. • System Management – Firewalls, etc. • IT Operation and Maintenance Planning • Data Quality Management • Transformation Services • Continual Service Improvement • Balanced Scorecard for Operations • IT Infrastructure Optimization

• Provides high quality installations, and prompt corrective and preventative maintenance on client hardware sold and supported by CDK • Perform Daily functions using WFM device to update service and installation cases • Receive and accept service and install cases • Update ETA information within specified ETA guidelines • Log times using WFM timer functions for Shop, Travel, Onsite, Repair, Audit • Create and Update Parts Requests as required (receipt / return) • Close and Updates cases including any Asset Changes • Perform Asset Inventory of client sites as required during installs

• Operate and troubleshoot routing, switching, VPN, firewalls, wireless, load balancers, and DNS/IPAM across production and non-production environments; restore service quickly and document fixes. • Implement changes via established change control processes; perform peer reviews, validations, and post-change health checks; communicate plans, risks, and backout steps. • Participate in incident response (including major incidents); provide accurate impact updates and contribute to post-incident reviews and corrective actions. • Maintain and improve monitoring, alerting, and observability; tune thresholds/dashboards to reduce noise and speed up triage. • Create and maintain accurate network documentation and SOPs; keep inventories, diagrams, and standards current for operations and audits. • Support security and compliance (e.g., PCI/ISO) by providing evidence, hardening configurations (TLS/certificates/WAF), and remediating findings on schedule. • Contribute to automation for configuration, compliance, backups, and workflows (e.g., scripts and CI/CD pipelines) to improve speed and consistency. • Plan and execute upgrades/migrations during approved windows; engage vendors/TAC effectively when needed.