Infrastructure & Systems Security Team Lead

Job Purpose Lead and support the operation, security, reliability, and availability of IT infrastructure and systems across on-premises and cloud environments, including networks, infrastructure security, access controls, vulnerability management, and business continuity, to ensure secure and stable delivery of critical IT services. Key Responsibilities & Duties: Infrastructure & Cloud Operations - Manage and support IT infrastructure across on-premises, Microsoft Azure, DEEM Cloud, and hybrid cloud environments. - Monitor the availability, performance, and capacity of infrastructure services and address technical issues affecting service continuity. - Support data center infrastructure, servers, backup solutions, and related technology services. - Maintain secure configurations and technical hardening standards across infrastructure components. Network & Connectivity - Manage enterprise network infrastructure, including routers, switches, VLANs, MPLS, WAN connectivity, and Wi-Fi environments. - Monitor network performance and availability and troubleshoot connectivity and infrastructure issues. - Maintain secure connectivity between on-premises environments, cloud platforms, internet services, and external service providers. - Support unified communications and voice services, including Cisco Call Manager, voice gateways, and SIP connectivity, as required. Infrastructure & Systems Security - Implement and maintain security controls across networks, servers, endpoints, databases, cloud environments, and digital services. - Manage infrastructure security solutions, including firewalls, VPN, web proxy, endpoint protection, and secure remote access. - Monitor security events and alerts through relevant monitoring platforms and investigate incidents based on their technical impact and priority. - Support incident containment, service recovery, and improvement of security monitoring controls. Access, Vulnerability & Security Management - Manage and review user, system, and application access controls in accordance with approved security policies and least-privilege principles. - Support multi-factor authentication and other access protection mechanisms across relevant systems and services. - Analyze vulnerability assessment results and coordinate remediation and security patching activities. - Verify the completion and effectiveness of security updates, technical hardening, and corrective actions. Business Continuity & Disaster Recovery - Support backup, restore, high-availability, and disaster recovery capabilities for critical IT services. - Execute and participate in disaster recovery, failover, and service restoration tests. - Verify the readiness and recoverability of critical systems across DEEM Cloud and data center environments. - Identify technical risks affecting infrastructure availability and support appropriate mitigation actions. Technical Projects, Readiness & Coordination - Support infrastructure implementation, upgrades, and technical projects in coordination with internal teams, contractors, vendors, and service providers. - Review infrastructure and security readiness before new systems and services are moved into production. - Validate that security controls do not adversely affect system performance, connectivity, or service availability. - Coordinate technical requirements and follow up on infrastructure-related issues with technology vendors and service providers. Reporting & Continuous Improvement - Prepare periodic operational reports covering infrastructure availability, security incidents, vulnerabilities, risks, and remediation progress. - Monitor technical and security performance indicators and identify recurring issues and improvement opportunities. - Maintain technical and security documentation to support operational continuity, audit requirements, and future improvements. - Recommend practical improvements to infrastructure, security controls, monitoring tools, and operational processes. Qualifications - Bachelor’s degree, preferably in Information Technology, Computer Science, Computer Engineering, Network Engineering, or another field relevant to the role. Experience - 6+ years of total professional experience.