Senior Network Administrator

• *Job Title: Network \& System Administrator****Key Responsibilities*** + Manage and maintain network infrastructure, including Cisco switches, SonicWall firewalls, Ruckus Wi\-Fi, ISP connectivity, and network security.

+ Administer Windows, Ubuntu, macOS, Active Directory, cloud domain controllers, file servers, and endpoint security solutions.

+ Manage Microsoft 365, Google Workspace, MDM (Scalefusion/Intune), DLP, MFA, PAM, and endpoint protection platforms.

+ Monitor network, server, and security performance; troubleshoot connectivity, VPN, AWS Workspace, RDP, and encryption\-related issues.

+ Perform system updates, patch management, vulnerability remediation, backups, and disaster recovery activities.

+ Maintain IT assets, documentation, operational reports, and compliance\-ready records.

+ Support ISO 27001, SOC 2, VAPT, and other audit requirements, including evidence collection and remediation tracking.

+ Monitor SIEM tools, conduct log reviews, support incident response, and enforce security policies and best practices.

+ Participate in change management, business continuity (BCP), and disaster recovery (DR) planning and testing.

+ Lead infrastructure projects, vendor evaluations, capacity planning, and continuous improvement initiatives.

+ Provide technical support, user training, and ensure adherence to service\-level agreements (SLAs).

• *Preferred Skills*** + Hands\-on experience with Cisco switches, SonicWall firewalls, Ruckus Wi\-Fi, Active Directory, M365, and Google Workspace.

+ Strong understanding of networking, routing, VLANs, firewalls, and cybersecurity principles.

+ Experience with SIEM, vulnerability management, ITSM, MDM, and DLP solutions.

+ Knowledge of virtualization technologies (VMware/Hyper\-V) and automation tools (PowerShell).

+ Excellent troubleshooting, documentation, and communication skills.

+ Certifications such as CCNA, CCNP, or equivalent are preferred.