Network Engineer

TechnoSphere, Inc.; Dearborn (MI); On-site; USD 90,000 - 150,000; Full time

Job summary

TechnoSphere, Inc. is seeking a highly skilled network security engineer to design, implement, troubleshoot, and optimize enterprise security solutions across client infrastructure.

You will be the SME for firewalls, VPNs, proxies, and cloud security platforms, handling P1/P2 incidents and ITIL-driven changes, and collaborating with SOC and cross-functional teams. The role requires strong knowledge of Prisma Access, GlobalProtect, IPsec/SSL VPN, and proxy technologies, with hands-on experience

Qualifications

• Provide L3 support and SME for network security technologies.
• Manage and troubleshoot firewalls, VPN, proxy, and cloud security platforms.
• Handle P1/P2 incidents, RCA, and problem management.
• Execute changes aligned with ITIL processes.
• Analyze logs, packet captures, and security alerts.
• Collaborate with SOC, TAC, and cross-functional teams.
• Maintain documentation, SOPs, and configurations.
• Participate in client calls and technical discussions.

Responsibilities

• Provide L3 support and SME for network security technologies.
• Manage and troubleshoot firewalls, VPN, proxy, and cloud security platforms.
• Handle P1/P2 incidents, RCA, and problem management.
• Execute changes aligned with ITIL processes.
• Maintain documentation, SOPs, and configurations.
• Collaborate with SOC, TAC, and cross-functional teams.
• Participate in client calls and technical discussions.

Skills

Network Security

Firewall Platforms

Prisma Access

VPN & Secure Access

GlobalProtect VPN

IPSec SSL VPN

Proxy Technologies

PAC File Management

Office 365 Proxy

Network Infrastructure

Routing BGP/OSPF

VLANs & STP

Tools

Cisco WSA

Job description

We are looking for a highly skilled professional responsible for designing, implementing, troubleshooting, and optimizing enterprise network security solutions. The role requires deep expertise in firewalls, secure access technologies, proxy/security platforms, and incident management, supporting critical client infrastructure.

Key Technical Requirements:

• Network Security & Firewall Platforms
• Prisma Access
• VPN & Secure Access
• GlobalProtect VPN
• IPSEC / SSL VPN
• Proxy & Security Technologies
• Proxy bypass, PAC file management
• O365 and cloud proxy integrations
• Network Infrastructure
• Routing: BGP, OSPF
• Switching: VLANs, STP, EtherChannel

Core Responsibilities:

• Provide L3 support and act as SME for network security technologies
• Manage and troubleshoot firewalls, VPN, proxy, and cloud security platforms
• Handle P1/P2 incidents, RCA, and problem management
• Execute changes aligned with ITIL processes
• Manage and optimize Cisco WSA (proxy) including:
• URL filtering, access control, HTTPS decryption
• Malware protection and policy configuration
• Perform firmware upgrades, patches, and maintenance activities
• Analyze logs, packet captures, and security alerts
• Collaborate with SOC, TAC, and cross-functional teams
• Maintain documentation, SOPs, and configurations
• Participate in client calls and technical discussions