Senior Network Security Engineer

Overall Purpose Of The Job

International SOS is looking for a talented Sr. Network Security Engineer to help secure, design, operate, and maintain its IT network and security infrastructure for a key government contract. The ideal candidate would have a passion for solving technical problems and a drive for continually assessing and improving the technical environment in which they operate.

Key Responsibilities

• Maintains data network hardware and systems including Azure and Cisco on-premise networks.


• Investigates and resolves network and hardware issues of significance; researches, analyses, isolates and resolves errors.


• Assesses and evaluates current and future systems


• Monitor the IPS system for network intrusions and respond to incidents


• Ensure IPS system and signatures are kept up-to-date.


• Design networks on-premises or in the Azure government cloud as described in the project requirements and in line with architectural principles.


• Develop and monitor key network metrics for input into IT reviews/reporting and monitoring.


• Implement VPN and firewall rule, web filtering changes.


• Perform hardware and software upgrades of network infrastructure like Cisco switches, Checkpoint firewalls, F5 Load balancers.

Required Skills and Knowledge

• Cisco Nexus and Catalyst Switches


• Checkpoint Firewalls and Intrusion Prevention


• F5 Load Balancers


• Microsoft Azure Networking (Virtual networks, Routing, Subnets, Express Route, VPN, Network Security Groups)


• Networking Protocols/Concepts (Routing, VLAN, Subnetting, Load balancing, TCP/IP, DNS, HTTP, TLS, SSH)


• Script Experience a plus - PowerShell, Python, Bash, or similar

Required Competencies

• Goal/results focused.


• Strong ability to analyse and solve problems.


• Self-starter.


• Available to manage multiple competing demands.


• Comfortable with ambiguity.

Required Work Experience

• 5+ Experience designing, building, and operating networks


• 5+ Years Checkpoint Security


• 5+ Years Cisco networking


• 10+ Years in IT

Required Qualifications

• Bachelor’s degree in Information Technology, Information Security, or equivalent 4 years additional experience in network security engineering.


• Cisco Certified Network Associate (CCNA)


• Azure Network Engineer Associate preferred 


• This position does require a US Citizen who can obtain Tier 3/ Level II IT Security Clearance (previously referred to as ADP II Clearance) after being offered a position and maintaining clearance after starting with International SOS.

Required Languages

• English


• Any second language preferred.

Travel / Rotation Requirements

• Not Required


• On-call/after-hours support required as needed.