Sr Network Systems Engineer

At CGS Business Solutions, we’re dedicated to helping skilled IT and business professionals take the next meaningful step in their careers. Whether you're exploring project-based consulting roles or seeking a long-term position, we connect you with opportunities that align with your expertise, your goals, and your growth trajectory.

Backed by deep industry insight and our proven TalentFlow™ Framework, we ensure every role we present is thoughtfully matched to your skills, passions, and career ambitions. If you're ready for a role that challenges you and moves your career forward, we’re currently partnering with leading organizations to fill the following opportunity :

Senior Network Systems Engineer

The Senior Network Systems Engineer plays a mission-critical role in building and securing the network foundation that powers operations across multiple sites. This leader will architect, implement, and evolve a modern, resilient network environment—balancing performance, availability, and security to enable business growth.

This position calls for deep expertise in network design, Zero Trust principles, and cross-platform security controls. You will shape the strategy, drive architecture decisions, and lead complex initiatives such as SD-WAN modernization, IT / OT convergence, and cloud-connected edge environments. Working alongside Security, Compliance, and Infrastructure teams, you will be a primary decision-maker and escalation point for high-impact issues, performance tuning, and network resilience.

If you’re energized by designing future-ready networks, improving uptime, and strengthening cybersecurity posture—this role offers both influence and ownership.

Key Responsibilities

Architecture, Design & Deployment

Engineer and deploy secure LAN, WAN, SD-WAN, and SASE solutions across multiple locations.

Implement Zero Trust Architecture and Cisco ISE to enable identity-driven access and continuous verification.

Lead modernization initiatives across Cisco Catalyst & Nexus switching, Palo Alto firewalls, and cloud connectivity.

Performance, Monitoring & Optimization

Maintain and optimize network infrastructure using SolarWinds Orion and Infoblox (DNS / DHCP / IPAM).

Conduct lifecycle refreshes, configuration updates, and performance hardening to align with best practices.

Continuously tune systems for high availability, reliability, and reduced downtime.

Troubleshooting & Incident Leadership

Serve as the senior escalation point for complex network issues—rapid diagnostics and resolution expected.

Collaborate with cross-functional teams to accelerate root-cause identification and ticket closure.

Security, Compliance & Zero Trust

Manage security controls, firewall policies, and access governance across critical network assets.

Perform ongoing vulnerability assessments, policy audits, and compliance checks for regulatory readiness.

Documentation, Standards & Reporting

Create detailed SOPs, network diagrams, configuration baselines, and DR / BC documentation.

Deliver recurring reports on performance, posture, and project progression for leadership visibility.

Project Leadership & Vendor Coordination

Own full-cycle execution of initiatives like IT / OT integration, SD-WAN expansion, and cloud edge projects.

Direct vendors, technology partners, and service providers to ensure cost-effective and scalable solutions.

Required Experience

7+ years of hands-on engineering experience supporting enterprise-level network environments.

Bachelor’s Degree in Computer Science or related discipline (or equivalent practical experience).

Core Skills & Competencies

Strategic & Personal

Strategic thinker with the ability to roadmap long-term network growth and resilience.

Communicator who can influence stakeholders, translate complexity, and drive clarity across teams.

Collaborative mindset with a focus on ownership, accountability, and continuous improvement.

Professional

BC / DR and failover planning experience; comfortable running recovery simulations.

Strong ITIL / ITSM background—incident, problem, and change management (ServiceNow preferred).

Skilled in creating documentation that supports audit trails, compliance, and cross-team knowledge transfer.

Technical Expertise

Network Security

Cisco ISE, Zero Trust frameworks, Palo Alto firewalls, GlobalProtect VPN, Cortex XDR.

Cloud & Hybrid Connectivity

SD-WAN platforms (VeloCloud preferred), secure Azure / AWS connectivity, SASE solutions.

Monitoring & Administration

Infoblox DDI (DNS, DHCP, IPAM), SolarWinds Orion (alerts, reporting, optimization).

Infrastructure

Cisco Catalyst & Nexus switching, OSPF / BGP routing, Ruckus SmartZone wireless management.

About CGS Business Solutions

CGS Business Solutions is a nationally recognized leader in IT staffing and consulting, delivering top-tier talent across Applications, Cloud & Infrastructure, Cybersecurity, Data & AI, and Engineering. As a multi-year INC 5000 winner and one of California’s Best IT Recruitment Firms , we’re known for combining boutique-level service with enterprise-grade results.

We’re also proud to be named one of the Orange County Business Journal’s Fastest Growing Companies , earning the distinction for five consecutive years as we continue to expand into new markets across the U.S. Companies trust CGS to attract, engage, and retain elite technology talent—giving them the advantage they need to lead with confidence in a rapidly evolving digital landscape