Senior Network Engineer

Doral, Florida

Mandatory Requirements

To be considered for this position, candidates must meet the following minimum requirements:

• Active Top Secret/Sensitive Compartmented Information (TS/SCI) security clearance
• Ability to work onsite in Doral, Florida
• Minimum 9 years of total Information Technology experience
• Minimum 5 years of hands-on Network Engineering experience
• Experience configuring, maintaining, and troubleshooting Cisco routers, switches, and firewalls
• Hands-on experience with Cisco Identity Services Engine (ISE)
• Experience supporting classified DoD networks, including SIPRNet, NIPRNet, and JWICS
• Experience implementing, maintaining, or remediating DISA Security Technical Implementation Guides (STIGs)
• Working knowledge of Risk Management Framework (RMF), NIST cybersecurity frameworks, and DoD cybersecurity requirements
• Current DoD 8570 IAT Level II certification

Position Overview

Sandy Mac Evolution LLC is seeking a highly experienced Senior Network Engineer to support mission-critical Department of Defense operations in Doral, Florida. This position requires a seasoned network professional capable of walking into a secure enterprise DoD environment and independently managing classified network infrastructure with minimal supervision.

The Senior Network Engineer will support the design, configuration, security, maintenance, troubleshooting, and optimization of enterprise network systems across classified and unclassified environments. The ideal candidate will have deep technical expertise in Cisco networking technologies, classified network operations, DISA STIG compliance, RMF support, and secure DoD enterprise infrastructure.

This is not a basic network administration role. The selected candidate must be capable of supporting complex network environments, maintaining operational readiness, assisting with cybersecurity compliance, and providing technical guidance to junior engineers and Network Operations Center personnel.

Key Responsibilities

• Design, configure, maintain, and troubleshoot secure enterprise network infrastructure in support of DoD mission requirements.
• Configure and support Cisco routers, switches, firewalls, and related enterprise network equipment.
• Administer and maintain Cisco Identity Services Engine (ISE) for authentication, access control, and network security enforcement.
• Support classified network environments, including SIPRNet, NIPRNet, and JWICS.
• Maintain secure network operations in accordance with DoD policies, cybersecurity requirements, and mission priorities.
• Implement, maintain, and remediate DISA Security Technical Implementation Guides (STIGs) for network devices and infrastructure.
• Configure, support, and troubleshoot Cisco IOS, NX-OS, ASA firewalls, routing protocols, TCP/IP, DNS, DHCP, and enterprise network services.
• Support firewalls, IDS/IPS, network access control, authentication systems, and risk mitigation activities.
• Perform network performance analysis, root cause analysis, and issue resolution across enterprise environments.
• Assist cybersecurity teams with RMF documentation, ATO support, compliance activities, vulnerability mitigation, and NIST framework alignment.
• Support secure network architecture, operational security, and classified infrastructure protection.
• Collaborate with Information System Security Officers, system administrators, cybersecurity personnel, and mission stakeholders.
• Provide technical support for network modernization, upgrades, migrations, and infrastructure improvement efforts.
• Support troubleshooting and sustainment of mission-critical network systems during outages, maintenance windows, and operational events.
• Mentor junior Network Engineers, administrators, and Network Operations Center staff.
• Provide senior-level technical leadership and recommendations to improve reliability, security, and performance.
• Maintain accurate network documentation, diagrams, configurations, and technical records as required.

Required Qualifications

• Active TS/SCI clearance.