Tier III/Network Engineer with Security Clearance

The Tier 3 / Network Engineer will provide advanced technical support, troubleshooting, systems administration, and support end users in application specific training in support of a U.S. Government customer. The position will serve as an escalation point for complex technical issues and will work closely with system administrators, developers, engineers, government stakeholders, and other technical teams.
The ideal candidate is a technically capable and self-motivated person who can independently troubleshoot issues, identify root causes, implement solutions, and document technical findings. This is an opportunity for an administrator who is ready to operate at the Tier 3 level while continuing to develop their technical expertise.

Key Responsibilities
Provide technical support and troubleshooting for enterprise IT systems and services. Assist in training end-users on the proper use of IT systems and applications. Diagnose and resolve complex application, software, network, and infrastructure issues. Analyze system performance, logs, alerts, and other technical information to identify root causes and corrective actions. Develop and maintain technical documentation, procedures, knowledge articles, and system diagrams.

Coordinate with other technical teams and government stakeholders to resolve incidents and technical issues. Support cybersecurity requirements, vulnerability remediation, system hardening, and security compliance activities. Participate in change management, configuration management, incident management, and problem management processes. Provide technical recommendations and communicate issues and solutions clearly to both technical and non-technical stakeholders. Required Qualifications
Active DoD / DoW Secret security clearance and ability to maintain the clearance.

CompTIA Security+ certification or equivalent DoD-approved cybersecurity certification.
3+ years of experience in systems administration, networks, help desk support, or a related IT discipline. Strong troubleshooting and problem-solving skills. Experience supporting enterprise IT environments. Ability to analyze technical problems, determine root cause, and implement effective solutions. Experience with system monitoring, logging, ticketing, and configuration management tools. Working knowledge of switches, routing, and system architectures.

Ability to work independently while effectively collaborating with technical teams and government customers. Strong written and verbal communication skills.

Preferred Qualifications
5+ years of relevant IT/systems engineering experience. Experience supporting U.S. Government or DoD customers. Experience in a Tier 3 or escalation support environment. Experience with cloud environments such as AWS, Azure, or similar platforms. Experience with virtualization technologies. Experience with hands-on networking and systems administration. Experience with Active Directory, Group Policy, Microsoft 365, or enterprise identity services. Familiarity with cybersecurity frameworks, RMF, STIGs, vulnerability management, and security compliance.

ITIL, Network+, CCNA, Microsoft, cloud, or other relevant technical certifications. Experience working in an Agile, DevSecOps, or IT service management environment. Experience with DoD vulnerability reporting applications, such as CMRS, COAMS, and IAVM. Desired Candidate Profile
The ideal candidate is a hands-on, technically curious administrator capable of learning new application software and systems quickly.

The candidate should be comfortable researching unfamiliar issues, working through problems methodically, escalating appropriately when necessary, and documenting solutions for the broader team. This position is intended for a mid-level engineer. Candidates with approximately 3–5+ years of relevant experience who demonstrate strong technical aptitude and the ability to work independently are encouraged to apply.