Description & Requirements
Maximus is seeking a highly skilled Firewall Engineer to support the DISA Compartmented Enterprise Services Office (CESO) program. This role is responsible for designing, implementing, and sustaining firewall and network security solutions within a high-security, mission-critical environment supporting DoD and Intelligence Community customers.
The ideal candidate will be a seasoned professional with extensive experience in firewall engineering, network security operations, and cloud/virtualized environments. The Firewall Engineer will play a key role in improving the security posture, performance, and reliability of enterprise firewall and load balancer systems while supporting modernization initiatives across the CESO platform.
This role is on-site, five days a week and requires an active TS/SCI security clearance.
Maximus TCS (Technology and Consulting Services) Internal Job Profile Code: TCS136, T4, Band 7
Job-Specific Essential Duties and Responsibilities:
- Identify and remediate firewall misconfigurations, conflicting rules, and security gaps to improve overall security posture and performance.
- Provide Tier 3 support to network operations teams for firewall and load balancer-related issues.
- Maintain hardware and software components at vendor-supported levels to ensure operational integrity.
- Support mission-critical Continuity of Operations (COOP) requirements.
- Conduct regular firewall assessments on enterprise and customer devices and develop reports with recommended improvements.
- Develop and support performance and traffic utilization reports for network devices.
- Contribute to After Action Reports (AARs) and operational documentation.
- Provide subject matter expertise for Palo Alto firewall technologies within the enterprise architecture.
- Collaborate with customer stakeholders to define objectives, roadmap strategies, and architecture improvements.
- Evaluate current technologies and processes to identify gaps and recommend future cybersecurity strategies.
- Participate in technical meetings and mission partner working groups supporting enterprise operations.
- Ensure compliance with DoD STIGs, DISA policies, and JSIG security requirements.
Job-Specific Minimum Requirements:
- Active Top Secret clearance with SCI eligibility.
- DoD 8570 IAT Level II certification (e.g., Security+ or equivalent).
- Strong experience administering enterprise Windows Server environments.
- Deep knowledge of Windows services (Active Directory, DNS, Group Policy, etc.).
- Demonstrated ability to troubleshoot and resolve complex infrastructure issues.
- Strong written and verbal communication skills.
Preferred Skills & Qualifications:
- Bachelor's degree in Computer Science, Information Systems, or related field (or equivalent experience).
- 8+ years of relevant IT systems administration experience (or Master's with 6-10 years).
- Proven experience supporting DoD or federal environments.
- Experience working in classified environments with strict security requirements.
- Experience serving as a technical SME in enterprise-scale Windows environments.
- Working knowledge of Linux/Unix systems administration. [careers.leidos.com]
- Familiarity with DISA STIGs, RMF, and other federal cybersecurity frameworks.
- Experience with system automation, scripting (PowerShell), and configuration management tools.
- Strong leadership and mentoring capabilities.
- Ability to operate in fast-paced, mission-driven environments with minimal supervision.
- Experience supporting hybrid or multi-OS enterprise environments.
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Minimum Requirements
TCS136, T4, Band 7
Minimum Salary
$
116,500.00
Maximum Salary
$
165,000.00
