Senior Firewall Administrator

Ses Corporation; Alexandria (VA); On-site; USD 110,000 - 150,000; Full time

Benefits offered by this job

Medical

Dental

Vision

AD&D

STD

LTD

Company paid Life Insurance

401k with employer contribution

Paid Time Off

Pet Insurance

Job summary

Ses Corporation in Alexandria, Virginia, seeks an IT Infrastructure specialist responsible for Tier 1–3 support, incident resolution, monitoring, and lifecycle management of network, server, and firewall infrastructure. The role centers on deploying, configuring, and maintaining Palo Alto firewalls to ensure performance, security, and high availability.

You will document configurations, support cross‑team security initiatives, mentor junior staff, and implement governance aligned with ITIL/ISO

Qualifications

• 5 years of experience in IT infrastructure and firewall administration.
• Bachelor's degree in a related field is required.
• Public trust security clearance is required.

Responsibilities

• Monitor and optimize network performance and resource usage.
• Lead installation, configuration, and maintenance of Palo Alto firewall devices and cloud firewall configurations.
• Manage Palo Alto platforms and services (PAN-OS, VPN, Prisma Access, GlobalProtect) across lifecycle.
• Diagnose and resolve complex firewall issues (connectivity, performance, security).
• Maintain security by applying patches and configurations; document procedures and policies.

Skills

Firewall administration

Network security

Routing & Switching

Policy management

Scripting basics

Documentation

Education

Bachelor's degree in computer science / information systems

Tools

Palo Alto firewalls

Cisco ASA/Firepower

Fortinet

Check Point

Juniper SRX

Linux/Windows administration

Splunk/QRadar/ELK

Job description

The contractor shall provide IT Infrastructure support services, which includes Tier 1 Help Desk, Tier 2 End User Support, Tier 3 Server, Platform, and Network Infrastructure Support and Engineering. Services shall include, but are not limited to, technical assistance for hardware, software, and network issues; incident and problem resolution; service request management; infrastructure monitoring and support; hardware and software lifecycle support; and management of escalation across all tiers.

Position Description: Responsible for managing and maintaining the organization's (currently PaloAlto based) firewall infrastructure. This role involves overseeing the deployment, configuration, and support of PaloAlto firewall devices, ensuring optimal performance, security, and availability. This position requires strong knowledge of PaloAlto firewall technologies, excellent troubleshooting skills, and familiarity with network security solutions.

Requirements

• Monitoring and optimizing the performance of the network, ensuring efficient resource allocation and minimal downtime.
• Leading the installation, configuration, and maintenance of PaloAlto firewall devices as well as Cloud firewall configurations.
• Manage Palo Alto firewall platforms and services, including PAN-OS, VPN, Prisma Access, and GlobalProtect, ensuring lifecycle support through end-of-support timelines.
• Monitoring and optimizing the performance of firewall systems, ensuring efficient resource allocation and minimal downtime.
• Diagnosing and resolving complex firewall issues, including connectivity, performance, and security problems.
• Ensuring the security of the network by applying patches, updates, and security configurations to PaloAlto devices.
• Maintaining comprehensive documentation of firewall configurations, procedures, and policies.
• Working closely with other IT teams to support network security needs and integrate firewall solutions with other systems.
• Providing guidance and mentorship to junior network and firewall administrators and other IT staff.

Required Skills

• 5 years of experience
• Bachelor's degree in computer science, Information Systems, Engineering, or related field
• Public trust security clearance
• Firewall Administration: Expertise configuring, managing, and troubleshooting enterprise firewalls (e.g., Palo Alto, Cisco ASA/Firepower, Fortinet, Check Point, Juniper SRX).
• Network Security: Strong understanding of network security principles, including segmentation, VPNs (IPSec/SSL), NAT, ACLs, and IDS/IPS.
• Routing & Switching: Working knowledge of routing protocols (BGP, OSPF, EIGRP) and Layer 2 technologies.
• Policy Management: Ability to design, implement, and optimize security policies, objects, and rulesets while maintaining compliance and minimizing overlap/conflicts.
• Security Monitoring & Incident Response: Experience with log analysis, packet captures, and network traffic inspection for threat identification and remediation.
• SIEM Integration: Familiarity with tools like Splunk, QRadar, or ELK for centralized event monitoring and alert correlation.
• Operating Systems: Proficiency in administering Linux/Unix and Windows Server environments.
• Change Management: Experience following structured change control processes and documentation in ITIL or ISO environments.
• Scripting & Automation: Basic to intermediate scripting (Python, PowerShell, or Bash) for automating configuration or monitoring tasks.
• Documentation: Ability to create and maintain detailed network diagrams, firewall rule documentation, and standard operating procedures.

Preferred Skills

• A PaloAlto Networks Certified Network Security Engineer (PCNSE) certification is preferred.
• Cloud Security: Experience with cloud firewalls and network security configurations in AWS, Azure, or Google Cloud.
• Next-Gen Firewall (NGFW) Technologies: Advanced knowledge of threat prevention, URL filtering, SSL decryption, application control, and user-ID mapping.
• Zero Trust Architecture: Understanding of zero trust principles and micro segmentation strategies.
• Network Access Control (NAC): Experience integrating firewalls with NAC solutions (e.g., Cisco ISE, Aruba ClearPass).
• Load Balancing & Proxy Technologies: Familiarity with F5, Citrix Netscaler, or reverse proxy systems.
• Certifications: Palo Alto Networks Certified Network Security Engineer (PCNSE) Cisco Certified Network Professional - Security (CCNP Security) Fortinet NSE 4-7 CompTIA Security+ / CySA+ / CASP+ Certified Information Systems Security Professional (CISSP) or equivalent
• Experience in Regulated Environments: Understanding of compliance requirements (FISMA, FedRAMP, NIST 800-53, PCI-DSS, HIPAA).

Benefits

SES provides a competitive salary and the following benefits:

• Medical
• Dental
• Vision
• AD&D
• STD
• LTD
• Company paid Life Insurance
• 401k with employer contribution
• Paid Time Off
• Pet Insurance