Firewall Administrator - Dauphin County, PA/Hybrid

STI; Pennsylvania; Hybrid; USD 90,000 - 120,000; Part time

Job summary

STI in Dauphin County, PA is seeking a Firewall Administrator to design and optimize secure, scalable network solutions across enterprise environments.

The role requires strong technical foundations, vendor-specific knowledge, and collaboration across teams to drive security initiatives and incident response, with hybrid work arrangement.

Qualifications

• Strong understanding of TCP/IP and subnetting.
• Expertise in firewall technologies (stateful, next-gen).
• Proficiency in IPSec and SSL/TLS protocols.
• Experience with Wireshark and network analyzers.
• Hands-on IDS/IPS experience.
• CLI and scripting proficiency.
• Familiarity with log analysis and SIEM tools.

Responsibilities

• Design and architect secure network infrastructures.
• Evaluate firewall tech and IDS/IPS implementations.
• Perform risk assessments and threat modeling.
• Collaborate with cross-functional teams to integrate solutions.
• Lead incident response architecture and post-incident reviews.
• Provide technical guidance on vendor technologies.
• Document architecture designs and standards.

Skills

TCP/IP

Subnetting

Firewall tech

IPS/IDS

SSL/TLS

Wireshark

SIEM

CLI scripting

Log analysis

Tools

Palo Alto Networks

Check Point

VMware NSX-T

Zscaler

Job description

• Hybrid--2 days in the office, 3 days telework per week, may be adjusted according to the manager's direction and operational needs**

Firewall Administrator

Dauphin County, PA/Hybrid

9+ Months

**Contractor must live in PA**

This role will be responsible for designing and optimizing secure, scalable, and resilient network solutions across enterprise environments. The ideal candidate will possess a strong technical foundation, vendor-specific knowledge, and the ability to collaborate across cross-functional teams to drive strategic initiatives.

Key Responsibilities

• Design and architect secure network infrastructures aligned with business and security requirements.
• Evaluate and implement firewall technologies, intrusion detection/prevention systems, and secure communication protocols.
• Conduct risk assessments, vulnerability analyses, and threat modeling to inform architectural decisions.
• Collaborate with engineering, operations, and security teams to ensure seamless integration of network and security solutions.
• Lead incident response architecture and contribute to post-incident reviews and improvements.
• Provide technical leadership and guidance on vendor-specific technologies and best practices.
• Document architecture designs, standards, and procedures for internal and external stakeholders.

Required Technical Skills

• Strong understanding of network fundamentals (TCP/IP, subnetting).
• Expertise in firewall technologies (stateful inspection, next-gen firewalls, Layer 7 filtering).
• Proficiency in security protocols (IPSec, SSL/TLS).
• Experience with network monitoring tools (Wireshark, network analyzers).
• Hands-on knowledge of IDS/IPS systems.
• Proficiency with command line interfaces and scripting.
• Familiarity with log analysis and SIEM tools.

Security Knowledge

• Solid grasp of cybersecurity principles and frameworks.
• Understanding of threat intelligence, attack vectors, and mitigation strategies.
• Experience in risk assessment and vulnerability management.
• Knowledge of incident response procedures and lifecycle.

Vendor-Specific Expertise

• Palo Alto Networks
• Check Point
• VMware NSX-T
• Zscaler