Firewall Administrator - Dauphin County, PA/Hybrid

STI; Pennsylvania; Hybrid; USD 111,000 - 166,000; Part time

Benefits offered by this job

Hybrid work model

Job summary

STI is seeking a Firewall Administrator to design and optimize secure, scalable network solutions. The role requires collaboration across engineering and security teams to drive strategic initiatives.

The ideal candidate will have strong vendor-specific knowledge and hands-on experience with firewalls, IDS/IPS, and security protocols to align architecture with business needs.

Qualifications

• Experience designing secure network solutions for enterprise environments.
• Hands-on knowledge of firewall technologies and secure communications.
• Proven ability to lead cross-functional security design initiatives.

Responsibilities

• Design and architect secure network infrastructures aligned with security requirements.
• Evaluate and implement firewall technologies and secure protocols.
• Conduct risk assessments, vulnerability analyses, and threat modeling.
• Collaborate with engineering, operations, and security teams for integration.
• Lead incident response architecture and post-incident improvements.
• Provide guidance on vendor technologies and best practices.
• Document designs, standards, and procedures for stakeholders.

Skills

TCP/IP fundamentals

Subnetting

Firewall technologies

Security protocols

IDS/IPS

CLI scripting

Log analysis

SIEM tools

Palo Alto Networks

Check Point

VMware NSX-T

Zscaler

Wireshark

Tools

Wireshark

Network analyzers

Job description

Firewall Administrator
Dauphin County, PA/Hybrid
9+ Months
**Contractor must live in PA**
**Hybrid--2 days in the office, 3 days telework per week, may be adjusted according to the manager's direction and operational needs**

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