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# Firewall Engineer

- **Company:** TEKSYSTEMS INC.
- **Location:** Irving, TX, United States
- **Experience:** Experienced
- **Salary:** $83,200.0 - $93,600.0
- **Contract:** Temporary contract
- **Skills:** Microsoft Windows, Application Firewall, Bash Shell, Unix, Cyber Security, Computer Networks, Linux, Perl (Programming Language), MySQL, Network Architecture, Network Connections, IT Architecture, Firewalls (Computer Science), Firewall Services Module
- **Published:** October 14, 2026
- **Apply:** https://www.thejobnetwork.com/job/b935e7c9-bb05-4282-831d-3a3cb9725c2d/firewall-engineer

## About the Role

Ability to work independently with minimal direction to fulfill standard service requests

Ability to work with a global customer and technical audience

Functional level understanding of firewall administration, network traffic collection tools, and overall understanding of network infrastructure

Manage, participate in, or directly work on any additional projects, assignments, or initiatives assigned by management

Required Qualifications:

High level of initiative and accountability

2-4 years of job-related experience (network and/or IT)

Strong diagnostic and analytical skills

Strong communication and presentation skills

Ability to work independently with minimal direction to fulfill standard service requests

An understanding of networking concepts

Segmentation

DMZ

Least privilege access control

Application or Infrastructure experience

Experience with Windows, UNIX, Linux, or Networking

Desired Qualifications:

Unix/Windows or network administrative experience

Application/Infrastructure architecture experience

One or more of the following preferred: CISSP, CISA, GIAC GPPA or equivalent

Knowledge of Perl, bash, Linux, MYSQL

Understanding of information security and risk analysis processes (e.g. threat modeling)

College/University degree, Strong communication and presentation skills

High level of initiative and accountability, Individual compensation offered for this position within this range will depend on many factors, including qualifications, skills, relevant experience, job knowledge, geographic location, internal equity, and other pertinent job-related factors.

## Description

The Team is responsible to protect the enterprise by reviewing requests for ingress and egress access. This position requires the ability to help align requests with existing policies and also the ability to help educate users on standard security methodology. This position is responsible to review requests and ensure initial compliance to network connectivity models and policies.

Job Duties/Responsibilities may include, but are not limited to:

Processing of requests for firewall rules or other Border Protection Team service offerings. The candidate will be expected to take accountability for managing multiple concurrent requests within multiple ticket queues and ensuring compliance to documented SLA agreements.

Collaborate with firewall rule requesters, application teams, security engineers, enterprise architects, and other team members to ensure requests align with Caterpillar policies

Review and provide counsel for requests to help align them with the enterprise direction, policies, or enhance security around a solution

Understand Enterprise Security Directives, network models, and enterprise architecture patterns to ensure the alignment of a request

Offer alternative solutions if a request does not align with current policies

Manage the completion of own work assignments and coordinate work with other team members

Work with Linux, MySQL, Perl and network tools to analyze requests