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IT Security Spec Principal - Sr. Firewall Engineer | Nashua, New Hampshire
IT Security Spec Principal - Sr. Firewall Engineer
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Nashua , New Hampshire

|

Remote

|

Contract

Nashua, New Hampshire

|

Remote

|

Contract

Job ID 73548|Posted Feb 23, 2026
JOB DESCRIPTION

Position Description : Senior Firewall Engineer
Job Description 
Seeking a highly skilled Senior Firewall Engineer to join our Cybersecurity Engineering Team. As a key member of our team, you will play a critical role in protecting our complex global network by implementing and managing state-of-the-art security tools. Key Responsibilities: • Design, implement, manage, and maintain network security systems, including firewalls and web proxy systems • Develop comprehensive documentation, including installation guides, network diagrams, configuration guides, and user tutorials • Research, prototype, and implement new security-related technology solutions to enhance our security posture • Provide backup support to other engineers with enterprise tools, including learning new tools and software solutions • Collaborate with our 24/7 Global Security Operations Center (GSOC) to support their needs and respond to user requests via phone, email, or incident management system • Analyze network traffic patterns, security requirements, and future growth requirements to inform technical assessments and risk mitigation strategies

Horizontal is proud to be an Equal Opportunity and Affirmative Action Employer. 

We seek to provide employment opportunities to talented, qualified candidates regardless of race, color, sex/gender including gender identity and/or expression, national origin, religion, sexual orientation, disability, marital status, citizen status, veteran status, or any other protected classification under federal, state or local law.

In addition, Horizontal will provide reasonable accommodations for qualified individuals with disabilities. If you need to request a reasonable accommodation in order to complete the application or interview process, please contact us.

All applicants applying must be legally authorized to work in the country of employment.

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