Senior Network Security Engineer

Job Description

Senior Network Security Engineer

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10451 Clay Road

Houston, United States

Posting Start Date: 6/5/26

Field of Work: IT / Technology

Req Id: 701

Purpose & Scope:

The Senior Network Security Engineer will design, build, optimize, and maintain secure network environments across TGS's global footprint and be responsible for protecting onshore data centers, cloud environments, and maritime operations by implementing and managing advanced security controls - particularly those within Palo Alto Networks technologies.

Our ideal candidate is someone who combines deep technical knowledge with a strong security mindset and thrives in a diverse, international environment. This is a senior technical role that will hold significant influence on TGS's global security posture and provide opportunities to work with modern security technologies across hybrid environments.

Key Responsibilities:

• Design, implement, and maintain secure network architectures globally, with a focus on Palo Alto NGFW, Panorama, and security services.
• Lead network security initiatives, including segmentation, Zero Trust design, and secure connectivity across offices, cloud environments, and the marine acquisition fleet.
• Monitor and tune network security infrastructure for performance, resilience, and threat mitigation.
• Troubleshoot complex network and security issues across hybrid environments.
• Conduct security assessments, rulebase reviews, and vulnerability remediation efforts.
• Develop and maintain policies, standards, diagrams, operational guides, and documentation.
• Collaborate with Cloud, SOC, Support, Network, and Infrastructure teams to ensure end-to-end security.
• Support incident response processes by providing network security expertise.
• Contribute to cross‑team knowledge sharing.

Key Competencies

Required:

• 5+ years of hands‑on experience in network security engineering.
• Expert-level experience with Palo Alto Networks technologies.
• Strong knowledge of networking protocols (TCP/IP, BGP, OSPF, VPNs, SSL/IPSec).
• Proficient in core WAN/LAN networking fundamentals, including routing, switching, subnetting, and VLANs.
• Proven experience designing secure networks and security controls.
• Strong analytical and troubleshooting skills in complex environments.
• Good understanding of modern cybersecurity practices and threat landscapes.
• Ability to obtain national security clearance in a NATO country

Preferred:

• Master's degree in network security or similar field
• Palo Alto certifications (PCNSE strongly preferred).
• Experience securing cloud platforms (Azure, AWS, or GCP).
• Automation or scripting skills (Python, Ansible, APIs).
• Experience in maritime, OT, or globally distributed networks.
• Familiarity with SIEM/SOAR platforms and threat monitoring workflows.

Soft Skills:

• Strong communicator who can collaborate across technical and non‑technical teams.
• Demonstrates ownership, accountability, and the ability to work independently.
• Structured, methodical, and detail-oriented approach to security operations.
• Comfortable operating in a global enterprise supporting mission critical systems.
• Flexibility to work early hours for global alignment efforts, in particular EU.

TGS is an Equal Opportunity Employer. We do not discriminate on the basis of race, color, religion, sex (including pregnancy, sexual orientation, or gender identity), national origin, age, disability, genetic information, veteran status, or any other protected status under federal, state, or local law.

We are committed to providing reasonable accommodations in our application process for individuals with disabilities. If you require an accommodation during the application or interview process, please contact us at hr@tgs.com.

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