Sr. Network Architect, Security & Operations

At Greenbrier, we do the hard work that matters. The Greenbrier Companies (NYSE:GBX) is powering the movement of products around the world as a leading designer, manufacturer and supplier of freight rail transportation equipment and services.

 

Greenbrier’s heritage of hard work and industrial innovation is celebrated at every level of our organization. We structure our business to support teams that deliver innovative solutions for our customers while positively impacting the world around us.

 

Greenbrier’s success begins with people. We believe in supporting our global workforce through our unwavering attention to Safety, Quality, Respect for People and Customer Satisfaction. Our Inclusion, Diversity, Engagement, Access and Leadership (IDEAL) commitment is rooted in these values, which lead to a culture where employees are engaged and feel good about coming to work every day.

Summary

The Sr. Network Architect, Security & Operations will serve as a key technical leader, defining the strategic direction and future state of our network and security infrastructure. This role requires a visionary who can architect and govern the design of our network platforms while serving as the primary technical authority for our managed service provider (MSP). This is a hands-on role for a seasoned expert who can lead a complex, legacy environment through a complete security and modernization transformation.

 

Duties and Responsibilities

To perform this job successfully, an individual must be able to satisfactorily perform the following essential duties. Other duties may be assigned to address business needs and changing business practices.

 

Network Architecture & Security Leadership

• Define and govern the architecture, design standards, and lifecycle management for all network and security platforms, including routers, switches, and firewalls.
• Serve as the principal authority for all network security postures, designing and implementing enterprise-wide security frameworks.
• Pioneer the configuration and hardening of all deployed firewalls, including Cisco Meraki and Fortinet, setting a benchmark for secure network configurations.
• Establish the strategic roadmap for high-throughput WAN links and lead the technical direction of vendor relationships for transport services and dark fiber.
• Architect and oversee the implementation of organization-wide traffic isolation measures and cloud interconnects, setting a standard for multi-tenant security.
• Define the long-term strategy for modernizing our aging wireless infrastructure.

Strategic Planning & Technical Governance

• Lead the assessment and modernization of our data centers, establishing the gold standard for resilience, high-availability (HA), and disaster recovery (DR) preparedness aligned with Uptime Tier, NIST, and ITIL standards.
• Act as the primary technical liaison for the network MSP, providing governance and ensuring all operational activities align with our architectural vision and security policies.
• Pioneer the cloud suitability analysis using a modified 6-R framework, providing a definitive technical and financial justification for each workload's migration path.
• Drive cost optimization initiatives and provide the technical expertise required for executive-level decision-making.

Technical Execution & Mentorship

• Serve as the ultimate escalation point for complex networking issues, ensuring rapid resolution and establishing new procedures to prevent recurrence.
• Champion the adoption of infrastructure-as-code tools and network automation, setting the direction for technical best practices.
• Mentor and provide technical guidance to engineering teams across the organization, fostering a culture of operational excellence and security awareness.
• Lead the creation of all infrastructure documentation and SOPs, ensuring they meet the highest standards for operational handoff and knowledge transfer.

Qualifications

The following generally describes the requirements to perform the assigned duties successfully.

 

Minimum Qualifications

• Proven experience as a Principal Architect or equivalent, with a track record of defining and implementing enterprise-wide network and security strategies.
• Deep and demonstrable expertise in Cisco Meraki and Fortinet, with the ability to design complex, large-scale network and security solutions.
• Expert-level knowledge of network routing protocols (BGP, OSPF), WAN technologies, and network performance optimization.