Network Security Administrator
Confirmed on the employer's own hiring board on Nov 14, 2026. First seen by Alion on Nov 13, 2026. Greif scores B on the Alion truth index.
Greif is a global leader in performance packaging located in 40 countries. The company delivers trusted, innovative, and tailored solutions that support some of the world's most in demand and fastest-growing industries.
With a commitment to legendary customer service, operational excellence, and global sustainability, Greif packages life's essentials - and creates lasting value for its colleagues, customers, and other stakeholders.
Learn more about the company's Customized Polymer, Sustainable Fiber, Durable Metal, and Integrated Solutions at www.greif.com and follow Greif on Instagram and LinkedIn.
OUR VISION:
To Be the Advantage That Helps Our Customers Win.
OUR PURPOSE:
Creating packaging solutions for life’s essentials.
Job Requisition #:
036135 Network Security Administrator (Open)Job Description:
The Sr. Engineer, Network Operations provides technical expertise in the management of LAN/WAN networks. This role is responsible for the implementation, support, and evaluation of network infrastructure and leads efforts related to testing, quality assurance, configuration, installation, and support to ensure the seamless and timely delivery of network services. The position requires close collaboration with the broader team and active participation in day-to-day operations. The ideal candidate is hands-on, adaptable, and willing to step in as needed to support operational priorities.
Additionally, the Sr. Engineer, Network Operations supports network-related activities associated with mergers and acquisitions (M&A), as needed.
Responsibilities:
- Collaborate with network team members to ensure the smooth and reliable operation of network infrastructure, supporting business objectives and processes.
- Partner with team members and business stakeholders to define network requirements, support business goals, and resolve technical challenges.
- Implement and enhance network services and infrastructure to meet evolving business and operational needs.
- Evaluate the effectiveness and efficiency of existing systems and processes; develop and implement strategies to improve or optimize them.
- Create and maintain comprehensive documentation related to network configurations, systems, services, and processes.
- Coordinate and execute in-depth testing, including end-user reviews, for modified and new systems.
- Monitor and assess network performance; prepare and deliver performance statistics and reports.
- Support, maintain, and optimize the global Cisco ISE deployment.
- Support, maintain, and optimize the global Cisco SD-WAN deployment.
- Partner with subject matter experts to support and optimize global Palo Alto deployments, including on-premises firewalls and the Prisma Access SASE solution for mobile users and remote networks.
- Assist with daily operations by resolving incidents, fulfilling service requests, and providing technical guidance and knowledge sharing across the team.
- Support network-related integration, transition, and operational activities associated with mergers and acquisitions (M&A), as needed.
- Perform other duties as assigned.
Education and Experience:
- Bachelor’s degree in Information Technology, Computer Science, Cybersecurity, or a related field preferred; equivalent professional experience may be considered.
- Typically, 5-10 years of experience supporting enterprise network infrastructure and network security technologies.
- Experience administering LAN/WAN environments in a global or distributed organization.
- Experience with Cisco networking, Cisco ISE, SD-WAN, Palo Alto firewalls, and Prisma Access is strongly preferred.
- Experience with network access control, firewall administration, VPNs, routing, switching, segmentation, and secure remote access.
- Experience supporting manufacturing, operational technology, or geographically distributed environments is a plus.
- Experience supporting mergers, acquisitions, divestitures, or large-scale infrastructure transitions is preferred.
Knowledge and Skills:
- Excellent verbal and written communication skills.
- Proven ability to plan and execute assigned projects and tasks effectively.
- Strong organizational skills with exceptional attention to detail and accuracy.
- Ability to work both independently and collaboratively in a team environment.
- Advanced knowledge of IT networking hardware, software, and their impact on business processes.
- Cisco CCNP certification is preferred; Palo Alto certification is a plus.
At Greif, we believe that our colleagues are the center of our success. Our Total Rewards have a comprehensive focus on well-being and offer a competitive package that enables you to thrive, be engaged, and reach your full potential.
Protect Yourself From Scams: We value the integrity of our recruitment process and prioritize the well-being of our candidates. While you may find Greif job postings on various platforms, all legitimate opportunities can be verified on our official Careers page at www.greif.com. All communication from Greif regarding job opportunities will also come from an @greif.com email address. If you have concerns about the legitimacy of a job posting, receive an unsolicited job offer or suspect fraudulent activity, please contact us for verification via this link Contact Us - Greif.
EEO Statement:
We offer a competitive salary, excellent benefits and opportunity for growth. Greif is an equal opportunity employer. We will not discriminate against any applicant or employee on the basis of sex, race, religion, age, national origin, color, disability, veteran status or any other any other legally protected characteristic.
For more information read Greif’s Equal Opportunity Policy.