Senior Systems and Network Administrator

R.E. Mason; United States; Hybrid; CAD 90,000 - 120,000; Full time

Benefits offered by this job

ESOP

Retirement plan

Medical Insurance

Life Insurance

Paid leave

Parental leave

Company holidays

Career development

EAP

Hybrid work schedules

Job summary

Robert E. Mason & Associates, Inc. is seeking a Senior Systems and Network Administrator to design, secure, and support the company’s infrastructure, including servers, cloud services, networks, and cybersecurity.

The role involves architecture involvement, hands-on implementation, and ongoing optimization, with collaboration across security, applications, data, and operations teams, plus occasional travel and after-hours support.

Qualifications

• Five+ years in systems/network administration or similar role.
• Strong experience with AD, Azure, M365, Windows Server and Windows desktops.
• Knowledge of TCP/IP, DNS, DHCP, routing, switching, VLANs, firewalls, VPNs, secure remote access.
• Experience designing, documenting, implementing, and supporting system and network solutions.
• Experience with virtualization, backup/recovery, and shared-storage tech (VMware, Hyper-V, Veeam, Pure Storage).
• Familiarity with NIST or ISO 27001 security frameworks.

Responsibilities

• Design, implement, administer, and support server, cloud, virtualization, storage, backup, network, and security infrastructure.
• Develop practical architectures balancing security, reliability, scalability, cost, and supportability.
• Configure and support routing, switching, firewalls, wireless networks, VPNs, DNS, DHCP, and secure remote access.
• Monitor performance and troubleshoot complex system, network, and connectivity issues.
• Plan upgrades, patches, migrations, and configuration changes.
• Maintain least-privilege access, segmentation, logging, and security controls.
• Support hosted customer control systems and industrial software environments with secure access and connectivity.
• Automate repetitive tasks and lead infrastructure initiatives from design to operations.

Skills

Strong troubleshooting

Cross-functional collaboration

Documentation

Customer service

Security mindset

Education

Associates or Bachelor's in IT/CS

Tools

Active Directory

Microsoft Entra ID/Azure

Microsoft 365

Windows Server

VMware

Hyper-V

Veeam

Pure Storage

Firewall/VPN/VLAN knowledge

Job description

As a 100% Employee-Owned company, Robert E. Mason & Associates, Inc. believes our Associates are the foundation of both our customers’ and our success. Our strong company culture, and belief in continued investment in our Associates, has helped us realize long Associate tenures, as well as long lasting relationships with our customers.

R.E. Mason is an Emerson Impact Partner covering North Carolina, South Carolina, and Virginia. Emerson is the global leader of process systems and solutions. R.E. Mason provides industry-leading process equipment and service for process control, automation, safety, and reliability. The industries served include Chemical, Pharmaceutical & Life Sciences, Power & Utilities, Food & Beverage, and Pulp & Paper.

What R.E. Mason Offers Associates:

R.E. Mason is a 100% employee-owned company that offers a comprehensive, industry leading benefits package to all eligible Associates:

• Participation in the Employee Stock Ownership Program (ESOP)
• Retirement plan, including a Safe Harbor contribution
• Medical / Dental / Vision Insurance
• Employer paid Life Insurance and Long-Term Disability Insurance
• Generous paid leave options that include vacation time, sick leave, personal leave time, R.E. Mason Way Half Day, paid Jury Duty, and paid Bereavement Leave
• Paid Parental Leave
• Paid company holidays
• Career Development Program
• Retirement and Financial Wellness program
• Employee Assistance Program (EAP)
• Alternative/Hybrid Work Schedules

General Description

The Senior Systems and Network Administrator is responsible for designing, implementing, securing, and supporting the company’s infrastructure, including servers, cloud services, networks, cybersecurity platforms, and related technologies.

This role is ideal for a technology professional who enjoys both strategic thinking and hands-on execution. The successful candidate will contribute to architecture and solution design while remaining actively involved in implementation, troubleshooting, optimization, and support.

The environment includes business and cloud systems, customer control systems and other industrial software environments, cybersecurity and compliance requirements aligned with frameworks such as NIST and ISO, and customer-facing connectivity solutions such as secure remote access and network tunneling.

Specific Responsibilities

• Design, implement, administer, and support server, cloud, virtualization, storage, backup, network, and security infrastructure.
• Develop practical, right-sized system and network architectures that balance security, reliability, scalability, cost, and supportability.
• Configure and support routing, switching, firewalls, wireless networks, VLANs, VPNs, segmentation, DNS, DHCP, and secure remote access.
• Monitor infrastructure performance and availability; troubleshoot complex system, network, and connectivity issues through resolution.
• Plan and implement upgrades, patches, migrations, configuration changes, and technology refreshes.
• Actively support the protection of sensitive information by implementing and maintaining least-privilege access, system and network segmentation, secure administrative access, logging and monitoring, and other required security controls.
• Support hosted customer control systems and other industrial software environments, including secure access, availability, segmentation, backup, and coordination with application and control system specialists.
• Design and support secure network tunnels and remote-support connectivity for customer sites, including customer-billable engagements.
• Implement and maintain technical controls aligned with company policies and compliance frameworks such as NIST and ISO.
• Support vulnerability remediation, system hardening, access reviews, incident response, audit evidence, and continuous control improvement.
• Maintain system and network diagrams, standards, procedures, inventories, change records, and recovery documentation.
• Manage and test backup, disaster recovery, and business continuity capabilities.
• Collaborate across security, compliance, applications, data, operational technology, and business teams.
• Automate repetitive administration and monitoring activities where practical, serve as an escalation point, and lead infrastructure initiatives from design through operational support.
• Occasional travel and participation in after-hours maintenance, incident response, or on-call support may be required based on business and customer needs.

Qualifications

Required Education and Experience

• Five or more years of progressive experience in systems administration, network administration, infrastructure engineering, or a similarly broad infrastructure role.
• Strong experience with Active Directory, Microsoft Entra ID/Azure, Microsoft 365, Windows Server, and Windows desktop operating systems.
• Strong working knowledge of TCP/IP, DNS, DHCP, routing, switching, VLANs, firewalls, VPNs, wireless networking, segmentation, and secure remote access.
• Experience designing, documenting, implementing, and supporting system and network solutions.
• Experience with virtualization, backup and recovery, and shared-storage technologies; VMware, Hyper‑V, Veeam, and Pure Storage experience is beneficial.
• Working knowledge of cybersecurity practices including access management, system hardening, vulnerability management, logging and monitoring, and incident response.
• Experience working with formal security policies, documented controls, or compliance frameworks such as NIST or ISO 27001.
• Strong troubleshooting, project execution, documentation, communication, customer service, and cross-functional collaboration skills.
• Associate or bachelor’s degree in information technology, computer science, or a related field, or an equivalent combination of education, certifications, and relevant experience.

Preferred Experience/Competencies

• Infrastructure supporting industrial automation, operational technology, customer control systems, or other industrial software environments; Emerson DeltaV experience is beneficial.
• Hosting development or test environments for customers, partners, or contractors.
• Site-to-site VPNs, network tunnels, remote‑access solutions, or customer connectivity for consulting or billable‑service engagements.
• Compliance programs or audits associated with NIST SP 800-171, CMMC, ISO 27001, or similar frameworks.
• Relevant Microsoft, CompTIA, Cisco, VMware, AWS, or security certifications

RE Mason Companyis a federal contractor and, as such, isrequired to solicit the disability status and protected veteran status of candidates. Thus, you are required to answer self-identification questions as part of your application process. These questions are part of RE Mason’sAffirmative Action Plan and the completion of these questions will not have any effect on any consideration of your application materials.

In compliance with the ADA Amendments Act (ADAAA), if you have a disability and need to request an accommodation in order to apply for a position with RE Mason, please call our office at [phone].

This is a drug‑free workplace. Employment is contingent upon the successful completion of any required pre‑employment and, if applicable, ongoing drug testing, including testing mandated by customer site access requirements.