Network Administrator

Certex-USA-In; Houston (TX); On-site; USD 75,000 - 85,000; Full time

Benefits offered by this job

Uniforms Provided

Boot Allowance

Vacation & Sick Leave

Holidays

401k with Match

Medical, Dental, Vision

Life Insurance

Job summary

CERTEX USA, LLC seeks an experienced Network Administrator in Houston to keep branch networks and communications running smoothly. You will install, monitor, and troubleshoot firewalls, switches, and wireless systems across locations, coordinating with ISPs and vendors to ensure uptime.

The role emphasizes security, documentation, and on-call readiness, with a strong collaboration across IT teams to support projects and keep employees connected.

Qualifications

• Bachelor's degree or 4+ years of related experience.
• 3–5 years of hands-on firewall admin in a multi-site environment; SonicWall preferred.
• Experience with branch networks and security across multiple locations.
• Industry experience in construction/oil & gas or similar heavy-industry sectors preferred.

Responsibilities

• Set up and maintain network equipment across branch locations.
• Manage firewalls, switches, and wireless systems for reliability.
• Troubleshoot network issues beyond the IT Service Desk.
• Support backup Internet connections to prevent outages.
• Monitor network performance and document changes.
• Coordinate with ISPs/vendors to install services.
• Assist with network security improvements across teams.
• Maintain network diagrams and records and ensure reliable communications.

Skills

Firewall admin

Multi-site networking

VPN & security

Vendor coordination

On-call support

Remote monitoring

Documentation

Cloud networking

VoIP knowledge

Network security

Troubleshooting

Education

Bachelor's in MIS/CIS

4+ years experience

Tools

SonicWall

Cambium

Aruba

Ubiquiti

Meraki

Job description

Description

CERTEX USA is looking for an experienced Network Administrator in Houston to join our Team!

Job Summary:

A Network Administrator helps keep Ascent Lifting's computer networks, internet connections, and communication systems running smoothly across branch locations nationwide. This role installs, monitors, maintains, and troubleshoots network equipment such as firewalls, switches, and wireless systems. The Network Administrator works closely with branch teams and IT staff to resolve network issues, improve performance, and help ensure employees stay connected and productive. This position is based in Houston and serves as the primary network support resource for the company.

Essential Functions:

• Set up, maintain, and update network equipment, including firewalls, switches, and wireless systems, at branch locations across the country.
• Help keep branch locations connected by managing network and internet systems and making sure they run reliably.
• Troubleshoot and resolve network problems that cannot be handled by the IT Service Desk.
• Support backup internet connections to help branches stay online during outages or service interruptions.
• Monitor network performance and quickly respond to connectivity issues that impact branch operations.
• Maintain organized and accurate records of network equipment, settings, and system diagrams.
• Work with internet service providers and vendors to install new services, coordinate upgrades, and resolve outages.
• Partner with the IT team to improve network security and support company technology projects.
• Help ensure phone and communication systems perform reliably across all branch locations.
• Track, document, and complete work requests through the company's ticketing system.
• Participate in an on-call rotation to assist with urgent network issues outside normal business hours when needed.

Required Skills/Abilities:

• Hands-on experience administering enterprise firewalls in a multi-site environment; SonicWall experience strongly preferred.
• Experience working with firewalls, network switches, and wireless equipment. Experience with SonicWall, Cambium, Aruba, Ubiquiti, or Meraki systems is preferred.
• Strong understanding of computer networking, internet connectivity, wireless systems, VPNs, and network security.
• Ability to identify, troubleshoot, and resolve network and connectivity issues efficiently.
• Experience working directly with internet service providers and vendors to install services and resolve outages.
• Experience supporting multiple branch locations and helping ensure reliable network performance.
• Ability to serve as a resource for complex technical issues and provide support to other IT team members when needed.
• Knowledge of backup internet connections and failover systems that help keep locations online during service interruptions.
• Familiarity with cloud-based networking technologies, VoIP phone systems, and network security best practices.
• Experience using IT support, remote monitoring, or technical documentation systems is preferred.
• Industry certifications related to networking or network security are a plus.
• Ability to work independently, stay organized, manage priorities, and communicate effectively with employees, vendors, and business partners.
• Willingness to participate in an on-call rotation and respond to urgent network issues outside normal business hours when needed.

Physical Requirements:

• Ability to sit, stand, walk, bend, and reach throughout the workday.
• Ability to use a computer and other office equipment for extended periods.
• Ability to occasionally lift and carry up to 25 pounds of equipment.
• Ability to travel to branch locations as needed.
• Ability to work outside normal business hours when responding to urgent network issues.

Education and Experience:

• Bachelors degree in MIS, CIS or 4+ experience in lieu of education
• 3-5 years of hands-on experience administering enterprise firewalls in a multi-site environment; SonicWall experience strongly preferred.
• Experience in construction, oil and gas, mining, aerospace, heavy industrial, or maritime industries preferred.

Compensation and Benefits:

• Pay Range - $75,000-$85,000
• Monthly Profit-Sharing Opportunity
• Uniforms Provided
• Steel Toe Boot Allowance
• Vacation and Sick Leave
• 9 Holidays and 1 Floating Holiday
• 401k with 401k Match
• Medical, Dental, Vision, Life, Voluntary Life, Long and Short-Term Disability, Hospitalization, Critical Illness, Accident and Pet Insurance

Other Duties: Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for this job. Duties, responsibilities and activities may change at any time with or without notice.

CERTEX USA, LLC, is an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, veteran status or any other characteristic protected by law.