Job Title: Network Engineer – Operational Technology (OT)Location: Alvin, TX 77511Business Unit: Operational Technology & Process ControlsReports To: OT Infrastructure & Controls ManagerType: 6-12 month contract-to-hireCitizenship Status: Open to US Citizen and Green CardSchedule: Hybrid: On-site Mon, Tues, Thurs and remote Wed, FriOption to work a 9/80 schedule or a 4/10 scheduleExperience Required: 5–10 YearsIndustry Background: Petrochemical / Refinery preferredPosition Overview:We are seeking an experienced and highly skilled Network Engineer to join our Operational Technology (OT) and Process Controls team within a global leader in the petrochemical industry. This role is critical to the stability and security of our OT network infrastructure, with a focus on designing, implementing, and maintaining robust, secure, and scalable industrial networks that support process control systems across our operations.Key Responsibilities:Design, deploy, and maintain OT network infrastructure including switches, routers, and firewalls.Configure and manage Palo Alto Firewalls and industrial firewalls to ensure network security and segmentation within OT environments.Utilize SolarWinds for network monitoring, performance analysis, and issue resolution.Support and manage Cisco switch configurations and maintenance, including VLANs, trunking, and port configurations.Oversee the installation and maintenance of fiber optic and Ethernet cabling and connectivity.Work closely with control systems engineers and process teams to ensure network reliability and security within process-critical environments.Implement and maintain documentation, network diagrams, and change control processes in line with OT and cybersecurity best practices.Ensure compliance with internal standards, industry regulations, and cybersecurity frameworks for industrial networks (e.g., ISA/IEC 62443).Participate in incident response, root cause analysis, and corrective actions related to OT network events.Support planning and execution of network upgrades, expansions, and remediation projects.Qualifications & Experience:5–10 years of hands-on experience in network engineering, preferably within refinery or petrochemical environments.Strong expertise in Palo Alto Firewalls, SolarWinds, and Cisco switching technologies.Proven experience working with industrial firewalls in OT/ICS environments.In-depth knowledge of Ethernet and fiber-optic networking, including installation, termination, and troubleshooting.Experience working in regulated industrial environments with a strong focus on reliability and safety.Ability to work collaboratively across multidisciplinary teams and support 24/7 operations as needed.Strong documentation skills and familiarity with change management processes.Preferred Qualifications:Bachelor’s degree in Computer Science, Network Engineering, Electrical Engineering, or a related field.Industry certifications such as:Cisco Certified Network Professional (CCNP)Palo Alto Networks Certified Network Security Engineer (PCNSE)Certified Information Systems Security Professional (CISSP), a plusFamiliarity with ISA/IEC 62443 and other OT cybersecurity standards.