OT Security Analyst

Oxychem; Houston, Northern (TX, KY); Hybrid; USD 110,000 - 170,000; Full time

Job summary

OxyChem seeks an OT Security Analyst to help secure and support industrial control systems, manufacturing networks, and critical operational technologies. This role partners with plant operations, engineering, infrastructure, and enterprise cybersecurity teams to assess risk, implement security controls, respond to incidents, and support compliance with industry standards and internal requirements.

Key responsibilities include monitoring OT/ICS events, conducting risk assessments, and developing

Qualifications

• Bachelor’s degree in cybersecurity, information systems, engineering or related field.
• 5+ years in Cybersecurity OT/ICS security or related disciplines.
• Experience securing PLC, DCS, SCADA, SIS, and process-control environments.
• Experience applying security principles to industrial/manufacturing settings.
• Experience with MOC/change management and evaluating cybersecurity impacts.

Responsibilities

• Monitor and respond to OT/ICS cybersecurity events in manufacturing environments.
• Perform OT risk assessments, vulnerability reviews, and audits with cross-functional teams.
• Support secure design of industrial networks, firewalls, remote access, and asset discovery.
• Develop and maintain OT security architectures and control requirements.
• Coordinate OT security initiatives from design through deployment and handoff.
• Support disaster recovery exercises and incident response for OT environments.
• Maintain OT security standards, procedures, and evidence for compliance.

Skills

OT/ICS security

Risk assessment

Security governance

Communication

Education

Bachelor's degree in cybersecurity

Tools

Industrial firewalls

IDS/IPS

SIEM

OT asset discovery platforms

Job description

## OT Security AnalystApply: Houston, TX: Full time: Posted Yesterday: JR107105At OxyChem, our chemistry makes modern life possible, and it is our people who make the difference. We are a safety-first, purpose-driven team committed to innovation, environmental responsibility, and doing things the right way. If you are ready to contribute, elevate your skills, and take ownership of your career, Oxychem offers the opportunity to make a difference every day. OxyChem, a Berkshire Hathaway company, is a leading producer of essential chemistry with operations in the U.S., Canada and Latin America. OxyChem’s products play an essential role in everyday life, supporting critical applications in water treatment, pharmaceuticals, healthcare, manufacturing, automotive, personal hygiene, and residential and commercial construction. OxyChem actively participates in the Occupational Safety and Health Administration Voluntary Protection Program, underscoring our commitment to safety. Headquartered in Dallas, Texas, OxyChem is a top three U.S. manufacturer of polyvinyl chloride, chlor-alkali and chlorinated organic chemicals, and calcium chloride. Visit oxychem.com for more information. In a fast-paced industry that demands precision, we create a supportive workplace where the safety and well-being of our employees are paramount. We are committed to rewarding top performers, offering very competitive pay and benefits, and providing tremendous career development opportunities. OxyChem is seeking an OT Security Analyst to help secure and support industrial control systems, manufacturing networks, and critical operational technologies. This role partners with plant operations, engineering, infrastructure, and enterprise cybersecurity teams to assess risk, implement security controls, respond to incidents, and support compliance with industry standards and internal requirements. Key Responsibilities:* Monitor, triage, and respond to cybersecurity events affecting OT, ICS, and manufacturing environments.* Conduct OT Security risk assessments, vulnerability reviews, and security audits in partnership with operations, engineering, infrastructure, and enterprise cybersecurity teams.* Support secure design and implementations of industrial networks, firewalls, remote access, asset discovery, monitoring, and related OT security technologies.* Evaluate cybersecurity impacts of system, network, application, and process change before implementation, including changes reviewed through formal Management of Change (MOC) or change management processes.* Develop, review, and maintain secure OT, reference architectures, design patterns, and control requirements aligned with security strategy.* Partner with engineering and operations teams to develop and maintain secure OT architectures and control requirement for plant and process-control environments.* Partner with Enterprise security teams to align OT controls architectures, assessments, audit activities and incident response processes with broader cybersecurity strategy.* Support OT security initiatives from requirements and design through implement, validation, and operational handoff.* Support disaster recovery exercises, incident response activities and cybersecurity tabletop drills involving OT and manufacturing environments.* Develop and maintain OT security standards, procedures, documentation, and control evidence to support compliance and operational readiness.* Monitor emerging OT threats, vulnerabilities, technology trends and industry practices to help improve the security posture of manufacturing environments.* Provide cybersecurity guidance for projects, site migrations, technology deployments, and operational initiatives affecting OT environments. Required Qualifications:* Bachelor's degree in cybersecurity, information systems, computer science, engineering, or a related field.* 5+ years of experience in Cybersecurity OT/ICS security, industrial automation, infrastructure security or related disciplines.* Experience securing or supporting PLC, DCS, SCADA, Safety Instrumented Systems (SIS), laboratory systems, and process-controls environments.* Experience applying system, network, and application security princples to industrial and manufacuring environments.* Experience working within formal Management of Change (MOC) or change management processes and evaluating cybersecruity impacts before implementation.* Experience supporting OT security initiatives from requirements and design through implementation, validation, and operational handoff.* Knowledge of IEC 62443, NIST CSF, NIST 800-53, NIST 800-171, or similar cybersecurity control frameworks.* Experience conducting cybersecurity risk assessments and supporting security audits or compliance reviews.* Strong analytical, troubleshooting, documentation, and communication skills.* Ability to communicate technical risks, control requirements, and recommendations to technical, operational, and business stakeholders.* Ability to travel up to 20% Preferred Certifications:* CISSP, GICSP, CASP+, Security+, ISA/IEC 62443 Cybersecurity Certifications, or similar security certifications. Preferred Technical Experience:* Industrial firewalls and network segmentation.* Intrusion Detection and Prevention Systems (IDS/IPS)* Security Information and Event Management (SIEM)* Endpoint detection, response, and monitoring* OT asset discovery and monitoring platforms* Vulnerability managemetn and remediation coordination* Secure remote access solutions* Cloud security controls and architectures* Threat intelligence and threat hunting* Security policies, standards, procedures, and control documentation