OT Security Engineer: SCADA & Industrial Networks

Solaris Oilfield Infrastructure, LLC; Houston (TX); On-site; USD 110,000 - 170,000; Full time

Benefits offered by this job

Competitive pay

Disability Insurance

Life and AD&D insurance

401(k) plan

Paid time off

Tuition Reimbursement

Job summary

Solaris Energy Infrastructure, Inc. is seeking an OT Security Analyst to design secure OT systems as new sites are built and continuously validate that the designed state matches operations.

You will partner with Engineering and IT to bring security requirements into the design and ensure secure posture from day one. The role reports to the SVP of Information Technology and collaborates with the enterprise Cybersecurity Analyst, creating a security-first culture across site networks and

Qualifications

• Bachelor's degree in Cybersecurity, Computer Science, Engineering, or related technical field (or equivalent practical experience).
• 4+ years in cybersecurity with at least 2 years in OT/ICS/SCADA environments.
• Experience designing/reviewing segmented industrial networks (Purdue model).
• Knowledge of industrial protocols: Modbus, DNP3, OPC UA, IEC 61850.
• Experience with vulnerability management where devices cannot be scanned/ patched/rebooted.
• Hands-on experience configuring and hardening industrial network equipment and firewalls.

Responsibilities

• Partner with Engineering and IT Systems on secure network design for new site builds.
• Contribute to SDN flow policy design ensuring least-privilege and auditable flows.
• Develop reference OT network segmentation architecture scalable across sites.
• Define hardening baselines for Ignition gateways, SEL device management, and OT endpoints.
• Establish secure remote access with authentication, session logging, and approval workflow.
• Evaluate security stack against OT requirements and recommend tooling to close gaps.
• Build and maintain OT network visibility and asset inventory across sites.
• Extend security tooling to OT where safe and recommend purpose-built platforms where needed.
• Run vulnerability management with risk-based remediation for industrial assets.
• Monitor for anomalous OT activity, triage, investigate, and escalate.
• Audit deployed sites against design standards and close configuration drift.
• Maintain and exercise OT incident response playbooks; support OT-involved incidents.
• Prepare audit evidence for SOX ITGC where OT touches financial reporting.
• Maintain OT security policy aligned to IEC 62443 and NIST CSF.
• Support customer security questionnaires and contract security reviews.
• Provide OT security input to Engineering and Operations on new equipment and vendor selection.

Skills

Exceptional communicator

Total ownership

Independent thinker

Innovative thinker

Desirable teammate

Relentless

Education

Bachelor's degree in Cybersecurity/CS/Engineering

Tools

Ignition

SEL-2740S

Industrial firewalls

Job description

Solaris Energy Infrastructure, Inc. is seeking an OT Security Analyst to design secure OT systems as new sites are built and continuously validate that the designed state matches operations.

You will partner with Engineering and IT to bring security requirements into the design and ensure secure posture from day one. The role reports to the SVP of Information Technology and collaborates with the enterprise Cybersecurity Analyst, creating a security-first culture across site networks and