OT Security Architect: Build & Protect Industrial Networks

Cyberjobs; Houston (TX); On-site; USD 120,000 - 160,000; Full time

Benefits offered by this job

Competitive compensation packages

Medical, Dental & Vision benefits

Disability Insurance

Life and AD&D insurance with optional

401(k) retirement plan with company匹配

Paid time off including holidays

Career progression

Tuition reimbursement

Job summary

Solaris Energy Infrastructure, Inc. is building out secure OT networks across multiple sites in Houston, designing security into the deployment from the start.

The OT Security Analyst will define and enforce security requirements for Ignition gateways, SEL devices, and industrial infrastructure, collaborating with Engineering and IT Systems to ensure least-privilege, auditable configurations. The role reports to the SVP of Information Technology and focuses on monitoring, validation, and

Qualifications

• Bachelor's degree in Cybersecurity, CS, Engineering, or related field, or equivalent hands-on experience.
• 4+ years in cybersecurity, with at least 2 years hands-on in OT/ICS/SCADA environments
• Demonstrated experience designing or reviewing segmented industrial networks, including Purdue reference model and zone/conduit architecture
• Working knowledge of industrial protocols such as Modbus, DNP3, OPC UA, or IEC 61850
• Experience with vulnerability management in environments where devices cannot be scanned, patched, or rebooted
• Hands-on comfort configuring and hardening industrial network equipment and firewalls

Responsibilities

• Partner with Engineering and IT Systems on network design for each new site build, bringing security requirements into the design process early
• Contribute to SDN flow policy design and review, ensuring flows are least-privilege, documented, auditable, and current as sites change
• Develop and maintain a reference architecture for OT network segmentation that scales across sites
• Define hardening baselines for Ignition gateways, SEL device management, industrial switching, and OT endpoints
• Establish secure remote access for internal teams, OEMs, and third-party service providers
• Evaluate the current security stack against OT requirements and recommend tooling to close gaps
• Build OT network visibility and asset inventory across all operating sites
• Extend existing enterprise security tooling into OT where safe, and recommend purpose-built platforms
• Run continuous vulnerability management against industrial assets with risk-based remediation
• Monitor for anomalous OT network activity; triage, investigate, and respond
• Periodically audit deployed sites against design standards and close configuration drift
• Maintain and exercise OT incident response playbooks; lead or support OT-involved incidents
• Produce 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 mentality

Independent thinker

Innovative thinker

Desirable teammate

Relentless

Education

Bachelor's degree in Cybersecurity, CS, Engineering, or related field

GICSP/GRID/ISA IEC 62443 certification

Tools

Ignition SCADA

SEL SDN

Claroty

Nozomi

Dragos

Tenable OT

Rapid7 InsightVM/InsightIDR

Job description

Solaris Energy Infrastructure, Inc. is building out secure OT networks across multiple sites in Houston, designing security into the deployment from the start.

The OT Security Analyst will define and enforce security requirements for Ignition gateways, SEL devices, and industrial infrastructure, collaborating with Engineering and IT Systems to ensure least-privilege, auditable configurations. The role reports to the SVP of Information Technology and focuses on monitoring, validation, and