Senior OT/SCADA Cybersecurity Engineer

ON.energy; Houston (TX); On-site; USD 120,000 - 180,000; Full time

Benefits offered by this job

Medical, dental, and vision insurance

401(k) with company match

Paid time off

Job summary

ON.energy is seeking a Senior OT/SCADA Cybersecurity Engineer in Houston to secure industrial control systems behind our grid-connected energy portfolio. You will own the OT security tooling, set verification gates, and oversee security requirements in procurement, site design, and commissioning.

The role emphasizes hands-on engineering, with focus on protecting SCADA, PLCs, HMIs, and control networks while maintaining safety and dispatchability around the clock.

Qualifications

• OT/ICS security experience in energy or utilities environments.
• Experience securing SCADA and ICS in live plants, not just labs.
• Ability to define security requirements and drive implementation through other teams.

Responsibilities

• Own and operate OT security tooling, monitoring, and logs collection.
• Design IEC 62443-aligned zone architectures across site control and enterprise boundaries.
• Write and exercise OT incident response playbooks and demand evidence-based approvals.

Skills

OT/ICS security

Security engineering

Vulnerability management

Network monitoring

Education

Bachelor's degree in CS/EE

Tools

Nozomi

Claroty

Dragos

Tenable OT

Forescout

Cisco Cyber Vision

Job description

ON.energy is seeking a Senior OT/SCADA Cybersecurity Engineer in Houston to secure industrial control systems behind our grid-connected energy portfolio. You will own the OT security tooling, set verification gates, and oversee security requirements in procurement, site design, and commissioning.

The role emphasizes hands-on engineering, with focus on protecting SCADA, PLCs, HMIs, and control networks while maintaining safety and dispatchability around the clock.