Senior OT Cybersecurity Architect (Remote)

ACL Digital; United States; Remote; USD 140,000 - 190,000; Full time

Benefits offered by this job

Remote work

Job summary

ACL Digital seeks a Senior OT Cybersecurity Engineer to design and deploy an end-to-end OT security infrastructure for railway and critical infrastructure. You will implement security controls, validate architectures, and ensure compliance with IEC 62443 and TS 50701 across global projects.

You will lead hands-on engineering, collaborate with multi-disciplinary teams, and advance SOC-ready platforms while addressing availability, safety, and lifecycle considerations in a fully remote role.

Qualifications

• 10+ years in IT/OT cybersecurity infrastructure with architecture and deployment responsibility.
• CISSP and GICSP certifications.
• Proven delivery of cybersecurity infrastructures with OT/IT network expertise.
• CLC/TS 50701 knowledge.
• NIST 800-82 knowledge.
• ISO 27001/27005 knowledge.
• OT network design and segmentation.

Responsibilities

• Define reference architectures, platform designs, and integration patterns for OT cybersecurity.
• Implement, configure, and validate security platforms across projects.
• Ensure security platforms meet regulatory standards and project requirements.
• Support vulnerability assessments, configuration reviews, and remediation.
• Provide technical input to Security Case and assurance documents.

Skills

OT/IT security

CISSP

GICSP

IEC 62443

NIST 800-82

IAM/PAM/MFA

SIEM

Firewall/VPN

Linux/Windows

Vendor-neutral design

Education

Bachelor in Cybersecurity

Master preferred

Job description

ACL Digital seeks a Senior OT Cybersecurity Engineer to design and deploy an end-to-end OT security infrastructure for railway and critical infrastructure. You will implement security controls, validate architectures, and ensure compliance with IEC 62443 and TS 50701 across global projects.

You will lead hands-on engineering, collaborate with multi-disciplinary teams, and advance SOC-ready platforms while addressing availability, safety, and lifecycle considerations in a fully remote role.