Remote OT Security Architect - MQTT & IIoT

Cybersearch, LTD.; Omaha (NE); Remote; USD 138,000 - 172,000; Full time

Job summary

Cybersearch, LTD. is seeking an experienced OT Security Architect with MQTT expertise for a remote role in the United States.

The contractor will conduct OT security assessments, design secure MQTT-based communications, and advise leadership on security architecture aligned with IEC 62443, NIST 800-82, and NERC CIP. The ideal candidate will implement TLS, PKI, topic access controls, and high-availability MQTT deployments, while integrating telemetry with SIEM/SOAR OT monitoring and producing a

Qualifications

• Design secure MQTT broker architectures for OT/Industrial IoT environments.
• TLS, PKI, certificate-based authentication and encryption implementation.
• Topic-level access controls and least-privilege models.
• MQTT broker HA and disaster recovery design.
• Experience integrating MQTT telemetry into SIEM/SOAR OT monitoring platforms.

Responsibilities

• Conduct OT security assessment and provide advisory reports to leadership.
• Assess current architecture and deliver multi-year security roadmap.
• Develop Industry 4.0 and IIoT security strategy.
• Provide executive and board-level reporting.

Skills

MQTT security design

OT/IIoT security

TLS PKI auth

HA/DR for MQTT

Education

IEC 62443 Expert

CISSP

Tools

HiveMQ

EMQX

Eclipse Mosquitto

AWS IoT Core

Azure IoT Hub

Job description

Cybersearch, LTD. is seeking an experienced OT Security Architect with MQTT expertise for a remote role in the United States.

The contractor will conduct OT security assessments, design secure MQTT-based communications, and advise leadership on security architecture aligned with IEC 62443, NIST 800-82, and NERC CIP. The ideal candidate will implement TLS, PKI, topic access controls, and high-availability MQTT deployments, while integrating telemetry with SIEM/SOAR OT monitoring and producing a