OT Security Architect

IPolarity; United States; Hybrid; USD 150,000 - 190,000; Full time

Job summary

IPolarity seeks an OT Security Architect in Bedford, MA (Hybrid) to define and secure OT reference architecture, lead CRA implementation, and harden Rockwell PLCs and Ignition SCADA environments.

The candidate should have 8–10 years in OT/Cyber Security with GMP, FDA 21 CFR Part 11, IEC 62443/ISA99; CRA experience preferred; Rockwell certifications advantageous. The role supports audits and regulatory inspections.

Qualifications

• Mandatory skills focus on Rockwell PLC (ControlLogix/CompactLogix) systems, Ignition SCADA, and compliance with CRA, IEC 62443/ISA99, ISA 95, GMP, and FDA 21 CFR Part 11.

Responsibilities

• Define and maintain global OT reference architecture (Purdue model, zones & conduits, DMZ).
• Lead CRA implementation and gap assessments for OT systems.
• Secure and harden Rockwell PLCs and Ignition SCADA environments.
• Perform OT cyber risk assessments and threat modelling.
• Implement secure configuration baselines for servers and engineering workstations.
• Ensure compliance with GMP & FDA 21 CFR Part 11 (audit trails, electronic records, RBAC).
• Support Computer System Validation (CSV) documentation (URS/NFR/FS/DS/IQ/OQ/PQ).
• Define patch management and vulnerability handling processes for validated OT systems.
• Support audit readiness and regulatory inspections.

Skills

Rockwell PLC

Ignition SCADA

OT security

GMP compliance

Tools

Rockwell Automation

SCADA systems

Job description

*******************Only USC/GC*********************

The profiles submitted has been reviewed by the manager; however, the candidate does not have sufficient relevant cybersecurity experience within regulated manufacturing environments.

The manager is specifically looking for candidates with hands-on experience in areas such as GMP, validation, OT systems, and relevant compliance requirements.

candidates have relevant experience in regulated manufacturing environments and can demonstrate strong exposure to the above areas.

How many rounds of interview – 1 or 2

Job title –

OT

Security Architect

Work location - Bedford, MA 01730, Hybrid

Can go nearby Infosys Hub Office

Mandatory skills - The role focuses on Rockwell PLC (ControlLogix/CompactLogix) systems, Ignition SCADA, and compliance with EU Cyber Resilience Act (CRA), IEC 62443/ISA99, ISA 95, GMP, and FDA 21 CFR Part 11.

Minimum years of experience needed in the required skills- 8-10 years

Minimum over all work experience required – 10 years

Domain – Cyber Security

Any certification required - Preferred Certifications

IEC 62443 Cybersecurity Expert

GICSP / CISSP

Rockwell Automation certifications

Complete job description –

• Define and maintain global OT reference architecture (Purdue model, zones & conduits, DMZ).
• Lead CRA implementation and gap assessments for OT systems.
• Secure and harden Rockwell PLCs and Ignition SCADA environments.
• Perform OT cyber risk assessments and threat modelling.
• Implement secure configuration baselines for servers and engineering workstations.
• Ensure compliance with GMP & FDA 21 CFR Part 11 (audit trails, electronic records, RBAC).
• Support Computer System Validation (CSV) documentation (URS/NFR/FS/DS/IQ/OQ/PQ).
• Define patch management and vulnerability handling processes for validated OT systems.
• Support audit readiness and regulatory inspections.