Job Title

OT (Operational Technology) Business Analyst

Role Summary

The OT Business Analyst will bridge the gap between industrial operations and enterprise IT/security teams by gathering, analyzing, and translating requirements across OT environments (ICS/SCADA). This role supports initiatives such as OT visibility, cybersecurity, asset management, and integration with enterprise platforms while ensuring safety, availability, and regulatory compliance.

Key Responsibilities

OT Domain & System Understanding:

Document and analyze OT architecture aligned to the Purdue model (Levels 0-5).
Work with core OT components:
Field devices: Sensors, actuators.
Control systems: PLCs, RTUs, DCS.
Supervisory systems: SCADA, HMI.
Operations layer: Historians, engineering workstations.
Integration layer: DMZ, gateways, jump servers.
Capture dependencies across network protocols (Modbus, OPC-UA, PROFINET).

Requirements Gathering & Analysis

Elicit and document business, functional, and technical requirements for OT initiatives.




Translate OT engineer inputs into business-readable deliverables (BRDs, user stories).
Conduct workshops with plant operations, engineering, and cybersecurity teams.
Create process flows, use cases, and current/future state architectures.

OT Cybersecurity & Risk Support

Support initiatives aligned to NIST CSF, IEC 62443, NERC CIP.
Capture requirements for:
OT asset discovery (e.g., Tenable OT, Claroty, Nozomi).
Network segmentation and IDMZ design.
Vulnerability management in OT environments.
Assist in risk assessments, control mapping, and audit readiness documentation.

Asset Visibility & Data Management

Define and validate OT asset inventory requirements (non-CMDB environments).
Ensure data consistency across tools (Tanium, Tenable, ServiceNow CMDB).
Support reporting and dashboards for OT risk posture.

Integration & Digital Transformation

Gather requirements for integrating OT with enterprise platforms:
SIEM (Splunk), data lakes (Snowflake, Dat

📌 Estuate - Business Analyst - Operational Technology (Kolkata)
🏢 Estuate
📍 Kolkata