TC - CS - Cyber Architecture - OT And Engineering - OT Security - Senior

Ernst & Young Advisory Services Sdn Bhd; Bengaluru; On-site; INR 3,000,000 - 5,500,000; Full time

Job summary

EY- Cyber Security (OT Security) – Technology Consulting – Senior is seeking a specialist to deliver OT security engagements and advisory/implementation support. You will work on OT-ICS environments, analyze alerts, and help secure IT/OT integrations through defined security controls and risk awareness.

You will collaborate with delivery leads and architects to identify risks, support incident response, and apply OT knowledge across multiple security domains in a global EY delivery framework.

Qualifications

• Experience in OT security engagements and advisory/implementation support.
• Knowledge of OT-ICS environments, assets, and protocols.
• Ability to analyze alerts and investigate OT incidents.

Responsibilities

• Monitor OT networks using OT SOC and monitoring tools.
• Analyse alerts from OT security monitoring solutions.
• Identify anomalies and IoCs affecting ICS environments.
• Perform Level 2 alert triage and investigation for OT incidents.
• Support OT cybersecurity incident response activities.
• Understand OT-ICS operational processes and security concepts.
• Know OSI layers, TCP/IP, and OT-ICS security technologies.

Skills

OT networks monitoring

OT SOC

Threat detection

Incident triage

ICS security

Risk assessment

Security concepts (OT-ICS)

Networking protocols (TCP/IP)

Tools

Nozomi

Claroty

Tenable.ot

Defender for IoT

Job description

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TC - CS - Cyber Architecture - OT And Engineering - OT Security - Senior

Other locations: Anywhere in Country

Date: Aug 24, 2026

Requisition ID: 1702815

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EY- Cyber Security (OT Security) – Technology Consulting – Senior:

About Global Delivery Services

Global Delivery Services refers to EY's worldwide network of service delivery centers. The GDS team plays an important role in EY’s strategy by ensuring effective support to EY’s growth agenda.

Our journey started in 2002 with approximately 200 people. Today we stand at 80,000+ professionals in ten locations around the world. We operate in Argentina, China, Hungary, India, Philippines, Poland, Sri Lanka, Mexico, Spain and the United Kingdom.

Client service is focused on providing Consulting, Assurance, Tax, Strategy & Transactions, and Knowledge support to our clients around the world. The teams enable account teams worldwide to provide seamless, high-quality, value-added support, helping deliver exceptional client service.

Enablement Services provides cost-effective, high-skilled, and innovative services to support EY’s global and local enablement teams. Markets, BMC, AWS, Finance and Accounting, Risk Management, Procurement, People Shared Services, IT Service Delivery and IT Global Infrastructure services, are among the services offered by Enablement Services.

Our innovation specialists serve the GDS Client Service and Enablement Services teams, along with Service Lines, Core Business Services and Sectors. The team brings the desired environment, technologies and skilled teams together for facilitation, rapid prototyping and innovative thinking. The competencies offered include analytics, digital, user experience, mobile technology, infrastructure, Microsoft technologies and open innovation.

The Opportunity

The GDS Cyber Architecture Operational Technology & Engineering (CAOE) services help our clients tackle the many security challenges they face on a daily basis and develop effective solutions using people, processes and technology, while enabling better security and risk decisions, and reducing costs related to manging security risks. The CAOE team is looking for individuals who will play a direct role in delivery of Operational Technology (OT) security engagements, development of proposals in this area, and develop OT security solutions. You will play a key role in supporting our clients to secure their IT/OT environments, either through advisory and/or implementation support.

Your Key Responsibilities

• Monitor OT networks using specialized OT SOC and network monitoring tools
• Analyse alerts from OT security monitoring solutions (e.g., Nozomi, Claroty, Tenable.ot, Defender for IoT, etc.)
• Identify suspicious activities, anomalies, and indicators of compromise (IoCs) affecting ICS environments
• Perform Level 2 alert triage and investigation for OT incidents
• Support for OT cybersecurity incident response activities
• Understanding of security-related operational processes in the OT-ICS environments
• Understanding of technologies (typical assets, communication protocols, technical architectures) utilized by OT-ICS systems and networks
• Knowledge of cyber / information security concepts, risk and controls concepts
• Understanding of aspects of functional safety (SIS)
• Knowledge of TCP/IP, concepts of OSI layer and protocols, networking and security concepts
• Knowledge of the technical security solutions utilized within OT-ICS systems and networks
• Knowledge of OS (Windows / Linux) security, Database security
• Prior experience working alongside delivery leads and architects to Identify and manage risks is a plus

Skills and attributes for success