Ajish Ayyapath

• Tasked with protecting critical industrial assets, including SCADA systems, PLCs, and industrial control networks,
ensuring their resilience against cyber threats.
• Develop and enforce comprehensive security protocols to safeguard the availability, integrity, and confidentiality
of Operational Technology (OT) assets.
• environment to ensure optimal performance and security posture.
• Implement and manage rigorous access controls for OT assets, ensuring that only authorized personnel can access
critical systems.
• Real-Time Threat Surveillance: Deploy and configure Intrusion Detection/Prevention Systems (IDS/IPS) to monitor
network traffic, facilitating prompt detection and mitigation of cyber threats.
• Network Design and Segmentation: Create and implement network zones and conduits according to functional
requirements, establishing firewall rules to isolate and protect vital assets from cyber risks.
• Security Audits and Assessments: Conduct regular security audits and firewall evaluations to assess the
effectiveness of existing security measures, providing actionable recommendations for enhancement.
• Collaboration Across Teams: Work closely with IT security teams to ensure alignment between IT and OT security
initiatives, effectively bridging the gap between these domains.
• Incident Management and Troubleshooting: Handle troubleshooting, incident reporting, and resolution processes,
ensuring continuous improvement in security measures.
• Design and Change Oversight: Lead design efforts and manage changes within the OT security framework, ensuring
compliance with industry best practices and regulatory standards.

• Tasked with protecting critical industrial assets, including SCADA systems, PLCs, and industrial control networks,
ensuring their resilience against cyber threats.
• Develop and enforce comprehensive security protocols to safeguard the availability, integrity, and confidentiality
of Operational Technology (OT) assets.
• environment to ensure optimal performance and security posture.
• Implement and manage rigorous access controls for OT assets, ensuring that only authorized personnel can access
critical systems.
• Real-Time Threat Surveillance: Deploy and configure Intrusion Detection/Prevention Systems (IDS/IPS) to monitor
network traffic, facilitating prompt detection and mitigation of cyber threats.
• Network Design and Segmentation: Create and implement network zones and conduits according to functional
requirements, establishing firewall rules to isolate and protect vital assets from cyber risks.
• Security Audits and Assessments: Conduct regular security audits and firewall evaluations to assess the
effectiveness of existing security measures, providing actionable recommendations for enhancement.
• Collaboration Across Teams: Work closely with IT security teams to ensure alignment between IT and OT security
initiatives, effectively bridging the gap between these domains.
• Incident Management and Troubleshooting: Handle troubleshooting, incident reporting, and resolution processes,
ensuring continuous improvement in security measures.
• Design and Change Oversight: Lead design efforts and manage changes within the OT security framework, ensuring
compliance with industry best practices and regulatory standards.

Client: Petroleum Development Oman LLC (Entire Oman South Area)

Roles and Responsibilities:
• Contract Oversight: Ensured strict adherence to contract implementation while supervising EPCs and subcontractors through design, installation, and project handover phases.
• Operational Management: Managed telecom operations across all PDO South concession areas, overseeing the installation and commissioning of systems in rigs, hoists, frac units, and WTUs.
• Project Scheduling & Design: Developed project schedules in collaboration with managers and contributed to
design phases through surveys and detailed planning for large-scale telecom projects.
• In-House Project Execution: Executed projects on time while adhering to corporate HSE and quality standards, ensuring all deliverables were met during handover.
• Training & Knowledge Transfer: Provided hands-on training to operations staff to ensure effective knowledge transfer and troubleshooting skills.
• Product Evaluation & Materials Management: Evaluated new telecom products through field testing, managed material provision for operations, and ensured proper storage and housekeeping.
• Telecom Strategy Development: Developed and implemented a long-term telecom strategy to ensure safe and efficient services for operations.

• Network Engineering & Technical Support: Spearheaded the design and deployment of network solutions for PDO
projects across various remote sites, ensuring compliance with PDO security policies and industry standards.
Conducted evaluations to develop tailored network architecture, cabling, and equipment selection, facilitating
project feasibility analyses.
• Process Optimization & Project Coordination: Identified opportunities for process improvements within IT
infrastructure, effectively reducing costs and minimizing downtime during scheduled upgrades. Planned and
scheduled network service downtimes while generating comprehensive technical briefings and detailed design
documentation, including Visio diagrams and SOPs.
• Collaboration & Troubleshooting: Collaborated with cross-functional teams to diagnose and resolve network
issues, ensuring optimal performance and reliability of network devices and services. Administered Cisco and
Avaya systems, including two-factor authentication services (Gemalto SAS), while monitoring and managing
support tickets through HP Service Manager.
• Technical Leadership & Mentorship: Provided technical leadership for complex project initiatives, conducting
advanced training sessions for junior engineers to promote skill development and continuous improvement within
the team.
• Data Center & Disaster Recovery Management: Oversaw the management of the data center and disaster recovery
sites, ensuring the integrity of network infrastructure and efficient operations. Conducted root cause analyses for
network incidents to implement preventive measures and enhance operational efficiency.

• Responded to monitoring system alarms, stabilizing network issues promptly to ensure uptime.
• Delivered proactive solutions for complex field problems, enhancing operational efficiency.
• Managed a LAN with 450+ access switches, 30 distribution switches, and 1, 469 Cisco Wi-Fi access points.
• Configured and administered Cisco routers, switches, and Wi-Fi controllers for optimal performance.
• Oversaw Nexus 2k, 5k, and 7k configurations in the data center, ensuring reliability and maintenance.
• Implemented IPsec for secure interoffice connectivity and configured ACLs for traffic filtering.
• Developed VLANs, VTP, and switch port security to enhance network security and segmentation.
• Conducted backups and firmware upgrades, monitored performance using Cisco Prime and SolarWinds.
• Administered Cisco and Avaya CM systems, including A/V conferencing installations.
• Managed token-based two-factor authentication services and ensured compliance with SLAs in HP Service
Manager.

• Maintained 99% network uptime and 100% service uptime.
• Administered Windows 2000/2003 servers, including Exchange and file servers.
• Managed and updated mail, DNS, DHCP, and antivirus servers.
• Oversaw mail server administration and mailbox management.
• Implemented updates, patches, and security fixes.
• Administered Cisco, Netscreen, and Barracuda devices.
• Coordinated with telecom providers for service lines.
• Executed backups and upgrades for network devices.
• Monitored system performance using WhatsUp Gold.