IT Infrastructue & Network Engineer

EcoCeres Limited; Pasir Gudang; On-site; MYR 85,000 - 110,000; Full time

Job summary

A leading manufacturing company in Malaysia is seeking an Infrastructure & Network Engineer to design, implement, and maintain secure IT, OT, and ELV systems. The role involves managing network operations, including Layer 2/3 switches and firewalls, ensuring compliance with security standards. The ideal candidate has at least 5 years of experience in an industrial setting, a degree in IT or related field, and hands-on expertise in relevant technologies. This position emphasizes problem-solving, teamwork, and a high responsibility for safety in operational environments.

Qualifications

• Expertise in network design, deployment, and troubleshooting.
• Hands-on experience with switches and firewalls.
• Knowledge of IT/OT architecture and security principles.
• Understanding of industrial protocols.
• Degree in IT or related fields required.
• Minimum 5 years in IT infrastructure/networking.

Responsibilities

• Design and maintain secure IT, OT, and ELV systems.
• Administer firewalls and manage network infrastructure.
• Monitor OT network performance and incident response.
• Oversee ELV systems and enforce compliance.
• Administer monitoring tools for system performance.
• Ensure accurate documentation and support audits.

Skills

Network design

Troubleshooting

Firewall administration

Cybersecurity controls

Communication

Analytical skills

Education

Degree in IT, Networking, or Computer Engineering

Tools

VMware

Hyper-V

SolarWinds

Job description

Position Overview

The Infrastructure & Network Engineer is responsible for designing, implementing, and maintaining secure, resilient IT, OT, and ELV (Extra Low Voltage) systems within the plant. This includes managing Layer 2/3 network operations, firewall administration, system monitoring, and ensuring reliable connectivity across IT/OT environments. The role also oversees ELV systems such as CCTV, access control, and structured cabling to ensure compliance and operational integrity.

Key Responsibilities

Network Infrastructure

• Configure, deploy, and troubleshoot Layer 2/3 switches.
• Administer firewalls, including security policies, NAT, VPN, and traffic inspection.
• Design and manage network segmentation (VLANs, ACLs, routing, isolation).
• Ensure network resilience through redundancy and failover strategies.
• Optimize network performance and plan for capacity.
• Support wired and wireless infrastructure, including enterprise Wi‑Fi and authentication.

OT Network

• Maintain secure connectivity for PLCs, SCADA, historians, and production servers.
• Collaborate with OT teams and vendors to secure IT/OT data flows.
• Monitor OT network performance and support incident response.
• Implement secure remote access for contractors and vendors.

ELV Systems

• Manage ELV systems (CCTV, access control, PA/intercom) and ensure IP integration.
• Apply cybersecurity controls and coordinate with vendors for compliance.
• Oversee maintenance, upgrades, and documentation of ELV systems.

Monitoring & Visibility

• Administer monitoring tools (e.g., SolarWinds) for performance and alerts.
• Develop dashboards and thresholds for early issue detection.
• Conduct root‑cause analysis for outages and connectivity issues.

Identity & Access Management

• Manage Microsoft Entra ID for identity lifecycle, conditional access, and governance.
• Enforce RBAC, MFA, and secure access policies.

Server & Virtualization

• Administer virtualization platforms (VMware/Hyper‑V), including provisioning, patching, and backups.
• Coordinate with vendors for hardware and storage health.

Cloud Security

• Enforce cloud security policies and troubleshoot hybrid connectivity issues.

Documentation & Compliance

• Maintain accurate network and system documentation.
• Ensure compliance with HSSE, ISO standards, and cybersecurity frameworks.
• Support audits and assessments.

Job Requirements

• Expertise in network design, deployment, and troubleshooting.
• Hands‑on experience with switches, firewalls, and ELV systems.
• Knowledge of IT/OT architecture, industrial protocols, and security principles.
• Familiarity with monitoring tools, Microsoft Entra ID, and virtualization platforms.
• Understanding of VLANs, STP, OSPF, DHCP, DNS, and QoS.
• Degree in IT, Networking, or Computer Engineering.
• Minimum 5 years of experience in IT infrastructure/networking (industrial environment preferred).
• Exposure to ELV projects; certifications (e.g., CCNP) are an advantage.
• Strong analytical and troubleshooting ability.
• Effective communication and coordination with cross‑functional teams.
• High responsibility and safety awareness in operational environments.