Systems and Network Senior Engineer

PERSOL; Singapore; On-site; SGD 120,000 - 160,000; Full time

Job summary

A leading technology solutions provider in Singapore seeks an experienced IT professional to oversee network architecture, manage cybersecurity, and administrate cloud platforms. The ideal candidate will have over 10 years of experience in enterprise architecture and relevant certifications. This role emphasizes collaboration with various teams and the implementation of robust IT strategies.

Qualifications

• 10+ years in enterprise architecture across networks and systems.
• Deep expertise in load balancing platforms.
• Strong proficiency in Cisco routing/switching.

Responsibilities

• Design and implement enterprise-wide LAN/WAN and Data Center.
• Direct cybersecurity strategy across various platforms.
• Maintain and operate Microsoft 365 and Azure cloud platforms.

Skills

Network & Infrastructure Architecture

Cybersecurity Leadership

Server, Storage & Systems Management

Cloud Platform & Microsoft 365 Administration

Business Continuity & Disaster Recovery

Leadership & Cross-Functional Collaboration

Education

Bachelor's in Computer Science, IT or Engineering

Professional certification (CCNP, CCIP, or CCIE)

Tools

Microsoft Azure

VMware

Nutanix

F5

Job description

Job Duties

1. Network & Infrastructure Architecture

• Design and implement enterprise-wide LAN/WAN, Data Center, Wireless Backhaul (Cambium cnMaestro), and IP Telephony.

• Lead network architecture planning, configuration, testing, and deployment of infrastructure services.

• Manage fault, configuration, performance, and capacity monitoring using Network Management Systems (NMS).

• Evaluate and integrate emerging technologies to support scalability and cross-platform needs.

• Provide roadmaps and continuous process improvement for network systems.

2. Cybersecurity Leadership

• Direct cybersecurity strategy and controls across O365, Cisco, Fortinet, Palo Alto, and VMware NSX platforms.

• Coordinate security risk assessments, remediation, and incident response.

• Enforce secure data exchange practices and oversee system-level security integration.

• Advise on security implications of infrastructure changes and promote security awareness and training.

3. Server, Storage & Systems Management

• Administer enterprise servers: installation, upgrades, monitoring, and performance tuning.

• Lead capacity planning and availability strategies to meet SLA targets.

• Manage user accounts, patch deployments, and infrastructure maintenance.

• Conduct server architecture evaluations and create business cases for upgrades when needed.

4. Cloud Platform & Microsoft 365 Administration

• Maintain and operate Microsoft 365 and Azure cloud platforms.

• Manage cloud-based services: Exchange Online, OneDrive, Teams, and SharePoint.

• Administer identity, access rights, and licensing for Microsoft cloud users.

• Configure and manage mobile device and app policies using Microsoft Intune (MDM & MAM).

5. Business Continuity & Disaster Recovery

• Develop and maintain Business Continuity and Disaster Recovery plans.

• Ensure backup integrity, failover procedures, and rapid recovery capabilities.

6. Leadership & Cross-Functional Collaboration

• Collaborate with systems, networking, and database teams for end-to-end solutions.

• Mentor junior IT staff and lead knowledge transfer efforts across departments.

• Support cross-department IT initiatives ensuring functional alignment and compliance.

Requirements

Core Technical Expertise

• 10+ years of experience in enterprise architecture across virtualization (VMware, Nutanix), systems, storage, backup, databases, networks, O365, and hyper-converged infrastructure.

• Deep expertise in load balancing platforms such as F5 and AVI Networks.

• 7+ years of experience in network virtualization and VSAT broadband technologies.

• 3+ years of hands-on experience with Cambium Networks, wireless backhaul, and microwave communications.

• Strong proficiency in Cisco routing/switching, Layer 2/3 routing protocols, and DNS, DHCP, certificates, OAuth, and authentication/authorization mechanisms.

• Solid exposure to security technologies, including firewalls, intrusion detection systems, threat mitigation, and vulnerability management.

Cloud & Virtualization

• 5+ years of experience in Microsoft Azure cloud services, architecture, and deployment.

• Hands-on experience with VMware, Nutanix, and hyper-converged solutions.

• Background in SDN (Software Defined Networking) and SD-WAN architectures for modern WAN and datacenter environments.

Governance, Compliance & Process

• Experience in technical oversight, peer reviews, and engineering quality assurance.

• Exposure to compliance and audit frameworks, including risk mitigation and reporting.

• Knowledge of process automation, IT operations optimization, and budget/cost estimation.

Leadership & Collaboration

• Proven leadership experience managing technical teams and leading projects end-to-end.

• Excellent stakeholder engagement skills, capable of influencing across business units.

• Strong technical documentation and analytical thinking abilities.

Education & Certifications

• Holds at least one professional certification: CCNP, CCIP, or CCIE.

• Educational background in Computer Science, IT, or Engineering (Electrical/Telecom).

• Affinity with multicultural collaboration in Asia, Africa, and Australia is an added advantage.

Interested candidate who wish to apply for the advertised position, please click “Apply”.