Systems and Network Senior Engineer

PERSOL; Singapore; On-site; SGD 120,000 - 150,000; Full time

Job summary

A leading technology consultancy in Singapore is looking for a seasoned IT professional to design network infrastructures and lead cybersecurity initiatives. The ideal candidate should have over 10 years of architectural experience, strong knowledge of cloud services, and necessary certifications. This role promises significant growth opportunities within a collaborative, multicultural environment.

Qualifications

• 10+ years of experience in virtualization and network infrastructure.
• Deep expertise in load balancing technologies.
• Proficient in security systems and risk mitigation.

Responsibilities

• Design and implement enterprise-wide LAN/WAN and Data Center.
• Direct cybersecurity strategy across multiple platforms.
• Develop and maintain Business Continuity and Disaster Recovery plans.

Skills

10+ years of experience in enterprise architecture

Deep expertise in load balancing platforms

7+ years of experience in network virtualization

3+ years of hands-on experience with Cambium Networks

Strong proficiency in Cisco routing/switching

Solid exposure to security technologies

Education

Professional certification (CCNP, CCIP, CCIE)

Educational background in Computer Science, IT, or Engineering

Tools

VMware

Nutanix

Microsoft Azure

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.

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.

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.
• 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”. We regret that only shortlisted candidates will be notified.