391 Network Infrastructure jobs in Singapore

Job Summary:

We are seeking a skilled and dedicated Network Infrastructure Engineer with advanced network knowledge and familiarity with WAN optimization to join our professional services team.

As a Network Infrastructure Engineer, you will play a critical role in managing our clients' network and ensuring the performance of their traffic are optimized and secure.

You will be responsible for implementing and managing WAN optimization solutions, conducting performance assessments as well as providing expertise in mitigating network performance issues.

Responsibilities:

• Deploy and maintain WAN optimization solutions to optimize clients' network performance.
• Implement network Infra and security policies, standards and procedures to ensure compliance with industry regulations and best practices.
• Collaborate with cross-functional teams to ensure targeted network traffic are optimized and secured.
• Stay updated with the latest endpoint security threats, vulnerabilities and industry trends and proactively recommend and implement appropriate countermeasures.
• Provide technical guidance and support to cross-functional teams during network incidents and investigations.
• Document WAN optimizer configurations, processes and procedures.

Qualifications:

• Bachelor's degree/Diploma in Computer Science, Information Security or a related field.
• Professional certifications for Network Infrastructure products, certification for Riverbed is favored.
• Familiarity with managing/implementing Network management platforms and tools at enterprise level.
• Understanding of network traffic and their protocols.
• Familiarity with security standards and frameworks (NIST, CIS) and their application for network products.
• Excellent analytical and problem-solving skills to identify and resolve network issues.
• Strong communication and collaboration skills to work effectively with clients, cross-functional teams and stakeholders.
• Able to work in a fast-paced environment and manage multiple priorities effectively.

Location: South

Working hours: 8.30 am - 6pm (onsite)

Salary: Basic + AWS

We are seeking a highly skilled L2 Network Engineer to support, maintain, and optimize our network infrastructure. The ideal candidate will be responsible for managing day-to-day network operations, troubleshooting escalated incidents, implementing network changes, and ensuring high availability and security across all network services.

Key Responsibilities

• Provide Level 2 (L2) technical support for network incidents, escalations, and service requests in line with SLAs.
• Perform network troubleshooting and root cause analysis for LAN, WAN, WLAN, and firewall-related issues.
• Configure, monitor, and maintain routers, switches, firewalls, VPNs, and load balancers.
• Assist in network upgrades, migrations, and patch management to ensure continuous service improvement.
• Implement and maintain network security policies, including ACLs, VLAN segmentation, and IPS/IDS management.
• Collaborate with vendors and internal teams for hardware replacements, configuration reviews, and performance tuning.
• Monitor network performance using tools such as SolarWinds, PRTG, or Nagios, ensuring optimal uptime and stability.
• Support incident response and change management processes according to ITIL best practices.
• Maintain accurate network documentation, topology diagrams, and configuration records.
• Participate in on-call rotation or standby duty as part of network support coverage.

Requirements

• Degree in Information Technology, Computer Engineering, or related discipline.
• Minimum 2 years of experience in enterprise network operations or support.
• Strong knowledge of Cisco or Juniper network devices (routing, switching, firewall).
• Hands-on experience with TCP/IP, VLANs, VPNs, OSPF, BGP, MPLS, and network monitoring tools.

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Wong Siew Ting (Maeve) - R

ScienTec Consulting Pte Ltd - 11C5781

Job Summary:

We are seeking a skilled and dedicated Network Infrastructure Engineer with advanced network knowledge and familiarity with WAN optimization to join our professional services team.

As a Network Infrastructure Engineer, you will play a critical role in managing our clients' network and ensuring the performance of their traffic are optimized and secure.

You will be responsible for implementing and managing WAN optimization solutions, conducting performance assessments as well as providing expertise in mitigating network performance issues.

Responsibilities:

• Deploy and maintain WAN optimization solutions to optimize clients' network performance.
• Implement network Infra and security policies, standards and procedures to ensure compliance with industry regulations and best practices.
• Collaborate with cross-functional teams to ensure targeted network traffic are optimized and secured.
• Stay updated with the latest endpoint security threats, vulnerabilities and industry trends and proactively recommend and implement appropriate countermeasures.
• Provide technical guidance and support to cross-functional teams during network incidents and investigations.
• Document WAN optimizer configurations, processes and procedures.

Qualifications:

• Bachelor's degree/Diploma in Computer Science, Information Security or a related field.
• Professional certifications for Network Infrastructure products, certification for Riverbed is favored.
• Familiarity with managing/implementing Network management platforms and tools at enterprise level.
• Understanding of network traffic and their protocols.
• Familiarity with security standards and frameworks (NIST, CIS) and their application for network products.
• Excellent analytical and problem-solving skills to identify and resolve network issues.
• Strong communication and collaboration skills to work effectively with clients, cross-functional teams and stakeholders.
• Able to work in a fast-paced environment and manage multiple priorities effectively.

We are seeking a highly skilled Network Infrastructure Specialist to join our team. The ideal candidate will have 1–3 years of experience in IT support, networking, or systems administration.

• Key Responsibilities:
• Setup and configuration of Windows OS (client & server)
• Network support (LAN/WAN, TCP/IP, routers, switches, Wi-Fi)
• Troubleshooting PC hardware and software issues
• Basic server administration (Active Directory, file sharing, backup)
• IT security best practices (antivirus, firewalls, user access control)

A bachelor's degree in Information Technology, Computer Science, Engineering, or related field is required.

Familiarity with ERP/MES systems, printers, scanners, barcode systems, and other technologies is a plus.

This is an excellent opportunity for individuals who enjoy working with technology and want to develop their skills in a dynamic environment.

We offer a competitive compensation package and opportunities for growth and professional development.

An IT Operations Technician will be responsible for the upkeep and maintenance of system and network operations, ensuring high availability and performance.

• Monitoring and maintaining IT systems, servers, and network devices to ensure high availability and performance.
• Performing daily system health checks and resolving alerts or incidents in a timely manner.
• Providing technical support for user account management (Active Directory, Exchange, O365, etc.)
• Assisting in patch management, software updates, and backups to prevent system downtime.
• Maintaining an inventory of IT hardware, software, and licenses to optimize resource utilization.

The successful candidate will have experience in system and network administration, including:

• System monitoring and troubleshooting
• IT security best practices and compliance
• Technical documentation and knowledge sharing
• Collaboration with cross-functional teams

This role offers opportunities for professional growth and development, as well as a competitive salary and benefits package.

The ideal candidate will have strong communication and problem-solving skills, as well as the ability to work independently and as part of a team.

We are seeking a skilled Network Infrastructure Specialist to lead the design, implementation, and delivery of client system projects.

• Conduct Factory Acceptance Tests (FAT) and prepare detailed reports for analysis and decision-making purposes.
• Provide training, presentations, and technical support to ensure seamless adoption of new systems.
• Document system designs, diagrams, and configuration profiles for future reference and knowledge sharing.
• Develop infrastructure security policies and procedures to safeguard against potential threats.
• Prepare FAT and SAT procedures and reports for quality assurance and compliance purposes.

• Bachelor's degree in Computer Science, Networking, or related field with strong theoretical foundations.
• At least 5 years of relevant experience in designing and implementing complex network infrastructures.
• Certifications: CISCO (CCNP preferred), NetApp/EMC (NCDA preferred), VMware (VCIX6-DCV preferred).

• To provide Level 2 technical support for resolving open trouble tickets within agreed Service Level Agreements (SLAs).
• To manage and configure network devices and services for transmission networks.
• To lead or participate in technical delivery teams during acceptance tests.
• To ensure all technical details and relevant documents, such as Certificates of Acceptance (CA) and Acceptance Test Plans (ATP), are collected and properly stored in our database.

We seek a highly skilled professional to oversee our ongoing Cable Laying projects.

• Configure internal systems and diagnose technical issues using tools like Ariba, SAP Business Network, Streamline and Sesami.
• Train new system users and set up their accounts efficiently.
• Collaborate with teams including Purchases, Sales, Accounts, HR, and Project teams to ensure the system meets various departmental requirements.

You will be responsible for managing our server and implementing the latest trends in systems and related technologies. Key qualifications include:

• Bachelor Degree in Information Technology.
• Excellent problem-solving and communication skills.
• Knowledge of system security techniques.
• Ability to work effectively independently and as part of a team.

About SpeQtral:

SpeQtral is a Singapore-based quantum communications company that develops and deploys advanced Quantum Key Distribution (QKD) technology to secure critical networks against present and future cyber threats, including those posed by quantum computers. Founded with deep expertise in quantum physics and satellite engineering, SpeQtral works on terrestrial and space-based QKD systems, enabling governments, enterprises, and network operators to establish quantum-safe encryption for long-distance communications. Our mission is to accelerate the global adoption of quantum-secure networks by making trusted key distribution scalable, practical, and interoperable with existing infrastructures.

Job Summary

We are seeking a hands-on Network Infrastructure Engineerwith 2–5 years of experience to support SpeQtral's Quantum Network programmes. The ideal candidate will be responsible for designing, implementing, and maintaining secure network infrastructures. This hybrid role spans both network security engineering and infrastructure/system implementation, ideal for candidates who enjoy working across networking, servers, and cloud environments. You will be responsible for designing, implementing, and maintaining secure and reliable quantum network.

Key Responsibilities

Quantum Programme Support:

• Understand customers' technical requirements to provide technical support for fibre QKD network deployment between sites.
• To be able to implement the QKD infrastructure network design, which includes server provisioning, configuring virtualised environments (e.g. using Proxmox), network configuration as well as installation and configuration of fibre QKD systems
• Conduct preventive maintenance and checks to QKD systems
• Investigate first line support calls assigned and identify the root cause of incidents and problems.
• Troubleshoot and resolve hardware, software, network connectivity issues for projects that had been set up.
• Liaise with customers and principal on escalated incidents
• Ensure the efficient and comprehensive resolution of incidents and requests.
• Provide training to end users on QKD network operations

Network and Security Engineering:

• Design, configure, and manage switches, firewalls, VPNs, IDS/IPS systems, and other security tools
• Develop and enforce security policies and procedures to ensure compliance with best practices.
• Conduct vulnerability assessments, penetration tests and remediation activities
• Maintain accurate documentation of network designs, configurations and policies.

Infrastructure Engineering:

• Managing company networking, servers and IT hardware
• Administer and secure cloud and SaaS platforms (AWS, Microsoft 365)
• Support and configure virtualised environments (e.g. Proxmox)

Required Qualifications

Experience:

• 2 to 5 years in network security, IT security, or a related field. Fresh graduates are encouraged to apply.

Education:

• Dip/Bachelor's degree in Computer Science, Information Technology, Cybersecurity, or a related discipline (or equivalent work experience).

Technical Skills:

• Strong knowledge of TCP/IP, DNS, DHCP, VLANs, and core networking protocols.
• Proficiency with switches, firewalls, VPNs, IDS/IPS solutions.
  • Familiarity with virtualization using Proxmox hypervisors or other type of related solutions
  • Exposure to scripting languages (Python, Bash, Powershell)
  • (Good to have) Experience with vulnerability assessment tools (e.g., Nessus, OpenVAS) and penetration testing methodologies.
  • (Good to have) Familiarity with security frameworks and compliance standards.

Certifications:

• Cisco CCNA/CCNP, CompTIA Security+, CEH, or equivalent.

Soft Skills:

• Excellent analytical and problem-solving abilities.
• Strong communication skills and the ability to work collaboratively in a team environment.
• Proactive and responsive on assigned tasks and incidents follow-up
• Team player and can work independently under minimum supervision

Good to have experiences

· Experience with Grafana or other monitoring/visualization tools.

· Knowledge of cloud security best practices.

· Prior exposure to quantum communications or advanced networking research.

· Willingness to be on scheduled standby for field service/maintenance.