Network & Security Engineer


  • Participate and / or lead in key IT projects and operations to ensure proper Network Infrastructure, Security setup and administration. 
  • Administer company’s overall Network Infrastructure including routers, switches, load balancer and other network devices to meet the organization’s requirements. 
  • Implement security measures such as firewalls, intrusion detection/prevention systems (IDS/IPS), VPNs, SSL/TLS, access control lists (ACLs) to safeguard the network from unauthorized access and cyber threats. 
  • Ensure availability, reliability stability, and security of the Network Infrastructure. 
  • Monitor network performance, troubleshoot network issues, and perform regular maintenance tasks such as software updates, patches, hardening and hardware upgrades to ensure optimal network operation. 
  • Conduct regular security audits and assessments to identify vulnerabilities, assess risks, and develop strategies to mitigate potential security threats. Provide support and respond promptly to network emergencies or security incidents. 
  • Develop and maintain disaster recovery and business continuity plans for network infrastructure, ensuring rapid recovery and minimal downtime in the event of a disaster or network outage. 
  • Assess the security posture of cloud environments (Azure, Alibaba Cloud, etc.) and implement security controls to mitigate risks. 
  • Implement security measures and best practices for securing cloud-based services to secure cloud workloads and data.



  • Minimum 3 years of relevant working experience providing network operational and administration supporting Routers, Switches, WLAN and Network Security
  • Strong knowledge of network protocols and technologies like TCP/IP, VLANS, VPNs, OSPF, BGP and routing/switching. 
  • Proficient with network equipment from vendors like Palo Alto, Checkpoint, TrendMicro, Aruba, and Fortinet. 
  • Strong Knowledge of security best practices, including encryption, access controls, SIEM and vulnerability & patch management. 
  • Excellent troubleshooting and problem-solving skills. 
  • Leading IT projects and contributing to project implementations. 
  • Providing IT Infrastructure 24×7 Support and Standby for Incident calls or service calls.


Please write in with a full resume, present and expected salary, contact telephone number(s) and any other relevant information to:


Only shortlisted candidates will be notified


Personal Data Protection

In submitting your personal data and/or resume, you shall be deemed to consent to us collecting, using and disclosing your personal data for the purpose of assessing your job application. Information collected may also be disclosed to the PetroChina Group of Companies (which includes PetroChina International (Singapore) Pte. Ltd., Singapore Petroleum Company Limited) for this purpose.