全职 Network Engineer 工作, 薪水 up to SGD 5,000, RECRUIT HAUS PTE. LTD. Islandwide (Singapore) 公司招聘中 - Ricebowl

We are seeking a highly skilled Senior Network & Security Engineer (L2/L3) to support and operate complex, multi-vendor enterprise network and security environments. This role requires deep technical expertise in routing, switching, network security, automation, and operational governance, along with the ability to manage incidents, drive service excellence, and contribute to continuous improvement initiatives across mission-critical infrastructure.

Responsibilities

• Provide Level 2 and Level 3 operational support for enterprise network and security infrastructure, ensuring stability, performance, and availability.
• Act as an escalation point for complex incidents, problems, and service disruptions by performing root cause analysis (RCA) and implementing permanent fixes.
• Manage and resolve incidents in accordance with ITIL-based Incident, Problem, and Change Management processes.
• Ensure adherence to SLA, OLA, and KPI commitments while maintaining high customer satisfaction.
• Plan, review, and implement network and security changes in compliance with approved Change Management frameworks.
• Perform configuration, upgrades, patching, and optimization of network and security devices.
• Validate and document changes, ensuring rollback plans and risk mitigation strategies are in place.
• Enforce security policies, standards, and best practices across the network infrastructure.
• Support compliance with internal governance requirements and client regulatory standards.
• Monitor and analyse security events using SIEM and monitoring tools, identifying potential threats and vulnerabilities.
• Support vulnerability assessments, remediation activities, and security audits.
• Operate and support technologies including, but not limited to:Cisco RoutersCisco SwitchesWireless LANFirewallsLoad BalancersProxy SolutionsMonitoring & SIEMSecurity & Risk Management Tools
• Design, develop, and maintain network automation solutions using scripting languages and orchestration tools.
• Leverage tools such as Python, Ruby, Ansible, AlgoSec, and Chef to reduce manual effort and operational risk.
• Identify opportunities for process optimisation, standardisation, and automation within network and security operations.
• Develop, maintain, and review technical documentation, including network diagrams, SOPs, runbooks, and CMDB records.
• Ensure accurate and up-to-date operational documentation to support audit readiness and operational continuity.
• Conduct knowledge transfer sessions and provide technical training to operations teams and junior engineers.
• Collaborate with project teams during solution design, deployment, and commissioning.
• Ensure structured and effective handover from project delivery to operations.
• Participate in operational review meetings, service improvement initiatives, and post-incident reviews.
• Contribute technical expertise to infrastructure modernisation and security enhancement programmes.
• Be willing to work extended hours, weekends, and public holidays when required.
• Participate in standby and on-call rotations to support a 24×7 operational environment.

Requirements

• Minimum 5 years of hands-on experience in enterprise network and security operations.
• Strong operational experience with Cisco networking technologies, including Routing, Switching, and Wireless LAN.
• Diploma or Bachelor's Degree in Engineering, Information Technology, or a related discipline.
• Cisco CCNP certification is preferred. Additional security certifications are an advantage.
• Proven experience supporting multi-vendor, multi-site enterprise environments.
• In-depth expertise in:IP routing and switching protocols (OSPF, BGP, EIGRP, VLANs, STP, QoS)Network security architecture and firewall policy managementLoad balancing and traffic optimisation
• Strong troubleshooting and diagnostic skills across network and security infrastructure.
• Experience working with SIEM, monitoring, and logging platforms.
• Good understanding of network resilience, high availability (HA), and disaster recovery (DR) concepts.
• Willingness to work on a 24/7 rotating shift schedule, including nights, weekends, and public holidays, when required.