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Open nowPosted 22 days ago

Senior Network Engineer

MyCareersFuture94,028 open roles

Pay
SGD 6,500 – SGD 7,500 a month
Where
Central, Singapore
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Your applicationOpen nowSenior Network EngineerMyCareersFuture · Central, Singapore
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This job: posted 22 days ago

The posting

Job Description

We are looking for an experienced Senior Network Engineer to support a network switch migration project within a large-scale enterprise environment in Singapore. The successful candidate will be responsible for the planning, configuration, security hardening, migration, testing and post-implementation support of network switching infrastructure.

This role requires strong hands-on experience in network switch migration, network infrastructure configuration and network security hardening, with the ability to coordinate effectively with infrastructure, security, application and operations teams.

Key Responsibilities

Network Migration Planning & Design

  • Review network architecture, design documentation and migration requirements.
  • Validate switch hardware, software/firmware versions, licensing and compatibility.
  • Develop detailed implementation, migration, testing and rollback plans.
  • Identify technical dependencies, migration risks and outage requirements.
  • Coordinate migration activities with security, server, application and operations teams.

Switch Configuration & Implementation

  • Build and configure enterprise network switches according to approved designs and standards.
  • Upgrade switch firmware and operating systems to approved versions.
  • Review and validate existing network configurations before migration.
  • Perform configuration backups and maintain appropriate rollback procedures.

Network Security Hardening

  • Implement network security hardening in accordance with organisational security standards.
  • Disable unused ports, protocols and services where applicable.
  • Review switch configurations for security vulnerabilities and compliance requirements.
  • Ensure configurations comply with internal security, governance and audit standards.

Monitoring & Alerting

  • Integrate network switches with enterprise monitoring and alerting platforms.
  • Configure and validate SNMP monitoring, Syslog forwarding and NetFlow/sFlow where applicable.
  • Configure performance, capacity and interface utilisation monitoring.
  • Ensure environmental monitoring for temperature, power supply and fan status.
  • Configure appropriate operational alerts and validate that monitoring data is successfully received by monitoring platforms.

Migration Execution

  • Conduct pre-migration validation and network health checks.
  • Execute switch migrations according to approved implementation plans.
  • Coordinate migration activities with relevant application and infrastructure teams.
  • Minimise network downtime and business impact during migration activities.
  • Troubleshoot and resolve migration-related network issues.

Testing & Validation

  • Perform post-migration connectivity and functionality testing.
  • Validate network services, interfaces and configurations following migration.
  • Investigate and resolve issues identified during testing.
  • Ensure successful completion of migration acceptance criteria.

Documentation & Release Readiness

  • Create and maintain network diagrams, switch configuration records and port mappings.
  • Maintain IP addressing, security configuration and monitoring documentation.
  • Prepare implementation, testing and rollback procedures.
  • Prepare required documentation for release readiness and implementation approval.
  • Produce migration reports including validation results and stakeholder sign-off.

Post-Migration Support

  • Provide post-implementation monitoring and technical support.
  • Review network logs, alerts and performance for abnormalities.
  • Optimise configurations where required.
  • Conduct knowledge transfer and handover to operations teams.
  • Obtain stakeholder sign-off following successful migration.

Requirements

  • Minimum 10 years of relevant experience in network engineering, network infrastructure or similar roles.
  • Strong hands-on experience in network switch migration and implementation.
  • Strong knowledge of enterprise network infrastructure and switch configuration.
  • Experience in network security hardening and security compliance requirements.
  • Experience with network monitoring and alerting technologies including SNMP, Syslog and NetFlow/sFlow.
  • Strong troubleshooting skills across enterprise network environments.
  • Experience preparing network diagrams, configuration documentation, migration plans and rollback procedures.
  • Experience supporting network changes within controlled release and change-management environments.
  • Strong stakeholder management and cross-functional coordination skills.
  • Ability to work independently and support migration activities within tight project timelines.
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