Senior Network Engineer - Migrations & Security

Rapsys Technologies Pte Ltd.; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

Rapsys Technologies Pte Ltd. in Singapore is seeking an experienced Network Engineer to design, implement, and maintain complex network infrastructures.

The role focuses on reliability, security, and performance of our organization’s network systems. The ideal candidate has 10+ years in network engineering and strong expertise in enterprise network infrastructure, switch migration and configuration, along with a proven ability to coordinate with security and operations teams.

Qualifications

• 10+ years of relevant experience in Network Engineering.
• Strong experience in enterprise network infrastructure, switch migration and configuration.

Responsibilities

• Review network architecture, design and migration requirements; develop implementation, testing and rollback plans.
• Validate switch hardware, OS/firmware, licensing and compatibility.
• Perform switch build, configuration and firmware/OS upgrades.
• Implement network security hardening, including disabling unused ports/services and ensuring security compliance.
• Configure and validate SNMP, Syslog, NetFlow/sFlow, performance and interface monitoring.
• Execute switch migrations with pre/post-migration health checks, configuration backups and minimal downtime.
• Perform connectivity and functional testing and resolve migration-related issues.
• Maintain network diagrams, port mappings, IP addressing, configuration and security documentation.
• Provide post-migration support, monitor network performance and conduct knowledge transfer to operations teams.
• Coordinate with security, server, application, infrastructure and operations teams and obtain stakeholder sign-off.
• Prepare release readiness and migration documentation, including validation results and rollback procedures.

Skills

Network Switch Migration

Network Infrastructure & Configuration

Network Security Hardening

Job description

Rapsys Technologies Pte Ltd. in Singapore is seeking an experienced Network Engineer to design, implement, and maintain complex network infrastructures.

The role focuses on reliability, security, and performance of our organization’s network systems. The ideal candidate has 10+ years in network engineering and strong expertise in enterprise network infrastructure, switch migration and configuration, along with a proven ability to coordinate with security and operations teams.