Senior Network Engineer - Enterprise 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, ensuring reliability, security, and performance.

The role focuses on migration planning, security hardening, and coordination with security, server, and operations teams. Work from office in Singapore with 10+ years of enterprise networking experience preferred.

Qualifications

• 10+ years of experience in Network Engineering.
• Strong background in enterprise network infrastructure, switch migration and configuration.
• Experience with security hardening and access control measures.

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.
• 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, ensuring reliability, security, and performance.

The role focuses on migration planning, security hardening, and coordination with security, server, and operations teams. Work from office in Singapore with 10+ years of enterprise networking experience preferred.