RAPSYS TECHNOLOGIES PTE. LTD. Hiring! Full Time UNIX - Linux L3 Engineer in Islandwide (Singapore), Earn up to SGD 6,000 - Ricebowl

Key Responsibilities

Infrastructure Build & Implementation

• Install, configure, and harden UNIX/Linux servers.
• Build and configure Development, Test, UAT, and Production environments.
• Configure server storage, networking, security, and system services.

Project & L3 Support

• Provide L3 infrastructure support and resolve complex server issues.
• Collaborate with application, database, network, cloud, and security teams.
• Support infrastructure planning, design reviews, deployments, and cutover activities.
• Ensure infrastructure readiness for application onboarding and releases.

Automation

• Develop Shell and Python scripts for server provisioning and operational automation.
• Implement configuration management and Infrastructure-as-Code (IaC) practices.
• Standardise server builds and deployment procedures.

Security & Compliance

• Implement OS hardening and security best practices.
• Perform patching and vulnerability remediation.
• Ensure compliance with organisational and regulatory security standards.

Documentation

• Create and maintain Technical Design Documents (TDDs), SOPs, build documents, runbooks, and knowledge articles.
• Provide knowledge transfer to operations and support teams.

Must-Have Skills

• Strong Linux Administration, particularly RHEL / Oracle Linux.
• Strong experience in UNIX/Linux server build, configuration, and security hardening.
• Strong Shell Scripting and Python automation skills.
• Experience with High Availability and Clustering, preferably Veritas Cluster / VCS FSS.
• Experience with Storage: SAN/NAS and LVM.
• Strong troubleshooting and L3 support experience.

Good to Have

• Experience with AWS, Azure, and VMware.
• Infrastructure-as-Code and configuration management experience.
• IBM MQ experience.
• Disaster Recovery and capacity/performance management experience.