IT Systems Administrator

ASTRATA GROUP PTE. LTD.; Singapore; On-site; SGD 60,000 - 80,000; Full time

Job summary

A leading IT solutions provider in Singapore is seeking an experienced IT Administrator to manage cloud systems on AWS and coordinate between cloud and on-premise infrastructures. Key responsibilities include monitoring performance, providing technical support, and ensuring security protocols. The ideal candidate will possess strong problem-solving skills, experience with AWS, and proficiency in IT administration frameworks. This role may require after-hours support and occasional weekend work for maintenance purposes.

Qualifications

• Proven experience as an IT Administrator or similar role.
• Strong knowledge of AWS cloud services and administration.
• Experience working with external IT vendors and service providers.
• Understanding of network infrastructure, security protocols, and system administration.

Responsibilities

• Administer and maintain cloud-based systems hosted on AWS.
• Coordinate with IT partners for on-premise infrastructure support.
• Provide technical support to end-users across the organization.
• Monitor system performance and troubleshoot technical issues.

Skills

AWS cloud services administration

Problem-solving and troubleshooting

Communication skills

Network infrastructure knowledge

Automation using PowerShell

Experience with monitoring tools

Education

Bachelor's degree in Computer Science or related field

Tools

Amazon Web Services (AWS)

SolarWinds

JIRA

Veeam Backup

Job description

Key Responsibilities

Cloud Infrastructure Management

• Administer and maintain cloud-based systems hosted on Amazon Web Services (AWS)
• Monitor cloud performance, security, and resource utilization
• Implement backup and disaster recovery procedures for cloud assets
• Optimize cloud infrastructure for cost-efficiency and performance
• Hands‑on experience managing workloads on Amazon Web Services (AWS)
• Core services: EC2, RDS, S3, VPC, IAM, CloudWatch, CloudTrail, Backup
• Familiar with security groups, NACLs, routing tables, and load balancers (ALB/NLB)

On-Premises IT Collaboration

• Coordinate with IT partners to support and maintain on-premise infrastructure
• Act as primary point of contact between the organization and external IT service providers
• Ensure seamless integration between cloud and on-premise systems
• Oversee service level agreements and vendor performance
• Strong experience administering Windows Server and/or Linux (user management, services, logs, patching)
• Familiarity with Active Directory, DNS, DHCP, Group Policy
• Experience managing File servers, Application and Database server
• Good understanding of TCP/IP, subnets, VLANs, routing
• Knowledge of firewalls and network security concepts
• Able to troubleshoot connectivity issues between on‑prem and cloud systems
• Experience using monitoring tools (SolarWinds)
• Practical experience setting up and managing Veeam Backup
• Ability to document and execute restore and disaster recovery procedures
• Ability to automate routine tasks using PowerShell
• Familiar with JIRA ticketing

General IT Administration

• Provide technical support to end‑users across the organization
• Manage user accounts, access rights, and system permissions
• Monitor system performance and troubleshoot technical issues
• Maintain documentation of IT systems, procedures, and configurations
• Implement and enforce IT security policies and best practices
• Manage software licensing and hardware inventory
• Coordinate system updates, patches, and maintenance window

Required Qualifications

• Proven experience as an IT Administrator or similar role
• Strong knowledge of AWS cloud services and administration
• Experience working with external IT vendors and service providers
• Understanding of network infrastructure, security protocols, and system administration
• Excellent problem‑solving and troubleshooting skills
• Strong communication skills for liaising with technical and non‑technical stakeholders
• Ability to work independently and manage multiple priorities

Preferred Qualifications

• AWS certification (Solutions Architect, SysOps Administrator, or similar)
• Experience with infrastructure‑as‑code tools (Terraform, CloudFormation)
• Knowledge of hybrid cloud environments
• ITIL or similar IT service management framework experience
• Bachelor's degree in Computer Science, Information Technology, or related field

Personal Attributes

• Detail‑oriented with strong organizational skills
• Proactive approach to identifying and resolving potential issues
• Ability to work under pressure and respond to urgent technical issues
• Commitment to continuous learning and staying current with technology trends
• Strong sense of accountability and ownership

Working Conditions

• Provide after‑office‑hours support (on‑call / standby) for critical incidents and planned maintenance.
• Occasional night or weekend work may be required for planned maintenance, system upgrades, or incident response.