Top Tech Jobs & Startup Jobs in Singapore

Monitor and operate enterprise network services across LAN, WAN, wireless, data center, remote-access, and cloud-connected environments. Diagnose incidents, execute approved changes, maintain configurations and documentation, support DNS, DHCP, IPAM, and authentication services, and perform capacity planning. The role also involves vendor coordination, automation scripting, disaster recovery testing, resilience exercises, and rostered after-hours support.

Administer and improve enterprise network security services, including firewalls, VPNs, IPS/IDS, segmentation, cloud security, vulnerability remediation, and incident response. Implement governed security changes, monitor platform performance and resilience, investigate security events, maintain operational documentation, support compliance activities, and develop automation. Collaborate with network, cloud, systems, security, vendors, carriers, and client stakeholders in a managed services environment.

Designs and maintains automated testing frameworks and comprehensive test suites for web, mobile, API, and infrastructure systems. Responsibilities include functional, regression, exploratory, performance, integration, UAT, and security testing; CI/CD integration; defect lifecycle management; test strategy development; and continuous improvement of agile testing practices. The role collaborates with product owners, business analysts, software engineers, and system owners to improve coverage and prevent production defects.

Design, implement, administer, and govern SAP access controls across GRC, HANA, S/4HANA, ECC, BW, Fiori, and connected platforms. Manage roles, privileges, workflows, segregation-of-duties analysis, access reviews, audit policies, encryption, authentication, and emergency access. Support SOX ITGC, privacy, internal and external audits, security workstreams, incident troubleshooting, documentation, cross-functional delivery, and mentoring.

Administer and maintain enterprise VMware environments (vSphere/ESXi/vCenter); perform monitoring, patching, troubleshooting, capacity management, backups and DR validation; support ITIL-based incident/change/problem processes; maintain runbooks; collaborate with infrastructure, network, security, and application teams; support automation and continuous improvement.

Administer and support Linux/Unix servers and cloud platforms (AWS/Azure/GCP) in a 24x7 environment. Perform patching, monitoring, backup/DR, incident/change/recovery activities, develop automation and scripts, maintain operational documentation, and collaborate with security, network, and application teams.

Administer and maintain enterprise PeopleSoft environments including app/web servers, batch processing, patching, upgrades, database refreshes, performance tuning, disaster recovery, incident troubleshooting, and documentation. Collaborate with infrastructure, application, and vendor teams and follow ITIL processes.

Operate and improve enterprise Azure and AWS cloud platforms, using Terraform and IaC. Monitor and troubleshoot platform health, support Kubernetes/container environments, run disaster recovery testing, automate operational tasks, collaborate across teams, and contribute to incident RCA and documentation to ensure platform resilience and service continuity.