Total 13 computer security job vacancies

Job Tasks and Responsibilities

• Conduct cloud security assessments, architecture reviews and risk assessments for GCC and public sector cloud environments on AWS and Azure
• Design, implement and maintain secure cloud architecture, landing zones, guardrails and baseline configurations across AWS and Azure platforms
• Harden cloud infrastructure, services, virtual machines, containers and platform components based on approved security standards and benchmarks
• Develop scripts and Infrastructure as Code to automate cloud security hardening, monitoring, compliance checks and remediation activities
• Implement and manage cloud identity and access management controls including least privilege, federation, privileged access, secrets and key management
• Configure and maintain cloud security controls such as network segmentation, firewalls, WAF, DDoS protection, private connectivity and encryption
• Maintain cloud security monitoring, logging and alerting capabilities, and support threat detection, investigation and incident response activities
• Work with Cloud, DevOps and Application teams to integrate security controls into CI/CD pipelines and secure software delivery processes
• Perform vulnerability assessments, configuration reviews and remediation tracking for workloads deployed on AWS and Azure
• Conduct reviews to ensure compliance with security policies, public sector requirements, data residency controls and cloud governance standards
• Work with Engineering and Operations teams to manage cloud security findings and drive closure through the defect life cycle
• Improve cloud security processes, standards, playbooks and tools to enhance security posture and operational efficiency
• Take on a secondary role as a DevSecOps Engineer or Cloud Platform Security Engineer where required by project needs
• Collaborate with cross-functional teams to enhance security across the cloud development and operations pipeline

EXPERIENCE AND SKILLS NEEDED

• Min 4 years of experience in cloud security engineering, cloud security assessment, analysis and remediation
• Experience in AWS and Azure, including GCC and public sector / regulated cloud environments, will be an added advantage
• Experience in secure cloud architecture design, landing zones, account/subscription segregation and cloud governance will be an added advantage
• Experience in agile development environment will be an added advantage
• Experience with continuous integration and continuous delivery using GitLab, Azure DevOps, GitHub Actions, Jenkins or other similar tools will be an added advantage
• Experience with Infrastructure as Code tools such as Terraform, CloudFormation, Bicep, ARM templates or equivalent will be an added advantage
• Experience with AWS security services such as IAM, Organizations, Control Tower, KMS, CloudTrail, Config, GuardDuty, Security Hub, Inspector, WAF or equivalent will be an added advantage
• Experience with Azure security services such as Microsoft Entra ID, Azure Policy, Key Vault, Defender for Cloud, Microsoft Sentinel, Azure Monitor, Azure Firewall or equivalent will be an added advantage
• Experience with cloud security posture management (CSPM), cloud workload protection (CWPP), CNAPP tools such as Wiz, Prisma Cloud, Defender for Cloud, Lacework, Orca or equivalent will be an added advantage
• Experience with container and Kubernetes security for AKS, EKS, image scanning, runtime protection and secrets management will be an added advantage
• Experience with IAM, PAM, zero trust, encryption, PKI, SIEM/SOAR, incident response and cloud logging will be an added advantage
• Experience with vulnerability management and cloud-native security testing tools, including SAST, DAST, SCA, secrets scanning or equivalent will be an added advantage
• Experience with compliance and governance standards such as CIS Benchmarks, NIST, ISO 27001, SOC 2, PCI DSS and applicable GCC / public sector regulatory requirements will be an added advantage
• Certified cloud and security professionals such as AWS Certified Security – Specialty, AWS Solutions Architect, Microsoft Certified: Azure Security Engineer Associate (AZ-500), Azure Solutions Architect, CCSP, CCSK, CISSP, CISM or equivalent will be an added advantage
• Security testing-specific certifications such as CEH, OSCP, GPEN, GWAPT or equivalent will be an added advantage.
• Degree or Diploma in Computer Science, Computer or Electronics Engineering, Information Technology or related disciplines.

IAM Operations

Manage the day-to-day operations of IAM systems, including provisioning, de-provisioning, and lifecycle management of user and machine identities. Administer and maintain Active Directory and LDAP directory services, ensuring accurate and up-to-date identity records across the environment. Operate and support One Identity solutions, handling configuration, troubleshooting, and routine maintenance. Process access requests in a timely manner, ensuring requests are fulfilled in accordance with established policies and approval workflows. Monitor IAM systems for anomalies, policy violations, and potential security threats, escalating and resolving issues promptly. Maintain accurate documentation of IAM configurations, procedures, access records, and operational runbooks.

Access Governance and Compliance

Support periodic access reviews and IAM audits, identifying and remediating access risks in line with internal policies and regulatory requirements. Assist in tracking IAM-related risks and remediation action plans, providing updates to relevant stakeholders. Generate reports on access activity, identity lifecycle status, and compliance posture for management and audit purposes.

Stakeholder Support

Serve as the first point of contact for IAM-related issues and queries from users and IT teams, providing clear and timely resolution. Work closely with the broader IT and security teams to ensure identity and access controls remain aligned with business needs. Maintain service quality and operational consistency as the team transitions project-focused members to new IAM initiatives.

The required managed services include, but are not limited to:

• Network Operations & Monitoring
  Continuous monitoring, proactive health checks, alerting, and backup verification.
• Incident & Problem Management
  End-to-end incident handling, root cause analysis (RCA), and timely resolution aligned with SLA commitments.
• Infrastructure Management & Lifecycle
  Management of network devices including routers, switches, firewalls, and load balancers, as well as upgrades and lifecycle activities.
• Security Management
  Firewall policy management, log monitoring, compliance checks (e.g., CIS benchmarks), and threat escalation.
• Patch & Vulnerability Management
  Vulnerability scanning, patch deployment, prioritization, and compliance reporting.
• Asset & Configuration Management
  CMDB updates, asset reconciliation, and configuration tracking.
• Change & Release Management
  Execution of changes in accordance with ITIL processes, including risk assessment and rollback planning.
• Capacity & Performance Management
  Monitoring, trend analysis, and capacity planning recommendations.
• Documentation & Reporting
  Maintenance of network documentation, SOPs, and delivery of operational and monthly performance reports.

Technology Environment

The environment includes (but is not limited to):

• Cisco (routers, switches, load balancing technologies)
• Palo Alto firewalls
• Check Point firewalls
• F5 Load Balancers

Deliverables

• Daily operational monitoring and reporting
• Monthly service reports covering SLA performance, incidents, patch compliance, security posture,asset reconciliation, and capacity planning

Observability Engineering:

•Architect, deploy, and optimize Splunk ITSI dashboards, KPIs, glass tables, and service maps.

•Continuously enhance visibility into the health and performance of applications and infrastructure.

Proactive Monitoring & Investigation:

•Leverage observability data to investigate system issues and anomalies in real-time.

•Identify root causes using advanced event correlation, log analysis, and telemetry patterns.

Predictive Analytics & ML Integration:

•Apply machine learning models to detect anomalies, forecast system behavior, and prevent outages.

•Collaborate with data teams to operationalize predictive analytics for IT incident management.

Service Mapping with ServiceNow:

•Maintain and automate the synchronization of Configuration Items (CIs) from ServiceNow to Splunk.

•Ensure accurate service correlation and dependency mapping across platforms.

As a (job role), you will need to have:

•Degree in Computer Science, Engineering, Information Systems, or equivalent.

•Hands-on experience with Splunk ITSI or similar observability platforms.

•Strong knowledge of ServiceNow, including CMDB and CI relationships.

•Familiarity with machine learning for anomaly detection and predictive analytics.

•Proficient in scripting (Python, linux) for automation.

•Understanding of ITIL and modern IT operations practices.

•Analytical mindset with strong troubleshooting and investigation skills using observability data.

Job Scope

As a Systems Specialist, you will be providing support in the following areas:

a) Administration and maintenance of the following:

• Backup System, CA-1

• z/OS operating system and JCL (Job Control Language)

• Tape management systems and automated tape libraries

• Backup hardware (Data domain/ECS/ Hitachi CGX/Tape library)

b) Carrying-out security patching, hardening, upgrade of the abovementioned software as and when required

c) Carrying-out installation and configuration of the abovementioned backup software

d) Monitor system performance and capacity planning for backup storage requirements

e) Work with hardware and software vendor to resolve technical issue

f) Review logs from the abovementioned hardware and software

g) Participate in technical exercises as and when required.

Requirements

a) Minimum 3-5 years experience with mainframe backup systems, specifically CA-1

b)Strong knowledge of z/OS operating system and JCL (Job Control Language)

c) Understanding of mainframe storage concepts including DASD, tape, and virtual storage

d) Experience with tape management systems and automated tape libraries

e) Minimum 2 years of relevant working experience in technology related to abovementioned hardware and software is preferred

f) Must be able to work beyond business hours including weekend when necessary

g) Possess good interpersonal and communication skills

h) Have good command of written and oral English

Job Summary:

The Messaging &Collaboration Architect is responsible for designing, implementing, and governing enterprise messaging platforms across hybrid environments, including Microsoft Exchange Server (On-Premises), Exchange Online, and Microsoft 365services hosted within Microsoft Azure.

This role provides architectural leadership for messaging transformation initiatives, cloud migration programs, platform modernization, and operational governance. The architect ensures secure, scalable, highly available, and compliant messaging services while enabling seamless collaboration across the enterprise.

In addition, the role works closely with infrastructure, security, cloud, and workplace teams to define messaging strategies, establish technical standards, and support enterprise transformation initiatives.

Key Responsibilities:

Messaging Architecture &Strategy

·      Define enterprise messaging and collaboration architecture standards.

·      Develop strategic roadmaps for Exchange modernization and Microsoft 365 adoption.

·      Design hybrid messaging architectures supporting coexistence between on-premise and cloud environments.

·      Establish messaging governance, security, compliance, and operational standards.

·      Lead technical assessments and architecture reviews for messaging-related initiatives.

·      Ensure architecture aligns with enterprise technology and cloud strategies.

Microsoft Exchange Platform Architecture

·      Design and govern Microsoft Exchange Server environments (2016, 2019, Subscription Edition).

·      Design Exchange Online architectures within Microsoft 365.

·      Architect hybrid Exchange deployments and migration strategies.

·      Define mailbox resiliency, high availability, disaster recovery, and backup architectures.

·      Design transport, routing, mail flow, and message hygiene solutions.

·      Lead platform capacity planning and performance optimization initiatives.

Microsoft 365 & Azure Integration

·      Architect Microsoft 365 messaging and collaboration services.

·      Design Azure-integrated messaging solutions supporting hybrid cloud operations.

·      Implement and govern Azure networking requirements supporting Exchange Online connectivity.

·      Design identity integration leveraging Azure Active Directory and Entra ID.

·      Support integration with Microsoft Teams, SharePoint Online, OneDrive, and related collaboration services.

·      Ensure secure cloud adoption through modern authentication and conditional access controls.

Messaging Security &Compliance

·      Design secure messaging environments aligned with Zero Trust principles.

·      Architect email protection solutions including:

o  Microsoft Defender for Office 365

o  Exchange Online Protection (EOP)

o  Anti-spam and anti-phishing controls

o  Data Loss Prevention (DLP)

o  Information Protection and Sensitivity Labels

·      Ensure compliance with enterprise security standards and regulatory requirements.

·      Support eDiscovery, retention policies, legal hold, and audit requirements.

·      Collaborate with cybersecurity teams on threat management and incident response.

Cloud Migration &Transformation

·      Lead Exchange migration projects from on-premise environments to Microsoft 365.

·      Design mailbox migration strategies and coexistence models.

·      Develop migration runbooks, technical procedures, and rollback plans.

·      Assess legacy environments and recommend modernization approaches.

·      Provide architecture leadership for tenant consolidation, mergers, acquisitions, and divestitures.

·       Drive adoption of modern workplace and collaboration technologies.

Service Delivery &Operational Governance

·      Establish operational standards and support models for messaging services.

·      Define monitoring, reporting, and service health management requirements.

·      Ensure adherence to ITIL processes including Incident, Problem, Change, and Configuration Management.

·      Support major incident management and root cause analysis activities.

·      Participate in service reviews and continuous improvement initiatives.

·      Define platform KPIs, SLAs, and operational metrics.

Automation & AI-Enabled Operations

·       Design automation solutions for messaging administration and operational activities.

·       Utilize PowerShell scripting for provisioning, administration, and reporting.

·       Promote Infrastructure as Code and automation-first approaches where applicable.

·       Leverage Microsoft Copilot and AI-enabled operational tools to improve support efficiency.

·       Develop operational dashboards and reporting capabilities using Power Platform technologies.

Collaboration &Stakeholder Management

• Work closely with Infrastructure, Cloud, Security, Workplace, and Application teams.
• Provide technical leadership and mentorship to engineers and administrators.
• Present architecture recommendations to senior management and customers.
• Facilitate design workshops and architecture review sessions.
• Maintain architecture documentation, standards, and knowledge repositories.

Required Skills & Qualifications:

·      8+ years of experience in Microsoft Messaging and Collaboration technologies.

·      Hands-on experience with:

o  Microsoft Exchange Server (2013/2016/2019/SE)

o  Exchange Online

o  Microsoft365 Administration

o  Hybrid Exchange Deployments

o  Azure Active Directory / Entra ID

o  Azure Networking Concepts

o  Microsoft Teams Integration

o  Mail Flow and Transport Services

o  PowerShell Automation

o  Messaging Migration Projects

·      Strong knowledge of:

o  Hybrid Messaging Architectures

o  High Availability and Disaster Recovery

o  Authentication and Identity Management

o  Email Security Technologies

o  Compliance and Governance Frameworks

o  Microsoft Licensing Models

o  Enterprise Infrastructure Platforms

·      Experience supporting:

o  Large-scale enterprise messaging environments

o  Cloud transformation programs

o  Messaging modernization initiatives

o  Managed services operations

Key Competencies :

·      Enterprise Architecture Thinking

·      Technical Leadership

·      Strategic Planning

·      Solution Design

·      Stakeholder Management

·      Problem Solving and Troubleshooting

·      Communication and Presentation Skills

·      Risk Assessment and Mitigation

·      Documentation and Governance Discipline

·     Customer-Focused Mindset.

Qualifications and Certifications :

·       Education

• Bachelor's Degree in Information Technology, Computer Science, Engineering, or equivalent experience.

·       Preferred Certifications

• Microsoft Certified: Messaging Administrator Associate
• Microsoft Certified: Enterprise Administrator Expert
• Microsoft Certified: Azure Solutions Architect Expert
• Microsoft Certified: Identity and Access Administrator Associate
• Microsoft Certified: Security Operations Analyst Associate

o   ITIL Foundation or ITIL 4 Managing Professional

·       Advantageous Certifications

o  TOGAF

o  CISSP

Working Experience And Skill Requirement

In addition to the Mandatory Basic Non Enterprise Server Skill Requirements:

a) Must have at least two (2) years’ post graduate hands on experience in setting up and administration of Linux OS (such as Redhat Linux and Suse Linux) and server;

b) Must have two (2) years’ working experience in applying Linux patches, troubleshooting Linux server issues and upgrading of Server OS;

c) Must have one (1) year working experience with VM including cloning, taking snapshots;

d) Must be willing to pick up skills in basic networking and configuration of network switches as well as server services ie file transfer etc.

Job Description

a) Install, set up, administer Linux servers and server-related services / modules;

b) Troubleshoot issues related to Linux Operating Systems;

c) Prepare and set up testing and production environment;

d) Prepare, carry out and document testing scenarios and da

e) Prepare and maintain system documentation;

f) Produce deliverables according to Group standards and procedures;

g) Assist Project Leaders in the study and design of application systems and work coordination, project management and user training work;

h) Troubleshooting and supporting end-users in the implementation and maintenance of systems;

i) Train other contract programmers in the relevant skills;

j) Participate in Disaster Recovery activities eg simulation exercise at Disaster Recovery sites;

k) Learn / pick up new tools related to the administration and monitoring of the System;

l) Maintenance of servers / systems as assigned by the supervisors;

m) Any other tasks related to Server Administration and Maintenance as assigned by the supervisors.

KeyResponsibilities

• Design, deploy, and manage Red Hat OpenShift clusters (on-prem / cloud / hybrid).
• Develop, automate, and maintain cloud-native applications, platform services, and infrastructure components on OpenShift, leveraging containerization, Kubernetes, CI/CD, and DevOps practices to deliver scalable, secure, and resilient solutions.
• Install, configure, upgrade, and patch OpenShift components.
• Manage container platforms, namespaces, RBAC, networking, and storage.
• Support CI/CD integration with OpenShift (Jenkins, GitLab, Azure DevOps, etc.).
• Monitor cluster performance, capacity, and availability.
• Troubleshoot cluster, application, and infrastructure issues.
• Implement security best practices (image scanning, secrets, policies).
• Work closely with DevOps and application teams for container adoption.
• Automate platform operations using Ansible / Helm / Operators.
• Maintain documentation and operational runbooks.

Required Skills& Experience

• Strong hands-on experience with Red Hat OpenShift.
• Must have Red Hat certifications (RHCSA, RHCE, OpenShift certification).
• Solid understanding of Kubernetes, Docker, and container orchestration.
• Experience with Linux system administration.
• Knowledge of OpenShift networking (SDN/OVN), routes, services, ingress.
• Experience with persistent storage (Ceph, NFS, cloud storage).
• Familiarity with CI/CD pipelines and DevOps practices.
• Required office hours work and 24*7 Support

Job Scope

You will be providing support for the following areas:

a) Reviewing and optimising SQL queries written by application developers to ensure optimal performance and adherence to database standards

b) Assisting in database design activities, including table structures, indexes, and relationships to support new application features or enhancements

c) Troubleshooting database-related issues reported by application teams, including SQL error codes, performance problems, and data integrity concerns

d) Supporting database changes through the development lifecycle (DEV, TEST, UAT, PROD), including coordinating database object migrations between environments

e) Monitoring application database performance and implementing necessary tuning measures like reorganising tablespaces, updating statistics, and adjusting buffer pools

f) Providing guidance to application developers on DB2 best practices, coding standards, and efficient query writing techniques

g) Supporting application testing activities by helping with data refresh requests, test data preparation, and database-related test case validation

Requirements

a) Strong background in IT, Computer Science / Computer Engineering, or related discipline

b) Minimum 5 years of relevant working experience in the above technology is preferred.

c) Relevant experience in the following would be advantageous:

• Working with JCL (Jon Control Language)

• Understanding of VSAM and other mainframe storage concepts

• Familiar with database utilities and tools

• Experience with database backup and recovery procedures

d) Possesses good communication and interpersonal skills

e) Have good command of written and oral English

f) Must be able to work beyond business hours including weekend when necessary

Job Description: 

1) Provide technical support and maintenance for mainframe tools including JOBSCAN, ChangeMan SCM and IBM ADFz bundle products such as FILE MANAGER & DEBUG Software

2) Support the transition from ChangeMan to IBM ADFz bundle products

3) Configure and maintain Software Configuration Management (SCM) systems

4) Design and implement CI/CD pipelines for mainframe applications

5) Troubleshoot and resolve technical issues related to mainframe development tools

6) Collaborate with development teams to ensure smooth application delivery

7) Document processes, procedures and system configurations

8) Any other tasks related to software tool administration and maintenance as assigned

Working Experience and Skill Requirement:

1) Minimum 3 years of relevant working experience in technology related to above mentioned software is preferred

2) Hands-on experience with ChangeMan SCM, including configuration management and version control is preferred

3) Proficiency in COBOL, JCL, and DB2

4) Strong knowledge of mainframe development tools and technologies

5) Experience in scripting using REXX, JCL or similar mainframe scripting languages

6) Demonstrated problem-solving and analytical skills

• Client Location: Changi Business Park (CBP),Singapore
• Service Type: 24x7 L1 Support (Core Banking)
• Start Date: 1 July 2026
• Duration: (12 months)