Total 24 job vacancies by Opensource Technologies Pte. Ltd.

System Engineer

Engineers can preferably be degree holders who have at least 2 years’ experience if they do not do supervisory roles. Diploma holders will be given engineer.

At least 1 to 2 years working experience in assisting the senior engineer and able to work independently on their daily tasks.

1. Minimally need to have CCNA or networking equivalent qualification.

2. Have basic understanding of virtualization such as VMs

3. Have basic understanding on cybersecurity technologies, firewalls, antivirus etc.

4. Assist the senior engineer in carrying out daily tasks such as deploying laptops for exercises.

5. Assists users in preparing for cyber exercises, setup OS Windows login etc.

6. Need to take on routine O&S functions, basic system health checks on servers and storage.

7. Doing system backups, check server status and configure IPs and VLANs for training. Doing OS patching.

For Project Requirement Cat 1 clearace required

Role: CloudEngineer (GCC)

KeyResponsibilities:

• Manage the day-to-day operations of Government Cloud (GCC) Microsoft Azure infrastructure, ensuring stability, performance, and security.
• Lead the implementation of Azure cloud projects from planning and design through deployment and documentation.
• Work collaboratively with application, infrastructure, and network teams to support deployments, troubleshoot issues, and align on architectural decisions.
• Design, configure, and manage Azure Virtual Networks and Subnets, enabling secure and scalable cloud environments.
• Configure and maintain Network Security Groups (NSG) to enforce traffic control policies.
• Deploy, configure, and support Azure Load Balancers (LB) for high availability and optimal performance.
• Implement and manage Web Application Firewall (WAF) policies to protect web applications from threats and vulnerabilities.
• Configure and administer Azure DNS for name resolution and service discovery.
• Set up and maintain route tables and virtual network peerings to support hybrid, multi-region, and cross-subscription architectures.
• Integrate and manage syslog solutions and maintain the Azure Log Analytics Workspace for effective monitoring, diagnostics, and auditing.
• Oversee the procurement, management, and renewal of SSL certificates related to WAF and firewall infrastructure.
• Automate infrastructure provisioning and configuration using Terraform, adhering to Infrastructure-as-Code (IaC) standards.
• Ensure adherence to security best practices, compliance standards, and organizational policies.
• Participate in incident response and root cause analysis related to Azure infrastructure.
• Continuously assess the environment for performance improvements, cost optimizations, and new service adoption opportunities.
• Develop performance and operational reports.

RequiredQualifications:

• Certified in Microsoft Azure Administrator Associate (AZ-104) is mandatory.
• Certified in Cisco Certified Networking Associate (CCNA) will be a plus.
• Bachelors Degree or Diploma in Information Technology, Computing or equivalent
• 2–3 years of experience working with Azure infrastructure in GCC 1.0 and 2.0 environment.
• Proven hands-on experience with Terraform for Azure automation.
• Strong knowledge of Azure networking, security, and monitoring tools.
• Familiarity with logging analysis and monitoring via Azure Monitor and Log Analytics.
• Good understanding of ITIL processes, including Incident, Problem, Change, and Configuration Management.

Key Responsibilities

1. OS & Core Platform Management

• Commission and decommission compute and login nodes.
• Maintain golden images and ensure kernel version alignment and consistency.
• Apply OS hardening in accordance with authority-approved baselines.
• Execute staging-to-production patch cycles with proper validation and rollback plans.
• Detect and remediate configuration drift.
• Perform daily platform health checks and provide validation reports.

2. Virtualization & HCI Operations

• Manage VM lifecycle and maintain template hygiene.
• Execute scheduled monthly platform patching activities.
• Perform backup verification and representative restore testing.
• Participate in quarterly Disaster Recovery (DR) drills.
• Maintain inventory records, tagging standards, and configuration documentation.

3. Incident & Change Management

• Respond to incidents in accordance with SLA targets:
• P1: ≤ 30 minutes response time
• P2: ≤ 1 hour response time
• Implement approved changes with documented impact assessments and rollback plans.
• Perform post-incident Root Cause Analysis (RCA) and track corrective actions.
• Maintain ITSM evidence for all operational activities.

4. Security & Compliance

• Perform vulnerability remediation within defined timelines.
• Conduct key and certificate rotation activities.
• Execute account hygiene checks and periodic access reviews.
• Maintan audit-ready evidence packs and compliance documentation.

Environment / Platforms

• Red Hat Enterprise Linux(RHEL)
• SUSE Harvester
• HPE dHCI
• HPE Performance Cluster Manager (HPCM)
• CheckMK Monitoring System

Required Experience

• Minimum 5 years of experience in Linux system administration
• Experience in HPC environments or large-scale compute clusters preferred

Hands-on experience with:

• Red Hat Enterprise Linux (RHEL OS)
• VMware and/or SUSE Harvester
• Automation scripting (Shell / Python)
• Enterprise monitoring tools

Required Certifications

• ITIL Foundation (mandatory)
• Red Hat Certified SystemAdministrator (RHCSA) or equivalent or higher

Key Responsibilities

1. Parallel Filesystem Management

• Provision and manage project/home directory quotas
• Execute snapshot creation and restore operations
• Conduct data integrity scans and filesystem scrubbing
• Monitor capacity thresholds and watermark alerts
• Perform scheduled failover drills and validation exercises

• Capture and maintain integrity/performance baseline reports
• Apply OEM advisories and remedial actions per runbook

2. HSM / Data Management Operations

• Manage data tiering and archival policies
• Perform recall and restore validation tests
• Monitor media lifecycle and retention compliance
• Conduct integrity scans and namespace housekeeping
• Triage and resolve stuck recall operations
• Maintain recall/restore audit evidence

3. Capacity & Performance Management

• Produce monthly storage performance baselines
• Conduct I/O spot checks and performance analysis
• Monitor storage SLIs and utilisation trends
• Perform capacity forecasting and risk reporting
• Publish capacity and threshold reports to management

4. Compliance, Security & Audit Support

• Maintain data integrity logs and remediation records
• Compile audit-ready evidence packs
• Ensure vulnerability remediation for storage systems
• Coordinate OEM/vendor escalations and TAC cases
• Maintain configuration backups and change records

Environment / Platforms

• HPE ClusterStor 2000
• Lustre Parallel Filesystem
• HPE DMF (HSM)
• VAST Data Storage
• Large-scale HPC storage environment

Required Experience

• Minimum 5 years of recent experience managing Parallel Filesystems such as Lustre, GPFS or equivalent
• Hands-on experience in:
• Large-scale storage environments (Petabyte scale preferred)
• Backup and HSM workflows
• Storage capacity planning and forecasting
• Data integrity and performance monitoring
• OEM coordination and escalation handling

Key Responsibilities

• Interconnect & Fabric Operations
• Manage Slingshot fabric configuration
• Perform link remediation & congestion triage
• Maintain config backups & rollback plans
• Execute firmware updates within maintenance windows
• Perform QoS/ECN/PFC tuning per design

DC Switching

• VLAN and port configuration updates
• Monitor utilisation & congestion metrics
• Maintain optics & cable inventory hygiene

Incident Handling

• P1 restoration < 48 hrs (HPC)
• Engage OEM TAC for Level-3 escalation
• Provide documented post-change validation

Security Alignment

• Work with Security Engineer on segmentation
• Maintain firewall policy integrity
• Ensure least-privilege network access

Required Experience

• Minimum 5 years in network support/troubleshooting

Experience with:

1. High-speed data centre fabric

2. SDN

3. Firewall & VPN administration

4. HPC interconnect experience preferred

Required Certifications

• ITIL Foundation
• CCNA or equivalent (minimum)

Minimum 5 years in network support/troubleshooting

Experience with:

• High-speed data centre fabric
• SDN
• Firewall & VPN administrationHPC interconnect experience preferred

Required Certifications

• ITIL Foundation
• CCNA or equivalent (minimum)

Job Description Summary

We are looking for a senior‑level SharePoint specialist with deep expertise in SharePoint Server Subscription Edition (SP SE) architecture, installation, configuration, and enterprise‑scale deployment. This role is responsible for designing and leading the implementation of robust, secure, and high‑availability SharePoint SE environments, while guiding teams, establishing standards, and ensuring operational excellence.

Job Description

Key Responsibilities

Architect, lead, and execute end‑to‑end installation, configuration, and deployment of SharePoint Server Subscription Edition (SP SE) across on‑premises or hybrid infrastructures.

Define and implement SharePoint farm architecture, including topology design, capacity planning, service application strategy, and high‑availability configurations.

Oversee and optimize SQL Server architecture supporting SharePoint SE, including Always On, performance tuning, and DR strategies.

Lead configuration of authentication models (NTLM, Kerberos, ADFS, Azure AD, hybrid identity) and ensure compliance with security and governance standards.

Own the setup and optimization of Search Service, User Profile Service, Managed Metadata, and other core service applications.

Establish and maintain governance frameworks, operational standards, and best practices for SharePoint SE environments.

Direct patching, cumulative updates, and upgrade cycles, ensuring minimal downtime and adherence to change‑management processes.

Develop advanced PowerShell automation for provisioning, monitoring, and maintenance.

Provide technical leadership to Infrastructure, Network, and Security teams, ensuring alignment across all layers of the platform.

Troubleshoot complex, multi‑layered SharePoint issues and lead root‑cause analysis for high‑impact incidents.

Produce and maintain architectural documentation, runbooks, topology diagrams, and operational guidelines.

Evaluate and integrate hybrid capabilities with Microsoft 365, including hybrid search and cloud‑connected features.

Mentor junior engineers and guide cross‑functional teams on SharePoint SE best practices.

Required Skills & Experience

7–10+ years of hands‑on experience with SharePoint Server (2016/2019/SE) in enterprise environments.

Proven expertise architecting and deploying SharePoint SE farms at scale.

Strong command of Windows Server, Active Directory, DNS, IIS, SQL Server, and enterprise networking concepts.

Advanced proficiency in PowerShell for automation and administration.

Deep understanding of SharePoint security, authentication, permissions, and governance.

Experience designing and implementing high‑availability, DR, and backup/restore strategies.

Ability to troubleshoot complex issues across application, infrastructure, and network layers.

Experience collaborating with senior stakeholders and influencing technical decisions.

Preferred Qualifications

Microsoft certifications in SharePoint, Azure, or related infrastructure technologies.

Experience with hybrid SharePoint–Microsoft 365 architectures.

Familiarity with workflow and automation platforms (Power Automate, Nintex).

Experience with enterprise migration tools (ShareGate, Metalogix, Quest).

Soft Skills

Strong leadership and communication skills, with the ability to influence and guide cross‑functional teams.

Ability to translate business requirements into scalable technical solutions.

Excellent analytical and problem‑solving abilities.

Comfortable owning complex initiatives end‑to‑end.

Key Responsibilities

• Deliver technical solutions to clients and take responsibility for the standards of work, project sign-off, and client satisfaction.

• Provide client support, assisting with troubleshooting, design, configuration, and escalated problem management.

• Act as key project team members charged with the analysis of client and technical requirements, specifications development, solution design and development, and in some environments may consult on testing and deployment processes.

• Expected to be technology leads for specific technologies and to use their deep knowledge of these technologies to propose enhancements.

Education

• Degree in Computer Engineering, Computer Science, Information Technology, or related field.

• CCIE, CCSM, PCNSC, or other relevant certifications.

Requirements

• At least 7–10 years of professional technical experience related to software development, systems design and deployment, or networking and infrastructure within a large-scale (preferably multinational) technology services environment.

• Experience in designing and building complex LAN and large WAN environments.

• Expertise in routing and switching technologies, including BGP, OSPF, EVPN, etc.

• Expertise in designing and building complex data center networks with Software Defined Networking (SDN) solutions such as Cisco ACI, VMware NSX, or OpenFlow protocols.

• Experience in designing and building complex WAN with Software Defined WAN (SD-WAN) solutions such as Viptela, SilverPeak, and Riverbed.

• Experience in designing and building complex campus networks with Software Defined Access (SDA) solutions from Cisco or other SDA vendors.

• Experience in network automation via scripting (e.g., Python, Ruby) or tools (e.g., Ansible, Algosec, Chef).

• Experience in designing and building network security solutions (Checkpoint, Palo Alto, Fortigate, Cisco Firewall, IDS/IPS, VPN, SSL), and content networking (cache, load balancer, F5, ISE, etc.).

• Experience in project management methodologies.

Key Responsibilities:

• Design, deploy, configure, and maintain Red Hat OpenShift Container Platform (OCP 4.x)
• Install, upgrade, patch, and troubleshoot OpenShift clusters
• Manage and support Kubernetes container orchestration
• Monitor cluster performance, availability, and capacity
• Implement RBAC, SCC, network policies, and security hardening
• Support application deployment, scaling, and container lifecycle management
• Troubleshoot platform, node, and container issues
• Configure logging and monitoring tools (Prometheus, Grafana, ELK)
• Automate infrastructure using Ansible, Shell scripting, or Terraform
• Support CI/CD integration with OpenShift (Jenkins, Git, etc.)
• Work with cloud platforms such as AWS, Azure, or on-premises environments
• Provide L2/L3 production support

Required Skills:

• Minimum 3+ years of hands-on experience with OpenShift
• Strong knowledge of Kubernetes
• Experience with Docker / container technologies
• Strong Linux administration skills (RHEL)
• Experience in OpenShift installation and cluster management.
• Openshift certificate mandatory.

We are seeking Security Solution Engineers / Specialists to deploy, enhance, manage, maintain and optimize a range of enterprise security solutions.

This role involves a combination of solution deployment, enhancements and ongoing operational support, ensuring system stability, security effectiveness, and continuous improvement of the organization’s cybersecurity posture.

Key Responsibilities

• Deploy, configure, upgrade, manage, maintain and optimise the target security solutions

• Perform Day 2 operations, including:

• System administration

• Patching and upgrades

• Health checks and monitoring

• Incident and alert response

• Onboarding and offboarding 
• Integration with other external platforms

• Review, fine-tune, and optimize security policies to improve solution effectiveness and efficacy

• Troubleshoot and resolve system, performance, and integration issues

• Conduct security hardening and system optimization activities

• Support agent installation and updates across enterprise environments

• Collaborate with SOC, infrastructure, and application teams to strengthen overall security posture

Target Security Solutions (preferably two solutions and above)

• Elastic SIEM & SOAR

• CyberArk PAM

• Tenable Vulnerability Management

• WAAP (F5, Imperva)

• ServiceNow (Vulnerability Response, SecOps / USEM)

• DLP solutions (Trellix, Trend Micro, Proofpoint)

• CI/CD Security tools (Mend.io, Sonatype)

• Cloud Security (Prisma Cloud, AWS native security, Checkmarx)

• Email Security & Endpoint Security solutions

• Quantum Security

Requirements

• Minimum 3+ years of experience in the 2 or more of the target solutions

• Strong hands-on experience with:

• Ability to troubleshoot complex security and integration issues

• Strong communication and collaboration skills

Preferred Qualifications

• Product certifications of the target solutions

• Experience in enterprise-scale environments

• Exposure to multi-vendor security ecosystems

Additional Information

• Contract Duration: 12 Months

• On-call support required

• Work Location: Onsite (Singapore)