Total 41 job vacancies by Opensource Pte. Ltd.

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)

HPC Storage Engineer / Storage Administrator

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)

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.

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.

Responsibilities

• Deploy and manage Red Hat OpenShift clusters

• Administer Kubernetes and container platforms

• Perform installation, upgrades, and troubleshooting

• Support CI/CD integration and automation

• Monitor and maintain platform performance

Requirements

• 5+ years experience in OpenShift and Kubernetes

• Strong Linux (RHEL) administration

• Experience with Docker / containers

• Knowledge of CI/CD tools (Jenkins, GitLab
  Openshiftcertificate mandatory.

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.

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.

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)

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)