System Administrator

Location: Singapore

Company description

Founded in 2011, Oasis Smart SIM is a France and Singapore-based company that simplifies eSIM adoption by telecom operators, service providers and OEMs by providing a range of infrastructure, platforms and GSMA certified eSIM services. Founded by professionals of the SIM card industry with the aim of driving the adoption of eSIM cards globally, Oasis Smart SIM is a member of the GSMA and TCA (Trusted Connectivity Alliance) and ranked by Counterpoint Research as the 6th Global eSIM Management Solution Provider in 2022.

Oasis Smart SIM is a subsidiary of Tata Communications Limited, a digital ecosystem enabler that powers today's growing digital economy.

Position overview

The System Administrator is responsible for managing the IT systems within Oasis Singapore organization. This includes defining and implementing the right IT processes, procedures and policies across the organization as well as for the operations of Oasis Subscription Manager solution.

The Service Administrator will demonstrate an in-depth knowledge of IT environments (Windows, Linux, VMware, HPE server, routers, firewalls) as well as technical and operations skills to deliver the best service level of IT services.

Key responsibilities

  • Design, install and configure internal and customer facing servers, network devices and firewalls.
  • Proactively manage and maintain server, Routers/switches and firewall systems
  • Administer and support core Microsoft, Linux, Docker, HPE, HSM and VMware technologies
  • Design and implement monitoring, configuration management and reporting functions for IT systems
  • Maintain inventory and asset configuration documentation
  • Maintain the configurations of operating systems, business applications (Subscription Manager), security tools, web-servers, email, PCs, local and wide area networking both hardware and software.
  • Plan for and respond to service outages and other IT or infrastructure problems
  • Develop scripts and light programming for systems-related projects
  • Responsible for the upkeep, configuration, and reliable operation of computer systems within Oasis and its Data Center deployments.
  • Responsible for maintaining the network environment as well as the health of the network and servers.
  • Assist Service Manager with day-to-day Subscription Manager service, operations, support and maintenance
  • Participate to Subscription Manager’s data preparation process in secured environment
  • Work with Service Manager to monitor service level and take actions to restore service in case of degradation
  • Identify operational issues and work on resolutions including environment issues, configuration issues, inventory related issues
  • Log faults and follow-up on resolution with Service Manager
  • Plan and schedule the testing and deployment of releases
  • Support Product team to document operational processes and support activities
  • Adhere and enforce strict security procedures in compliance with GSMA Security Accreditation Scheme (SAS) requirements (GSMA FS.17)


  • An in-depth knowledge of computer systems
  • Must demonstrate strong problem-solving capabilities
  • Needs to take ownership of problems and proactively resolves technical problems
  • Pay attention to details
  • Good communication skills, including capability to document technical processes clearly
  • Experience in working with cross-functional/cross-departmental and virtual teams
  • Enthusiast
  • Must work well as a part of a team

Experience and qualification

  • Education: Bachelor degree in Computer Science (or related area) preferred
  • Min 5 years of experience in IT system and network administration
  • You need to be able to work with the following domain:
    • Linux/UNIX/Ubuntu/Windows Srv : built and administration
    • DOCKER : built and administration
    • LAN/WAN/VPN/SSL : Switches/Routers/Firewalls administration
    • VMWare 6.X administration
    • Cloud AWS / AZURE
    • Cybersecurity
    • NFV


  • A state-of-the art technological environment, within a highly international working environment that allows you to work with clients and partners from around the globe.
  • A company that is experiencing high levels of growth and a subsidiary of a large group, providing employees opportunities to change positions and/or geographical locations (Singapore, India, Paris region etc.)
  • Public benefits related to food and health insurance (Ticket Restaurant for Job in France, Health Insurance)
  • Mix between home office and office working

Please submit your application to : This email address is being protected from spambots. You need JavaScript enabled to view it. and precise the job title and location

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