Technical Support Consultant

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.

As part of our development, we are looking for a Technical Support consultant to support the deployment of our EOS Subscription Manager solution and its related applications.

Position overview

The main responsibility for this position is to provide technical support for SIM/eSIM profile configuration, data generation, testing and to make sure that SIM card requirements are successfully delivered, technically working and maintained throughout the life of Oasis related projects. The TS is also responsible for software customization of products, software development and programming as and when required.

Key responsibilities

As a Technical support consultant in Oasis, you report to the Technical Support Manager. Among other things you will:

  • Provide technical consultancy and support throughout the customer lifecycle for products and services including SIM/eSIM, OTA services.
  • Understand customer technical requirements and identify potential card/solution in relation with Oasis SIM/eSIM products
  • Write functional specifications and technical design for Javacard applications or SIM/eSIM card project with the customer
  • Configuration of SIM/eSIM electrical profile, preparation of test SIM cards, follow-up on testing activities with clients
  • Data Generation for SIM/eSIM personalization
  • Preparation of personalization script in coordination with SIM card production factory
  • Perform test and BAP card validation, both internal and external with customer
  • Test SIM Operating System qualification; software validation (unit tests, functional testing, system test, integration test)
  • Troubleshooting, first level of investigation, reproduction of issues found, root cause analysis
  • Support Quality team in the resolution of problems and coordinate response/communication to the customer

Skills recquired

  • Javacard, Smartcard UICC and eUICC application development and testing
  • OTA 03.48
  • Java Servlet Technologie/ JSP/ JSF
  • Java XML Parsing, Coding
  • Java based Web services
  • SQL, relational database and JDBC
  • Linux/Unix, Windows Platform

Your profile

  • You have a bachelor’s degree in computer science or similar
  • You have a Knowledge of GSM/UMTS/LTE environment (e.g. 3GPP standards, eSIM)
  • If you apply for the for position in Singapore, you are Singaporean, PR or under LOC
  • You have at least 2 years of experience in Telecom and SIM/eSIM/USIM card projects
  • The position is open to professionals with 2 to 3 years of experience in software development and technical support


  • 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, 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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