Junior .NET/C++ Software Developer – SIM & eSIM Solutions

About the role

We are looking for a motivated Junior Software Developer specialized in .NET and C++ to work on SIM and eSIM solutions within our Operations team in Madrid. The role involves developing and maintaining testing and personalization tools that support manufacturing processes for secure connectivity.

Key responsibilities

• Develop and maintain software tools used for SIM and eSIM testing in manufacturing environments.
• Create personalization solutions for SIM and eSIM products based on business and customer requirements.
• Implement new functionalities and enhancements received from Customer Service and the SPD Manager.
• Support and coordinate development activities related to personalization processes in factory settings.
• Collaborate with Technical and R&D teams to qualify and validate SIM and eSIM products.
• Analyse, troubleshoot, and resolve issues in software developments and production environments.
• Contribute to continuous improvement of development processes, tools, and documentation.

Required profile

• Bachelor’s degree in Computer Science, Computer Engineering, Telecommunications Engineering or a related field.
• At least 1 year of experience in software development or programming.
• Professional working proficiency in English (minimum B1 level).
• Willingness to travel occasionally (approximately 20%).

Required skills

• Microsoft .NET technologies (VB.NET and/or C#).
• C++ programming.
• Experience with relational databases such as MySQL, SQL Server or Oracle.