SIM/eSIM Engineer I — IoT Connectivity & Java Card

Cubic³; Madrid; Presencial; EUR 42.000 - 61.000; Jornada completa

Descripción de la vacante

Cubic³ is seeking a SIM Engineer Level I to join our SIM Engineering team in Madrid. You will deliver SIM/eSIM solutions, manage card logistics, and provide technical support to global customers, working with the latest eSIM and connectivity standards.

You will design profiles, develop Java Card applets, and create documentation while collaborating with mobile core networks, security, and device vendors. Office presence is required during probation with flexibility after.

Formación

• Bachelor’s degree in engineering, computer science, or a related discipline.
• 3+ years of telecoms technology, connectivity, or related sectors.
• Proven experience with SIM/eSIM technologies and protocols (APDU, ISO 7816).
• Knowledge of 3GPP, ETSI, and GSMA standards.
• Experience with Java, Java Card, or scripting languages.
• Familiarity with mobile network elements and smart card technologies.
• Strong analytical and problem‑solving skills; quality‑focused and self‑motivated.
• Effective written and verbal communication skills.

Responsabilidades

• Design, validate, and maintain electrical and logical profiles for SIM and eSIM products
• Develop and implement Java Card applets for SIM/eSIM services, ensuring compliance with 3GPP, ETSI, and GSMA standards
• Create and update technical documentation (e.g., applet specifications, test plans)
• Collaborate with cross‑functional teams spanning mobile core networks, security, and device vendors
• Support the development, testing, and integration of SIM‑based applications and tools
• Utilize smart card test and trace tools to ensure quality and performance
• Participate in technical reviews, troubleshooting, and team meetings

Conocimientos

SIM/eSIM tech

Java

Java Card

APDU

ISO 7816

3GPP/ETSI/GSMA

Scripting

Analytical skills

Communication

Educación

Bachelor’s degree in engineering

Herramientas

Git

Postman

Comprion

Descripción del empleo

Cubic³ is seeking a SIM Engineer Level I to join our SIM Engineering team in Madrid. You will deliver SIM/eSIM solutions, manage card logistics, and provide technical support to global customers, working with the latest eSIM and connectivity standards.

You will design profiles, develop Java Card applets, and create documentation while collaborating with mobile core networks, security, and device vendors. Office presence is required during probation with flexibility after.