SIM Engineer I

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

The Company

Cubic³ provides advanced software-defined vehicle solutions to over 200 countries around the world. Our powerfully smart connectivity enables leading automotive, agriculture, and transportation OEMs to deliver innovative new services and fully compliant in-vehicle experiences that customers desire, regardless of local market requirements.

The Company

Cubic³ provides advanced software-defined vehicle solutions to over 200 countries around the world. Our powerfully smart connectivity enables leading automotive, agriculture, and transportation OEMs to deliver innovative new services and fully compliant in-vehicle experiences that customers desire, regardless of local market requirements.

We believe in leadership that supports empowerment and responsibility, while recognising and developing leadership qualities across Our Team. Together we bring out the best in each other. So, whether you’re interested in joining us as an individual contributor, manager, senior leader – or someone who aspires to growing into a leadership role – we look for people who are results focused, empathetic, visionary, empowering, and who ‘champion’ our cultures and values.

The Role

We are looking for a SIM Engineer Level I with hands-on experience in SIM and eSIM technologies. You will join a dynamic SIM Engineering team and play a key role in delivering Cubic³ solutions within the evolving SIM/eSIM Remote SIM Provisioning technology domain.

The SIM Engineer Level I will contribute to building advanced connectivity solutions, managing SIM/eSIM card logistics and fulfilment, and providing technical support to our global customers. You will work directly with the latest developments in eSIM and emerging connectivity standards.

Responsibilities

• 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

What’s in it for you

• Involvement in end‑to‑end SIM/eSIM ordering and provisioning processes
• Opportunities to work with advanced IoT and connectivity technologies
• Professional growth and skills development in a collaborative environment
• The ability to drive ideas and technical initiatives within a highly skilled team

Required Skills & Experience

• Bachelor’s degree in engineering, computer science, or a related discipline
• 3+ years of relevant experience in 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

Desirable

• Experience with Git, Postman, or smart card test tools (e.g., Comprion)
• Exposure to Kanban/Agile methodologies

New hires at Cubic³ are required to work onsite five days a week during their six‑month probation period to get to know the company, their team, and our ways of working. After probation, we offer a flexible arrangement of up to eight work‑from‑home days per month, provided it aligns with business needs and performance standards. This arrangement is not a given for all roles.

Cubic³ is an equal opportunities employer and committed to fostering a diverse and inclusive workplace.