SIM Engineering Team Lead

Department: Technology

Location: Madrid

Employment Type: FullTime

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

Cubic³ is seeking a seasoned SIM Engineering Team Lead to drive our SIM Engineering function and guide the delivery of innovative SIM and eSIM solutions. In this senior leadership role, you will be responsible for setting technical direction, overseeing project execution, and developing the professional capabilities of your team. You will play a pivotal part in the advancement of SIM/eSIM Remote SIM Provisioning technologies and ensure the efficient delivery of complex connectivity solutions to our global clients.

Responsibilities

• Lead, manage, and mentor a team of SIM Engineers, supporting both their technical and professional development

• Provide clear technical and strategic leadership for all SIM/eSIM projects and initiatives

• Oversee and review the design, development, validation, and maintenance of electrical and logical profiles for SIM and eSIM products

• Drive the implementation of Java Card applets for SIM/eSIM services, ensuring compliance with 3GPP, ETSI, and GSMA standards

• Approve and ensure the quality of technical documentation, including applet specifications and test plans

• Coordinate cross-functional efforts with teams such as mobile core networks, security, and device vendors

• Champion quality assurance in development, testing, deployment, and support of SIM/eSIM solutions

• Manage project timelines, resource allocation, and deliverables, ensuring successful project outcomes

• Promote a collaborative, learning-oriented culture within the team and across the organization

What’s in it for you

• Strategic leadership role impacting advanced SIM/eSIM, IoT, and next-generation connectivity technologies

• Opportunities for career progression in both technical and people leadership

• Influence organizational direction and technology innovation

• Work with and mentor a high-performing, collaborative team

Required Skills & Experience

• Bachelor’s or Master’s degree in engineering, computer science, or a related discipline

• 8+ years of relevant experience within telecoms or connectivity technologies, including substantial work with SIM/eSIM, APDU, and ISO 7816

• Demonstrated leadership experience—managing engineering or technical teams is essential

• Deep understanding of 3GPP, ETSI, and GSMA standards relating to SIM/eSIM

• Proven expertise in Java/Java Card or scripting language development for SIM technologies

• Excellent analytical, organizational, and problem-solving skills

• Exceptional communication and interpersonal skills

• Track record of managing multiple priorities, project timelines, and resource planning

Desirable

• Experience with Git, Postman, or smart card test tools (e.g., Comprion)

• Knowledge of Kanban/Agile methodologies

• Experience working in a global or cross-functional environment

Benefits

• 25 days annual leave + 2 company days

• Health Insurance

• Pension Contribution

• ESOP

• Tax Saver Scheme

• Bike to Work Scheme

• Sports and social activities

• Annual office outings

• Bits & Bobs days (quarterly half days for personal tasks)

• Continuous Learning and Development Opportunities

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

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.