ppbThe Company /b /ppCubic³ 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. /ppWe 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. /ph3bThe Role /b /h3pWe are seeking an energetic, enthusiastic SIM Engineer II to join the expanding SIM Engineering team, supporting Cubic’s growing customer base and solutions portfolio. /ppThe SIM Engineering team delivers Cubic solutions in the SIM/eSIM Remote SIM Provisioning technology domain, executing state-of-the-art technology projects with global connectivity reach to the automotive, agriculture, and transport industries. We design, develop, and support connectivity solutions leveraging remote SIM provisioning platforms, managing a complex ecosystem of SIM/eSIM technologies, providing SIM/eSIM card logistics and fulfilment, and supporting a integral customer base. /ppYou will have the opportunity to work with emerging connectivity technologies including 5G, non-terrestrial networks, and the evolution of eSIM to the latest GSMA specifications. You should enjoy working proactively in a dynamic, highly flexible environment and bring a positive, open, and analytical mindset to the team. /ph3bResponsibilities /b /h3ulliSupport the design, validation,



and maintenance of electrical profiles for SIM and eSIM products /liliDesign and implement Java Card applets for SIM/eSIM services, working to 3GPP, ETSI, and GSMA standards /liliWrite and maintain technical documentation (e.g. applet specification, electrical profile specifications, APIs, test plans) /liliCollaborate with cross-functional teams (mobile core network, security, IoT device vendors, smart card (eUICC) vendors) /liliDevelop, test, and support SIM-based applications and tools supporting SIM applications and their integration within the SIM/eSIM ecosystem /liliContribute to peer review of electrical test data and reports, supporting the technical growth of team members /li /ulh3bWhat’s in it for You? /b /h3pThis is an excellent opportunity for a SIM Engineer II to gain hands‑on experience of the complete end‑to‑end process of SIM/eSIM ordering and provisioning, SIM/eSIM Over‑the‑Air (OTA) infrastructure and management, SIM Remote SIM Provisioning (RSP) solutions for M2M and IoT, SIM–device–network interaction, and more. You’ll work in a small team of experienced engineers at the cutting edge of M2M and IoT eSIM technologies, supporting technical teams across full end‑to‑end solutions and gaining exposure to diverse technical areas. /ph3bRequired Skills /b /h3ulliThird level qualification in a technology discipline such as Engineering, Computer Science, or similar /lili3–6 years’ experience working in a technology organisation, preferably telecoms technology, with up to 3 years’ experience in SIM/eSIM/OTA engineering RD /liliExperience with Remote SIM Provisioning technologies (GSMA SGP.02, GSMA SGP.22/SGP.32)



/liliGood knowledge of SIM/eSIM architecture and protocols (APDU, ISO 7816) /liliFamiliarity with 3GPP/ETSI standards relevant to SIMs (e.g., TS 31.102, TS 102.221) /liliExperience with smart card test trace tools (e.g., Comprion) /liliUnderstanding of secure coding practices and cryptographic protocols /liliProficiency with version control systems (e.g., Git) and development tools /liliKnowledge of SIM operating systems for secure elements (e.g., MULTOS, native SIM OS) /liliExperience working with MNOs or handset OEMs and familiarity with mobile network elements (HSS, OTA platforms, test SIMs) /liliExperience/knowledge of Postman API, Java, C#, SQL, scripting knowledge /liliExperience with monitoring and alerting tools (e.g., DataDog, Zabbix) /liliProactive and open-minded with analytical and problem‑solving skills /liliFast learner with curiosity and quality focus /liliAbility to work unsupervised and take responsibility for task completion /liliEffective communication skills /li /ulh3bDesirable Skills /b /h3ulliFamiliarity with Atlassian tools (Confluence, Jira) /liliExperience working in a Kanban model /liliDemonstrable problem‑solving ability and new perspectives on existing solutions /liliIndependent work ethic and willingness to contribute to process improvements /liliAbility to guide and mentor less experienced colleagues and lead small project teams /li /ulpNew 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. /ppbCubic³ is an equal opportunities employer and committed to fostering a diverse and inclusive workplace. /b /p /p #J-18808-Ljbffr

📌 SIM Engineer II (Madrid)
🏢 Cubic³
📍 Madrid