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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # IoT / Embedded Connectivity Engineer (TCU Development) - **Company:** Facomsa - **Location:** Lliçà de Vall, Spain - **Contract:** Permanent contract - **Skills:** 4G (Telecommunication), Mobile Broadband Modems, LTE (Telecommunication), Amazon Web Services, CAN Bus, Cloud Computing, Cyber Security, Computer Programming, Software Debugging, Digital Signature, Embedded Software, Firmware, Hardware Security Module, Hypertext Transfer Protocols (HTTP), Message Queuing Telemetry Transport (MQTT), TCP/IP, SSL Certificate Management, Transport Layer Security, PIC Microcontroller, Information Technology, Cybercrime, Hardware Acceleration, U-Boot, Aws Iot - **Published:** November 13, 2026 - **Apply:** https://www.jobleads.com/es/job/iot-embedded-connectivity-engineer-tcu-development--llica-de-vall--e9a93e13aa05c3733f96fef61b0d765ea ## About the Role * Education: Degree in Telecommunications Engineering, Computer Science, Electronics, or a related technical field. * Programming: Solid foundation in C for embedded systems / microcontrollers. * IoT Protocols & Security Basics: Basic understanding of IoT protocols (e.g., MQTT, TCP/IP, HTTP/REST) and fundamental cybersecurity concepts (TLS/SSL, symmetric/asymmetric encryption, digital signatures). * Automotive Networks: Familiarity with or understanding of CAN bus communication. * Mindset: Self-starter, quick learner, security-conscious, and passionate about solving complex engineering challenges. Nice-to-have Skills: * Experience with AWS IoT SDK / AWS IoT Core and device provisioning/certificates. * Experience or exposure to bootloader design, dual-bank memory architectures, and FOTA implementations. * Experience integrating cellular modems (AT commands, 4G/LTE Cat-M1/NB-IoT, or 5G). * Experience with Secure Elements, Hardware Security Modules (HSM), or crypto hardware acceleration. * Familiarity with automotive cybersecurity standards (ISO/SAE 21434:2021) and software update engineering (ISO 24089:2023). * Familiarity with hardware/bus debugging tools (CANoe, PCAN, Oscilloscopes, Logic Analyzers). Experience: * 2 to 3 years of experience in embedded systems or IoT development. * We understand that you cannot be a master of every standard or technology right away. If you have solid fundamentals and passion for IoT, cybersecurity, and connected mobility, you will learn and grow with us! ## Description Currently, Facomsa is expanding its R&D Connectivity department with 1 IoT Embedded Engineer. Our primary mission is to take two-wheeler and four-wheeler intelligence to the next level. You will be directly involved in the end-to-end development of our next-generation Telematics Control Unit (TCU), connecting vehicles to the cloud using 4G / 5G, secure IoT protocols (MQTT, AWS IoT Core), FOTA (Firmware Over-The-Air), and CAN bus. As connected vehicles require robust protection against cyber threats, you will also play a key role in developing secure-by-design firmware aligned with modern automotive cybersecurity and software update standards (ISO/SAE 21434 and ISO 24089). What you'll be doing: * Develop TCU firmware: Write, test, and maintain robust embedded software in C for automotive microcontrollers and connectivity modules. * Cloud & Telematics Integration: Implement cloud communication using MQTT and the AWS IoT SDK to stream real-time vehicle telemetry, alerts, and diagnostics. * In-Vehicle Networking: Integrate CAN bus communications to acquire data from vehicle ECUs, sensors, and instrument clusters. * Secure FOTA Updates (ISO 24089): Help design and implement reliable, fail-safe Firmware Over-The-Air (FOTA) update mechanisms compliant with ISO 24089:2023. * Embedded Cybersecurity (ISO/SAE 21434): Implement security features such as secure boot, TLS/crypto libraries, certificate management, and data encryption following ISO/SAE 21434:2021 guidelines. * Cellular Integration: Work with cellular modem modules (4G LTE, evaluating 5G modules). * Collaborative R&D: Collaborate closely with the Hardware, Software, and Validation teams to bring innovative connectivity solutions to market. Requirements: * Education: Degree in Telecommunications Engineering, Computer Science, Electronics, or a related technical field. * Programming: Solid foundation in C for embedded systems / microcontrollers. * IoT Protocols & Security Basics: Basic understanding of IoT protocols (e.g., MQTT, TCP/IP, HTTP/REST) and fundamental cybersecurity concepts (TLS/SSL, symmetric/asymmetric encryption, digital signatures). * Automotive Networks: Familiarity with or understanding of CAN bus communication. * Mindset: Self-starter, quick learner, security-conscious, and passionate about solving complex engineering challenges. Nice-to-have Skills: * Experience with AWS IoT SDK / AWS IoT Core and device provisioning/certificates. * Experience or exposure to bootloader design, dual-bank memory architectures, and FOTA implementations. * Experience integrating cellular modems (AT commands, 4G/LTE Cat-M1/NB-IoT, or 5G). * Experience with Secure Elements, Hardware Security Modules (HSM), or crypto hardware acceleration. * Familiarity with automotive cybersecurity standards (ISO/SAE 21434:2021) and software update engineering (ISO 24089:2023). * Familiarity with hardware/bus debugging tools (CANoe, PCAN, Oscilloscopes, Logic Analyzers). Experience: * 2 to 3 years of experience in embedded systems or IoT development. * We understand that you cannot be a master of every standard or technology right away. If you have solid fundamentals and passion for IoT, cybersecurity, and connected mobility, you will learn and grow with us! Conditions: * Schedule: 40 hours per week with a flexible working schedule