Senior Firmware Engineer Protocol


Rolling Wireless is an international company with 20+ years of experience in developing cellular modems and software for automotive market. We are worldwide the largest 2nd Tier supplier of cellular modems to the automotive industry.

Working at Rolling Wireless is joining a multicultural team at a high-growth organization.

We're excited to expand our presence in Budapest as we take the next step in building a stronger, more versatile R&D team. What started as a software development hub is now evolving into a full development center and we're looking for passionate professionals to join us on this journey.

If you're ready to be part of a dynamic, international environment where your ideas matter and innovation drives everything we do, submit your application today!


Position / Assignment Purpose


As a key member of the New Product Development Team, this role is responsible for debugging and troubleshooting modem protocol issues related to carrier, regulatory, and customer approvals. The incumbent will contribute to the development of high-quality modem firmware, ensuring compliance with carrier and customer requirements while supporting certification processes.

    

Key Accountabilities / Statement of Work


The incumbent will play a crucial role in modem firmware development, ensuring compliance with carrier, regulatory, and customer requirements. This position involves designing, implementing, and debugging modem protocol features (4G/5G, eCall, GNSS), supporting modem certification processes, and collaborating with cross-functional teams to deliver high-quality firmware.

  • Modem Protocol Development – Design and implement high-quality protocol functions for 4G/5G (3GPP), eCall, and GNSS
  • Coding & Code Quality – Adhere to Rolling Wireless coding standards and ensure high-quality software deliverables, design comprehensive unit and functional test cases for protocol-related features and ensure successful integration testing
  • Code Review & Collaboration – Participate in code reviews, providing valuable insights and feedback in areas of expertise
  • Certification Support & Debugging & Troubleshooting - Assist with modem regulatory and MNO certification processes. Utilize GDB, KDB, QXDM, QPST, and other debugging tools to analyze and resolve protocol feature issues
  • Customer Support – Troubleshoot and resolve critical technical issues for customers


Required Experience


  • Bachelor's degree in Computer Science, Electrical Engineering, Telecommunications, or a related field (mandatory)
  • Minimum 5 years of experience in the wireless communication domain
  • Programming Skills – Strong proficiency in C programming
  • Embedded Systems Knowledge – Hands-on experience in embedded software development, debugging methods, and tools
  • Wireless Protocol Expertise – In-depth understanding of LTE, 5G, GNSS (GPS, GLONASS, Galileo, BeiDou)
  • Problem-Solving & Communication – A proactive and quick learner with strong analytical skills and excellent verbal and written communication in English
  • Teamwork & Independence – Ability to work both independently and collaboratively in a fast-paced environment


Required Skills and Competencies


  • Experience in innovating and prototyping new embedded technologies
  • Demonstrated ability to take ownership of tasks and drive them to completion
  • Telematics & Network Access Devices – Experience in Telematics and Network Access Device (NAD) development is an advantage
  • Platform-Specific Experience – Experience with Qualcomm platforms is preferred


Location
Budapest
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