Job Description:
About Organization
Our department is responsible for the development of various devices provided to our customers, including smartphones, mobile routers, and IoT devices.
As a Device Technology Lead, you will work closely with device vendors, chipset vendors, and OS vendors. Your primary responsibilities will include examining device technology roadmaps and defining/specifying device requirements, with a particular focus on connectivity/SIM technologies (e.g., Wi-Fi, Bluetooth, NFC, UWB, IoT communication protocols, GSMA).
Job Duties
Connectivity Technology Roadmap Formulation: Research and analyze the latest standard trends in Wi-Fi, Bluetooth, UWB, 5G, etc., and formulate a technology roadmap aligned with Rakuten's service strategy.
Protocol Implementation and Optimization: Responsible for protocol stack implementation, performance tuning, and power consumption optimization for various connectivity technologies.
Interoperability Verification: Lead compatibility testing between devices and chipsets from different vendors, and manage certification acquisition from standardization organizations (e.g., Wi-Fi Alliance, Bluetooth SIG).
Rakuten SIM Profile Creation and Verification: Responsible for creating and verifying the Rakuten SIM Profile.
Related Parties
Relevant Team in Network Division, Device Development, Cloud Platform, QA, Standardization Promotion etc.
Minimum Qualifications
・Practical experience (3+ years) with multiple wireless communication standards such as Wi-Fi a/b/g/n/ac/ax/be), Bluetooth (Classic/LE), NFC, UWB, etc.
・Deep understanding of network protocols including TCP/IP, UDP, HTTP/HTTPS, MQTT,SIM prfofile etc.
・Experience in protocol stack development or firmware development using C/C++, Python, etc.
・Experience in network development and debugging in Linux environments
・Language: English- Business level
Preferred Qualifications
・Development and implementation experience with latest communication standards such as 5G NR, LTE, Wi-Fi 6E/7, etc.
・Experience collaborating with chipset vendors (Qualcomm, MediaTek, Broadcom, etc.)
・Experience participating in standardization activities of Wi-Fi Alliance, Bluetooth SIG, 3GPP, etc.
・Basic knowledge of RF design and antenna design
・Development experience with IoT devices, smart home, connected cars, etc.
・Advanced skills in packet analysis using Wireshark, tcpdump, etc.
・Development experience with embedded Linux, RTOS (FreeRTOS, Zephyr, etc.)
・Knowledge about eSIM profile
Languages:
English (Overall - 3 - Advanced)-
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