We are looking for a talented and experienced User Equipment (UE) L2/L3 Developer to join our dynamic team at US20 - Nokia of America Corp. In this role, you will play a crucial part in developing and enhancing UE protocol stack software, ensuring compliance with 3GPP standards. Your expertise will contribute to the seamless integration of L2/L3 protocols with other layers, optimizing performance and power efficiency. Design, develop, and optimize UE L2/L3 protocol stack software, including MAC, RLC, PDCP, RRC, and NAS. Implement 3GPP-specified features and enhancements for LTE and 5G NR. Analyze and debug L2/L3 layer issues using protocol analyzers and logs. Optimize protocol performance and throughput under various network conditions. Collaborate closely with PHY, L1, and higher-layer teams for seamless integration. Conduct functional and performance testing of L2/L3 protocols using UE simulators and network emulators. Stay updated with the latest 3GPP releases and integrate relevant changes. Ensure compliance with industry and operator requirements through cross-functional collaboration. Provide technical expertise and support to other team members as needed. Bachelor's or Master's degree in Computer Science, Electrical Engineering, Telecommunications, or a related field. 3 years of experience in developing and optimizing Layer 2 and Layer 3 protocols for 4G/5G UE. Strong programming skills in C/C++ for real-time and embedded systems. In-depth knowledge of 3GPP 4G/5G UE protocols, specifically L2 (MAC/RLC/PDCP) and L3 (RRC/NAS). Experience with debugging tools like Wireshark, QXDM, and UE log analyzers. Familiarity with RTOS/Linux-based development and multi-threaded programming. Preferred: Knowledge of 5G SA/NSA network architectures and PHY-MAC interactions. Excellent problem-solving and analytical skills. Effective communication and teamwork abilities. Ability to work independently and manage tasks efficiently.