L1 Engineer - LTE/5G

Location :

Experience Range :

Responsibilities

• Design and Development : Architect, design, and implement high-performance Physical Layer (PHY) algorithms and modules for LTE (4G) TDD and 5G NR base station (eNodeB/gNB) software stacks.
• Standards Compliance : Analyze, interpret, and implement functionalities strictly adhering to 3GPP LTE and 5G standards.
• Signal Processing : Develop and optimize advanced digital signal processing (DSP) algorithms relevant to the PHY layer, such as synchronization, channel estimation, equalization, MIMO processing, and coding/decoding.
• Performance Optimization : Conduct extensive performance tuning and multi-core processor optimization of L1 algorithms to meet strict real-time and throughput requirements.
• Cloud-Native Integration : Actively participate in integrating L1 components within Cloud-Native architectures and technologies (e.g., containers, microservices, Kubernetes).
• Testing and Validation : Develop unit tests, integrate L1 with higher layers (L2/L3), and support system-level validation and field trials.
• Documentation : Create detailed design documents, test plans, and technical specifications.
• Collaboration : Work closely with cross-functional teams, including Systems Engineering, L2/L3 Software Development, and QA, to ensure seamless integration and high product quality.
  

Required Skills And Expertise

Mandatory Technical Skills :

• Wireless Standards : Mandatory expertise in LTE (4G) and 5G wireless communication systems, with in-depth knowledge of the Physical Layer (PHY) design and signal processing chain.
• eNodeB/gNB Focus : Demonstrable and relevant experience must be specifically on the Base Station (eNodeB/gNB) side of the protocol stack.
• LTE TDD : Strong understanding and hands-on experience with LTE TDD (Time Division Duplexing) operation, features, and implementation details.
• Programming Languages : Expert-level proficiency in C/C++ for developing high-performance, real-time wireless software.
• Simulation/Modeling : Proficient in using MATLAB or equivalent tools for L1 algorithm design, simulation, and verification.
• 3GPP Standards : Solid working knowledge of relevant 3GPP LTE and 5G standards and specifications.
  

Core Competencies

• Signal Processing : Deep understanding of fundamental digital communication and signal processing techniques (e.g., OFDM, channel coding, massive MIMO, beamforming).
• Optimization : Hands-on experience with multi-core optimization and parallel computing techniques to meet strict L1 latency and throughput demands.
• Cloud-Native Architectures : Demonstrable experience with or strong conceptual understanding of Cloud-Native architectures and associated enabling technologies (e.g., Docker, Kubernetes, microservices).
  

Qualifications

• Bachelor's or Master's degree in Electrical Engineering, Computer Science, or a related field.
• 2 to 9 years of relevant professional experience in L1 software development for wireless base stations (eNodeB/gNB/gNB-DU/CU).