Job Description : Layer 1 (L1) Engineer (LTE/5G PHY)

Location : Bengaluru, India

Experience Range : 2 - 9 years

We are looking for a highly motivated and skilled Layer 1 (L1) Engineer to join our team in Bengaluru. The ideal candidate will possess a strong foundational understanding and hands-on experience in wireless communication technologies, particularly the Physical Layer of LTE (4G) and 5G networks. This role is critical for the design, development, optimization, and testing of our cutting-edge eNodeB/gNB (base station) solutions, with a strong focus on Cloud-Native architectures.

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).