L3 Engineer

3 days ago

Bengaluru, India MaimsD Technology Full time

Description : Job Description : Layer 3 (L3) Engineer (LTE/5G Protocol Stack)Location : Bengaluru, IndiaExperience Range : 2 - 9 yearsWe're hiring an experienced and results-oriented Layer 3 (L3) Engineer to join our team in Bengaluru. This critical role involves the design, development, and optimization of the control and user plane protocols for our cutting-edge base station (eNodeB/gNB) solutions in LTE (4G) and 5G networks, with a strong focus on Cloud-Native deployment and high-performance packet processing.Responsibilities :- Protocol Development : Design, implement, and maintain core 4G and 5G protocols including RRC (Radio Resource Control) and control plane aspects of PDCP within the eNodeB/gNB software.- Signaling Interface Implementation : Develop and integrate inter-eNB/gNB and core network signaling interfaces such as S1AP and X2AP (or their 5G equivalents).- User Plane Development : Implement and optimize user plane protocols like GTP-U (GPRS Tunneling Protocol User Plane) for efficient data handling.- Self-Organizing Networks (SON) : Implement and validate SON (Self-Organizing Network) features (e.g., ANR, MLB) to enhance network automation and efficiency.- High-Performance Networking : Utilize and integrate fast packet processing frameworks like DPDK (Data Plane Development Kit) or VPP (Vector Packet Processing) to achieve ultra-low latency and high throughput for the user plane.- Cloud-Native Integration : Deploy and manage L3 applications using containerization technologies such as Docker and orchestration platforms like Kubernetes in a Linux environment.- Debugging & Testing : Troubleshoot complex system and protocol issues, perform log analysis, and ensure the stability and conformance of the protocol stack with 3GPP standards.Required Skills and Expertise :Mandatory Technical Skills :- Wireless Standards : Mandatory expertise in LTE (4G) and 5G systems, with a deep understanding of the Control Plane and User Plane protocols.- eNodeB/gNB Focus : Demonstrable and relevant experience must be specifically on the Base Station (eNodeB/gNB) side of the protocol stack.Key 4G/5G Protocols : In-depth, hands-on development experience with :1. RRC (Radio Resource Control)2. PDCP control plane3. S1AP and X2AP4. GTP-U (User Plane)- Programming Languages : Expert proficiency in C/C++ for developing high-performance, real-time networking and control plane software.- Operating Systems : Solid experience with development and debugging on Linux operating systems.Core Competencies :- Cloud-Native : Practical experience with Kubernetes and Docker for deploying, scaling, and managing microservices-based telecom functions.- High-Speed Processing : Hands-on experience or strong conceptual knowledge of accelerated data plane technologies like DPDK or VPP.- SON : Working knowledge of SON principles and implementation.- 3GPP Standards : Strong command of relevant 3GPP LTE and 5G standards for Layer 3 protocols.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 L3 software development for wireless base stations (eNodeB/gNB/gNB-DU/CU). (ref:hirist.tech)

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