5G NR vRAN Layer 3 RRC Developer

Wipro Ltd.; Bengaluru; Hybrid; INR 1,500,000 - 2,200,000; Full time

Job summary

Wipro is seeking a Software Development Engineer with deep expertise in 5G NR and LTE Layer 3 RRC protocol stacks for vRAN solutions in Bengaluru. You will design, implement, test, and debug RRC control-plane features for high-performance Linux-based systems.

You will work on connection setup/reconfiguration/release, mobility, measurements, and interoperation with PDCP, RLC, MAC/Scheduler, and OAM/SON/RIC. Strong C/C++ and 3GPP knowledge are essential.

Qualifications

• Strong knowledge of 3GPP RRC specifications and mobility procedures.
• Hands-on development in LTE eNodeB and/or 5G gNodeB Layer 3 RRC.
• Experience with Linux and debugging tools (Wireshark, GDB).

Responsibilities

• Design and develop 5G NR/LTE Layer 3 RRC features.
• Implement control-plane procedures for RRC connections and handovers.
• Integrate RRC with PDCP/RLC/MAC, and OAM/SON/RIC components.
• Conduct unit tests, debugging, and root-cause analysis.
• Support system integration and field issue resolution.

Skills

C/C++

Linux

Multithreading

Data structures

3GPP RRC / LTE

Wireshark

Git

vRAN / O-RAN

Docker/Kubernetes

Education

Bachelor's/Master's in Computer Science

Tools

Wireshark

Git

Protocol debugging

Job description

Job Description: 5G NR / LTE vRAN Software Development Engineer Layer 3 (RRC)

Experience: 36 years

Education: Bachelors/Master’s in Computer Science,

Looking for a Software Development Engineer with strong experience in 4G LTE / 5G NR Layer 3 (RRC) protocol stack development for vRAN solutions. The role involves design, development, testing, debugging, and integration of RRC control-plane features.

Key Responsibilities

• Design and develop 5G NR / LTE Layer 3 RRC features and control-plane procedures.
• Work on RRC connection setup/reconfiguration/release, mobility, handovers, measurements, Carrier Aggregation and Dual Connectivity.
• Develop high-performance software using C/C++ on Linux.
• Work with 3GPP protocols and interfaces such as F1AP, E1AP, NGAP, XnAP and X2AP.
• Integrate RRC with PDCP, RLC, MAC/Scheduler, OAM/SON/RIC components.
• Perform unit/component testing, debugging and root-cause analysis using GDB, Valgrind and Wireshark.
• Support system integration, interoperability testing and field issue resolution.

Mandatory Skills

• Strong C/C++, Linux, multithreading and data structures.
• Hands-on commercial development experience in LTE eNodeB and/or 5G gNodeB Layer 3 RRC.
• Strong understanding of 3GPP RRC specifications, call flows, state machines and mobility procedures.
• Knowledge of CU-CP/CU-UP/DU architecture and F1AP/E1AP/NGAP/XnAP/X2AP interfaces.
• Experience with Wireshark, Git and protocol debugging.
• Exposure to vRAN, Docker, Kubernetes, O-RAN/RIC is an advantage.

Key screening skills: C/C++ + LTE/5G RRC Layer 3 + eNodeB/gNodeB + 3GPP + Linux