Technical Lead, Stack

Parallelwireless

Bangalore Hybrid permanent

Posted: August 29, 2025

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Quick Summary

Technical Lead, Stack is responsible for designing and implementing end-to-end solutions for 4G/5G network architecture, with a focus on 3GPP RAN and O-RAN specifications and functionality, and developing expertise in cellular radio products complying to 3GPP specification for E-UTRA (LTE) and NR.

Required Skills

Network Architecture 3GPP Specification O-RAN Specifications Cellular Radio Products Ethernet/TCP/IP/UDP RAN Protocols FAPI F1 Interface S1 Interface CU E1 Interface LTE/5G AS Protocol Layers Log Analysis

Job Description

What you need :

• Understanding of end-to-end solutions for 4G/5G network architecture.
• Familiar with 3GPP RAN and O-RAN specifications and functionality.
• Development experience on Cellular Radio products complying to 3GPP specification for E-UTRA (LTE) and NR
• Familiar with communication interfaces Ethernet / TCP/IP / UDP .
• Should have good knowledge on RAN protocol and interfaces:
o FAPI, F1 interface (DU to CU), S1 interface (BBU to EPC), and CU E1 interface.
o LTE/5G AS protocol layers - PHY, MAC, RLC, PDCP, RRC
• Excellent Log analysis and debugging skills.
• Must be strong in C/C++ Programming and Linux OS.
• Hands on experience on debugging in Linux environment with tools like GDB, QXDM, TM500, QCAT etc.
• Good to have experience of Git.

What you will do :
• Designing, development & Unit testing of 5G in Layer2(RLC/MAC/PDCP) & Layer3(RRC/RRM) modules

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