Lead Engineer

Radisys is a proven, global leader in open telecom solutions and services. Its disaggregated platforms and integration services leverage open standards and reference architectures with open software and hardware to enable service providers to accelerate digital transformation and innovation. Radisys delivers an end-to-end portfolio spanning digital endpoints, disaggregated open broadband and wireless access that support terrestrial, non-terrestrial, and edge environments., and digital engagement platforms

Location:Bangalore

• Strong understanding of LTE/NB-IoT and  5G NR architecture and protocol stack.


• Good knowledge of 3GPP standards (Rel-15/16/17/18).


• Hands-on experience in LTE Layer 2 (MAC/RLC/PDCP) development.


• Proficiency in C/C++ programming. Knowledge of multi-threading and concurrency.


• Strong debugging and problem-solving skills.


• Experience with tools like Wireshark, protocol analysers, log analysis tools.  


• Familiarity with hardware-based test tools such as TM500 or UE simulators and protocol analysers like QXDM, QCAT is a plus. 


• Proficiency in GIT, Jenkins (CI/CD), and JIRA for agile development.

Key Responsibilities:

• Design, develop, and maintain Layer 2 protocols (MAC, RLC, PDCP) features eDRX,PSM, Coverage Enhancement etc for LTE/NB-IoT.


• Work on scheduling algorithms, resource allocation, and QoS handling in MAC layer.


• Contribute to documentation, including design specs and test plans.


• Analyse and debug Layer 2 issues using logs, traces, and protocol analysers.


• Collaborate with Layer 1 and Layer 3 teams for end-to-end feature integration.


• Ensure compliance with 3GPP specifications for 4G


• Participate in system design, code reviews, and performance optimization.


• Work on throughput, latency, and reliability improvements in 4G


• Support field testing, interoperability testing, and customer issue resolution.