4G LTE/NB IoT Layer-2 Developer

Location: Gurgaon

Skills

● Solid 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.

Work Location: In person

📌 NB layer IOT (India)
🏢 Infinity Crest Group
📍 India