Senior / Principal Software Engineer – 4G/5G Layer 2 (MAC Scheduler) IRC301655

Description –

Requirements Job Description: Senior / Principal Software Engineer – 4G/5G Layer 2 (MAC Scheduler)

Key Skills

• L2/MAC Scheduler Development & Optimization

Lead the design, implementation, and optimization of advanced MAC scheduling algorithms to maximize throughput, minimize latency, and ensure quality of service (QoS).

Develop robust, scalable, and real-time L2 software modules for 4G eNB, 5G gNB, and Small Cell architectures.

Continuously profile and optimize scheduler performance to meet stringent timing requirements in dense network environments.

• End-to-End Systems Engineering & Integration

Collaborate with cross-functional teams to define software architecture and ensure seamless integration of L2 with L1 (Physical Layer) and L3 (RRC/PDCP/SDAP).

Analyze and master RRC message sequences to successfully manage connection establishment, mobility/handovers, and state transitions.

Contribute to system-level design reviews, providing expert insights into architectural bottlenecks and resource constraints.

• Advanced Debugging & Customer R&D Support

Act as the tier-3 engineering escalation point to analyze and resolve critical field, lab, and customer-reported issues.

Perform deep-dive Root Cause Analysis (RCA) and swiftly deliver high-quality code fixes.

Utilize advanced logging frameworks and specialized wireless test equipment to characterize system behavior under heavy load conditions.

Required Skills & Qualifications Technical Expertise

C/C++ Programming: Mastery of C/C++ with excellent coding, software design pattern application, and debugging skills.

Platform Software & OS: Strong expertise in Embedded Linux and RTOS environments. Deep understanding of multi-threading, concurrency control, synchronization primitives, and low-level memory management.

Protocol Stack Knowledge: Comprehensive understanding of 3GPP 4G LTE and 5G NR Layer 2 protocols (MAC, RLC, PDCP), with an absolute emphasis on the MAC Scheduler.

Debugging & Tooling

Log Analysis: Proven proficiency in parsing and analyzing complex system, console, and core logs.

Specialized Test Equipment: Hands-on experience using Viavi (or similar network testing/channel emulation equipment) for system characterization and wrap-around testing.

UE Log Diagnostics: Experience utilizing QCAT (Qualcomm Crash Analysis Tool) or equivalent UE log analysis tools to debug end-to-end connectivity and protocol issues.

Job responsibilities

Job Description: Senior / Principal Software Engineer – 4G/5G Layer 2 (MAC Scheduler)

Key Skills

• L2/MAC Scheduler Development & Optimization

Lead the design, implementation, and optimization of advanced MAC scheduling algorithms to maximize throughput, minimize latency, and ensure quality of service (QoS).

Develop robust, scalable, and real-time L2 software modules for 4G eNB, 5G gNB, and Small Cell architectures.

Continuously profile and optimize scheduler performance to meet stringent timing requirements in dense network environments.

• End-to-End Systems Engineering & Integration

Collaborate with cross-functional teams to define software architecture and ensure seamless integration of L2 with L1 (Physical Layer) and L3 (RRC/PDCP/SDAP).

Analyze and master RRC message sequences to successfully manage connection establishment, mobility/handovers, and state transitions.

Contribute to system-level design reviews, providing expert insights into architectural bottlenecks and resource constraints.

• Advanced Debugging & Customer R&D Support

Act as the tier-3 engineering escalation point to analyze and resolve critical field, lab, and customer-reported issues.

Perform deep-dive Root Cause Analysis (RCA) and swiftly deliver high-quality code fixes.

Utilize advanced logging frameworks and specialized wireless test equipment to characterize system behavior under heavy load conditions.

Required Skills & Qualifications Technical Expertise

C/C++ Programming: Mastery of C/C++ with excellent coding, software design pattern application, and debugging skills.

Platform Software & OS: Strong expertise in Embedded Linux and RTOS environments. Deep understanding of multi-threading, concurrency control, synchronization primitives, and low-level memory management.

Protocol Stack Knowledge:…