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

Description

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Requirements

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

Key Skills
1. 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.
2. 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.
3. 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
1. 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.
2. 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.
3. 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.

 

What we offer

Exciting Projects: We focus on industries like High-Tech, communication, media, healthcare, retail and telecom. Our customer list is full of fantastic global brands and leaders who love what we build for them.

Collaborative Environment: You Can expand your skills by collaborating with a diverse team of highly talented people in an open, laidback environment — or even abroad in one of our global centers or client facilities!

Work-Life Balance: GlobalLogic prioritizes work-life balance, which is why we offer flexible work schedules, opportunities to work from home, and paid time off and holidays.

Professional Development: Our dedicated Learning & Development team regularly organizes Communication skills training(GL Vantage, Toast Master),Stress Management program, professional certifications, and technical and soft skill trainings.

Excellent Benefits: We provide our employees with competitive salaries, family medical insurance, Group Term Life Insurance, Group Personal Accident Insurance , NPS(National Pension Scheme ), Periodic health awareness program, extended maternity leave, annual performance bonuses, and referral bonuses.

Fun Perks: We want you to love where you work, which is why we host sports events, cultural activities, offer food on subsidies rates, Corporate parties. Our vibrant offices also include dedicated GL Zones, rooftop decks and GL Club where you can drink coffee or tea with your colleagues over a game of table and offer discounts for popular stores and restaurants!

About GlobalLogic

GlobalLogic, a Hitachi Group Company, is a trusted digital engineering partner to the world’s largest and most forward-thinking companies. Since 2000, we’ve been at the forefront of the digital revolution – helping create some of the most innovative and widely used digital products and experiences. Today we continue to collaborate with clients in transforming businesses and redefining industries through intelligent products, platforms, and services.