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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: 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 .
Here's how to pick the right one and stand out in your application.
144.883Jobs
31.687IN
81%EN
That number is real. WorkMundi's database shows 144,883 open engineer roles across the world. India has the most with 31,687 jobs, followed by the United States with 30,084. If you just finished reading one job ad and felt paralyzed by choice, you're not alone—but this scale is actually an advantage. It means you can afford to be selective.
Start by geography and language. The majority of engineer ads—117,837 of them—have the job posting text written in English. Use that as one filter, but remember: the ad text language tells you nothing about whether the role actually requires you to speak English day-to-day. Read the job description carefully. Then check which countries have the volume you're targeting. Singapore, Poland, and Australia round out the top five after India and the US.
Next, learn who's hiring. Accenture has posted 2,801 engineer roles. andurilindustries, speechify, and jobgether are also actively recruiting. If you're applying to one of these names, research their hiring patterns and interview style before you apply. That homework pays off.
When you interview, expect the question every engineer hears: 'Tell me about a time you had to debug a problem that wasn't in your job description.' Have a specific story ready—not a general one. Name the tools, the deadline pressure, and what you learned. Hiring managers listen for whether you see problem-solving as part of the role itself, not a favour.