Software Engineer - Networking Datapath (QoS/CoS/ Firewall/ACLs/Filters)

Designation-Software Engineer - Networking Datapath (QoS/CoS/ Firewall/ACLs/Filters)
Exp- 6-12 yrs
Location- Bangalore (Hybrid)
R&R:
Key Responsibilities
Design, develop, and optimize data-path software for silicon-based networking platforms, including Broadcom DNX and Marvell CN10XX.
Implement and enhance routing, tunneling, packet-processing, and Quality of Service (QoS) protocols.
Develop and debug networking components across Linux-based embedded systems and hardware platforms.
Optimize code for throughput, latency, CPU utilization, memory consumption, and overall system performance.
Work on Linux kernel internals, device drivers, multithreading, IPC, memory management, and network internals.
Implement and troubleshoot protocols across Ethernet, IP networking, security, Wi-Fi, and telecom stacks.
Collaborate with hardware, firmware, architecture, and system engineering teams to deliver integrated solutions.
Lead technical discussions, mentor engineers, and drive engineering deliverables across the development lifecycle.
Own the complete SDLC, from functional specifications and design to implementation, testing, integration, and production deployment.
Perform debugging, root-cause analysis, performance profiling, and resolution of complex system-level issues.
Required Technical Skills
1. Operating Systems & System Internals
Linux, Linux Kernel Internals, Linux Network Internals
DPDK, Android, and device drivers
Multithreading, memory management, process management, and IPC mechanisms
2. Networking & Protocols
VXLAN, VLAN/VNI, TCP/IP, UDP, IPv4/IPv6, ARP, ICMP, DHCP, and DNS
IPsec (ESP/AH), ISAKMP, and GRE tunneling
Ethernet and complex routing protocols
QoS implementation, including Wi-Fi 7 QoS (MSCS)
FCIP and Ruckus GRE tunneling
3. Telecom Protocol Stacks
TR-069 and TR-181
SS7 stack, including M3UA and SCCP
SIGTRAN, EDPL, and LTE OAM
4. Hardware & Silicon Platforms
Broadcom (BRCM) DNX architecture and chipsets
Marvell CN10XX
ARM and Intel x86 architectures
5. Programming & Development Tools
Strong C programming and Data Structures
GCC, Make, scripting, Git, SVN, CVS, Perforce, and ClearCase
XR_dev and NX-OS development environments
Jira
6. Debugging & Diagnostics
GDB, addr2line, Wireshark, and core dump analysis
System-level debugging, packet tracing, performance profiling, and root-cause analysis
Experience & Qualifications
Strong experience in data-path development, silicon-based networking, or embedded networking software.
Proven hands-on experience with networking protocols, packet processing, and performance optimization.
Experience working with Broadcom DNX architecture is highly desirable.
Demonstrated ability to lead engineering teams, drive technical decisions, and deliver complex software projects.
Experience managing the complete SDLC, from requirements and design through production deployment.
Core Skills:
Proficiency in C/C++ programming and debugging.
Hands-on experience with Unix/Linux systems (user-space processes, kernel, socket programming, IPC).
Strong analytical and problem-solving abilities.
Ability to work effectively in teams with strong interpersonal skills.
Good-to-Have Skills:
Knowledge of Internet Protocols (TCP/UDP, IPv4/IPv6).
Familiarity with Service Provider Technologies (Access, Aggregation, Metro, Mobile Backhaul).
Exposure to Networking Protocols (L2/L3, QoS/CoS, ACLs, Firewalls).
Experience with XGS/DNX families (Jericho, Jericho2) is a plus.

Work arrangement
Hybrid