Software Engineer- C/C++ , Networking , Forwarding - 8 to 15 yrs | BLR

Overview

As a Software Engineer on the Mass-Scale Infrastructure Group Platform Forwarding team, design, code and optimize high-performance forwarding software for IOS-XR platforms and Silicon One Network Processing Units (NPUs). Act as a key technical contributor delivering complex Layer 2 and Layer 3 forwarding features for service provider networks.

What you'll do

• Design and develop specific forwarding features within the IOS-XR platform.
• Write high-performance, production-grade code for QoS, Mirroring, Slowpath, OAM, Layer 2 technologies including EVPN and VPLS, and Layer 3 technologies including SRv6, Segment Routing and MPLS.
• Implement data plane logic to optimize packet processing.
• Translate network protocol requirements into efficient NPU microcode and SDK interactions.
• Investigate and resolve complex software defects found during internal testing or customer deployments.
• Analyze logs, core dumps and packet traces to distinguish between NPU behavior and software logic issues.
• Profile and tune code to minimize latency and enhance throughput against service provider performance metrics.
• Use AI/LLM-based tools for code generation, unit test creation and static analysis.

What you'll need

• BS/MS in Computer Science, Electrical Engineering or a related field.
• 7-10 years of experience in embedded software development for networking products.
• Strong proficiency in C/C++ for high-performance embedded systems.
• Proficiency in Python for scripting and test automation.
• Familiarity with NPU-based data plane architectures, such as Broadcom DNX, Silicon One or ezChip.
• Understanding of pipelining, table management and packet processing flows.
• Strong understanding and implementation experience in QoS, Mirroring, OAM, Layer 2 technologies including EVPN and VPLS, or Layer 3 routing including SRv6, Segment Routing, MPLS and IPv4/IPv6.
• Implementation experience with TE-Tunnels, GRE tunnels, BFD, BGP Flowspec, ACLs or Slowpath forwarding mechanisms.
• Understanding of router deployments in Service Provider networks, including Core and Peering.
• Ability to debug issues at the component level, including hardware/software interactions and memory management.
• Experience with CI/CD pipelines, Git and code review processes.
• Willingness to adopt AI/LLM-based tools to enhance coding efficiency and automated testing.
• Strong programming skills in C/C++ and scripting in Python.
• Solid knowledge of carrier-grade networking operating systems and forwarding architectures.
• Experience debugging complex embedded software issues.
• Experience working on tools such as Clearcase, Valgrind, DDTS and GDB.

Nice to have

• Experience with IOS-XR or similar carrier-grade network operating systems.
• Knowledge of Internet protocols including TCP/UDP and IPv4/IPv6.
• Exposure to networking protocols including L2/L3, QoS and ACLs.
• Experience with BCM, Silicon One and ezChip NPU programming.
• Familiarity with AI/ML tools for software engineering, such as Copilot for code and AI for log analysis.

Details

• Location: Bangalore, India.