Software Engineer | C or C++, Packet/Slow Path , L2& L3 Protocols | Bangalore | 7 + to 10 years
Cisco24 hours ago
Bengaluru, IndiaSenior / Staff+
Responsibilities
- Design and develop forwarding features within the IOS-XR platform.
- Write high-performance C/C++ software for QoS, mirroring, Slowpath, OAM, EVPN, VPLS, SRv6, Segment Routing, and MPLS technologies.
- Implement NPU data-plane logic and translate network protocol requirements into NPU microcode and SDK interactions.
- Debug software defects using logs, core dumps, packet traces, and hardware/software interaction analysis.
- Profile and tune code to reduce latency and maximize throughput against service-provider performance requirements.
- Use AI/LLM-based tools for code generation, unit-test creation, static analysis, and debugging.
Requirements
- 7–10 years of experience in embedded software development for networking products.
- Strong C/C++ programming skills and Python scripting or test-automation experience.
- Knowledge of carrier-grade networking operating systems and forwarding architectures.
- Experience debugging complex embedded software issues, including memory-management and hardware/software interaction problems.
- Working knowledge of NPU-based data-plane architectures, pipelining, table management, and packet-processing flows.
- Implementation experience with Layer 2 and Layer 3 forwarding protocols, including EVPN, VPLS, SRv6, Segment Routing, MPLS, IPv4/IPv6, QoS, mirroring, and OAM.
- Experience or knowledge of TE tunnels, GRE tunnels, BFD, BGP Flowspec, ACLs, and Slowpath forwarding mechanisms.
- Understanding of router deployments in service-provider core and peering networks.
- Experience with ClearCase, Valgrind, DDTS, GDB, or similar tools.
- Preferred: experience with IOS-XR or similar carrier-grade network operating systems and NPU programming using BCM, Silicon One, or ezChip.
- Preferred: knowledge of TCP/UDP, IPv4/IPv6, L2/L3 networking, QoS, ACLs, and AI/ML tools such as Copilot for code or AI log analysis.
About Cisco
Cisco designs and sells networking, security, and collaboration platforms for enterprises, service providers, and governments, spanning routers and switches, Wi‑Fi, firewalls, zero‑trust, observability, and cloud-managed IT (Meraki) plus Webex. Its business model mixes hardware, software subscriptions, and support/consulting services. Founded in 1984 and headquartered in San Jose, California, Cisco is a public company traded on Nasdaq and serves customers across data centers, campuses, and service provider networks.