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# Sr Software Engineer--Routing Platform & Infrastructure

- **Company:** Cisco Systems, Inc.
- **Location:** Milpitas, CA, United States
- **Experience:** Expert
- **Salary:** $167,700.0 - $245,200.0
- **Contract:** Permanent contract
- **Skills:** Artificial Intelligence, C++ (Programming Language), Network Operating System (NOS), Content Management Interoperability Services, Software Documentation, Code Review, Data Structures, Linux, Linux on Embedded Systems, Python (Programming Language), Routing, Software Engineering, User-Centered Design, AI Infrastructure, Computer Networking Systems, Application Specific Integrated Circuits, Reliability of Systems
- **Published:** September 2, 2026
- **Apply:** https://diversityjobs.com/main/sendform/8/8/28176/1/18190221?backUrl=%2Fcareer%2F18190221%2FSr-Software-Engineer-Routing-Platform-Infrastructure-California-Milpitas

## About the Role

Bachelor's degree and 6+ years, Master's degree and 4+ years, or PhD and 1+ years of experience with a degree in CS, EE, or related field; this experience must include:

 * C/C++/Python, Data Structures and Algorithms
 * Embedded systems development and Linux OS programming experience
 * Platform Infrastructure or Optics software development

Preferred Qualifications:

 * Experience with coherent optics (ZR/ZR+), PHY / SerDes, FEC, ASIC / NPU, and DSP-based systems
 * Familiarity with CMIS and / or SFF standards
 * Experience with IOS-XR, SONiC, FBOSS, or similar NOS platforms
 * Experience with AI networking infrastructure
 * Knowledge of optical line systems and coherent transport technologies

## Description

You will join this next-generation networking and AI infrastructure team, contributing to the design and development of scalable software systems for high-speed networking platforms, coherent optical transceivers, PHY devices, and next-generation NPU-based systems. You will work at the intersection of optics and its standards, silicon photonics, ASIC/NPU datapath, Linux embedded software and distributed network operating systems.

Your Impact:

 * Own the lifecycle of management frameworks that ensure seamless, standardized interoperability between our hardware and the complex pluggable optics ecosystem.
 * Bridge the gap between hardware and software by driving the integration of control-plane and datapath logic, ensuring our NPU and ASIC designs deliver peak performance in next-generation high-speed environments.
 * Architect robust, Linux-based embedded solutions that enable deep integration of hardware optics and PHY layers
 * Champion system reliability by designing the diagnostic and telemetry infrastructure that keeps our networks observable and autonomous.
 * Lead the end-to-end design of medium-scope features, acting as a technical steward for our software roadmap and influencing the adoption of modern, agile engineering best practices.
 * Elevate the team through technical mentorship with knowledge sharing, meticulous code reviews, and the creation of comprehensive user documentation.