Senior Software Engineer

Responsibilities

• Experienced professional using best practices and knowledge of internal or external business issues to improve products or services. Works independently with minimal guidance
• Implement CMIS / SFF compliant management frameworks for pluggable optics
• Develop datapath and control-plane integration software for NPUs and ASICs, and contribute to software for co-packaged optics, silicon photonics, coherent DSP-based optics, and 800G / 1.6T systems
• Develop Linux-based embedded software and integrate optics / PHY functionality with distributed network operating systems
• Build telemetry, diagnostics, and fault-management infrastructure, develop automation and validation infrastructure in Python
• Lead medium-scope features from technical design through completion
• Contribute to a defined software engineering roadmap, identify and recommend improvements to the software development lifecycle and agile engineering best practices
• Write functional clean code and unit tests with no guidance. Maintain and enhance solutions by fixing complicated errors, raising risks, and escalating issues where necessary
• Shares knowledge across teams, both informally and formally (e.g., ad-hoc basis, internal presentations, blogs, newsletters)
• Coordinates across teams to estimate times and complete projects according to specification and user requirements
• Tracks milestones, progress and provides ongoing updates and remediation plans to cross-functional partners
• Mentors and assists other team members through code reviews, documentation and technical guidance

Requirements

• Bachelor's degree and 7+ years, Master's degree and 4+ years, or PhD and 1+ years of experience with a degree in CS, EE, or related field
• Experience in C/C++/Python, Data Structures and Algorithms
• Experience with embedded systems development and Linux OS programming experience
• Experience with Platform Infrastructure and Optics software Development
• Experience of 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
• Why Cisco?
• We are Cisco, and our power starts with you.
• Message to applicants applying to work in the U.S. and/or Canada:
• The starting salary range posted for this position is $165,000.00 to $241,400.00 and reflects the projected salary range for new hires in this position in U.S. and/or Canada locations, not including incentive compensation*, equity, or benefits.
• Individual pay is determined by the candidate's hiring location, market conditions, job-related skillset, experience, qualifications, education, certifications, and/or training. The fu

Benefits

Additional Information

The application window is expected to close on: 06/29/2026 Job posting may be removed earlier if the position is filled or if a sufficient number of applications are received . ***We are looking for candidates local to Milpitas as this is a hybrid role requiring at least 3 days in the office each week*** Meet the Team Develop software consistent with Cisco 'Design Thinking Principles' with a focus on simplification and customer experience at its core, using secure coding practices following software development best practices. Partners with cross-functional teams to create the right solution for our customers. Creates technical design documentation for the team as well as contributing to user documentation for end users. Debugs and addresses software issues during development and in production systems to support customers. Brings new ideas for product innovation and helps improve software development processes. You will join our 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.

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