Software Engineer

The application window is expected to close on: 04/02/2026 Job posting may be removed earlier if the position is filled or if a sufficient number of applications are received. Meet the team We are seeking an experienced and motivated Software Engineer to join our Service Provider High End Router (Cisco 8000) team within the R&D department, contributing to the evolution of next-generation networking products! In this role, you’ll develop and optimize firmware, SDKs, simulators, and compilers for Cisco Silicon One™ architecture, with a strong focus on using the power of P4 (Programming Protocol-Independent Packet Processors). This is a phenomenal opportunity to work with pioneering technology that’s shaping the future of networking! You’ll be part of a diverse team dedicated to delivering innovative, high-quality solutions on Cisco 8000, featuring the latest Silicon One ASICs. You will play a key role in developing the SDK and/or control plane for networking protocols, collaborating with talented colleagues to drive industry-leading advancements. Join us and be a part of something outstanding! Your impact As a Software Engineer, you will design and develop a broad set of advanced networking features. With the foundational capabilities of our next‑generation platforms already established, this role offers a true ground‑floor opportunity to drive the next phase of product growth. You will help shape our convergence strategy in the Service Provider space and deliver high‑impact features powering Web, Cloud, Data Center, and Mobile networking solutions. Design, implement, and test C, C++, and P4 programs to define packet‑processing behaviors on high‑performance network devices. Build, optimize, and enhance the backend of the P4 compiler to fully leverage the capabilities of advanced networking hardware. Solve complex resource‑management challenges and optimize resource allocation across programmable network‑processing pipelines. Collaborate closely with ASIC engineers to ensure seamless integration of P4 programs with next‑generation IC designs, including providing compiler support throughout hardware development cycles. Participate in the design and implementation of new C, C++, and P4 language features to support the evolving needs of network application developers. Develop Python‑based test frameworks and author Python test cases to validate SDK functionality and ensure correctness, performance, and reliability of P4‑based data‑plane programming. Minimum Qualifications Bachelor’s degree with 5+ years of relevant experience or master's degree with 3+ years, or PhD with 0+ years of relevant experience in a STEM discipline. Experience in software design and development using C, C++, and Python, including contributions to production‑quality systems. Experience in troubleshooting, debugging, and resolving complex software issues across large, distributed codebases, with practical experience in using tools such as GDB, PDB, etc. Experience with Layer 2 (L2) and Layer 3 (L3) networking technologies, protocols, and data‑plane behaviors. Preferred Qualifications Experience with network‑processor software programming is a strong plus. Hands‑on experience with P4 and low‑level microcode development. Why Cisco? At Cisco, we’re revolutionizing how data and infrastructure connect and protect organizations in the AI era – and beyond. We’ve been innovating fearlessly for 40 years to create solutions that power how humans and technology work together across the physical and digital worlds. These solutions provide customers with unparalleled security, visibility, and insights across the entire digital footprint. Fueled by the depth and breadth of our technology, we experiment and create meaningful solutions. Add to that our worldwide network of doers and experts, and you’ll see that the opportunities to grow and build are limitless. We work as a team, collaborating with empathy to make really big things happen on a global scale. Because our soluti ... (truncated, view full listing at source)