Senior Software Engineer, Forwarding (L2|L3|VXLAN), Networking
First seen by Alion on Oct 21, 2026.
Who You Will Work With:
At Data Center Business Unit at Cisco, we are dedicated to driving innovation in networking technologies. Our focus is on developing groundbreaking Ethernet Switching products that address the evolving needs of modern network infrastructures, including those in AI, cloud computing, and enterprise environments. In this role, you will have the opportunity to learn a wide range of core Ethernet Technologies with architectural exposure to craft and develop Ethernet Switching as applied to both Public and Private cloud infrastructure. You will work on the intricacies of the critically important infrastructure that enables the world-class, multi-layered Nexus switches. In addition, you will have the opportunity to participate in multi-functional collaboration and be exposed to all facets of the software development cycle from innovation, marketing requirement to product delivery.
What You Will Do:
- Design and Develop System Software for Ethernet Switch Products
- Develop SDK for next generation feature rich network ASIC
- Collaborate with cross functional teams which includes Hardware/ASIC/Marketing/Testing groups to take developed products to market.
- Interact and Innovate with close collaboration with Distinguished and Principal engineers with focus on Scale, Performance and Reliability
Who You Are:
- Typically requires BSEE/CS combined with 8+ yrs of related experience.
- We are looking for talented and passionate Software Engineers to join the team and contribute to crafting advanced Ethernet Switching solutions.
- Strong proficiency in C/C++ and experience with network programming and protocols.
- Strong working knowledge of Networking Technologies like L2/L3/VXLAN/MPLS/ACL/QOS
- Proven understanding of Operating Systems and Distributed Systems
- Hands on Experience in Switch/Router Software Development
- Prior experience in developing SDK for Custom/Merchant ASIC's is a strong Plus
Why Cisco
#WeAreCisco. We are all outstanding, but collectively we bring our talents to work as a team, to develop innovative technology and power a more inclusive, digital future for everyone. How do we do it Well, for starters – with people like you!
Nearly every internet connection around the world touches Cisco. We're the Internet's optimists. Our technology makes sure the data traveling at light speed across connections does so securely, yet it's not what we make but what we make happen which marks us out. We're helping those who work in the health service to connect with patients and each other; schools, colleges, and universities to guide in even the most challenging of times. We're helping businesses of all shapes and sizes to connect with their employees and customers in new ways, providing people with access to the digital skills they need and connecting the most remote parts of the world – whether through 5G, or otherwise.
We tackle whatever challenges come our way. We have each other's backs, we recognize our accomplishments, and we grow together. We celebrate and support one another – from big and small things in life to big career moments. And giving back is in our DNA (we get 10 days off each year to do just that).
We know that powering an inclusive future starts with us. Because without diversity and a dedication to equality, there is no moving forward. Our 30 Inclusive Communities, that bring people together around commonalities or passions, are leading the way. Together we're committed to learning, listening, caring for our communities, whilst supporting the most vulnerable with a collective effort to make this world a better place either with technology, or through our actions.
So, you have colorful hair Don't care. Tattoos Show off your ink. Like polka dots That's cool. Pop culture geek Many of us are. Passion for technology and world changing Be you, with us! #WeAreCisco