Senior Software Engineer, Simulation & Infrastructure

Cisco Systems, Inc.
paid time off
United States, California, Milpitas
Apr 18, 2025
The application window is expected to close on: 4/25/2025 Job posting may be removed earlier if the position is filled or if a sufficient number of applications are received. Meet the Team The Simulation & Infrastructure Team at Cisco is dedicated to developing innovative software tools designed to enhance engineering productivity across routing and switching platforms through groundbreaking technologies. Our small, highly entrepreneurial team delivers digital twins of our most complex platforms, offering a comprehensive ecosystem. This includes high-performance Silicon One data plane simulation, modular chassis simulation, network topology orchestration, CI/CD automation, and associated compute infrastructure. Our customers comprise internal development and testing teams, customer engagement teams, and external global ISPs and hyperscalers. Join us and be part of shaping the future. Your Impact As a Software Engineer for Simulation & Automation, on the Cisco 8000 team, you will be responsible for leading, implementing, and optimizing simulation software and tools used in accelerating our IOS-XR & SONIC development. You will work with Silicon One ASIC, SDK, and Network software teams to create digital twins of our router and AI fabric products. You will work on some of the following: Work on our simulation platform and virtual routers that support our Cisco 8000 platform. Collaborate with Silicon One ASIC, SDK, and Network software teams to develop and enhance data-plane simulation software, ensuring accurate digital twins of router and AI fabric products. Optimize code, tuning code, complete performance analysis and work on backend compilers. Tackle complex technology, building large scale distributed systems, and contributing to open-source communities and technologies. Minimum Qualifications: Bachelor's degree in computer science or a related field of study with 7 + years of relevant experience or a Master's Degree with 4 + years of experience in a related field of work. Experience developing software for routing and switching planforms. Networking protocols and data-plane experience (BGP, MPLS, TCP/IP, OSPF, RIP, IPv4, IPv6, etc.) Ability to program in C or C++ with experience writing test scripts, preferably with Python. Preferred Qualifications: Experience with implementing and deploying simulators or virtualization tools. Experience in compiler development, including backend compiler design, code generation, and code optimization. Proficient in writing P4 NLP for converting P4 into C++. Experience with Linux or other like network operating systems. Excellent problem-solving, debugging and analytical skills. High level of work autonomy and sense of responsibility. #WeAreCisco #WeAreCisco where every individual brings their unique skills and perspectives together to pursue our purpose of powering an inclusive future for all. Our passion is connection-we celebrate our employees' diverse set of backgrounds and focus on unlocking potential. Cisconians often experience one company, many careers where learning and development are encouraged and supported at every stage. Our technology, tools, and culture pioneered hybrid work trends, allowing all to not only give their best, but be their best. We understand our outstanding opportunity to bring communities together and at the heart of that is our people. One-third of Cisconians collaborate in our 30 employee resource organizations, called Inclusive Communities, to connect, foster belonging, learn to be informed allies, and make a difference. Dedicated paid time off to volunteer-80 hours each year-allows us to give back to causes we are passionate about, and nearly 86% do! Our purpose, driven by our people, is what makes us the worldwide leader in technology that powers the internet. Helping our customers reimagine their applications, secure their enterprise, transform their infrastructure, and meet their sustainability goals is what we do best. We ensure that every step we take is a step towards a more inclusive future for all. Take your next step and be you, with us!