Software Engineer - Host Networking

At Meta, we're building and operating one of the world's most dynamic and fast-paced networks, powering our global data centers and supporting advanced technologies like AI, Generative AI, Recommendation engines, and Metaverse. Our network infrastructure teams are responsible for developing, deploying, and operating this complex system, covering the entire network lifecycle from hardware development to operation. We're seeking software engineers to join our teams and help build scalable distributed systems, develop effective solutions to our challenges, and ship them into production. As part of our network engineering teams, you'll have the opportunity to work on advanced switching technology, collaborate with engineers, and contribute to the development of Meta's hyper-scale network infrastructure.Design, develop, and validate drivers, firmware, and software for network devices, transport stacks, and AI workloads Debug complex system-level issues and lead performance tuning exercises to optimize software stack performance Understand software components from multiple partner teams, lead integration efforts, and drive continued development Develop and automate test suites for CI/CD framework and various components Collaborate with partner teams to integrate software components, align on goals, and participate in oncall rotations Design, develop, and deploy services to manage datacenter network switches and forwarding functions Enhance HPC collective communication and parallel computing libraries (NCCL, RCCL, OneCCL, MPI) Develop infrastructure to maintain switch state and enable communication between services at scaleBachelor's degree in Computer Science, Computer Engineering, relevant technical field, or equivalent practical experience 7+ years software development experience in industry settings or PhD with 4+ years of experience 3+ years relevant experience with network devices and products (routers, switches, adapters, load balancers) and an understanding of network routing protocols in industry settings Proficiency in C/C++ and at least one scripting language (Python/Shell Scripting) Experience with developing and automating test suites Experience collaborating with cross-functional teams (e.g., hardware, firmware, test) to define and deliver technical solutions Experience with one of: platform services (program, control, and monitor Optics, Physical Layer (PHY), FPGAs, sensors, fan control, power etc), Board Support Package (BSP), Operating Systems, Kernel, Bootloader, Power Management, Real-Time Operating System (RTOS), Linux Working knowledge of transport stack particularly Remote Direct Memory Access (RDMA) and/or RDMA over Converged Ethernet version 2 (RoCEv2) Parallel computing platforms such as CUDA, RoCM and OpenCL Linux Kernel, especially drivers and network stack Qemu, FPGA Emulation environment is a plus Systems programming, TCP/IP, HTTP/HTTPS, SPDY, DNS, and load balancersMeta builds technologies that help people connect, find communities, and grow businesses. When Facebook launched in 2004, it changed the way people connect. Apps like Messenger, Instagram and WhatsApp further empowered billions around the world. Now, Meta is moving beyond 2D screens toward immersive experiences like augmented and virtual reality to help build the next evolution in social technology. People who choose to build their careers by building with us at Meta help shape a future that will take us beyond what digital connection makes possible today-beyond the constraints of screens, the limits of distance, and even the rules of physics.Meta is proud to be an Equal Employment Opportunity employer. We do not discriminate based upon race, religion, color, national origin, sex (including pregnancy, childbirth, reproductive health decisions, or related medical conditions), sexual orientation, gender identity, gender expression, age, status as a protected veteran, status as an individual with a disability, genetic information, political views or activity, or other applicable legally protected characteristics. You may view our Equal Employment Opportunity notice here .Meta is committed to providing reasonable accommodations for qualified individuals with disabilities and disabled veterans in our job application procedures. If you need assistance or an accommodation due to a disability, fill out the Accommodations request form .