Software Engineer - Host Networking - Full-time

**Summary:** 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 cutting-edge 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 innovative solutions to our challenges, and ship them into production. As part of our network engineering teams, you'll have the opportunity to work on cutting-edge switching technology, collaborate with talented engineers, and contribute to the development of Meta's hyper-scale network infrastructure. **Required Skills:** Software Engineer - Host Networking Responsibilities: 1. Design, develop, and validate drivers, firmware, and software for network devices, transport stacks, and AI workloads 2. Debug complex system-level issues and lead performance tuning exercises to optimize software stack performance 3. Understand software components from multiple partner teams, lead integration efforts, and drive continued development 4. Develop and automate test suites for CI/CD framework and various components 5. Collaborate with partner teams to integrate software components, align on goals, and participate in oncall rotations 6. Design, develop, and deploy services to manage datacenter network switches and forwarding functions 7. Enhance HPC collective communication and parallel computing libraries (NCCL, RCCL, OneCCL, MPI) 8. Develop infrastructure to maintain switch state and enable communication between services at scale **Minimum Qualifications:** Minimum Qualifications: 9. Bachelor's degree in Computer Science, Computer Engineering, relevant technical field, or equivalent practical experience 10. 5+ years software development experience in industry settings or PhD with 2+ years of experience 11. 3+ years relevant experience with network devices and products (routers, switches, adapters, load balancers) and an understanding of network routing protocols in industry settings 12. Proficiency in C/C++ and at least one scripting language (Python/Shell Scripting) 13. Experience with developing and automating test suites **Preferred Qualifications:** Preferred Qualifications: 14. Systems programming, TCP/IP, HTTP/HTTPS, SPDY, DNS, and load balancers 15. Linux Kernel, especially drivers and network stack 16. Working knowledge of transport stack particularly Remote Direct Memory Access (RDMA) and/or RDMA over Converged Ethernet version 2 (RoCEv2) 17. Qemu, FPGA Emulation environment is a plus 18. Parallel computing platforms such as CUDA, RoCM and OpenCL 19. 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 **Public Compensation:** $70.67/hour to $208,000/year + bonus + equity + benefits **Industry:** Internet **Equal Opportunity:** Meta is proud to be an Equal Employment Opportunity and Affirmative Action employer. We do not discriminate based upon race, religion, color, national origin, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender, gender identity, gender expression, transgender status, sexual stereotypes, age, status as a protected veteran, status as an individual with a disability, or other applicable legally protected characteristics. We also consider qualified applicants with criminal histories, consistent with applicable federal, state and local law. Meta participates in the E-Verify program in certain locations, as required by law. Please note that Meta may leverage artificial intelligence and machine learning technologies in connection with applications for employment. Meta is committed to providing reasonable accommodations for candidates with disabilities in our recruiting process. If you need any assistance or accommodations due to a disability, please let us know at accommodations-ext@fb.com.