Senior Software Engineer, NOS Platform Engineer

Cornelis Networks delivers high-performance scale-out networking solutions for AI and HPC datacenters. The Senior Software Engineer will join the Network Operating System team to build and optimize NOS platforms, integrating hardware and software components to develop high-performance networking systems.

Responsibilities:

• Lead platform porting and BSP development for switch ASIC platforms, including hardware bring-up, driver integration, and platform-specific adaptations
• Integrate and validate ASIC drivers, optics/transceiver management, thermal/power management, and BMC/baseboard interfaces
• Design platform abstractions and implementations to support both SONiC and FBOSS architectures
• Design and implement control plane and data plane components for SONiC and FBOSS, ensuring seamless operation with underlying hardware
• Develop and maintain platform services and daemons for hardware monitoring, configuration, and management
• Collaborate with SAI/SDK team to integrate switch abstraction layer with SONiC and FBOSS architectures
• Build and maintain test frameworks, automation, and CI/CD pipelines for NOS platform validation; write comprehensive unit and integration tests
• Profile and optimize NOS performance for latency, throughput, and resource utilization
• Engage with the SONiC and FBOSS open-source communities, contribute improvements where applicable, and stay current with upstream developments
• Work closely with hardware, firmware, and systems teams to resolve integration issues and define platform requirements
• Leverage AI coding assistants and emerging tooling to accelerate development velocity and code quality

Requirements:

• BS in Computer Science, Computer Engineering, or related field
• 7-10 years of software engineering experience
• Strong proficiency in C/C++ and Python
• Linux systems programming and networking stack experience
• Switch/networking hardware experience OR network operating system development experience
• Strong debugging and problem-solving skills for complex hardware/software integration issues
• Excellent communication and collaboration skills
• Commitment to AI-first development practices and continuous learning of emerging AI tooling
• SONiC platform development experience (strongly preferred)
• FBOSS experience (highly desirable)
• Linux kernel and driver development experience
• Network protocol implementation experience (L2/L3 switching, routing, BGP, OSPF)
• Switch ASIC/SDK integration experience
• Experience with platform services and daemons (SONiC platform daemons, FBOSS agents, or similar)
• Hardware/ASIC architecture understanding
• Performance optimization and profiling experience (perf, gprof, valgrind, etc.)
• Open-source contribution history (SONiC, FBOSS, or other networking projects)
• Technical leadership and mentoring experience
• Experience with AI-assisted development tools (GitHub Copilot, Cursor, or similar)
• Familiarity with test automation frameworks and CI/CD systems
• Experience with platform bring-up, BSP development, or embedded Linux systems