Networking Operating System Firmware Engineer

Responsibilities

• Design, develop, and maintain custom NOS images for large-scale AI fabrics, using open source components from SONiC, FRR, and related networking stacks.
• Integrate, build and configure Linux kernel components, device drivers, switch ASIC SDKs, and SAI layers.
• Bring up new switch platforms, including thermal and fan control, power monitoring, transceiver management, watchdogs, OSFP CMIS, LEDs, CPLDs, and board-specific platform logic.
• Extend and customize NOS services for routing, telemetry, control-plane state, and distributed automation.
• Implement and debug route, neighbor, next-hop, and ECMP programming flows from control-plane intent through ASIC hardware state.
• Build software mechanisms that distinguish control-plane acceptance, SAI/SDK acceptance, and explicit hardware programming acknowledgement.
• Work with hardware teams to validate ASIC configurations, link bring-up, SerDes tuning, buffer profiles, and performance baselines.
• Evaluate switch silicon SDK releases, track vendor deliverables, and validate platform requirements with vendors and ASIC partners.
• Debug complex issues spanning kernel drivers, platform monitoring, NOS services, routing agents, orchestration services, hardware signals, ASIC state, and network topology.
• Integrate switches into fleet-wide monitoring, remote diagnostics, telemetry pipelines, and automated lifecycle workflows.
• Develop robust CI/CD pipelines for reproducible NOS builds and controlled rollout across the fleet.
• Support factory bring-up and qualification all the way through mass deployment.
• Collaborate on networking protocols and technologies that improve performance and reliability at AI factory scale.

Requirements

• Proven experience working with SONiC or comparable NOS stacks such as FBOSS, Cumulus Linux, Arista EOS, Junos PFE-level integration, or equivalent platform software.
• Strong software engineering fundamentals: clear interfaces, data models, state-machine design, error handling, testing, observability, performance debugging, and maintainable C/C++, Python, Go or Rust code.
• Experience with Linux kernel internals, network device drivers, platform drivers, hwmon, I2C/SMBus, CPLDs, or board-level platform software.
• Experience integrating or debugging Broadcom, Marvell, NVIDIA, Intel, or comparable switch ASIC SDKs and SAI implementations.
• Understanding of L2/L3 forwarding, ECMP, RoCE, BGP, QoS, PFC, buffer tuning, and telemetry.
• Experience with platform bring-up and board-level debugging across thermal, fan, power, transceiver, LED, watchdog, CPLD, or OSFP CMIS flows.

Nice-to-Haves

• Experience with OpenConfig gNMI interfaces, YANG data models, or structured telemetry.
• Familiarity with CI/CD pipelines, distributed config and state management, reproducible builds, and large-scale automation.
• Ability to independently drive ambiguous NOS or platform feature development from problem definition through implementation, validation, rollout, and debugging across software, hardware, and vendor boundaries.
• Familiarity with Rust or Go.