System Software Engineer, Networking - Sunnyvale, United States
Originally posted 15 July 2026 by the employer.
About the role
Design, build, and optimize the multi-hop fabrics that connect Tensordyne's AI inference systems at rack, pod, and cluster scale. You will work across userspace services, Linux kernel drivers, switch ASIC SDK/SAI layers, and platform firmware to optimize latency, bandwidth, and reliability for lossless networks.
What you'll do
- Architect non-blocking multi-hop scale-out fabrics (Clos spine–leaf and super-spine topologies) for distributed AI inference, defining redundancy, oversubscription, and performance targets. - Optimize lossless Ethernet and RDMA/RoCE transport using congestion-control mechanisms such as PFC, ECN, and DCQCN, including buffer and QoS tuning. - Drive route, neighbor, next-hop, and ECMP programming flows from control-plane intent down to confirmed switch ASIC hardware state. - Select and validate switches, optics, transceivers, and cabling systems, leading fabric bring-up, link training, SerDes tuning, and performance baselining. - Debug cross-boundary networking issues spanning Linux kernel drivers, platform monitoring, routing agents, ASIC state, optics, firmware, and topology. - Build high-resolution telemetry pipelines to detect microbursts and expose congestion patterns across the fleet.
What you'll need
- Strong experience designing and operating data center or HPC networks supporting distributed AI or tightly-coupled workloads. - Deep, hands-on familiarity across the networking stack: L2/L3 forwarding, ECMP, BGP, RoCE, QoS, PFC, buffer tuning, and telemetry. - Track record of system optimization across userspace services, the Linux kernel, network device drivers, and firmware/SDK layers. - Solid software engineering fundamentals and maintainable code in C/C++, Python, Go, and/or Rust. - BS or MS in Electrical Engineering, Computer Science, or a related technical field, or equivalent practical experience.
Nice to have
- Experience with SONiC or comparable network operating system stacks (FBOSS, Cumulus Linux) and SAI implementations. - Experience integrating or debugging switch ASIC SDKs from Broadcom, Marvell, NVIDIA, Intel, or comparable vendors. - Familiarity with InfiniBand and high-performance Ethernet fabric design. - Platform and board-level bring-up experience touching thermal/fan control, power monitoring, transceivers, watchdogs, CPLDs, OSFP/CMIS, or LEDs. - Experience with OpenConfig gNMI, YANG data models, or structured telemetry pipelines.
Skills: multi-hop fabrics, Linux kernel, network device drivers, RDMA/RoCE, data center networks
This role has been open 97 days — well above the 79-day median for Systems Software Engineering roles.
Systems Software Engineering · Networking Software
|
Open roles in category
37
|
Median days open
79 d
|
Median salary
—
|
See the full market breakdown ▾Category comparison, skills in demand, and who else is hiring
| Metric | Tensordyne | All employers we track in this specialty (37 roles · 16 employers) |
|---|---|---|
| Open roles in this specialty | 1 | 37 |
| Open roles in the wider Software, Firmware & Systems family | 11 | 6222 · 145 employers |
| Median days open | 97 d | 79 d (+18 d vs this employer) |
| Median salary (USD postings) | — | — |
Skills observed across this category: multi-hop fabrics, Linux kernel, network device drivers, RDMA/RoCE, data center networks
Who's hiring in this category
- NVIDIA · 19 open roles · median 67 d
- Analog Devices · 4 open roles · median 44 d
- Applied Materials · 1 open role · median 61 d
- Arm Holdings · 1 open role · median 79 d
- Coherent Corp · 1 open role · median 103 d
- Cornelis Networks · 1 open role · median 125 d
How we counted: 37 open Systems Software Engineering (Networking Software) roles from 16 employers tracked in the SemiconductorJobs index, counted 20 Oct 2026. Specialty figures count only roles carrying this exact specialty label, so an employer's related work in neighbouring specialties is not included there — it is counted in the wider Software, Firmware & Systems family row. Figures refresh nightly.