Sr. Staff High-Speed Communication Architect – AI Systems
$100,000 - $500,000 USD yearly
Architect 224G+ electrical links, flyover cables, and near-package and co-packaged optics for rack-scale AI accelerator fabrics.
Originally posted 12 November 2026 by the employer.
About the role
This role defines high-bandwidth communication architecture for rack-scale AI accelerator systems, owning the end-to-end communication path across AI chips, GPUs, CPUs, switches, memory systems, and network interfaces. Technical scope spans 224G+ electrical links, flyover cables, near-package and co-packaged optics, and rack-scale fabrics.
What you'll do
- Define rack-scale communication architecture for AI accelerators, GPUs, CPUs, switches, network adapters, memory, and I/O, including topology, lane counts, link budgets, redundancy, and 224G, 448G, and future-rate interfaces.
- Own end-to-end electrical and optical channel architecture across die, package, PCB, connectors, flyover cables, optical engines, and fiber.
- Lead 224G+ SerDes and signal-integrity architecture by setting channel reach and loss limits, modeling insertion/return loss, crosstalk, reflections, vias, jitter, and equalization, and establishing power, latency, BER, FEC, and thermal budgets.
- Co-design package, PCB, connector, cable, and optical interfaces with internal teams and suppliers, guiding low-loss materials, routing, breakout, cable and fiber attach, and optical-engine placement.
- Drive simulation and validation from architecture through production readiness, including reusable modeling methods, SI simulation correlation, 224G+ lab test plans, measurement, and failure analysis.
What you'll need
- BS, MS, or PhD in Electrical Engineering, Computer Engineering, or a related field with 15+ years of experience in high-speed electrical or optical communications.
- Proven experience architecting systems using 112G, 224G, or higher-rate SerDes with deep knowledge of PAM4 signaling, channel behavior, link budgets, equalization, jitter, BER, and FEC.
- Hands-on experience with 224G-class electrical channels, flyover cable technology, and near-package optics, optical engines, or dense optical interconnects.
- Expertise in signal integrity and high-speed package, PCB, connector, cable, and optical link design, including channel modeling and correlating simulations with lab measurements.
- Demonstrated ability to lead architecture decisions across ASIC, package, PCB, optical, mechanical, and system teams, balancing bandwidth, reach, power, latency, cost, thermal impact, manufacturability, and reliability.
Skills: SerDes, 224G, signal integrity, PAM4, co-packaged optics
More semiconductor jobs: Tenstorrent jobs · Signal integrity jobs · Austin jobs
First seen in our index 0 days ago, well below the 58-day median for High-Speed IO/SerDes Design roles.
High-Speed IO/SerDes Design · Serdes Highspeed
|
Open roles in category
256
|
Median days since first seen
58 d
|
Category median salary (all employers)
$206k
|
See the full market breakdown ▾Category comparison, skills in demand, and who else is hiring
| Metric | Tenstorrent | All employers we track in this specialty (256 roles · 53 employers) |
|---|---|---|
| Open roles in this specialty | 3 | 256 |
| Open roles in the wider Analog & Mixed-Signal family | 5 | 1534 · 116 employers |
| Median days since first seen | 229 d | 58 d (−171 d vs this employer) |
| Median salary (USD postings) | n/a | $206k |
Skills observed across this category: SerDes, 224G, signal integrity, PAM4, co-packaged optics
Who's hiring in this category
- Synopsys · 41 open roles · median 40 d
- AMD · 21 open roles · median 48 d
- Cadence Design Systems · 21 open roles · median 156 d
- NVIDIA · 18 open roles · median 217 d
- Qualcomm · 17 open roles · median 90 d
- Micron Technology · 11 open roles · median 50 d
How we counted: 256 open High-Speed IO/SerDes Design (Serdes Highspeed) roles from 53 employers tracked in the SemiconductorJobs index, counted 12 Nov 2026. Specialty figures count only roles carrying this exact specialty label, so an employer's related work in neighbouring specialties is not included there, and is counted in the wider Analog & Mixed-Signal family row. Days are counted from when our index first saw each posting, not from the employer's original posting date.