Signal Integrity Engineer I Hardware Engineering US - Headquarters US - Headquarters Reg - Full-Time 117000 - 129000 Why join Upscale AI Upscale AI is building the high-performance infrastructure powering the next generation of artificial intelligence. Backed by over $300M in funding and rapid global adoption, we are scaling systems designed for the world’s most demanding AI workloads. We focus on first-principles engineering across silicon, systems, and networking—where performance, scale, and execution are critical. Our team is talent-dense and high-performing. We value ownership, technical rigor, and speed, and we offer the opportunity to work on foundational problems with immediate, real-world impact. If you’re looking to do high-impact work, move fast, and help define the infrastructure behind the future of AI—Upscale AI is where you can produce meaningful work at the frontier—and operate at a high standard. Where you fall within that range depends on your experience, skills, and impact—we benchmark against internal levels to keep things fair and consistent. Equal Opportunity Upscale AI is building a team that reflects a wide range of perspectives, backgrounds, and experiences. We’re proud to be an Equal Opportunity Employer and consider all qualified applicants regardless of race, color, religion, national origin, sex, sexual orientation, gender identity, disability, or veteran status. Accessibility & Accommodations We’re committed to making our hiring process accessible to everyone. If you need accommodations at any stage, just reach out to us at hiring@upscaleai.com—we’re happy to help. Note: This inbox is only for accommodation requests. Responsibilities

Support SI/PI analysis for high-speed PCB designs from architecture through product validation.
Assist with channel modeling, simulation, and optimization for high-speed interfaces.
Perform signal quality measurements using laboratory equipment.
Support PCB stackup reviews, routing reviews, and design guideline development.
Analyze transmission lines, vias, connectors, cables, and package-to-board interfaces.
Participate in correlation between simulation and laboratory measurements.
Work closely with PCB designers, hardware engineers, package engineers, and silicon teams.
Document simulation results, measurements, and design recommendations.
Assist in root-cause analysis and debugging of signal integrity issues.

Preferred Qualifications

BS or MS in Electrical Engineering or related field.
0–3 years of experience in Signal Integrity, PCB Design, Hardware Design, or related areas.
Basic understanding of:
- High-speed digital design
- Transmission line theory
- PCB stackups and routing
- S-parameters and eye diagrams
- SI and PI fundamentals

Exposure to one or more simulation tools such as:

Cadence Clarity
Cadence Sigrity
Keysight ADS
Ansys HFSS

Exposure to laboratory instruments such as:

Vector Network Analyzer (VNA)
TDR/TDT
High-speed Oscilloscopes
Strong analytical and problem-solving skills.
Excellent communication and teamwork abilities.

Nice to Have

Experience with 56G/112G/224G SerDes systems.
Knowledge of PCIe, Ethernet, UCIe, DDR interfaces

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