Why join Upscale, Inc.

Upscale, Inc., is building the high-performance infrastructure powering the next generation of artificial intelligence. Backed by over $500M 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 is where you can produce meaningful work at the frontier—and operate at a high standard.

About the Role

We are building a world-class SerDes engineering team to enable next-generation connectivity for AI data centers and high-performance computing.

We are seeking a highly accomplished Senior Principal Engineer to lead the design and development of advanced SerDes transmitter circuits. This role will drive key transmitter technologies spanning clock generation and distribution, high-speed DACs, output drivers, and innovative circuit techniques for extending bandwidth and improving power efficiency.

The ideal candidate combines deep expertise in high-speed analog and mixed-signal circuit design with hands-on experience in advanced transmitter architectures, time-interleaved DACs, high-speed clocking, and electromagnetic analysis. You will own critical design blocks from architecture and circuit development through layout collaboration, tape-out, and silicon validation, working closely with cross-functional teams to deliver leading-edge high-speed interconnect technology.

Responsibilities

Transmitter Design Leadership: Lead the architecture, design, and implementation of high-speed SerDes transmitter circuits targeting the next-generation high-speed interconnects, with a focus on performance, power efficiency, and silicon robustness.

Clocking Architecture: Drive transmitter clock generation, distribution, and timing optimization, including multiphase clocking, phase alignment, jitter management, and clock-to-data timing.

High-Speed DAC Development: Lead the design and optimization of high-speed DACs, including time-interleaved architectures, high-speed switching networks, linearity optimization, and power-efficient implementations.

DAC Calibration: Develop and optimize calibration techniques for high-speed time-interleaved DACs, addressing timing skew, gain and offset mismatch, nonlinearities, interleaving spurs, and process-voltage-temperature variations.

Output Driver Design: Lead the design of high-speed output drivers using both current-mode and voltage-mode architectures, optimizing output swing, impedance matching, linearity, power consumption, and signal integrity.

Bandwidth Extension Techniques: Develop advanced circuit techniques using passive elements and networks—including inductive peaking, impedance shaping, and other bandwidth-extension methods—to achieve the required high-frequency performance.

Electromagnetic Analysis: Apply electromagnetic simulation and extraction tools, such as Cadence EMX, Ansys HFSS, or other EM tools, to analyze and optimize passive structures, interconnects, coupling, and high-frequency circuit behavior.

Cross-Functional Integration: Collaborate with receiver, clocking, AMS layout, package, signal integrity, and silicon validation teams to optimize end-to-end link performance.

Silicon Execution: Drive circuit simulations, design reviews, physical implementation, tape-out readiness, silicon characterization, and performance correlation to ensure successful product delivery.

Technical Mentorship: Provide technical guidance to engineers, establish design best practices, and help raise the technical bar across the SerDes transmitter organization.

Qualifications

MS or PhD in Electrical Engineering or a related field, with substantial experience in high-speed analog and mixed-signal IC design.

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, Inc., 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.