Intern - Analog Design

Intern - Analog Design

As Generative AI continues to advance, the performance drivers for data center infrastructure are shifting from systems-on-chip (SOCs) to systems of chips. In the era of Accelerated Computing, data center bottlenecks are no longer limited to compute performance, but rather the system's interconnect bandwidth, memory bandwidth, and memory capacity. Celestial AI's Photonic Fabric™ is the next-generation interconnect technology that delivers a tenfold increase in performance and energy efficiency compared to competing solutions.

The Photonic Fabric™ is available to our customers in multiple technology offerings, including optical interface chiplets, optical interposers, and Optical Multi-chip Interconnect Bridges (OMIB). This allows customers to easily incorporate high bandwidth, low power, and low latency optical interfaces into their AI accelerators and GPUs. The technology is fully compatible with both protocol and physical layers, including standard 2.5D packaging processes. This seamless integration enables XPUs to utilize optical interconnects for both compute-to-compute and compute-to-memory fabrics, achieving bandwidths in the tens of terabits per second with nanosecond latencies.

This innovation empowers hyperscalers to enhance the efficiency and cost-effectiveness of AI processing by optimizing the XPUs required for training and inference, while significantly reducing the TCO2 impact. To bolster customer collaborations, Celestial AI is developing a Photonic Fabric ecosystem consisting of tier-1 partnerships that include custom silicon/ASIC design, system integrators, HBM memory, assembly, and packaging suppliers.

About The Role

We are building next-generation 50G/100G optical link solutions for data-centric computing, leveraging advanced silicon photonics integrated with cutting-edge CMOS electronics. We are looking for an Analog Design Intern to contribute to the design, verification, and validation of high-speed analog and mixed-signal circuits for our photonic transceivers and Electronic Integrated Circuits (EICs).

As an intern, you will work closely within our Analog and Mixed-Signal (AMS) team to develop the circuit design skills needed to deliver scalable, low-power, high-performance EICs in leading-edge technology processes for optical compute and interconnects. This role will provide hands-on experience across the full chip lifecycle, from schematic design to tapeout and silicon validation.

Essential Duties and Responsibilities

• Design and simulate high-speed analog and mixed-signal circuits (e.g., drivers, TIAs, equalizers, PLLs, bias/voltage regulators) in advanced CMOS processes.
• Perform transistor-level design, schematic capture, and simulation using Cadence Virtuoso and Spectre.
• Collaborate with layout engineers to optimize circuit implementation for performance, area, and power.
• Participate in chip tapeout activities, including verification, corner simulations, and design reviews.
• Contribute to lab bring-up and silicon measurements, correlating results with simulations and assisting in debugging.
• Support methodology improvements by developing testbenches, automation scripts, and documentation.

Qualifications

• PhD or MS candidate in Electrical Engineering with focus on Analog/Mixed-Signal IC Design.
• Strong foundation in analog circuit design, including amplifiers, biasing, current mirrors, and high-speed signal paths.
• Familiarity with high-speed design techniques (jitter, noise, bandwidth, equalization, matching).
• Experience with Cadence Virtuoso, Spectre, and related analog design tools.
• Prior exposure to chip tapeout and post-silicon measurement/validation is strongly preferred.
• Knowledge of scripting languages (Python, SKILL, etc.) a plus.
• Knowledge of system verilog modeling on analog circuits a plus.
• Excellent written and oral communication skills.
• Proactive, detail-oriented, and eager to learn quickly in a fast-paced environment.

Location: Toronto, Ontario, Canada (Onsite)

This paid internship, which will be at least 4 months in duration, offers an hourly rate of $45 CAD for Master's-level candidates and $55 CAD for PhD-level candidates. As an intern, you will not be eligible for company-sponsored benefits such as health and dental coverage, life insurance, stock options, or retirement plans. However, you will receive all entitlements under Ontario's Employment Standards Act, including vacation pay and statutory holiday pay, where applicable.