Electrical Engineer (Cryogenics)

HardwareFull TimeToronto, ON

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At Xanadu, we are learners, innovators, researchers, collaborators and problem solvers. We are creating something that has never been built before. Few people in their life will be able to be a part of something like this, where if we are successful, the technologies we develop will solve some of the world’s most challenging problems, and literally change the world. And that is something to be excited about!

Your role and responsibilities:

As part of the Hardware Team, you will work with our established team of physicists and engineers to develop custom electronics for photonic quantum computers. In this role you will contribute your experience spanning high performance cabling, connectors, low-noise amplifiers and analog data acquisition both in and outside the cryogenic environment. You will join the growing low temperature team dedicated to the systems-level design and deployment of large-scale arrays of transition edge sensor (TES) microcalorimeters and their integration within the full hardware stack. Working hands-on in the lab, you will develop, deploy, optimize and debug high channel count electronic stages and custom cabling for high-density TES readout. In addition, you will interface with external partners and internal stakeholders to understand the critical requirements throughout the system.

Required Qualifications and Experience:

  • BSc (+ 3 years), MSc (+1 year) or PhD in Engineering, Experimental Sciences, or related relevant discipline
  • Experienced in the operation and requirements of ultra high vacuum (UHV) systems.
  • Experience working in a collaborative team-based development environment.
  • Ability to operate in a fast-paced environment and manage multiple competing priorities.
  • Custom circuit design and testing for analog signal conditioning in the DC-100MHz frequency range.
  • Experience in flexible PCB circuit and cable design and deployment.
  • Experience with common mechanical CAD design tools.
  • Experience with analog testing equipment (VNAs, ESAs, nanovolt meters etc)
  • Strong understanding of both acoustic-band and RF electrical noise sources (ground loops, EMI from ambient radio and nearby electrical equipment, etc) and mitigation strategies (shielding, noise cancellation, etc).

Preferred Knowledge and Experience:

  • 5+ years experience (including post graduate) working with ultra high channel count readout of cryogenic detectors (for example in CMB, TES, MKID applications)
  • Experience installing apparatus intra cryostat and conducting cold measurements.
  • Experience with independent operation of millikelvin cryogenic fridges, preferably with either an adiabatic demagnetization refrigerator and/or dilution refrigerator.
  • Experience automating and developing hardware control code using Python.
  • Experience with Altium, OrCAD, Eagle, KiCad, or similar design environments.
  • Experience designing analog interfaces between custom instruments and FPGA-based digital control systems.
  • Familiarity with principles of optics/photonics and common relevant components (photodiodes, modulators, lasers, fiber components).
  • Knowledge of common communication protocols (Ethernet, USB, I2C, etc).


To build quantum computers that are useful and available to people everywhere.


Our values are important. They are fundamental and lay the foundation for culture at Xanadu. Learn more about our values here.

At Xanadu, we are committed to building an inclusive, safe, and equitable culture and fostering an environment where our employees feel included, valued, and heard. We are committed to meeting the needs of all individuals and support a barrier-free workplace. Should you require accommodations at any point during the recruitment process please contact Human Resources at hr@xanadu.ai.