Principal Hardware Design Engineer

Quantum computing holds the promise of humanity's mastery over the natural world, but only if we can build a real quantum computer. PsiQuantum is on a mission to build the first real, useful quantum computers, capable of delivering the world-changing applications that the technology has long promised. We know that means we will need to build a system with roughly 1 million qubits that supports fault-tolerant error correction within a scalable architecture, and a data center footprint.

By harnessing the laws of quantum physics, quantum computers can provide exponential performance increases over today's most powerful supercomputers, offering the potential for extraordinary advances across industries including climate, energy, healthcare, pharmaceuticals, finance, agriculture, transportation, materials design, and more.

PsiQuantum has identified the fastest path to delivering a useful quantum computer, years ahead of the industry. Our architecture is based on silicon photonics, enabling us to produce components at Tier-1 semiconductor fabs like GlobalFoundries, utilizing high-volume semiconductor manufacturing processes. Photons do not feel heat or electromagnetic interference, allowing us to leverage existing cryogenic cooling systems and industry-standard fiber connectivity.

In 2024, PsiQuantum announced two government-funded projects to support building our first Quantum Data Centers and utility-scale quantum computers in Brisbane, Australia, and Chicago, Illinois. These projects are backed by nations recognizing quantum computing's transformative potential. We will build hardware and develop fault-tolerant quantum applications to deliver industry-changing results.

Quantum computing is not just an evolution but a key to mastering our future. The potential is enormous, and we have a plan to realize it. Join us on this extraordinary journey!

The Principal Hardware Design Engineer will support PsiQuantum's Electronics team by owning hardware designs integral to the quantum computer system. This role involves collaborating with thermal, mechanical, firmware, and optical engineers to ensure designs meet system architecture and physical framework requirements.

1. Design, create schematics, and oversee PCB layout of analog and digital circuitry, including high-speed transceivers, 10+ Gbps data links, FPGAs, microcontrollers, clock, and power distribution.
2. Ensure signal integrity and EMI suppression in all designs.
3. Design and create test setups for electro-optic modules.
4. Characterize, optimize, and debug circuitry using appropriate equipment.
5. Develop software to drive measurements and analyze data to extract key performance parameters.
6. Maintain detailed documentation of hardware designs, test results, and changes.
7. Use tools such as Orcad, Allegro PCB, C+, Python, VHDL/Verilog, Keysight PathWave ADS, and Microsoft Office.

• 12 years of experience with a Master's Degree or 8-15 years with a B.S. Degree.
• Results-oriented with attention to detail.
• Data-driven decision-making and strong problem-solving skills.
• Effective team player capable of working across departments, sites, and time zones.
• Excellent communication skills for diverse audiences.

PsiQuantum is an equal opportunity employer and does not discriminate based on race, color, religion, sex, gender identity, national origin, age, disability, veteran status, sexual orientation, or any other protected class.

PsiQuantum will only contact candidates using an official company email and will never request bank information during the interview process. Report any suspicious activity to (see below) . We are not accepting unsolicited resumes from employment agencies.

The target salary ranges are $230,000-$250,000 USD for the general US, and $240,000-$260,000 USD for the Bay Area, with actual compensation depending on qualifications and location. Full-time roles include benefits and equity. Compensation may be updated in the future.