Senior​/Electro-Optic Hardware Design Engineer

Position: Senior/Staff Electro-Optic Hardware Design Engineer

Psi Quantum's mission is to build the first useful quantum computers: machines capable of delivering the breakthroughs the field has long promised. Since our founding in 2016, our singular focus has been to build and deploy million-qubit, fault-tolerant quantum systems.

Quantum computers harness the laws of quantum mechanics to solve problems that even the most advanced supercomputers or AI systems will never reach. Their impact will span energy, pharmaceuticals, finance, agriculture, transportation, materials, and other foundational industries.

Our architecture and approachisbased on silicon photonics. Byleveragingthe advanced semiconductor manufacturing industry, including partners like Global Foundries, we use the same high-volume processes that already produce billions of chips for telecom and consumer electronics. Photonics offers natural advantages for scale: photons don'tfeel heat, are immune to electromagnetic interference, and integrate with existing cryogenic cooling and standard fiber-optic infrastructure.

That approach has since been tested at the highest level of scrutiny the U.S. government applies to emerging technology, and it has held up. In 2025,Psi Quantumclosed a $1 billionfunding round that valued the company at $7 billion. In 2026, the U.S. Department of Commerce signed a $100 million Letter of Intent under the CHIPS and Science Act, followed by a $125 million agreement with DARPA under Stage C of its Quantum Benchmarking Initiative,Psi Quantum'smost valuable U.S. government agreement to date.

This year, we also broke ground on our utility-scale quantum computer in Brisbane, Australia, and continued building out our Chicago site. Victor Peng, our CEO, and co-founder Jeremy O'Brien, now Executive Chairman, lead a team and board that reflects how seriously the world is taking this build, joined this year by Intel's Lip-Bu Tan and Atomico's Niklas Zennstrom.

Psi Quantum also develops the algorithms and software needed to make these systems commercially valuable. Our application, software, and industry teams work directly with leading Fortune 500 companies, including

Airbus,Lockheed Martin, Mercedes-Benz, Boehringer Ingelheim, and Mitsubishi Chemical, to prepare quantum solutions for real-world impact.

Quantum computing is not an extension of classical computing. Itrepresentsa fundamental shift, and a path to mastering challenges that cannot besolvedany other way. The potential is enormous, and we now havethe funding,the governmentvalidation, andthe sitesunder construction to make it real.

Job Summary:

We are seeking a senior- or staff-level engineer to own the detailed design, integration, and qualification of electro-optic hardware modules used in advanced photonic systems. Working alongside the Photonic Hardware Architect, this role turns system requirements and high-level concepts into robust rack-mountable or blade-format products containing optical amplifiers, attenuators, polarization controllers, power monitors, control electronics, and related optical and electro-optic subassemblies.

The engineer will lead internal design execution, direct external development partners, and establish the experimental evidence and verification rigor needed for sound technical and production decisions.

Overview:

• Own detailed electro-optic module design from requirements and concept selection through prototype build, EVT, DVT, and transfer to manufacturing.
• Translate system architecture into complete optical, electrical, mechanical, thermal, firmware-control, and test interfaces for rack-mountable boxes and blade assemblies.
• Serve as the hands-on technical lead connecting system architects, photonics, electronics, mechanical engineering, test, operations, and external suppliers.

Responsibil…