Software Engineer, Quantum Systems Validation

Company Mission & Overview

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 approach are based on silicon photonics. By leveraging the 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’t feel heat, are immune to electromagnetic interference, and integrate with existing cryogenic cooling and standard fiber‑optic infrastructure.

In 2024, Psi Quantum announced government‑funded projects to support the build‑out of our first utility‑scale quantum computers in Brisbane, Australia, and Chicago, Illinois. These initiatives reflect a growing recognition that quantum computing will be strategically and economically defining—and that now is the time to scale.

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 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. It represents a fundamental shift—and a path to mastering challenges that cannot be solved any other way. The potential is enormous, and we have a clear path to make it real.

Come join us.

At Psi Quantum we are developing and testing prototype quantum computer systems with complex software and hardware including integrated photonics, optics, electronics, and cryogenics subsystems. The Quantum Systems Validation team is responsible for characterizing the performance of integrated quantum optical systems and subsystems. As a Software Engineer on this team, you will design, build, and maintain the software tools that enable physicists and engineers to configure, test and validate system designs efficiently.

You will work closely with validation engineers to write and improve software for acquiring, analyzing, storing, and visualizing data on quantum computer prototypes.

• Design and implement software tools that focus on internal user needs and allow for a long‑running, ever‑evolving system.
• Enable physicists and engineers to develop test scripts, share data, and validate photonic quantum computer systems performance.
• Provide technical leadership including code reviews, pair programming, and mentoring, to promote high‑quality, well‑documented software from contributors from a variety of backgrounds.
• Build robust unit, integration, and hardware‑in‑the‑loop tests to ensure system stability.
• Collaborate across teams to debug issues, provide rapid solutions, and contribute to long‑term design improvements.
• Partner with design teams to define validation objectives and ensure system designs meet those requirements.
• Write requirements for data, APIs, and hardware features that will be provided by other teams.

• Bachelor’s degree in computer science, mathematics, physics, engineering, or a related field.
• Advanced knowledge of Python including libraries for data analysis, unit testing, and Web APIs.
• Extensive experience using Git for version control in a collaborative software environment.
• Ability to work independently with limited direction and manage responsibility and ownership for delivering validation objectives.
• Excellent verbal and written communication skills with an ability to communicate effectively to a variety of audiences including senior leadership and technical experts.
• Demonstrated interest in…