Staff Software Engineer, Databases

PsiQuantumsmission is to build the first useful quantum computersmachines 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 industryincluding partners like GlobalFoundrieswe use the same high-volume processes that already produce billions of chips for telecom and consumer electronics. Photonics offers natural advantages for scale: photonsdontfeel heat are immune to electromagnetic interference and integrate with existing cryogenic cooling and standard fiber-optic infrastructure.

In 2024PsiQuantumannounced 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 definingand that now is the time to scale.

PsiQuantumalso develops the algorithms and software needed to make these systems commercially valuable. Our application software and industry teams work directly with leading Fortune 500 companiesincluding Lockheed Martin Mercedes-Benz Boehringer Ingelheim and Mitsubishi Chemicalto prepare quantum solutions for real-world impact.

Quantum computing is not an extension of classical computing. Itrepresentsa fundamental shiftand a path to mastering challenges that cannot besolvedany other way. The potential is enormous and we have a clearpathto make it real.

Come join us.

Job Summary:

The OS Core Team at PsiQuantum works closely alongside engineers and scientists in the electronics system architecture and validation teams and is responsible for building the scalable distributed fault-tolerant control plane and operating system for utility scale photonic quantum computers. Our team is responsible for orchestration scheduling kernel architecture co-design calibration validation providing abstractions systems and operating software for the immense heterogenous fabric of co-processors networks and photonics that are critical to the success of our companys goal of building the worlds first useful quantum computer. As a Senior Software Engineer Calibration & Control you will design and implement algorithms controls and software that keep our quantum processors in spec 247x365.

Responsibilities:

The core of our system revolves around a high performance scalable graph database which contains critical information to control and manage PsiQuantum computing systems. Your role is to scale and extend the current core database systems to support the massive increase in size complexity of our systems.

Daily functions:

Data systems design and implementation.
Participate in design and code reviews.
Collaborate across software hardware and research teams at PsiQuantum.
Testing and maintenance of database software.
Champion and serve as an exemplar of good software development practices at PsiQuantum.

Experience/Qualifications:

15 years experience with Python or C in a system software context.
Design and implementation of large scale distributed storage systems emphasis on graph databases.
Proven track record of developing and shipping reliable performant software in a high scale or mission critical context.
Bachelors degree in a technical discipline preferred or equivalent experience.

Ways to stand out:

Experience in graph database systems such as Nebula neo4j Gravlax.
Experience in high performance computing and data design.
Experience in computer architecture.
Experience in high performance networking.
Experience with highly scalable distributed systems in a reliability and up-time critical environment.
PhD in a related technical discipline is a plus but not required.

We are open to adjusting the compensation to experience level

Note: PsiQuantum will only reach out to you using an official PsiQuantum email address and will never ask you for bank account information as part of the interview process. Please report any suspicious activity to.

We are not accepting unsolicited resumes from employment agencies.