Staff Software Engineer, Databases

PSI Quantum; Palo Alto (CA); On-site; USD 180,000 - 220,000; Full time

Job summary

PSI Quantum in Palo Alto is seeking a Senior Software Engineer specializing in Calibration & Control to develop and maintain software systems for quantum computing. This pivotal role involves the design of algorithms and controls for our quantum processors, which must operate continuously.

The ideal candidate will have over 15 years of experience with Python or C++ and a solid background in large-scale distributed systems, specifically graph databases. A Bachelor's degree or equivalent experience is preferred.

Flexible compensation based on experience, with U.S. base pay ranging from $180,000 to $205,000, and $200,000 to $220,000 for Bay Area roles.

Qualifications

• 15+ years experience with Python or C++ in a system software context.
• Design and implementation of large scale distributed storage systems.
• Proven track record of developing reliable, performant software.

Responsibilities

• Design and implement algorithms, controls, and software for quantum processors.
• Scale and extend core database systems for complex systems.
• Participate in design and code reviews.
• Collaborate across research teams at PsiQuantum.
• Champion good software development practices.

Skills

Python

C++

Graph databases

High performance computing

Data systems design

Education

Bachelor's degree in a technical discipline

Job description

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. Your role as a Senior Software Engineer, Calibration & Control is to design and implement algorithms, controls, and software that keep our quantum processors in spec 24/7x365.

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 and 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.
• Bachelor's degree in a technical discipline preferred, or equivalent experience.

Ways to Stand Out

• Experience with 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 uptime‑critical environment.
• PhD in a related technical discipline is a plus but not required.

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 [e-mail].

We are not accepting unsolicited resumes from employment agencies.

U.S. Base Pay Range: $180,000 – $205,000 USD (non‑Bay Area). Bay Area Pay Range: $200,000 – $220,000 USD.

We are open to adjusting the compensation to experience level.