Staff Software Engineer, PsiQuantum
Databases
$200-220k
Office located in Palo Alto, CA
Quantum computer builder
Be an early applicant
Quantum computer builder
501-1000 employees
Be an early applicant
$200-220k
Office located in Palo Alto, CA
501-1000 employees
Company mission
To build and deploy useful, fault tolerant quantum computers.
Role
Who you are
- 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
Desirable
- Experience in graph database systems such as Nebula, neo4j
- 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
What the job involves
- 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 company’s goal of building the world’s 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 24×7x365
- 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
- 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
Our take
Quantum computing will change the world more than any other imminent technological development, and PsiQuantum sits at the forefront of the charge to build the first quantum computer that will actually work.
The company is unique for the scale of their ambitions. Rather than focusing on what they term “intermediate milestones” like building smaller proof of concept systems, PsiQuantum builds the first large-scale, error-corrected computer, using photonics to deliver over 1,000,000 qubits (current quantum machines have yet to cross the 1,000 qubit mark).
There are plenty of companies building quantum computers, including the likes of IBM and Google, but these prototypical machines lack the size to correct errors, making them exponentially less useful than what PsiQuantum aims for. While other companies operate in the same sphere, PsiQuantum is unequivocally a leader in its field, founded by world-class academics and recently securing $1B in funding, making it the largest funding round for a quantum computing startup.
Steph
Company Specialist at Welcome to the Jungle
Insights
16% employee growth in 12 months
Company
Funding (last 2 of 8 rounds)
Jun 2025
$1bn
GROWTH EQUITY VC
Apr 2025
$0.6m
GRANT
Total funding: $2.7bn
Company benefits
- Financial & Retirement: 401(k) with company match, equity grants, and access to financial wellness tools and planning resources.
- Health: Competitive health coverage for you and your dependents that go beyond your standard medical, dental & vision.
- Wellness: $200 quarterly health reimbursement, 12 therapy + 6 coaching sessions with Modern Health for you and depndents, and annual membership to Care.com.
- Time Off: Discretionary Time Off (DTO) for full-time employees in addition to federal holidays and an end-of-year company shut-down.
- Family Leave: 12 weeks of paid parental leave with the support of a dedicated leave consultant.
- Flexible WOrk: Work in office, hybrid, or remote depending on your team and location.
Company HQ
Palo Alto, CA
Leadership
Jeremy O'Brien
(Co-Founder & CEO)Prior to founding PsiQuantum, researched and taught at universities across the world, including Bristol, Stanford, Osaka, Sydney and Queensland.
Mark Thompson
(Co-Founder & Chief Technologist)Previously worked as an R&D Engineer at Toshiba and was a research fellow at the University of Cambridge. Is currently a Professor of Quantum Photonics at Bristol University as well as Chief Technologist at PsiQuantum.
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