Software Engineer, PsiQuantum
Systems Modelling
$160-180k
Office located in Milpitas, CA
Quantum computer builder
Open for applications
Quantum computer builder
501-1000 employees
Open for applications
$160-180k
Office located in Milpitas, CA
501-1000 employees
Company mission
To build and deploy useful, fault tolerant quantum computers.
Role
Who you are
- 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 in different domains
- Demonstrated interest in PsiQuantum’s mission and vision for quantum computing, with an ability to contribute within a fast-paced start-up environment consistent with PsiQuantum’s values of communication, collaboration, respect, results, and challenge
Desirable
- Familiarity with quantum physics, quantum computing concepts, photonic integrated circuits, digital electronics, fiber networking, or related domains
- Experience with physics modelling
- Experience with data visualization tools such as Tableau, PowerBI, Python Dash, or JMP
- Experience with relational or document-based databases such as: PostgreSQL, SQLite, Mongo, and S3
- Experience with CI/CD tools such as GitLab, GitHub, or Jenkins
What the job involves
- At PsiQuantum we are developing and testing prototype modules which will scale into a datacenter-sized, fault-tolerant quantum computer. Modules, or subsystems, of this computer are designed to generate entangled states of photons that, when scaled up and networked together, collectively enable quantum error correction and quantum algorithms
- The Quantum Systems Validation team is developing and maintaining a set of physical models to represent, characterize, and analyze the performance of our quantum modules
- The Software Engineer, Validation Models will be responsible for building and maintaining software infrastructure that enables the team to capture and analyze system performance data. The successful candidate will work closely with validation engineers to create tools that manage data, create abstractions for system hardware, and interface those to physical modelling tools
- Design and implement software tools that enable physics model development
- Design and implement interfaces between databases and modelling tools to make it easy to apply models to high-volume data captured on large scale tests
- Contribute to developing user interfaces and data visualization tools
- Contribute to code reviews, pair programming, and mentoring, to promote high-quality, well-documented software from contributors from a variety of backgrounds
- Work with validation engineers to develop and maintain hardware abstractions in software
- Develop software tools to manage data interfaces between databases and modelling tools
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 7 rounds)
Jun 2025
$1bn
GROWTH EQUITY VC
Jun 2024
$125m
CONVERTIBLE
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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