Staff/Principal Software Engineer, PsiQuantum
Control
$180-230k
+ Equity. Salary dependent on location
Quantum computer builder
Open for applications
Quantum computer builder
501-1000 employees
Open for applications
$180-230k
+ Equity. Salary dependent on location
501-1000 employees
Company mission
To build and deploy useful, fault tolerant quantum computers.
Role
Who you are
- 15+ years experience with Rust or C++ in a system software context
- Architecture and implementation of system software for HPC, robotics, AI, quantum computing, semiconductor fabrication, or control systems
- 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 high performance computing
- Experience in computer architecture
- Experience in high performance networking
- Experience building operating systems, compilers, or kernels
- Experience interfacing with ASICs and/or FPGAs in complex/high-performance systems or an edge-computing context
- Experience with Nix
- Experience with highly scalable distributed systems in a reliability and up-time critical environment
- Familiarity with quantum control
- PhD in a related technical discipline is a plus, but not required
What the job involves
- Develop and implement software for control of photonic quantum computers in Rust
- Design and architecture of system software
- Participate in design and code reviews
- Collaborate across software, hardware, and research teams at PsiQuantum
- Testing and maintenance of control 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 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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