PsiQuantum
psiquantum.com
Actively hiring
Quantum Science & Computing
Quantum Computing Hardware
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Technologies
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Products
People
Growth
Offices
Jobs
Financials
Funding and backers
Total raised
$1.5B
3 rounds on record
Latest round
$1B
Series E · Sep 2025 · 13 mo ago
Team
484
US Form 5500 (plan participants) · Dec 2025 · +44% in a year
Hiring now
74
+17 posted in 30 days
Backers
9
C4 Ventures, Founders Fund
The money's age
Due for its next round
13 months since the last round · and hiring
Momentum
34/100
hiring for its size, a new city, in the news
Last sign of life
this month
a posting or a news item
The story so fareach stage dated by its source: the company's releases, the press, registers, filings
Aug 11
First sales or marketing role Senior Director, U.S. National Security Partnerships
Jul 13
First executive search Director, Investor Relations
May 8
First role in United Kingdom Senior Photonics Engineer, Optical Interfaces
2025
Team of 484 was 335 · US Form 5500 (plan participants)
Sep 11, 2025
Raised a round Series E $1B · Quantum Computing Report
May 15, 2025
Raised a round Venture round $22M · SEC Form D
Jul 27, 2021
Raised a round Venture round $450M
2016
Founded
Tractionpublic signals, read monthly
Web presence
top 0.06%
of 133.2M domains by links, Common Crawl
Hacker News stories
2
best: 1 points
Funding rounds
| Round | Date | Amount | Investors | Source |
|---|---|---|---|---|
| Series E | Sep 2025 | $1B | Temasek, Baillie Gifford | Quantum Computing Report |
| Venture round | May 2025 | $22M | — | SEC Form D |
| Venture round | Jul 2021 | $450M | — | wsj.com |
Registers and programsofficial lists and records that name the company
| Legal entity | PsiQuantum, Corp. | SEC Form D |
Founders and leadersfrom filings, registers and the company's site
Jeremy O'BrienExecutive Officer, DirectorSEC Form D
Backed byfrom the funds' portfolios and accelerator catalogs
C4 Ventures 
Founders Fund 
FPV Ventures 
IPO Club 
Meta Planet 
Playground 
Redpoint Ventures 
SciFi VC 
Type One Ventures Investors in similar startupsfunds that back the companies most like this one
Similar startupsby what they do, their industry and backers
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How PsiQuantum hires
Truth index
A 91/100
Median time to fill
106 days
Ghost roles
7%
Stale roles
0%
Reposted roles
0%
PsiQuantum scores A on the Alion truth index (A is best, E worst), measured over 72 open roles re-checked against its own hiring board: 7% look like ghost listings, 0% have gone stale and 0% are the same role posted again. Its roles close in a median of 106 days. It measures how much of what this employer publishes turns into a real, finite search - not the employer as a workplace. How the index is computed
Visa sponsorship
- United States · H-1B filings in 12 months: 23
- United Kingdom · Licensed UK visa sponsor (Senior or Specialist Worker, Skilled Worker)
Overview
PsiQuantum is a quantum computing company headquartered in Palo Alto, California, that is building fault-tolerant, million-qubit quantum computers based on photonic qubits made with standard silicon photonics semiconductor manufacturing. Founded in 2016, it develops hardware in Palo Alto and Milpitas, is building utility-scale sites in Brisbane, Australia, and Chicago, and has a UK team at Daresbury, backed by government awards including US Department of Commerce funding. It hires optical packaging and fiber optics engineers, cryogenics engineers, photonics validation leads, quantum application architects, datacenter architects, business development leads and recruiters.
News
PsiQuantum Finalizes $100 Million U.S. Department Of Commerce Award
PsiQuantum has finalized definitive documentation with the U.S. Department of Commerce for a $100 million federal research and development award intended to strengthen U.S. quantum computing capabilities and semiconductor supply-chain security.
Read more
Report
PsiQuantum has a plan to make a massive quantum computer out of light
The company has drawn governments, a major chipmaker, and the Pentagon into an effort to control fragile photons and build a useful quantum machine. It aims to be the first.
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Report
PsiQuantum Aims for a Million Qubits by 2027
PsiQuantum aims for a million qubits by 2027. Can their optical quantum computer outpace competitors with silicon photonics?
Read more
Report
PsiQuantum Raises $1 Billion to Build Fault-Tolerant Quantum Computers, Announces Collaboration with NVIDIA
PsiQuantum has announced that it has raised $1 billion in Series E funding, which values the company at $7 billion. The funding round was led by funds and accounts managed by affiliates of BlackRock, along with Temasek and Baillie Gifford. New investors i
Read more
Report
PsiQuantum valued at $7 billion in latest funding round, teams up with Nvidia
The Series E funding round was led by investment firms BlackRock, Temasek and Baillie Gifford and saw participation from new investors including Nvidia's venture capital arm NVentures, Macquarie Capital and Ribbit Capital. PsiQuantum said the funding will
Read more
Report
Nvidia in advanced talks to invest in PsiQuantum, The Information reports
Nvidia and PsiQuantum declined to comment on the report. Reuters reported in March that PsiQuantum is raising at least $750 million from investors including BlackRock at a $6 billion pre-money valuation. Quantum technology has the potential to perform typ
Read more
Report
Australia is bankrolling a $1b quantum computer in Brisbane. Big corporations will use it first
Australia is making a billion-dollar bet on a "useful" quantum computer in the Queensland capital, but surprisingly few experts agree on what the nation will get in return for its investment.
Read more
Report
Former South Works Site Could Become Quantum Computing Campus By 2027, Officials Say
The former steel mill was picked to host a multibillion-dollar quantum development park anchored by Silicon Valley startup PsiQuantum, which pledges 150 jobs. Neighbors want to ensure they benefit from the massive project.
Read more
Report
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Tech stack
Technologies named in job postings at PsiQuantum over the last 12 months, by layer, with the share of postings for each.
Technologies in use
48
Postings analysed
45
Stack modernity
68/100
Languages
Python84%
C++22%
MATLAB16%
SystemVerilog11%
Frameworks & libraries
CUDA4%
ROCm4%
MPI4%
Cocotb2%
Databases
Neo4j2%
Cloud & platforms
CUDA Toolkit4%
GitLab4%
Linux4%
RTOS4%
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Full PsiQuantum tech stack
48 technologies · by team · pay by technology · changes · similar stacks
Salary insights
Compensation ranges based on this company's open jobs
Median
$197k
Typical range
$74k – $318k
Open positions
57
46
Jobs
Junior
2.2%
Middle
4.3%
Senior
50%
Staff
26.1%
Principal
6.5%
Architect
10.9%
| Level | Jobs | Median | Typical range |
|---|---|---|---|
| Junior | 1 | $74k | $74k |
| Middle | 2 | $137k | $125k – $149k |
| Senior | 23 | $197k | $101k – $282k |
| Staff | 12 | $241k | $140k – $277k |
| Principal | 3 | $245k | $220k – $277k |
| Architect | 5 | $257k | $123k – $318k |
Highest paying role
Director, Electro-Optical Validation
$318k
Normalized to USD per year
All salaries at PsiQuantum
By role, level and city, against the market · 57 jobs with pay
People
Jeremy O'Brien
Executive Officer, Director
Siraj Khaliq
Director
Faye Pairman
Director
Pete Shadbolt
Director
Aaron VanDevender
Director
Peter Barrett
Director
Jeff Brody
Director
Names and roles come from public filings, company registers and the company's own site. Is this you? Correct or remove · How we handle this data
Growth
Hiring Momentum
71/100
Growing
Open positions
74
12 opened / 9 closed in 30 days
Median time-to-fill
62 days
faster than 21% of the market
ATS activity
Every ~4 hours
Today
Hiring Dynamics
+100%
Hiring Focus
The percentage next to each role is its share of the company's job openings over the last 90 days; the arrow shows the shift versus the previous period.
Industrial Engineering
26% ▲
Hardware
13% ▲
Quantum
13% ▲
Finance
7% ▼
Management
7%
QA
4% ▼
Actively hiring for Industrial Engineering (+7 in 30 days)
Activity Timeline
Added Material Design to stack
Oct 2026
Added AI Agents to stack
Oct 2026
New location: Daresbury
Sep 2026
New location: Washington
Sep 2026
New location: Chicago
Sep 2026
New location: Brisbane
Sep 2026
Added C to stack
Sep 2026
Added ROCm to stack
Sep 2026
Added MPI to stack
Sep 2026
Added HPC to stack
Sep 2026
Added Fortran to stack
Sep 2026
Added CUDA Toolkit to stack
Sep 2026
Offices
Where the company hires and what each office is for
Cities
17
Hiring now
8
Countries
8
Busiest office
Palo Alto
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Headquarters
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Palo Alto
United States
HQ
Palo Alto, California, United States
24 open roles 13 posted in 90 days 42% engineering 13% remote 10-50 est. staff $192k Avg Salary
hires for Hardware, Industrial Engineering, Quantum
Milpitas
United States
Plant / site
Milpitas, California, United States
37 open roles 21 posted in 90 days 43% engineering 50-200 est. staff $207k Avg Salary
hires for Industrial Engineering, Hardware, Quantum
Daresbury
United Kingdom
Plant / site
Daresbury, England, United Kingdom
7 open roles 2 posted in 90 days 29% engineering 14% remote 1-10 est. staff $95k Avg Salary
hires for Industrial Engineering, Hardware, Quantum
Brisbane
Australia
Engineering / R&D
Brisbane, Queensland, Australia
6 open roles 5 posted in 90 days 17% engineering 33% remote 1-10 est. staff
hires for Early Careers, Administrative, Finance
Albany
United States
Engineering / R&D
Greater, Albany, New York
2 open roles 2 posted in 90 days 50% engineering 1-10 est. staff $121k Avg Salary
hires for QA, Field & Service
Washington
United States
Regional office
Washington, District of Columbia, United States
1 open roles 1 posted in 90 days 1-10 est. staff $282k Avg Salary
hires for Sales
Chicago
United States
Regional office
Chicago, Illinois, United States
1 open roles 1 posted in 90 days 1-10 est. staff $243k Avg Salary
hires for Sales
Singapore
Singapore
Engineering / R&D
Singapore
1 open roles 1 posted in 90 days 1-10 est. staff
hires for Industrial Engineering
Tokyo
Japan
Regional office
Tokyo Prefecture, Japan
Berlin
Germany
Regional office
Berlin, Berlin, Germany
Brussels
Belgium
Regional office
Brussels, Brussels-Capital, Belgium
San Jose
United States
Regional office
San Jose, California, United States
Minneapolis
United States
Regional office
Minneapolis, Minnesota, United States
Boston
United States
Regional office
Boston, Massachusetts, United States
Bristol
United Kingdom
Regional office
Bristol, England, United Kingdom
Leiden
Netherlands
Regional office
Leiden, South Holland, Netherlands
Arlington
United States
Regional office
Arlington, Virginia
Jobs
$208k – $245k per year • Equity • In office • Full-Time • Bachelor's Degree • Milpitas
Python
C++
RTOS
Linux
TCP/IP
Apply
$208k – $245k per year • Equity • In office • Full-Time • Bachelor's Degree • Milpitas
Python
C++
RTOS
Linux
Apply
$271k – $318k per year • Equity • In office • Full-Time • 10+ years exp • Bachelor's Degree • Milpitas
Apply
$208k – $245k per year • Equity • In office • Full-Time • 10+ years exp • Master's Degree • Milpitas
Python
AI Agents
DevOps
Git
Apply
$182k – $214k per year • Equity • In office • Full-Time • Milpitas
Apply
$240k – $281k per year • Equity • In office • Full-Time • Master's Degree • Milpitas
Apply
$177k – $207k per year • Equity • In office • Full-Time • 7+ years exp • Master's Degree • Milpitas
Apply
$140k – $164k per year • Equity • In office • Full-Time • PhD • Palo Alto
Python
Apply
$177k – $207k per year • Equity • In office • Full-Time • 2+ years exp • Master's Degree • Palo Alto
Apply
$105k – $123k per year • In office • Full-Time • 5+ years exp • PhD • Daresbury
Python
C++
Apply
$165k – $185k per year • In office • Full-Time • 7+ years exp • Bachelor's Degree • Palo Alto
Python
Go
Java
Rust
C++
Databricks
DevOps
Rest API
gRPC
CI/CD
Docker
Kubernetes
GitLab
Analytics
Tableau
Apply
$168k – $197k per year • Equity • In office • Full-Time • 5+ years exp • Master's Degree • Milpitas
Python
Apply