Staff Software Engineer

Quantum computing holds the promise of humanity's mastery over the natural world, but only if we can build a real quantum computer. PsiQuantum is on a mission to build the first real, useful quantum computers, capable of delivering the world-changing applications that the technology has long promised. We know that means we will need to build a system with roughly 1 million qubits that supports fault tolerant error correction within a scalable architecture, and a data center footprint.

By harnessing the laws of quantum physics, quantum computers can provide exponential performance increases over today's most powerful supercomputers, offering the potential for extraordinary advances across a broad range of industries including climate, energy, healthcare, pharmaceuticals, finance, agriculture, transportation, materials design, and many more.

PsiQuantum has determined the fastest path to delivering a useful quantum computer, years earlier than the rest of the industry. Our architecture is based on silicon photonics which gives us the ability to produce our components at Tier-1 semiconductor fabs such as GlobalFoundries where we leverage high-volume semiconductor manufacturing processes, the same processes that are already producing billions of chips for telecom and consumer electronics applications. We also benefit from the quantum mechanics reality that photons don't feel heat or electromagnetic interference, allowing us to take advantage of existing cryogenic cooling systems and industry standard fiber connectivity.

In 2024, PsiQuantum announced two government-funded projects to support the build-out of our first Quantum Data Centers and utility-scale quantum computers in Brisbane, Australia and Chicago, Illinois. Both projects are backed by nations that understand quantum computing's potential impact and the need to scale this technology to unlock that potential. And we won't just be building the hardware, but also the fault tolerant quantum applications that will provide industry-transforming results.

Quantum computing is not just an evolution of the decades-old advancement in compute power. It provides the key to mastering our future, not merely discovering it. The potential is enormous, and we have the plan to make it real. Come join us.

There's much more work to be done and we are looking for exceptional talent to join us on this extraordinary journey!

Job Summary:

Join our Quantum Architecture Simulation Operations team to accelerate research and development by building the tools, services, and systems that bridge research with production-grade engineering.

Responsibilities:

• Design and implement core developer tooling, services, and APIs that accelerate R&D productivity

• Build automation and CI/CD pipelines that improve reliability and shorten feedback loops

• Partner with researchers to translate prototypes into maintainable, well-tested software

• Develop internal libraries and frameworks to unify workflows

• Establish best practices in code quality, testing, and documentation for a growing engineering team

• Investigate and address technical bottlenecks, ensuring systems are performant, scalable, and maintainable

• Troubleshoot complex problems and incidents, working with cross-functional teams and end-users to identify root causes.

Experience/Qualifications:

• Bachelor's Degree or higher in Computer Science, Engineering or other related technical field.

• 10+ years of professional software engineering experience, with strong background in system design and performance optimizations

• Expert-level in modern Python

• Proficient in at least one other language, specifically C++, Rust or Go

• Experience building out end-to-end platforms, particularly in data-heavy environments

• Hands-on experience with modern CI/CD workflows, containers (Docker), and HPC (Slurm)

• Familiarity with cloud environments (AWS) and infrastructure-as-code tools (Ansible, Terraform)

• Proven ability to work closely with subject matter experts, data analysts, or other non-traditional software stakeholders

• Excellent communication, problem-solving, and cross-team collaboration skills

PsiQuantum provides equal employment opportunity for all applicants and employees. PsiQuantum does not unlawfully discriminate on the basis of race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), gender identity, gender expression, national origin, ancestry, citizenship, age, physical or mental disability, military or veteran status, marital status, domestic partner status, sexual orientation, genetic information, or any other basis protected by applicable laws.

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

We are not accepting unsolicited resumes from employment agencies.

The ranges below reflect the target ranges for a new hire base salary. One is for the Bay Area (within 50 miles of HQ, Palo Alto), the second one (if applicable) is for elsewhere in the US (beyond 50 miles of HQ, Palo Alto). If there is only one range, it is for the specific location of where the position will be located. Actual compensation may vary outside of these ranges and is dependent on various factors including but not limited to a candidate's qualifications including relevant education and training, competencies, experience, geographic location, and business needs. Base pay is only one part of the total compensation package. Full time roles are eligible for equity and benefits. Base pay is subject to change and may be modified in the future.

U.S. Base Pay Range

$190,000-$215,000 USD

Bay Area Pay Range

$220,000-$245,000 USD