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Quantum Applications Software Developer

PsiQuantum

$140,000 - $185,000
Oct 16, 2025
Palo Alto, CA, US
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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. This requires building a system with roughly 1 million qubits that supports fault tolerant error correction within a scalable architecture, and a data center footprint. The applications team is focused on algorithms in the fault tolerant regime and is tightly integrated with quantum architecture development.

Requirements

  • Practical experience in quantum computing, programming quantum applications, or quantum circuit compilation.
  • 5+ years professional experience programming and releasing production code in Python, C++, or similar languages.
  • Experience with quantum algorithms or compiling in the regime of fault tolerant gates preferred.
  • Experience with deployment of code in distributed environments, cloud application development, and RESTful API-driven architectures.

Responsibilities

  • Lead the design, development, and deployment of quantum applications software tools to support both internal and external users.
  • Maintain, service and upgrade a high-quality codebase supported by a fast and reliable simulation infrastructure.
  • Work closely with internal and external partners and other members of the quantum applications team to design, implement and analyze quantum algorithms for real-world use cases.
  • Assist with full system analysis to evaluate and optimize resource requirements for fault tolerant computations.
  • Assist with the optimization of quantum algorithms at the subroutine, circuit, and compiled gate-set level.

Other

  • Graduate degree in Physics, Math, or Computer Science or equivalent required (MSc or PhD).
  • A results-driven “doer”, preferably with experience in a high-throughput, rapid-delivery work environment.
  • A problem solver, with an analytical mindset.
  • Proven team player with an ability to work effectively across departments, sites, and time zones.
  • Ability to work independently and contribute in fast-moving start-up environment.