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Quantum Applications Software Developer

PsiQuantum

Salary not specified
Oct 7, 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 involves 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, needing tools to drive the development of quantum applications for solving the world's most pressing problems.

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.