Full-Time
Senior Software Engineer
Quantum Compiler
Posted on 11/7/2025
Quantum Circuits
11-50 employees
Develops full-stack superconducting quantum platform
No salary listed
H1B Sponsorship Available
New Haven, CT, USA
Hybrid
Remote option exists but not guaranteed; position may be hybrid with in-office discussions in New Haven, CT.
 Software Engineering (1) |
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- Minimum MS or higher in Computer Science, Electrical/Computer Engineering, Math, Physics, or Chemistry.
- Minimum 5+ years of hands-on software development experience with C, C++, Python, or another general-purpose programming language.
- Minimum 2+ years developing compiler software / transpiling quantum models and using API’s such as Qiskit, CUDA-Q, Q#, or Cirq to convert quantum circuits into quantum logic and basis gates.
- Strong understanding of compiler design fundamentals.
- Experience with intermediate representations such as QIR and compiler toolchain technologies including LLVM, MLIR, lexers, and parsers.
- Experience programming with one or more high level quantum programming languages and/or models such as Qiskit, CUDA-Q, Q#, Cirq, etc.
- Proficient with database systems and SQL with hands-on experience working with relational databases (e.g. PostgreSQL, Oracle).
- Competence with Git version control, build tools, and CI/CD pipelines.
- Use of software testing principles and practices, including unit testing, integration testing, and end-to-end testing.
- Strong problem-solving skills, attention to detail, and the ability to work effectively in a collaborative team environment.
- Excellent communication and interpersonal skills with the ability to effectively communicate complex technical concepts.
- Collaborate with product managers, scientists, and other engineers to translate functional requirements into technical specifications and deliverables.
- Work directly with quantum application engineers and quantum physicists to understand how to convert general quantum circuits into an implementation on our industry-leading dual-rail qubit architecture.
- Architect and build efficient, reliable, and maintainable compiler software and tools.
- Write clean, well-documented code and conduct thorough code reviews to ensure code quality and maintainability.
- Troubleshoot and debug issues, identify bottlenecks, and implement solutions to optimize performance and improve the user experience.
- Provide software mentorship and guidance to quantum physicists on best practices and help drive software best practices.
- Remote or hybrid position based in New Haven, CT to be discussed with the candidate.
- Sponsorship available.
- PhD in Computer Science, Electrical/Computer Engineering, Math, Physics, or Chemistry.
- Minimum 7+ years of hands-on software development experience with C, C++, Python, or another general-purpose programming language.
- Minimum 5+ years developing compiler software / transpiling quantum models and using APIs such as Qiskit, CUDA-Q, Q#, or Cirq to convert quantum circuits into quantum logic and basis gates
- Minimum 2+ years directly programming with one or more high level quantum programming languages and/or models such as Qiskit, CUDA Quantum, Q#, etc.
- Experience in scientific computing, quantum physics, or quantum computing a plus.
- Experience developing toolkits, compilers, or runtime environments for heterogenous architectures.
- Experience with ahead-of-time and just-in-time compilation for quantum computing.
- Experience with embedded systems, algorithms, and/or low-level control software for hardware a plus.
- Experience with multi-threaded programming, execution, and HPC architectures.
- Experience with meta programming languages.
Quantum Circuits is building a full-stack quantum computing platform based on superconducting qubits, designed to be modular and scalable. The system blends superconducting processors with built-in error correction and a modular architecture, plus software features that speed up quantum algorithm execution and support multiple operation modes. Its approach differentiates it by offering an integrated, error-corrected platform with diverse operation modes, built on Yale-developed research. The goal is to deliver a truly useful, scalable quantum computer capable of solving real-world problems.
Company Size
11-50
Company Stage
Acquired
Total Funding
$654.5M
Headquarters
New Haven, Connecticut
Founded
2015
Simplify's Take
What believers are saying
- D-Wave's $550M acquisition accelerates 2026 gate-model QPU launch.
- NVIDIA CUDA-Q integration enhances hybrid quantum-classical workflows.
- Algorithmiq partnership speeds drug discovery via Aqumen Seeker.
What critics are saying
- Talent exodus post-acquisition delays gate-model launch by 6-12 months.
- D-Wave's annealing priority stalls dual-rail commercialization versus IBM.
- IonQ's trapped-ion qubits surpass dual-rail fidelity in 18-24 months.
What makes Quantum Circuits unique
- Quantum Circuits pioneers dual-rail qubits with built-in error detection.
- Yale spinout leverages Dr. Rob Schoelkopf's expertise in superconducting qubits.
- Aqumen Seeker advances fault-tolerant quantum computing path.
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Benefits
Remote Work Options
Hybrid Work Options
Growth & Insights and Company News
6 month growth
↑ 40%1 year growth
↑ 46%2 year growth
↑ 46%D-Wave Quantum Inc. (NYSE: QBTS) (“D-Wave” or the “Company”), a leader in quantum computing systems, software, and services, and the world’s first commercial...
D-Wave Quantum (QBTS) stock holding steady on $550 million Quantum Circuits acquisition. D-Wave Quantum Inc. (QBTS) is making waves in the quantum computing sector, with its stock price holding fairly steady following the announcement of a definitive agreement to acquire Quantum Circuits Inc. for $550 million. The deal, coupled with a recent breakthrough in gate-model quantum computing, has positioned D-Wave as a key player in the burgeoning quantum technology landscape.
Quantum Circuits, Inc. (QCI) has announced a collaboration with NVIDIA to integrate NVIDIA CUDA-Q programming capabilities into its Aqumen software suite.
Algorithmiq, a European quantum algorithm company focused on life sciences, is partnering with Quantum Circuits, Inc. to enhance drug discovery using the full-stack quantum computing system Aqumen Seeker.
Last year, Quantum Circuits announced a $60 million Series B round and the launch of Aqumen Seeker.