Postes à Caen, France

Advance practical quantum computing through robust, production‑grade software.

Haiqu is building a world-leading software platform that enables previously impossible applications on modern quantum processors. Our full-stack approach has shown industry-first results in pilots with leading quantum early adopters. Backed by top investors, we offer a unique opportunity to join a fast-growing team and shape the development of the Quantum Computing software stack, allowing researchers and engineers to build meaningful applications without worrying about low-level intricacies.

• Design and implement the hybrid quantum‑classical workflow orchestration. Integrate advanced error‑mitigation techniques, develop novel quantum application primitives, and optimize system performance (including low-level implementations where necessary).
• Extend and maintain Haiqu’s SDK, developer tools, APIs, and backend systems to deliver a seamless and robust quantum development experience.
• Develop and optimise circuit transpilation and mapping strategies tailored to the constraints of multiple quantum hardware back‑ends.
• Build and maintain hardware‑integration layers for a growing set of quantum providers.
• Evolve our cloud infrastructure, CI / CD pipelines, and monitoring to ensure secure, scalable, and reliable system performance.
• Write thorough tests, benchmarks, and documentation to maintain code quality and reproducibility across the stack.

• Basic quantum transpiler knowledge, such as :
• Quantum circuit optimization
• Gate decomposition and mapping
• DAG structures and graph manipulation
• Basis gate sets and device-specific transformations
• Experience working close to quantum hardware APIs. Experience of API-level interaction and understanding of device-specific properties (e.g., coherence times, gate fidelities, execution queues)

• Strong experience in Python and modern software engineering practices
• Be comfortable with low-level programming when needed (e.g. C++, Rust, C)
• Strong software engineering background, including :
• Design patterns
• Data structures and algorithms
• API design (REST)
• Working with databases (SQL and NoSQL)
• Writing documentation and integration tests
• Understanding of functional programming concepts (e.g. monoids, composition, higher-order functions)
• Familiarity with quantum computing concepts such as :
• Quantum circuits
• Measurements, observables
• Noise channels
• Error mitigation
• Error-correction
• Quantum Machine Learning
• Prior exposure to quantum SDKs (e.g., Qiskit, Cirq, PennyLane) and Quantum simulators.
• Hands-on experience with DevOps and infrastructure tools :
• Docker
• Cloud environments (GCP and AWS)
• CI / CD workflows

Comfortable working remotely and asynchronously across time zones

We offer competitive compensation with significant equity and benefits. Join a diverse, flexible workplace building the future of quantum computing.