Senior Software Developer - Qiskit

Qiskit is IBM Quantums flagship opensource software development kit for quantum computing, enabling the development, compilation, and execution of quantum programs for a broad community of researchers, developers and industry partners. As part of IBM Quantum, the Qiskit SDK team is building the foundations of a highperformance, open, and platformneutral quantum compiler and SDK, with the longterm vision of becoming the standard library and toolchain for quantum computing. Qiskit emphasizes productiongrade quality and performance, offering a platform with Python and C APIs and a design that accommodates future language bindings. We are looking for an experienced Software Developer to join the core Qiskit SDK team. In this role, you will work at the intersection of systems programming, compiler infrastructure, and opensource development, contributing to software that shapes the future of quantum computing. You will be a core contributor to the Qiskit SDK and its underlying compiler and runtime infrastructure, designing and implementing performancecritical components, evolving public APIs, and collaborating closely with researchers, product teams and the opensource community. The role requires a strong sense of software ownership, technical rigor, and opensource best practices. Key Responsibilities * Design, implement, and maintain core Qiskit SDK components and APIs. * Develop highquality, welltested, performancecritical code, with strong attention to usability, extensibility, and backward compatibility. * Contribute to compiler and transpilation infrastructure, including IRs, optimization passes, and compilation pipelines. * Review and mentor contributions from internal engineers and external opensource contributors. * Participate actively in opensource workflows, including design discussions, code reviews, documentation, and releases. * Collaborate closely with research, HPC, hardware, and product teams, and support external users and partners. * Debug and resolve complex issues across a large, evolving codebase.