Principal Software Architect

About this role

About IonQ: IonQ, Inc . [NYSE: IONQ] is the world’s leading quantum platform and merchant supplier - delivering integrated quantum solutions across computing, networking, sensing, and security. IonQ’s newest generation of quantum computers, the IonQ Tempo, is the latest in a line of cutting-edge systems that have been helping customers and partners including Amazon Web Services, and AstraZeneca achieve 20x performance results and accelerate innovation in drug discovery, materials science, financial modeling, logistics, cybersecurity, and defense.

In 2025, the company achieved 99.99% two-qubit gate fidelity, setting a world record in quantum computing performance . Headquartered in College Park, Maryland, IonQ has operations in California, Colorado, Massachusetts, Tennessee, Washington, Italy, South Korea, Sweden, Switzerland, Canada, and the United Kingdom. Our quantum computing services are available through all major cloud providers, while we also meet the needs of networking and sensing customers across land, sea, air, and space.

IonQ is making quantum platforms more accessible and impactful than ever before. Role Overview Role: We are looking for a Principal Software Architect to join our Compute Software organisation at IonQ. In this role, you will be responsible for developing and maintaining the architecture of the software that enables a quantum computer, from low level hardware control up to developer programming interfaces, contributing to the team’s mission of delivering a complete software product for a quantum computer.

You’ll play an important part in shaping the software and tools that support our work in building the world’s most advanced quantum systems. Our architecture now needs to evolve to support the next generation of our systems, and you will lead that work. Responsibilities: In this position, you will develop the software architecture covering real-time and non-real-time hardware management, low level orchestration and user interfaces for the current product and the future roadmap of products.

You will also work with the technical leads from the development teams to support the effective development and delivery of a scalable solution that supports internal experimental scientists and external customers. You’ll have the opportunity to develop an evolving software architecture to support a family of products, contributing directly to the success of the system software team in delivering a world leading quantum computer.