Staff Software Engineer - IAM, Cloud Platform

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.  

We don’t just build the world’s best quantum computers—we sell them! We make our systems available via the cloud for customers all over the world, customers who have complex organizations and customer bases of their own in many cases. 

We are looking for a Staff Software Engineer to lead developing our Identity and Access Management (IAM) and Role-Based Access Control (RBAC) systems, enabling our customers to federate their own identities and protect their organizations’ data. You’ll lead key components of the platform in collaboration with our product team and other engineers, to build the best quantum platform for our customers and partners.

• Bachelor's degree in Computer Science, Engineering or a related field, or equivalent training, fellowship, or work experience
• 8+ years of professional software engineering experience, with a history of technical leadership and shipping large-scale, mission-critical systems
• Deep, expert-level knowledge (4+ years) on designing, building, and operating IAM and RBAC systems in production environments at scale
• Past experience implementing SAML 2.0 in production
• Proven experience designing and leading large-scale, cross-team technical projects from inception to completion, especially track record of leading cross-team initiatives related to identity, access control, or security platforms
• Solid understanding of microservices architecture, event-driven systems, and data consistency patterns.
• Exceptional written and verbal communication skills, demonstrated through a portfolio of technical design documents, architectural diagrams, or public presentations
• Expertise programming backends in Go or JavaScript
• A strong sense of ownership and the ability to navigate ambiguity to drive complex projects forward with a high degree of autonomy
• A practice of using AI in day to day coding

• 10+ years software developer experience
• 5+ years experience writing microservices in a kubernetes environment
• Past experience with GCP
• Experience evolving or migrating legacy authentication/authorization systems to modern, scalable architectures
• Deep familiarity with enterprise security requirements, including least privilege, auditability, and compliance constraints
• Experience operating IAM systems that support high availability, low latency, and strict reliability SLOs
• Active participation in the broader tech community (e.g., open-source contributions, conference talks)
• Regular use of fully agent-based augmented coding

If you are interested in being a part of our team and mission, we encourage you to apply!