Staff QA Software Engineer

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.

Location: This role is based at our Santa Clara, CA office, with the option to work a few days a week remotely.

We're hiring a QA Engineer to own quality for our SaaS-based Quantum Security Posture Management platform. This role is focused on rigorous, product-level testing — functional correctness, regression coverage, and automation — for a platform that models Layer 2/Layer 3 networks and evaluates security posture. You'll work closely with developers to catch defects early and build confidence in every release.

• Design, write, and execute detailed test cases and test plans for platform features: network discovery, topology mapping, policy/rule analysis, posture scoring, alerting, and reporting.

• Perform functional, regression, integration, and API testing across releases and sprints.

• Validate correctness of Layer 2/Layer 3 network modeling (VLANs,