Quantum Network Support Engineer

IonQ, Inc. 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.

IonQ builds quantum network data centers as a distinct product line, providing infrastructure that enables researchers and customers to run distributed quantum experiments. We're looking for a Quantum Network Support Engineer to join our team supporting these networks once they're built and handed off.

This role can be hands-on. You'll work with fiber optics, photon detectors, interferometers, and other quantum network hardware in both lab and datacenter environments. You'll also work directly with customers, helping translate their experimental needs into working network topologies. Candidates with backgrounds in photonics, fiber optics, optical engineering, or physics are encouraged to apply. The role normally involves about 25% travel to customer sites, including international travel.

Commissioning phases may require longer continuous periods on site.

This role is based onsite at our office in Chattanooga, TN and can work remotely up to 3 days per week.

Normally about 25% to customer sites, including international travel; longer continuous on-site periods during commissioning.

• Maintain quantum network hardware, including fiber interconnects, passive optical components, and control electronics in datacenter rack environments.
• Assist in commissioning new quantum network deployments at customer sites, including extended on-site assignments as networks come online.
• Characterize network performance after changes using instruments such as OTDRs, power meters, polarimeters, and photon detectors.
• Respond to support tickets to troubleshoot network faults: trace logical and physical signal paths, isolate root causes, resolve issues or implement workarounds, and communicate changes to affected customers.
• Consult with researchers and customers on network topology design: translating experimental requirements into loss-budgeted fiber path plans that account for distance, polarization, and timing constraints.
• Document network configurations, characterization data, and procedures in a clear and accessible way.

• Bachelor's degree in physics, optics, electrical engineering, or a related science.
• Hands-on comfort with fiber optic handling: connectors, cleaning, and slack management.
• Familiarity with basic networking concepts: IP addressing, subnets, interfaces, LAN/WAN.
• Strong written and verbal communication. You'll support users ranging from graduate students to principal investigators across technical and non-technical contexts.
• A systematic troubleshooting mindset. Able to isolate a problem methodically and comfortable saying "I don't know, let me find out."
• Desire…