Senior Electrical 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.

Our Control Electronics team designs every custom electronic assembly inside an IonQ quantum computer. The work is the control electronics that sit around the trap, and it is genuinely multidisciplinary: precision analogue, RF, mixed signal DAC and ADC design, FPGA and high speed logic layout, and the signal and power integrity that decide whether any of it works at the speeds we need.

This is a board level design role, not silicon. You would split your time roughly evenly between design and simulation on one side and the bench on the other, because the team’s instinct is to build something physical and measure it rather than model it indefinitely. Some of what we are trying to make has to be better than we currently know how to measure it, which is the part most engineers find either alarming or irresistible.

You would own custom board designs from schematic capture and simulation through to a working prototype on the bench, characterising them with a wide range of test and measurement equipment, from oscilloscopes to