Senior Software Engineer - Test Infrastructure

The posting, as IonQ wrote it

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.

Location: This role is based out of our College Park, Boulder, CO, or Bothell, WA offices. We offer a hybrid work model, allowing for remote work a few days per week.
Travel: Up to 10%, domestic or international.
Job ID: 1791

The Role

We are looking for a Software Engineer - Test Infrastructure to join our Release Engineering team. You'll be part of a cross-functional team whose mission is to lead IonQ on its journey to build the world's best quantum computers to solve the world's most complex problems.

In this role, you will own the quality signal for the integrated software that runs IonQ’s quantum computers. You will design and operate the automated testing that validates complete systems — from customer-scale circuit execution to the tools used to operate and calibrate the machines — on shared test environments that are themselves real quantum computing systems. You will build the CI infrastructure that catches integration problems early, set system-level test strategy, and manage the test system fleet that makes all of this possible, partnering daily with software, hardware, and physics teams.

The ideal candidate is a curious, collaborative engineer who is drawn to hardware-software integration testing, thinks in terms of coverage and infrastructure rather than individual test cases, and is comfortable defining the right test signal for first-of-their-kind systems.

Responsibilities

• Own end-to-end integration testing of our system software: design, develop, and maintain the automated test suites that validate complete quantum computing systems on shared test environments, including circuit execution under realistic customer workloads.
• Extend automated test coverage of operator-facing tooling and workflows, exercising the interfaces engineers and physicists use to operate and calibrate systems.
• Design, build, a

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status, age, sexual orientation, military or veteran status, or any other basis protected by law. We are proud to be an Equal Employment Opportunity employer.

US Technical Jobs. The position you are applying for will require access to technology that is subject to U.S. export control and government contract restrictions. Employment with IonQ is contingent on either verifying “U.S. Person” (e.g., U.S. citizen, U.S. national, U.S. permanent resident, or lawfully admitted into the U.S. as a refugee or granted asylum) status for export controls and government contracts work, obtaining any necessary license, and/or confirming the availability of a license exception under U.S. export controls. Please note that in the absence of confirming you are a U.S. Person for export control and government contracts work purposes, IonQ may choose not to apply for a license or decline to use a license exception (if available) for you to access export-controlled technology that may require authorization, and similarly, you may not qualify for government contracts work that requires U.S. Persons, and IonQ may decline to proceed with your application on those bases alone. Accordingly, we will have some additional questions regarding your immigration status that will be used for export control and compliance purposes, and the answers will be reviewed by compliance personnel to ensure compliance with federal law.

US Non-Technical Jobs. Due to applicable export control laws and regulations, candidates must be a U.S. citizen or national, U.S. permanent resident (i.e., current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum. Accordingly, we will have some additional questions regarding your immigration status that will be used for export control and compliance purposes, and the answers will be reviewed by compliance personnel to ensure compliance with federal law.

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