Senior Software Engineer - Test Infrastructure

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Senior Software Engineer - Test Infrastructure in USA new

IonQ
Full time
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USA
10/31/2026
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College Park, MD

Responsibilities

Own and maintain automated end-to-end integration test suites for complete quantum computing systems and realistic customer workloads.
Extend automated testing for operator-facing tools and workflows used to operate and calibrate quantum systems.
Design, build, and operate reliable CI infrastructure that detects integration issues before deployment.
Define system-level test strategy, close coverage gaps, and develop performance and electronics-control validation tests.
Triage and report integration-test failures, identify root causes, and provide actionable feedback to responsible teams.
Manage test-system fleet baselines, upgrades, decommissioning, configuration records, and fitness-for-purpose across product lines.
Promote testability through improved interfaces, test hooks, and validation practices across component teams.

Requirements

At least 5 years of professional experience in test infrastructure, software test automation, CI engineering, or a closely related field, or an equivalent combination of education and experience.
Bachelor’s degree in Computer Science, Computer Engineering, Electrical Engineering, or a related field, or equivalent practical experience.
Strong programming skills in Python or another general-purpose language, including experience creating test frameworks and automation tools.
Hands-on experience designing, operating, and scaling CI/CD systems used by engineering teams.
Experience implementing system-level integration tests for complex, multi-component systems.
Experience with hardware-in-the-loop or lab-based testing, or demonstrated aptitude for working with physical hardware.
Strong debugging skills across software and hardware boundaries.
Strong collaboration skills across multiple engineering and product teams.
Preferred experience with performance testing, workload characterization, electronic-control instrumentation, flaky-test management, test observability, quality metrics, dashboards, containerization, infrastructure-as-code, or scientific and research computing environments.

Benefits

Hybrid work model with remote work a few days per week from the College Park, Boulder, or Bothell offices.
Up to 10% domestic or international travel.
Comprehensive medical, dental, and vision plans.
Matching 401(k), unlimited PTO, and paid holidays.
Parental and adoption leave, legal insurance, and a home technology stipend.

Salary: $146k - $209k/yr

IonQ

IonQ, Inc. [NYSE: IONQ] is the world’s leading quantum platform and foundry - delivering integrated quantum solutions across computing, networking, sensing, and security. IonQ’s newest generation of quantum computers, the forthcoming IonQ Tempo, will be the latest in a line of cutting-edge system...

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