Senior Staff RF Test 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.  

Capella, an IonQ company, spans national security, advanced sensing, and next-generation compute to deliver secure, mission-ready intelligence. Capella’s culture is built on collaboration, rigorous engineering, and a shared commitment to delivering solutions that strengthen global stability and security. Team members work side-by-side with some of the most innovative minds in space systems, quantum-enabled technologies, and mission-critical operations.

Capella values curiosity, resilience, and a willingness to tackle hard problems with precision and creativity. Capella welcomes and encourages applicants whose perspectives are historically underrepresented in technology, national security, and aerospace. No prior space experience is required. Diverse viewpoints strengthen Capella’s ability to innovate and deliver meaningful impact for partners worldwide.

We are seeking a highly experienced Senior Staff RF Test Engineer for the Spacecraft Test team to lead RF testing of both current production hardware as well as newly developed spacecraft RF hardware. This candidate should possess a strong combination of hardware and software knowledge with a primary focus on RF test methodologies and automation

The Spacecraft Test team works closely together and collaborates throughout the company. From component production and testing to launch vehicle integration, we work hard to navigate technical and schedule challenges to deliver safe, functional spacecraft. This requires schedule flexibility during challenging times, but we seek to maintain work-life balance in return. 

• →Development and management of high-value component/subsystem testing campaigns
• →Recommend and implement improvements to testing processes and methodologies
• →Assist system team in development of practical and measurable product requirements
• →Monitor and maintain test equipment and ensure facility capabilities to support testing activities are in place
• →Mentor a team of test engineers and technicians
• →Analyze test results, and provide detailed reports to relevant stakeholders
• →Work with design team to incorporate changes in system design to meet requirements
• →Integration and test of RF components and subassemblies
• →Verification and troubleshooting of RF subsystems through all phases of spacecraft integration
• →Identify testing methods, develop test plans, and design GSE for risk mitigation and requirements verification and/or validation
• →Develop/maintain/improve test scripts within an existing test automation framework 
• →Analyze test data and provide recommendations for improvements in both test quality and efficiency 
• →Collaborate with cross-functional teams to troubleshoot and resolve issues  
• →Conduct environmental testing to ensure performance in various conditions  
• →Participate in design reviews and provide input on testability 
• →Adhere to safety and quality standards  

• Bachelor’s degree + 12 years related experience, or master’s degree + 8 years related experience
• Extensive hands-on experience working with and troubleshooting RF circuits and/or 
• systems 
• Expert knowledge of equipment such as network analyzers, spectrum analyzers, 
• and arbitrary waveform generators 
• Proficiency in data analysis and signal processing tools (e.g., Python, MATLAB) 
• Proficiency in scripting languages (e.g., Python, LabVIEW) for test automation 
• Strong understanding of RF system architectures, figures of merit, and common 
• impairments
• Strong understanding of RF principles, including signal propagation, modulation 
• techniques, and antenna theory
• Hands-on experience working with RF PCB-based circuits
• Experience and comfort handling and operating spacecraft flight hardware safely 
• Familiarity with spacecraft architecture and cross-functional engineering stakeholders
• A methodical approach to testing and problem solving of complex systems 
• A track record of safe and effective testing of complex systems 
• Experience leading teams and mentoring junior engineers
• Exceptional communication and presentation skills
• Ability to work in a fast-paced and dynamic environment 

• Knowledge of spacecraft subsystems and operations 
• Experience operating in a contamination- and ESD-sensitive environment 
• Experience testing high-power RF electronics

To conform to U.S. Government space technology export regulations, including the International Traffic in Arms Regulations (ITAR), Capella Employees must be a U.S. citizen, lawful U.S. permanent resident (i.e., current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum, or be eligible to obtain the required authorizations from the U.S. Department of State and/or the U.S. Department of Commerce, as applicable. Learn more about ITAR here.

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