Staff Software Engineer (SDK), Developer Tools

• Define the technical strategy and roadmap for IonQ's public-facing SDKs, including native SDKs and integrations with ecosystem frameworks (Qiskit, Cirq, Pennylane), ensuring long-term maintainability, performance, and developer adoption.
• Lead the productization and open-sourcing of internal quantum developer tools, establishing release processes, licensing, packaging, and community contribution workflows.
• Serve as the primary architect for the programming paradigms and abstractions IonQ exposes through its SDKs, ensuring they are expressive, ergonomic, and aligned with both current hardware capabilities and the broader quantum software ecosystem.
• Drive the design and implementation of robust, well-documented SDK interfaces for quantum circuit construction, compilation, simulation, and hardware execution.
• Steward IonQ's open-source presence, manage public repositories, triage community contributions, define contribution guidelines, and cultivate a healthy contributor ecosystem.
• Collaborate closely with applications research and compiler teams to evaluate, prototype, and surface novel quantum capabilities (e.g., error mitigation, advanced optimization techniques) as first-class SDK features.
• Oversee comprehensive documentation, examples, tutorials, and quickstart guides to ensure a world-class onboarding and developer experience.
• Establish best practices and mentor engineers on API design, software architecture, testing methodologies, and open-source maintainership.
• Act as a key technical resource for the Applications Engineering team, translating customer needs and partner requirements into SDK features and improvements.
• Champion continuous improvement in software engineering processes, automated testing, CI/CD, and validation standards across the SDK surface area.

You’d be a good fit with:

• Bachelor's degree in Computer Science, Engineering, Physics, or a related field, or equivalent training, fellowship, or work experience.
• 10+ years of professional software engineering experience, with a significant portion spent in a technical leadership or architectural role.
• 7+ years of experience designing, developing, and maintaining public-facing SDKs or developer libraries with a strong emphasis on API design and developer experience.
• Deep expertise in Python and experience designing large-scale, developer-facing software systems.
• Demonstrated experience managing or contributing to open-source projects with external contributors, including release management, community engagement, and contribution governance.
• Proven track record of driving complex, cross-functional engineering projects from concept to production delivery.
• A history of mentorship and elevating the technical capabilities of a multi-level engineering team.
• Familiarity with Agentic AI coding tools and techniques, and experience integrating them into modern software development workflows.
• Exceptional written and verbal communication skills, with a track record of authoring impactful technical documentation, specifications, and developer guides.

You’d be a great fit with:

• An advanced degree (PhD or Master's) in Physics, Computer Science, or a related field with a focus on quantum computing or programming language design.
• Expert-level understanding of quantum computing principles, quantum circuits, optimization techniques, and compiler fundamentals.
• Deep expertise in system-level programming (C++, Rust) for high-performance computing or hardware interaction.
• Significant contributions to open-source software in the quantum computing ecosystem (e.g., Qiskit, Pennylane, Cirq).
• Experience with quantum computing technologies such as error mitigation, quantum error correction, quantum compilers, and circuit optimization.
• Direct experience in programming language or API design, particularly around domain-specific abstractions for scientific or technical audiences.
• A demonstrated ability to influence technical direction across organizational boundaries and secure buy-in for strategic initiatives

The SDK is the front door to IonQ's quantum computers.

Your architectural decisions will shape how thousands of developers, from academic researchers to Fortune 500 engineering teams, experience quantum computing for the first time and build on it over time.

By leading the open-sourcing and productization of IonQ's developer tools, you will directly accelerate the global adoption of quantum computing and help build the community that sustains it.

This role offers the rare opportunity to combine deep technical leadership with high-visibility community impact, defining not just how IonQ's tools work, but how the world writes quantum software.

This position can work onsite or hybrid from Bothell, WA.

Travel: About once per quarter Job ID: 1105

The approximate base salary range for this position is $174,520 - $228,492.

The total compensation package includes base, bonus, and equity.

will vary based on individual factors such as education, qualifications, and experience of the final candidate(s), specific office location, and calibration against relevant market data and internal team equity.

Posted base salary figures are subject to change as new market data becomes available.

Our benefits include comprehensive medical, dental, and vision plans, matching 401(k), unlimited PTO and paid holidays, parental/adoption leave, legal insurance, and a home technology stipend.

Details of participation in these benefit plans will be provided when a candidate receives an offer of employment.

At IonQ, we believe in fair treatment, access, opportunity, and advancement for all while striving to identify and eliminate barriers. We empower employees to thrive by fostering a culture of autonomy, productivity, and respect. We are dedicated to creating an environment where individuals can feel welcomed, respected, supported, and valued. We are committed to equity and justice. We welcome different voices and viewpoints and do not discriminate on the basis of race, religion, ancestry, physical and/or mental disability, medical condition, genetic information, marital status, sex, gender, gender identity, gender expression, transgender 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!