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 position can work onsite or hybrid from one of our offices (College Park, MD, Bothell, WA, Toronto, Canada, Gothenburg, Sweden) or fully remote in the US.
Travel: Up to 10%, domestic or international.
Job ID: 1683
The Role:
We are looking for a Senior Research Scientist – Fault-Tolerant Quantum Algorithms to join a cross-functional team that uses IonQ’s quantum computers to create highly differentiated quantum solutions that will bring value to society. As a Senior Research Scientist – Fault-Tolerant Quantum Algorithms, you’ll be part of a multi-generational journey to solve the world’s most complex problems using the world’s best quantum computers built at IonQ.
As a deep technical expert on fault-tolerant algorithms, you will help develop next generation quantum algorithms that are poised to exceed state-of-the-art classical methods. You will develop core IP, computational resource models, implementation libraries, long-term roadmaps, and end-to-end workflows that have the potential to disrupt the field of computing. You will also work closely with internal and external customers/partners to brainstorm new ideas, contribute to multi-year initiatives, and represent IonQ at high-visibility technical conferences (often all in a single day)!
Responsibilities:
- Develop fault-tolerant quantum solutions that can make a large scientific and commercial impact across a wide range of industry verticals
- Be part of a client-facing team that finds, defines, and solves problems of real-world interest using IonQ trapped-ion quantum computers
- Contribute technical expertise toward comparisons of FTQC algorithms vs NISQ algorithms vs classical HPC algorithms. Contribute knowledge of metrics and tools (classical and quantum) to evaluate and communicate pros/cons, current state-of-the-art, scaling behavior, trade offs, cross-over points, etc.
- Discover foundational IP and publish results in high-impact-factor peer-reviewed journals and conferences
You’d be a good fit with:
- 2+ years of professional experience or an equivalent combination of education and experience
- Documented expertise in FTQC algorithms with line-of-sight to end-customer value i.e. millions of qubits, billions of gates
- Ability to contribute to the FTQC algorithm community, including the development of tools (libraries, simulators, compilers), metrics (costing, resource estimation, ROI) and community (economic development, standards).
- Relentless dedication to optimizing algorithm performance (accuracy, time-to-solution) through elegant theoretical equations, as well as engineering optimization and implementation
- Proven track record of domain expertise in fault-tolerant quantum computing, demonstrated through invited talks, repos, licenses, publications, and/or patents
- Experience being part of a team that finds, defines, and solves problems of real-world interest. Good team player with excellent communication skills.
You’d be a great fit with:
- Ph.D. in computer science, math, engineering, physics, or related fields
- Experience supporting writing and executing on government contracts
- Demonstrated expertise in C++, Python, Qiskit or similar quantum SDK
- Demonstrated experience benchmarking quantum algorithms using varied metrics
- Success working directly with customers to define and deliver solutions
- Experience developing hybrid end-to-end solutions in a production or cloud environment; knowledge of CI/CD a plus
The approximate base salary range for this position is $145,920 - $191,047. The total compensation package includes base, bonus, equity, and a range of benefit options found on our career site.
Compensation 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!
Skills Required
- 2+ years of professional experience or equivalent combination of education and experience
- Documented expertise in fault-tolerant quantum computing (FTQC) algorithms with line-of-sight to large-scale customer value
- Ability to develop tools, libraries, simulators, compilers, and resource estimation/metrics for FTQC
- Strong focus on optimizing algorithm performance (accuracy, time-to-solution) through theoretical and engineering methods
- Proven track record in fault-tolerant quantum computing demonstrated via invited talks, repositories, publications, patents, or licenses
- Experience working in teams to define and solve real-world problems; excellent communication and collaboration skills
- Ability to support export-control and government contract compliance (U.S. Person status or ability to obtain necessary license)
- Ph.D. in computer science, math, engineering, physics, or related field
- Experience supporting writing and executing government contracts
- Demonstrated expertise in C++, Python, Qiskit or similar quantum SDKs
- Experience benchmarking quantum algorithms using varied metrics
- Experience working directly with customers to define and deliver solutions
- Experience developing hybrid end-to-end solutions in production or cloud environments; knowledge of CI/CD
IonQ Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about IonQ and has not been reviewed or approved by IonQ.
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Healthcare Strength — Comprehensive medical, dental, and vision coverage is described alongside HSA/FSA options, disability and life insurance, and mental health support. Inclusive elements such as transgender health benefits are also part of the package.
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Parental & Family Support — Paid maternity, paternity, and bonding leave is described as fully paid for eligible employees. Additional leave types such as bereavement leave are also included in time-off provisions.
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Retirement Support — A 401(k) plan with company matching up to 5% is included as part of the core package. Vesting is noted as applying over time, indicating the match is structured as a longer-term retention benefit.
IonQ Insights
What We Do
Quantum computers are a revolutionizing technology — they have the potential to transform business, society, and the planet for the better, and IonQ is at the forefront of this revolution. After over 25 years of academic research, IonQ was founded in 2015 by Chris Monroe and Jungsang Kim with $2 million in seed funding from New Enterprise Associates, a license to core technology from the University of Maryland and Duke University, and the goal of taking trapped ion quantum computing out of the lab and into the market. In the following three years, we raised an additional $20 million from GV, Amazon Web Services, and NEA, and built two of the world’s most accurate quantum computers. In 2019, we raised another $55 million in a round led by Samsung and Mubadala, and announced partnerships with Microsoft and Amazon Web Services to make our quantum computers available via the cloud. In 2020 and 2021, we built additional generations of high performance quantum hardware, added Google Cloud Marketplace to our cloud partner roster and announced a series of collaborations and business partnerships with leading academic and commercial institutions. On October 1st, 2021, IonQ began trading as IONQ on the New York Stock Exchange, making it the world's first public pure-play quantum computing company. We remain hard at work realizing the world-changing potential of quantum computing.
Why Work With Us
We’re growing a passionate, diverse team of collaborative, creative people. We believe in pursuing innovative, challenging work with integrity, alongside team members we can learn from and grow with.
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