Senior Software Engineer - Developer Tools

About IonQ:IonQ, Inc. [NYSE: IONQ] is at the forefront of quantum computing, providing innovative solutions to tackle some of the world's most intricate challenges. Our latest quantum systems, IonQ Tempo and IonQ Forte Enterprise, empower leading organizations like Amazon Web Services, AstraZeneca, and NVIDIA to achieve unprecedented performance, boasting a remarkable 20x increase in results. In 2025, we achieved a world record with 99.99% two-qubit gate fidelity, setting a new standard in quantum computing excellence.We are committed to advancing our technology roadmap and aim to deliver quantum computers with 2 million qubits by 2030, driving progress in fields such as drug discovery, materials science, financial modeling, logistics, cybersecurity, and defense. Our pioneering work in quantum networking positions us as leaders in developing the quantum internet.Location: This position is available at our office in Bothell, WA (US) or in Oxford, England (UK).Travel: Twice per yearJob ID: 1453The Role:In the role of Staff Software Engineer for Developer Tools, you will spearhead the development of next-generation quantum compiler tools and features, focusing on their integration into quantum software applications, enhancing the overall developer experience, and improving documentation and tooling. You will establish high-level technical standards, mentor senior engineers and scientists, and apply your expertise to address complex challenges in quantum compilation, optimization, and hardware interfacing. Your leadership will be instrumental in promoting the adoption and enhancement of vital user-facing compiler infrastructure, ensuring alignment with cutting-edge quantum research, including advanced error mitigation and innovative compiler optimization techniques. Collaboration across organizational boundaries—such as Compiler, QEC, Applications, and Engineering—will be essential to support scientific breakthroughs and to define the technical strategy for packaging, documentation, and release processes of major components within IonQ's developer tooling ecosystem.The Developer Tools team is responsible for creating the essential software layer vital for IonQ’s quantum software tools. In this Staff position, you will play a pivotal role in shaping the future of this ecosystem and in bridging critical elements of our engineering and computing organizations. Your success will be measured by the effective delivery of cross-functional projects and the enhancement of technical execution across the entire team.

IonQ is at the forefront of quantum computing, developing the world's most advanced full-stack quantum computers utilizing trapped-ion technology. We are transcending the boundaries of classical physics and current supercomputing capabilities, paving the way for a revolutionary computing era. Our quantum systems have the potential to significantly transform various sectors, including healthcare, materials science, finance, artificial intelligence, machine learning, and cryptography. At IonQ, we are committed to making quantum computing accessible to everyone, everywhere.As a Staff Software Engineer on our Developer Tools team, you will spearhead the creation of our quantum software development kits (SDKs), quantum libraries, and developer tools. You will collaborate closely with product, applications, systems, and science teams to ensure an optimal developer experience for our users and partners. The Developer Tools team is responsible for building the software frameworks that bridge quantum developers to IonQ's quantum computers through SDKs (including Qiskit, Cirq, and native IonQ SDKs), as well as providing compilation, simulation, and emulation utilities, all within the broader quantum software ecosystem. Your contributions will significantly influence how researchers, developers, and organizations engage with quantum computing by providing user-friendly, powerful, and well-documented tools.

IonQ is at the cutting edge of quantum computing, developing the world's most advanced full-stack quantum computer powered by trapped-ion technology. We are pushing the boundaries of classical physics and supercomputing, paving the way for a transformative era in computing. Quantum computing holds the potential to revolutionize various sectors, including healthcare, materials science, finance, artificial intelligence, machine learning, and cryptography. Join us as we lead this technological revolution.At IonQ, we not only create state-of-the-art quantum computers but also offer them through cloud services, providing significant computational capabilities to our customers. We are in search of a Staff Software Engineer to spearhead our billing and payments platform integration efforts, enabling us to meter and sell our innovative products effectively. This role will involve collaborating closely with our product team and fellow engineers to enhance the quantum developer experience for our clients and partners.

IonQ is at the forefront of revolutionizing computing technology with its groundbreaking full-stack quantum computer, powered by trapped-ion technology. We are transcending the boundaries of classical physics and contemporary supercomputing to usher in a new epoch of computing. The potential of quantum computing extends to enhancing various sectors of society, including healthcare, materials science, finance, artificial intelligence, machine learning, cryptography, and beyond. Join us in redefining industries through our innovative quantum computing solutions.We are seeking a Senior Staff Software Engineer in Application Engineering to join our dynamic Applications Engineer team. This cross-functional team is dedicated to translating the advancements in quantum technology into practical applications that deliver real-world value.Our mission goes beyond merely constructing the world's most advanced quantum computers; we are committed to leveraging state-of-the-art quantum computing tools to address tangible challenges. Our Applications Scientists have been collaborating with customers to develop prototypes, and our newly established Applications Engineering department will be instrumental in transforming these validated use cases into production applications, making these revolutionary tools accessible to a broader audience through SaaS delivery.Your role will be pivotal in transitioning existing proof-of-concept quantum codes into robust, production-ready applications. As a hands-on team lead, you will enhance the developer experience (DevEx) by implementing best practices for research-grade code. Responsibilities will include establishing CI/CD pipelines, software packaging tools, and both pre- and post-deployment tests for new algorithms. In addition, you will be tasked with optimizing and parallelizing traditional algorithms to streamline processing workloads. This role is akin to being a forward-deployed engineer for quantum computing applications, and ideal candidates will possess a diverse range of interests and expertise.This team will collaborate closely with Developer Tools, Infrastructure, and Product teams to devise effective solutions by selecting appropriate technologies and standardizing automated processes. The ideal engineer will possess comfort in refining quantum computing tools, such as chemistry simplification, one quarter and implementing novel quantum topology solvers as services the next—while enjoying collaborative programming with scientists. You will bring your classical computing expertise to complement our quantum knowledge.

Join Sonsoft Inc., a leading provider of innovative software solutions, as a Software Development Engineer in Test (SDET). We are seeking a talented individual with experience in using the Empirix Hamer Tool to enhance our software testing processes. This role is crucial for ensuring the quality and performance of our software products.

At IonQ, we're at the forefront of quantum computing innovation, developing the world's most advanced full-stack quantum computer powered by trapped-ion technology. Our mission is to transcend the limits of classical computing and reveal a new era of computational possibilities. Quantum computing is set to transform numerous sectors including healthcare, materials science, finance, artificial intelligence, and more. Join us as we lead this transformative journey.As a Senior Staff Software Engineer focusing on HPC integration, you will play a key role in creating and maintaining our software interfaces with SLURM and other open HPC stacks. Your contributions will be vital in harnessing the power of quantum computers alongside classical data centers, enhancing our capabilities to tackle the world's most complex challenges.

At IonQ, we are pioneering the future of computing with our state-of-the-art full-stack quantum computer powered by trapped-ion technology. Our commitment to advancing beyond classical physics and current supercomputing capabilities is unlocking unprecedented possibilities in computing. Our quantum technology stands to revolutionize numerous sectors, including healthcare, materials science, finance, artificial intelligence, machine learning, and cryptography. Join us at the forefront of this groundbreaking technological evolution.We don’t just build the world’s best quantum computers—we also provide access to them via cloud services to customers around the globe, including organizations with complex needs.We are seeking a Staff Software Engineer to spearhead the development of our Identity and Access Management (IAM) and Role-Based Access Control (RBAC) systems. In this role, you will empower our customers to manage their identities and secure their data effectively. Collaborating closely with our product team and fellow engineers, you will play a pivotal role in constructing the premier quantum platform for our clients and partners.

IonQ is at the forefront of revolutionizing quantum computing, developing the world's most advanced full-stack quantum computer powered by trapped-ion technology. We are transcending the boundaries of classical physics and current supercomputing capabilities to usher in a transformative era of computing. Our quantum systems are poised to enhance every facet of human existence. IonQ’s innovative technology is set to reshape industries such as healthcare, materials science, finance, artificial intelligence, machine learning, cryptography, and more.We invite a talented Staff Quantum Control Hardware Engineer to join our Networking, Sensing, and Security division. In this pivotal role, you will collaborate with a diverse team dedicated to advancing IonQ's mission of building the most powerful quantum computers and interconnected systems aimed at solving the world's most intricate challenges.As part of this position, you will be responsible for designing the essential physical layer interface for next-generation quantum networking nodes and high-precision sensing devices. Your expertise will be instrumental in creating low-noise, high-precision mixed-signal hardware crucial for controlling optical sources and reading single-photon detectors. This role offers a unique opportunity to shape the hardware architecture that will facilitate the quantum internet and ultra-secure communications.Key Responsibilities:Design and develop low-noise, high-precision mixed-signal circuit boards (DACs/ADCs) for driving optical modulators and laser sources for quantum networking protocols.Engineer ultra-low-noise readout interfaces for single-photon detectors utilized in Quantum Key Distribution (QKD) and sensing applications.Ensure hardware designs maintain the signal integrity and coherence necessary to preserve quantum states during transmission and transduction.Collaborate closely with FPGA Engineers to gather timing specifications and provide signal conditioning details for synchronization across network nodes.Lead the complete hardware lifecycle from schematic capture and PCB layout to simulation, testing, and system integration within a sensing or security testbed.Troubleshoot complex hardware interactions to reduce phase noise and jitter in networking hardware.Mentor junior hardware engineers and guide technical decisions regarding the physical layer architecture for security products.

IonQ is pioneering the development of the world's most powerful full-stack quantum computer utilizing trapped-ion technology. We are transcending the boundaries of classical physics and existing supercomputing capabilities to usher in a new era of computational power. Quantum computing holds the remarkable potential to positively influence numerous facets of human life. IonQ's innovations are set to transform industries such as healthcare, materials science, finance, artificial intelligence, machine learning, and cryptography. Join us at the forefront of this technological revolution.We are in search of a strategic and visionary Director of Software Engineering to spearhead the development and operational excellence of the core services offered by the IonQ Quantum Cloud platform (experience it here: https://cloud.ionq.com). This critical role is responsible for providing seamless access to our advanced quantum computers and simulators through our APIs both in the cloud and on-premises. The Director will influence the technical trajectory of the IonQ Quantum Cloud API platform, ensuring its alignment with IonQ's broader business objectives and the emerging market opportunities within the ever-evolving landscape of quantum computing.The successful candidate will possess a wealth of experience in leading or contributing to multiple concurrent initiatives, adeptly balancing diverse activities with a focus on prioritizing efforts that yield the greatest impact. You will leverage your technical acumen and business insight to make impactful technology decisions. Striving for simplicity, you will exhibit significant creativity and sharp judgment. You will thrive in learning complex technical subjects, collaborating across various business domains, and play a pivotal role in advancing secure quantum computing.

Join our dynamic team at Sonsoft Inc. as a Java Developer with Angular experience. We are looking for a passionate individual who thrives in a collaborative environment and is eager to contribute to innovative projects. Your role will involve developing high-quality software solutions while leveraging your expertise in Java and Angular frameworks.

Join our dynamic team at Sonsoft Inc. as a Java/J2EE Developer, where you will leverage your expertise in AngularJS and UI development to create innovative software solutions. We are looking for talented individuals who are passionate about technology and eager to contribute to a collaborative environment.

IonQ is at the forefront of quantum computing, striving to develop the most advanced full-stack quantum computer utilizing trapped-ion technology. Our mission is to transcend the boundaries of classical physics and existing supercomputing capabilities to usher in a revolutionary era of computing. Quantum computing holds the promise of significantly enhancing various sectors, including medicine, materials science, finance, artificial intelligence, machine learning, and cryptography. We are leading the charge in this technological evolution.As we approach the scale of quantum computing, our systems will execute certain computations faster and handle larger datasets than the largest supercomputers on the planet. However, these quantum systems will still need to seamlessly integrate with classical computing architectures for comprehensive calculations. Just as your device integrates CPUs and GPUs for effective rendering, the data centers of the future will combine CPUs, GPUs, and QPUs to tackle the world’s most challenging problems.We are seeking a Senior Software Engineering Manager to guide and expand our Runtime team, responsible for creating and maintaining our hybrid classical-quantum computing environment for clients. In this pivotal role, you will facilitate key customer capabilities, including quantum emulation, pluggable compilers, and performance efficiency, ultimately delivering our fault-tolerant quantum computing layer at scale. You will collaborate closely with our API teams and our comprehensive hybrid computation initiatives.The ideal candidate will boast experience in leading and contributing to multiple concurrent initiatives, adeptly balancing various activities while focusing on impactful priorities. You will merge technical prowess with strategic business acumen to make informed technology decisions that yield lasting effects. A commitment to simplicity, creativity, and sharp analytical judgment will be crucial. You should enjoy delving into technical subjects and working across diverse business streams, positioning yourself to help us achieve the next milestone in secure quantum computing.

Join the dynamic team at Sonsoft Inc. as a Java/Angular Developer! We are seeking a skilled individual who is passionate about developing innovative solutions using Java and Angular technologies. In this role, you will work closely with cross-functional teams to design, implement, and maintain high-quality software applications.You will have the opportunity to contribute to exciting projects and enhance your technical skills in a collaborative environment. If you thrive in a fast-paced setting and are eager to make an impact, we encourage you to apply!

Join our dynamic team at Sonsoft Inc. as an Oracle ATG Developer. In this role, you will leverage your expertise in Oracle ATG to design, develop, and implement high-quality eCommerce solutions that enhance user experience and drive business growth. You will collaborate with cross-functional teams to deliver innovative solutions tailored to client needs.

IonQ is pioneering the development of the most advanced full-stack quantum computer, leveraging trapped-ion technology. We are breaking the barriers of classical physics and current supercomputing capabilities to usher in a new epoch of computing. Quantum computing holds the promise to transform various sectors of human endeavor for the better. IonQ's innovations are set to revolutionize industries such as healthcare, materials science, finance, artificial intelligence, machine learning, cryptography, and beyond. Join us as we lead this technological renaissance.We are in search of a Senior Network Orchestration Engineer to become an integral member of our collaborative team. In this pivotal role, you will serve as the chief architect of the high-level service plane, creating a seamless connection between quantum hardware and classical infrastructure.You will face the unique challenge of managing a distributed quantum networking and sensing solution, utilizing your expertise in high-scale systems to guide IonQ in its mission to construct the world’s premier quantum networks.

About IonQ:IonQ, Inc. (NYSE: IONQ) stands at the forefront of quantum computing, pioneering solutions to address some of humanity's most intricate challenges. Our latest quantum systems, IonQ Tempo and IonQ Forte Enterprise, empower organizations like Amazon Web Services, AstraZeneca, and NVIDIA to achieve remarkable performance improvements — up to 20x. In 2025, we set a record for quantum computing performance by achieving 99.99% two-qubit gate fidelity.With an ambitious roadmap, IonQ is set to revolutionize the tech landscape by delivering quantum computers with 2 million qubits by 2030, driving breakthroughs in drug discovery, materials science, financial modeling, logistics, cybersecurity, and defense. Our advancements in quantum networking also position us as a key player in the development of the quantum internet.Location: This position is based onsite at our Bothell, WA office.Travel: Up to 10%Job ID: 1438The Role:We are seeking a Senior Infrastructure Software Engineer to take charge of the reliability, scalability, and deployment of our electronic hardware test automation platform. This essential platform is critical for executing comprehensive testing — from full-system to component-level automated electronic hardware tests across our global engineering sites and contract manufacturer locations.As the primary infrastructure authority on our internal tooling software development team, you will collaborate closely with IonQ's core Infrastructure team. Your goal will be to develop and deploy a minimal, secure, and maintainable infrastructure required for executing our test automation software on various devices, from rack-mounted servers to lightweight, single-purpose devices within our manufacturing verification processes. As a senior team member, you will work independently, lead moderately scoped projects, and serve as a subject-matter expert for the test organization.Responsibilities:Design, build, and maintain CI/CD pipelines for deploying our test automation software to a distributed fleet of testbeds.Develop and manage infrastructure for testbed provisioning, remote management, and monitoring.Contribute to testbed design and hardware selection to enhance team objectives.Implement and uphold best practices in software development and infrastructure management.

Join our dynamic team at Sonsoft Inc. as a Java/J2EE Developer with a focus on AngularJS and UI development. We are seeking talented professionals who are passionate about creating innovative software solutions. You will work collaboratively with cross-functional teams to deliver high-quality applications that meet our clients' needs.

About IonQ IonQ, Inc. stands as a leader in quantum computing, delivering integrated solutions across computing, networking, sensing, and security. The company’s IonQ Tempo platform marks a major advance in quantum technology, helping clients such as Amazon Web Services and AstraZeneca accelerate work in drug discovery, materials science, financial modeling, logistics, cybersecurity, and defense. In 2025, IonQ achieved 99.99% two-qubit gate fidelity, setting a new world record in quantum computing performance. Headquartered in College Park, Maryland, IonQ operates in locations including Washington, California, Colorado, Massachusetts, Tennessee, Italy, South Korea, Sweden, and Switzerland, reflecting a broad global presence in quantum technology.

Join IonQ, pioneers in quantum computing, as we develop the world's most advanced full-stack quantum computer utilizing trapped-ion technology. Our aim is to transcend the boundaries of classical physics and current supercomputing capabilities, ushering in a transformative era of computing that can positively influence every aspect of society. IonQ’s innovations are set to revolutionize sectors including medicine, materials science, finance, artificial intelligence, machine learning, cryptography, and beyond. We are leading this technological evolution.We seek a Staff Scientist – Fault-Tolerant Quantum Algorithms to spearhead the technical advancements in harnessing IonQ’s quantum computers for developing unique quantum solutions that deliver significant societal benefits. In this pivotal role, you will be an integral part of a dynamic, cross-functional team dedicated to tackling the world’s most complex challenges with the industry’s leading quantum computers.As a hands-on expert in fault-tolerant algorithms, you will explore the next generation of quantum applications expected to outperform traditional classical methods. Your contributions will include the development of quantum algorithms, foundational intellectual property, computational resource models, strategic roadmaps, and comprehensive workflows capable of disrupting the computing landscape. You will collaborate closely with product, engineering, marketing, sales, operations, and external stakeholders to generate innovative ideas, propose ambitious multi-year projects, and represent IonQ at prominent technical conferences.