Senior Staff Software Engineer

Senior Staff Software Engineer - Cloud Platform IonQ is developing the world's most powerful full‑stack quantum computer based on trapped‑ion technology. We are pushing past the limits of classical physics and current supercomputing technology to unlock a new era of computing. Quantum computing has the potential to impact every area of human society for the better. IonQ’s computers will soon redefine industries such as medicine, materials science, finance, artificial intelligence, machine learning, cryptography, and more. IonQ is at the forefront of this technological revolution. We don’t just build the world’s best quantum computers–we want them to be usable by everyone, everywhere. We are looking for a Senior Staff Full‑Stack Software Engineer to join a cross‑functional team building the IonQ Cloud Platform, which connects our customers to our quantum computers via APIs, tools, and partner clouds like AWS, GCP, and Azure. You’ll help build key components of the platform in collaboration with our product, applications, systems, and scientists teams to create the best quantum developer experience for our customers and partners. Responsibilities Work closely with Infrastructure Engineering, Application Development, and Operations teams to provide highly available and fault‑tolerant cloud services. Lead the design and implementation of the IonQ Quantum Cloud service architecture with emphasis on microservices. Define, design, build, validate, and deploy APIs and capabilities to make quantum computing accessible and useful to all IonQ customers. Develop and maintain the IonQ Cloud platform’s CI/CD pipeline. Integrate with partner quantum platforms including Google Cloud, Microsoft Azure, and Amazon Braket. Design and extend the quantum job processing pipeline to support IonQ customers. Design and extend IonQ Cloud service authentication and authorization. Design and extend role‑based access control for IonQ Cloud services. Design and extend the billing engine for IonQ, including customer rate cards, usage and cost tracking, and cost reporting. Mentor senior and junior engineers. Participate in on‑call rotations. Qualifications Bachelor’s degree in Computer Science, Engineering, or a related field, or equivalent training, fellowship, or work experience. 10+ years of professional experience in software engineering. 5+ years of experience developing on Google Cloud Platform. Strong experience with Go, Rust, and JavaScript. Strong experience with large‑scale cloud service platforms and the design of scalable and robust services in the real world. Strong experience working with distributed systems architecture and message queues (e.g., Kafka, Google Pub/Sub). Strong experience in OAuth, OpenID, SAML based authentication. Ability to design and implement critical application components including user interfaces, APIs, services, exception handling, data access, and security. Strong written and oral communication, excellent collaboration and interpersonal skills. Strong experience in leading projects in a cross‑functional team environment. Familiarity with basic quantum computing concepts. 15+ years of professional full‑stack software development experience (preferred). 10+ years working with relational databases (e.g., Postgres). 7+ years working with Kubernetes. 5+ years working in quantum computing. Strong experience in developing responsive web front ends, component libraries, and tools using JavaScript and/or TypeScript; React experience. Location: Basel, Switzerland. This role requires office presence 3+ days a week. Travel: One team meetup in the US annually. #J-18808-Ljbffr