Staff Software Engineer – Billing

Staff Software Engineer – Billing & Metering Join to apply for the Staff Software Engineer – Billing & Metering role at IonQ. 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 like 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 sell them We make our systems available via the cloud, alongside quantum services to do the heavy lifting for our customers. We are looking for a Staff Software Engineer to lead our billing and payments platform integration efforts, which makes it possible for us to meter and sell our products to customers. You’ll lead key components of the platform in collaboration with our product team and other engineers, to build the best quantum developer experience for our customers and partners. Responsibilities Architect and lead the design and building of our next‑generation billing and payments platform. Author technical design documents, RFCs, and roadmaps that align with long‑term business goals. Act as the ultimate technical authority for the billing domain. Provide guidance, mentorship, and technical oversight to senior engineers and team leads across the organization. Elevate the entire engineering team through best practices and knowledge sharing. Spearhead the development of solutions for our most challenging technical problems, such as implementing sophisticated usage‑based billing models or expanding into new international markets with complex tax and compliance needs. Collaborate with senior leadership in Product, Finance, and Legal to influence product strategy and ensure our technical architecture can support future business initiatives. Translate complex business needs into a scalable and maintainable technical reality. Remain hands‑on by leading the development of new solutions, contributing to critical path code, and performing deep‑dive investigations into production issues. Required Qualifications Bachelor’s degree in Computer Science, Engineering or a related field, or equivalent training, fellowship, or work experience. 8+ years of professional software engineering experience, with a history of technical leadership and shipping large‑scale, mission‑critical systems. Deep, expert‑level knowledge (4+ years) of payment processing platforms, with extensive hands‑on experience with the Stripe API for SaaS and/or Marketplace use cases (Stripe Billing, Connect, Invoicing, etc.). Strong understanding of transaction lifecycles, payment processing flows, and idempotency in distributed systems. Past experience with usage‑based billing and invoice reconciliation. Solid understanding of microservices architecture, event‑driven systems, and data consistency patterns. Proven experience designing and leading large‑scale, cross‑team technical projects from inception to completion. Exceptional written and verbal communication skills, demonstrated through a portfolio of technical design documents, architectural diagrams, or public presentations. Expertise programming backends in Go or JavaScript. Strong sense of ownership and the ability to navigate ambiguity to drive complex projects forward with a high degree of autonomy. Familiarity with using AI in day‑to‑day coding. Preferred Qualifications 10+ years of software developer experience. Experience with global payment systems, including international tax regulations (VAT, GST), currency conversion, and local payment methods. Deep understanding of financial compliance (PCI DSS) and revenue recognition principles. Past experience with subscription billing systems, usage‑based billing, and invoice reconciliation. Past experience integrating fraud detection systems. Familiarity with usage‑based billing platforms like Metronome. Active participation in the broader tech community (e.g., open‑source contributions, conference talks). Location Ideally, this role will work onsite or hybrid at our office located in Bothell, WA or College Park, MD. We are open to a remote option for the right candidate. Travel Up to 10%. Job ID 1180 Compensation The approximate base salary range for this position is $162,920 – $213,304. The total compensation package includes base, bonus, and equity. Benefits IonQ’s US benefits include comprehensive medical, dental, and vision plans, matching 401(k), unlimited PTO and paid holidays, parental/adoption leave, legal insurance, a home internet stipend, and pet insurance. Benefits details can be found on our career site at ionq.co/jobs. EEO Statement 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. We are a U.S. technical organization. Employment is contingent on verifying U.S. Person status for export controls and government contracts. U.S. Non‑Technical positions require U.S. citizenship or permanent residency or lawful admission as a refugee or asylum. #J-18808-Ljbffr