Senior Mask Layout Engineer

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. We are looking for a Senior Mask Layout Engineer on the Fab Tapeout and Validation Team. As a Senior Mask Layout Engineer, you’ll be part of a cross-functional team whose mission is to lead IonQ on its journey to build the world’s best quantum computers to solve the world’s most complex problems. In this role, you will be the owner of full-reticle tapeouts for use in trapped-ion quantum computers, which could include both photonic and analog electronic layers. In addition, you will help develop and maintain the internal PDK and circuit layout libraries, as well as write scripts to automate the layout of masks for tapeouts. You will also have the opportunity to work closely with the photonic and ion trap design and testing teams to help develop new and game-changing quantum technology to enable scalable quantum computing, memory, and networking. Responsibilities: Conduct Python-based layout for full-reticle tapeouts with commercial foundries Develop and maintain internal component PCell and automated circuit layout libraries Interface with designers, test engineers, packaging engineers, and foundry team to define layout rules and component designs Implement physical verification checks of layouts, including DRC and LVS Develop detailed documentation of tapeouts and lead layout reviews with other team members Work with cross-functional teams to understand circuit requirements and make recommendations to improve design, layout, and test workflows You’d be a good fit with: Bachelor’s degree in Photonics, Physics, Electrical Engineering, or related field, or equivalent practical experience Knowledge of semiconductor manufacturing processes and techniques Excellent programming and software skills, including development in an IDE, proficiency with version control software, shell scripting, and code documentation 2+ years of experience with Python-based mask layout software packages such as Luceda IPKISS, GDSFactory, or Klayout You’d be a great fit with: M.S. or Ph.D. in Photonics, Physics, Electrical Engineering, or related field 5+ years experience in generating layout files for complex semiconductor flows with custom elements, such as MEMS, integrated photonics, or superconducting circuits Past ownership of full-reticle tapeouts with commercial foundries Experience with commercial simulation, verification, and layout environments such as Synopsys, Cadence, and Ansys Familiarity with photonic and/or analog electronic device principles including design, test, and fabrication Proficiency in physical verification including DRC, LVS, and ERC Experience with semiconductor and/or photonic workflows for tapeout with commercial foundries Excellent verbal and written communication skills A meticulous attention to detail and excellent track record of documenting requirements, implementation plan, and tracking progress Ability to work