Location: This role is based at our Bothell, WA office, with the option to work a few days a week remotely.
Travel: 5% or less
Job ID: 1491 

The Role: 

We’re looking for a Senior System Operations Engineer for our bleeding edge quantum computers that are based on trapped ion technology. You’ll be part of a cross-functional team whose mission is to operate and improve IonQ’s industry-leading quantum computers. In the first three months on the job, you’d be learning how to maintain our quantum computers’ hardware and software. Recent graduates in physics and related fields are encouraged to apply; we will train you in quantum computer maintenance and operation!

Responsibilities:

• Participate in follow-the-sun on-call rotations to keep our systems running at peak performance.
• Ensure high uptime and performance of our commercial quantum computers, through alert response, monitoring, and engineering of state-of-the-art quantum computers.
• Work collaboratively with other System Operators on improvements and processes and practices to make operating quantum systems easier and more efficient.
• Communicate with customers to coordinate access and inform on system status.
• Remotely interfacing with quantum systems to impact performance using documented procedures.
• Interpreting telemetry to aid in deeper understanding of quantum system status. 
• Clearly communicating with teams working across multiple timezones.

Requirements:

• Bachelor’s or Master’s degree in physics, engineering, or another physical science
• Desire and capability to work closely on a team that is distributed - excellent communication skills and a collaborative mindset
• Hands on experience with optical alignments, laser stabilization, and/or AOMs
• A propensity for learning new things and fascination with emerging technologies
• Formal training or education in statistics
• Capable of adapting for an ever-growing and ever-changing work environment
• Disposition to work flexible working hours, on a 24/7 oncall shift where the rotation changes as needed
• 1+ year laboratory experience in atomic and/or optical physics

Preferred Qualifications:

• PhD in physics, engineering, or another physical science
• Deep experience with Javascript or Python
• A background in data analysis, data science, or machine learning
• Software Engineering experience

The approximate base salary range for this position is $114,750 - $150,237. The total compensation package includes base, bonus, equity, and a range of benefit options found on our career site.

We are looking for a Senior Physicist for optical signal chain development. As a Senior Physicist, 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 do pioneering work on optical signal chains for long-range quantum networks and modular quantum computing. You will work with a world-class team of scientists and engineers to build systems that can rapidly process and store quantum information from photons and apply those systems to building scalable quantum computing systems. Your work will stretch from pioneering systems to operationalizing and scaling optical signal chains that will be the backbone of the world’s largest quantum computers.

Responsibilities: 

• Evaluate how pieces of the optical signal chain can be hardened for autonomous operation and production
• Investigate the feasibility in prototype experiments and develop routines that calibrate and maintain the optical setup.
• Benchmarking different variations of the signal chain against each other by comparing signal losses (impacting the rate) with stability (possibly impacting both rate and fidelity) and scalability; 
• Coordinate with other teams internally at IonQ and/or with external vendors to develop subcomponents.

You’d be a good fit with: 

• PhD in physics, applied physics, electrical engineering 
• Work in quantum optics and quantum computing (ideally previous work with single photons)
• Experience designing and testing complex opto-mechanical and opto-electronical setups (including using acousto-optical and electro-optical modulators for intensity and frequency feedback loops)  
• Experience in developing automated routines (hardware & software) that calibrate and maintain setups autonomously

You’d be a great fit with: 

• Experience in optically-mediated entanglement protocols between qubits
• Experience in quantum frequency conversion 
• Experience in writing software for lab environments (preferred language: Python)

Location: Boston, MA
Travel: Occasional domestic travel, 1 to 4 times per year.
Job ID:  IONQ-1272

The approximate base salary range for this position is $126,887 - $166,127. The total compensation package includes base, bonus, and equity.

We are looking for a Simulation Physicist to join our Ion Transport and Waveform Design team. As a simulation physicist, 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 study the physics of ion transport through numerical simulation. You will collaborate with experimental teams to validate simulation results and physics understanding, commercial teams to design transport waveforms used in our quantum computers, and quantum architects to inform the design of next-generation ion traps.

Responsibilities:

• Create, update, and maintain numerical simulation tools for ion transport in RF Paul traps.
• Validate simulation results in collaboration with experimental teams.
• Develop novel control schemes for fast, robust, and low-excitation ion transport.
• Deliver control voltage waveforms that implement the required operations for a trapped-ion quantum computer.
• Work with trap designers to incorporate novel transport techniques into future systems.

You’d be a good fit with: 

• PhD in atomic physics, quantum information, or a related field.
• Experience in numerical simulation and optimization to inform experimental design.
• Strong proficiency in programming and data analysis.
• Strong communication and collaboration skills

You’d be a great fit with: 

• Experience with transport or waveform design in surface-electrode RF Paul traps.
• Experience using a compiled programming language (Rust, C, C++, etc.) for scientific computing.

Location: This role will work onsite in Boulder, CO or Oxford, UK.
Travel: Up to 10% (domestic and international)
Job ID: 1422

The approximate base salary range for this position is $110,336 - $144,459. The total compensation package includes base, bonus, and equity.

The mission of the QPU Testing team is to improve quantum computer performance through validation of QPU (quantum processing unit) designs and verification of individual QPUs produced by the manufacturing team. We own the creation and execution of test plans that we develop with stakeholders across the Quantum Computing organization. We are looking for a Staff Physicist to join the QPU Testing team as our Scientific Validation lead. In this role, you will ensure our testing accurately captures performance characteristics which are important to the Science team. You will also serve as a trusted internal authority on physics-related test validity, rigor, and interpretation.

You will help to turn scientific questions and risk areas into concrete, executable test plans, including testing with and without ions, then communicate results, interpretation, and actionable feedback to stakeholders. This role is central to maintaining a trusted testing roadmap and ensuring tight feedback between development and testing.

Responsibilities:

• Drive creation and evolution of validation test plans, procedures, and acceptance criteria, aligned to science priorities.
• Translate scientific requirements into practical, executable test coverage and readiness standards for QPU testing platforms.
• Provide physics triage for complex, ambiguous system issues, defining next diagnostics and escalation paths.
• Execute and validate testing campaigns, including hands-on operation and troubleshooting of a trapped-ion system.
• Communicate results and recommendations clearly across scientific and cross-functional stakeholders.

You’d be a good fit with: 

• PhD in experimental atomic/AMO physics (or closely related field) and 5+ years of industry experience post-PhD.
• Hands-on experience operating a trapped-ion experiment (minimum requirement).
• Demonstrated ability to independently define next steps, prioritize work, and execute with minimal supervision.
• Strong experimental fundamentals (optics/lasers, vacuum, control systems) and comfort debugging complex experimental systems.
• Ability to translate scientific goals into test plans and acceptance criteria, and to communicate results clearly to both scientific and cross-functional stakeholders.

You’d be a great fit with:

• Deep trapped-ion background (e.g., PhD research focused on trapped-ion quantum computing and/or extensive trapped-ion apparatus experience).
• Track record owning end-to-end validation strategy (metrics to procedures to execution to reporting) for complex platforms.
• Experience working in highly collaborative, cross-disciplinary teams and influencing testing priorities across org boundaries.
• Strong Python-based experiment control and/or analysis workflows.

Location: This role is based onsite at our headquarters in College Park, MD.
Travel: 10%
Job ID: 1358

The approximate base salary range for this position is $126,887 - $166,127. The total compensation package includes base, bonus, and equity.

1. Delivers a prescribed and planned course of radiation therapy to patients, answers patient questions, and explains procedures.
2. Assists in tumor localization and dosimetry procedures.
3. Prepares rooms and equipment for patients, stocks rooms with linens and supplies, and orders equipment and supplies as needed.
4. Prepares chart for patient treatment, and takes and reviews images for physician approval.
5. Interfaces with the physicist, imaging personnel and dosimetry to simulate and initiate treatment. Consults with supportive care staff to provide high quality patient care.
6. Reinforces recommendations given to patients by the physician, nurse, dietitian, etc., concerning the reaction to treatment and care of the radiated area, and prevention or treatment of generalized and local side effects.
7. Enhances professional growth and development through participation in educational programs, professional affiliations, current literature, in-service meetings, and workshops.
8. Changes therapy as ordered and performs chart checks in preparation for participation in weekly patient chart rounds.
9. Role models the principles of a Just Culture and Organizational Values.
10. Perform other duties as assigned. Must be HIPAA compliant.

• Two years of experience as a Radiation Therapist preferred.
• TrueBeam and Aria experience preferred.
• Detail oriented and proactive in navigating patients’ courses of treatment.

• American Registry of Radiologic Technologists (ARRT) with Radiation Therapy (T) specialty required.
• Basic Life Support (BLS) required.

• N/A

PRN (POOL) benefits include: Wellbeing reimbursement funds and 403(b) contribution eligibility 

PsiQuantum’s mission is to build the first useful quantum computers—machines capable of delivering the breakthroughs the field has long promised. Since our founding in 2016, our singular focus has been to build and deploy million-qubit, fault-tolerant quantum systems. 

Quantum computers harness the laws of quantum mechanics to solve problems that even the most advanced supercomputers or AI systems will never reach. Their impact will span energy, pharmaceuticals, finance, agriculture, transportation, materials, and other foundational industries. 

Our architecture and approach is based on silicon photonics. By leveraging the advanced semiconductor manufacturing industry—including partners like GlobalFoundries—we use the same high-volume processes that already produce billions of chips for telecom and consumer electronics. Photonics offers natural advantages for scale: photons don’t feel heat, are immune to electromagnetic interference, and integrate with existing cryogenic cooling and standard fiber-optic infrastructure. 

In 2024, PsiQuantum announced government-funded projects to support the build-out of our first utility-scale quantum computers in Brisbane, Australia, and Chicago, Illinois. These initiatives reflect a growing recognition that quantum computing will be strategically and economically defining—and that now is the time to scale. 

PsiQuantum also develops the algorithms and software needed to make these systems commercially valuable. Our application, software, and industry teams work directly with leading Fortune 500 companies—including Lockheed Martin, Mercedes-Benz, Boehringer Ingelheim, and Mitsubishi Chemical—to prepare quantum solutions for real-world impact. 

Quantum computing is not an extension of classical computing. It represents a fundamental shift—and a path to mastering challenges that cannot be solved any other way. The potential is enormous, and we have a clear path to make it real. 

Come join us. 

Job Summary:

Quantum architects research and develop architectures for fault tolerant photonic quantum computers, in particular methods for entanglement generation, encoded logic, and error correction. Quantum architects in the simulation team focus on developing and running large-scale simulations to evaluate the performance of such methods and their integration into a full-stack architecture. We are looking for an experienced physicist with a strong collaborative software engineering background to bridge the gap between quantum computing research and scalable software development.

This role focuses on modelling the generation of entangled qubit resource states using linear optical networks in our full-stack simulations. Candidates should have knowledge of linear optics, and experience in some of the following areas: linear optical quantum computing, quantum error correction, quantum networks, error modelling, switching / multiplexing networks. The position requires close collaboration with optical architecture and fault-tolerance teams and involves frequent iteration in response to evolving technical requirements. 

Responsibilities:

• Work closely with quantum architecture domain experts to understand, implement, and simulate new state-of-the-art methods for the generation of entangled resource states and encoded logic.
• Design, develop, and maintain robust software tools and infrastructure for the simulation of full-stack quantum architectures.
• Profile simulation software and explore and implement more optimal computational techniques.
• Run simulation analyses, manage data, and communicate results.
• Ensure the interoperability of simulation tools and modelling frameworks across projects, teams, and departments.

Experience/Qualifications:

• Degree in Physics, Math, Computer Science, or Electrical Engineering is required. A postgraduate degree related to quantum information or technology is preferred.
• 3+ years of collaborative software engineering experience, preferably in an R&D environment.
• Knowledge of quantum information and linear optics is required. Familiarity with linear optical quantum computing, quantum error correction, quantum networks, error modelling, graphical calculus (e.g. ZX calculus), tensor networks are strongly preferred. 
• Extensive experience with Python is required. Experience with a lower-level language such as C++ is preferred.
• Experience with collaborative software development tools and best practices is required e.g. Gitlab, CICD.
• Proven team player with an ability to collaborate effectively across departments, sites, and time zones.
• Ability to work independently, prioritize and steer projects to completion, and contribute to a fast-moving start-up environment. 

PsiQuantum provides equal employment opportunity for all applicants and employees. PsiQuantum does not unlawfully discriminate on the basis of race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), gender identity, gender expression, national origin, ancestry, citizenship, age, physical or mental disability, military or veteran status, marital status, domestic partner status, sexual orientation, genetic information, or any other basis protected by applicable laws.

Note: PsiQuantum will only reach out to you using an official PsiQuantum email address and will never ask you for bank account information as part of the interview process. Please report any suspicious activity to recruiting@psiquantum.com.

We are not accepting unsolicited resumes from employment agencies.