Computational Physicist

· College Park, Maryland
Employment Type Full-Time
Minimum Experience Experienced

IonQ logo and link to the top of the page

IonQ is developing the world's first fully expressive, full-stack quantum computer based on trapped-ion technology. We are pushing past the limits of classical physics and current supercomputing technology. These computers are poised to unlock the staggering potential of the quantum realm and help remake industries like medicine, materials science, simulation, finance, strong A.I., machine learning, cryptography, high-performance supercomputing, and more.

Quantum computers are a revolutionizing technology — they will transform business, society, and the planet for the better, and IonQ is at the forefront of this revolution. We’re proudly supported by high-quality investors like Amazon Web Service, Columbia Capital, NEA, ACME, and more.

We’re looking for a Computational Physicist. As a Computational Physicist, you’ll be part of a cross-functional team whose mission is to lead IonQ on its journey to define and enable the world’s best quantum computers and keep IonQ at the forefront of the industry.


  • Closely collaborating with experimental physicists, quantum circuit designers , and software engineers to build simulations of physical systems
  • Locating code causing computational bottlenecks and making tools to overcome those bottlenecks
  • Contributing to technical documentation


  • Doctorate or Masters degree in Physics, Computer Science, Mathematics, or relevant field and/or experience of more than 5 years
  • Command-line compilation veteran (gcc/gfortran, icc/ifort, clang, PGI, ...)
  • Experience with CPU parallelization (OpenMP, TBB, or via library)
  • Experience with CUDA or other GPU acceleration framework
  • Success working collaboratively in a team environment


  • Expert-level knowledge of Fortran and/or C
  • Expert analysis skills in areas like statistical testing, modeling and general optimization; ML a plus
  • Knowledge of one or more domains of computational physics (PDEs, n-body, large-dimension integration, stochastic systems, ...)
  • Exposure to quantum physics and/or quantum information science
  • MPI or other multiprocessing scheme
  • Performance profiling
  • C extension libraries (eg, Python, Matlab)
  • Working knowledge of Linux 


Given the nature of our business, we will maintain our headquarters which are located down the street from the University of Maryland. Our office is bright and open and a fun, collaborative environment, where we value each other’s unique qualities. IonQ is a five-minute walk to the Metro, which takes just twenty minutes to get to Washington, DC. Currently, we are encouraging work-from-home with office and laboratory visits only as needed. 

IonQ reflects the globally diverse audience that our products and technology serve. We believe that in addition to hiring the best talent, a diversity of perspectives, ideas, and cultures leads to the creation of better products and services. We hire people with a broad set of skills who are ready to take on some of humanity’s greatest challenges and make an impact on millions, if not billions, of users.

If this sounds like a good fit for you, we encourage you to apply.

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  • Location
    College Park, Maryland
  • Employment Type
  • Minimum Experience