Job Description
Flatiron Research Fellow - Software, Center for Computational Quantum Physics POSITION SUMMARY
Directed by Antoine Georges and co-directed by Andrew Millis, the Center for Computational Quantum Physics (CCQ) is a leading international center for the study of equilibrium and non-equilibrium many-body quantum systems, with applications to condensed matter physics, materials science, quantum materials, quantum emulators and related fields. The development of the concepts, algorithms and code libraries needed to advance the field is fundamental to the work of the center. Research projects currently pursued at CCQ cover a broad range of methods and interest, see: CCQ currently comprises more than 40 scientists at career stages from recent Ph.D.s through senior scientists, as well as support staff, visiting scientists, and affiliated graduate students and interns. The institute has vigorous visitor and workshop programs and strong interactions with scientists from neighboring institutions.
CCQ has established formal partnerships with the New York City-Max Planck Center for Non-Equilibrium Quantum Phenomena , the CIFAR Quantum Materials program, the QUAST collaboration , the CEA-France, and the Collège de France and collaborates extensively with scientists at a range of institutions in the US and internationally. Candidates interested in collaborative work or joint positions are encouraged to discuss possibilities with CCQ staff.
A core effort at CCQ is the development of open-source software libraries with the latest algorithms and tools for advancing scientific research at CCQ and across the wider scientific community. Major software efforts at CCQ include the TRIQS library for quantum embedding, the AFQMC library for auxiliary-field quantum Monte Carlo and the ITensor library for tensor network algorithms.
The Flatiron Research Fellow-Software position is at a postdoctoral level and has as a primary focus the design and implementation of software relevant to research at CCQ. Fellows primarily develop and expand one of the major code efforts at CCQ, devise new or improved algorithms, and advance fundamental research through the perspective of software design and optimization. Applicants typically have backgrounds in one or more of the following areas: theoretical condensed matter physics, computational physics, materials science, theoretical or computational chemistry, applied mathematics, and computer science. Fellows in this highly collaborative position are expected to disseminate their results through a combination of open-source software development, participation in conferences, workshops and seminars, some publications in the scientific literature, and through mentorship of undergraduate and graduate students as appropriate. CCQ also anticipates making several Flatiron Research Fellow appointments; these positions are for scientists who work on developing new concepts, algorithms, and codes needed to understand the many-particle quantum problem, and on the physical and chemical properties of systems requiring this new understanding.
The initial appointment is generally for two years, with the possibility of renewal for a third year, contingent on performance. Flatiron Software Fellows may be eligible for subsidized housing within walking distance of the CCQ. The anticipated start date is between end of August 2027 through early November 2027.
Responsibilities include but are not limited to: Developing, implementing, maintaining and supporting scientific software, with a focus on contributing to one or more of the existing software efforts at CCQ
Performing theoretical and computational research
Assisting in the organization of CCQ and Flatiron-wide collaborative activities including seminars, workshops and meetings
Actively participating in the preparation of manuscripts for publication and of presentations at conferences
Assisting in student mentorship
Sharing expertise and providing training and guidance to CCQ staff and visitors as needed. This position will be based, and have a principal office or workspace, at the foundation's offices in New York City.
MINIMUM QUALIFICATIONS Education Ph.D. in relevant field
Related Skills & Other Requirements Demonstrated expertise in software and algorithm development, computational methods, data analysis, modeling, machine learning, high-performance and parallel computing, or scientific simulation;
Demonstrated experience with modern programming languages such as C++, Python or Julia
Demonstrated ability to perform research in condensed matter physics, chemistry, applied mathematics, computer science, or a related field;
Effective oral and written communication skills;
Ability to work well independently as well as in a collaborative team environment.
Compensation and Benefits The full-time annual compensation for this position is $95,000.
In addition to competitive salaries, the Simons Foundation provides employees with an outstanding benefits package. Application Instructions
REQUIRED APPLICATION MATERIALS Curriculum vitae with publication list
Statement of not more than four pages describing software development experience, software development skills, and algorithm development. Applicants should discuss how these activities connect with and support scientific research topics. The statement may also discuss joint projects with other research institutions.
Three (3) letters of recommendation
Deadline Applications for available positions that begin in 2027 will be reviewed beginning in Fall 2026 and considered on a rolling basis until the positions are filled. For full consideration, application by October 9, 2026 is recommended.
Use of Artificial Intelligence (AI) in Application Materials The Flatiron Institute values authenticity, originality, and transparency throughout the application and hiring process. Applicants are expected to submit application materials that reflect their own original work, experiences, ideas, writing, and scientific or professional judgment. The use of AI-based tools may be appropriate for limited purposes during the hiring process, such as editing, formatting, or code review. However, application materials, including research statements, cover letters, personal statements, and other writing samples, should not be substantially authored or generated by AI systems.
Applicants are encouraged to disclose any significant or material use of AI tools in the preparation of their application materials or throughout the hiring process. The Flatiron Institute does not use AI-based tools to screen applicants.
If you require reasonable accommodation to participate in the job application process due to a disability, please contact us at employment@simonsfoundation.org .
To apply, please visit
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Job Tags
Full time, Work experience placement, Work at office