# Quantum Software Engineer - Nuclear

> Infleqtion · Chicago, United States (Hybrid) · Full-time · Posted 2026-07-31

**Salary:** USD 110,000–182,000

**Workplace:** hybrid

**Department:** Compute Business Unit

## Description

We are seeking a Quantum Software Engineer with expertise in nuclear physics and quantum algorithms for physical science applications.

**Job Responsibilities**

The duties and responsibilities outlined below include essential functions of the role. Depending on business needs, this role may perform a combination of some or all of the following duties. Duties, responsibilities, and activities may change, or new ones may be assigned:

-   Conduct R&D toward cutting-edge advances in quantum technology with a focus on applications to nuclear physics
-   Write and test code to apply quantum algorithms to nuclear physics problems
-   Interface and collaborate with external groups interested in using quantum computing to solve nuclear physics problems
-   Contribute to development of government and commercial nuclear proposals
-   Collaborate with experimental physicists and software engineers to bridge the gap between theoretical concepts and practical implementation
-   Engage with the broader scientific community by publishing research findings in scientific journals and presenting at conferences
-   Stay up to date with the latest developments in both quantum algorithms and nuclear physics
-   Provide guidance and support to other team members, fostering a collaborative research environment

## Requirements

**Required Qualifications**

-   BS or MS in Computer Science, Physics, Applied Mathematics, Electrical Engineering, or a closely related field
-   High proficiency in programming, with fluency in Python preferable. Proficiency in alternative languages (e.g., C/C++ or Julia) with the ability to rapidly upskill in Python.
-   General familiarity of nuclear physics: nuclear structure, Goldstone diagrams, Fermionic algebra, Folk Space, etc.
-   Specific experience with at least one subfield of nuclear physics: QCD, EFT, many-body, etc.
-   Experience with quantum algorithms used for physical science applications: QPE, VQE, Hamiltonian Simulation, etc.
-   Experience in applying quantum algorithms to nuclear physics
-   Familiarity with AI: machine learning, LLMs, agentic AI, etc.
-   Experience with open-source quantum software frameworks, such as Cirq or Qiskit. Ideal candidates will have experience not only using these libraries but also modifying them.
-   Demonstrated ability to work and communicate will all levels of an organization. Professional-level communication skills, including verbal, written, and presentation skills.
-   Demonstrated ability to work comfortably in a highly collaborative, cross-functional, team-oriented, and matrixed environment.
-   Desire and demonstrated ability to thrive and produce results in a fluid, dynamic, and fast-paced environment.
-   Demonstrated ability to learn new and complex topics quickly.
-   Resourceful problem-solver who collaboratively identifies effective paths forward with demonstrated expertise in executing productization efforts.
-   Passion for solving complex problems and challenges in a highly technical and scientific environment.
-   Ability to be in the office any three days per week.
-   Ability to travel domestically and potentially internationally up to 10%.

**Preferred Qualifications**

-   PhD in quantum computation, physics, computer science, or a directly related field
-   Familiarity with concepts in quantum computing such as error correction, fault tolerance, native gate decomposition, qubit mapping and routing, and variational quantum algorithms.
-   Experience with advanced open-source quantum software frameworks such as Stim
-   Familiarity with best practices of professional software engineering such as coverage, integration tests, type checking, unit tests, and version control
-   Experience with backend development with tools such as FastAPI for web frameworks and PostgreSQL/SQLAlchemy for databases.
-   Experience with cloud development, especially on GCP and AWS.
-   Familiarity with CI/CD, automated actions, issue tracking, version control, and other features on GitHub.
-   Familiarity with security core best-practices such as access control, encryption at rest, key rotation, and logging
-   Exposure to or interest in front-end / GUI development (e.g., React, JavaScript, HTML/CSS, PyQt).

**Notice to Recruitment Agencies:**

Infleqtion does not accept unsolicited resumes from agencies. Infleqtion is not responsible for any fees related to unsolicited resumes.

## Benefits

-   Salary range: 110000-182000 USD/year
-   100% company-paid medical, dental, vision, short/long-term disability
-   Employer-funded Health Savings Account
-   Unlimited PTO
-   401(k) match
-   Company-paid Life and AD&D Insurance
-   Flexible Savings Account
-   Paid FMLA, Maternity/Paternity Leave
-   Employee Assistance Program
-   Student Loan Repayment
-   Equity Program

## Apply

[Apply at Infleqtion](https://apply.workable.com/coldquanta/j/90221C4715/apply)

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