Quantum Software Engineer (Compiler)

ColdQuanta • Chicago, IL • 1h ago

Position Summary

This Quantum Software Engineer role will join the Compiler Team within Infleqtion's Quantum Software organization. This role will be responsible for designing, building, and maintaining quantum compilation software alongside considerable involvement in co-design efforts that span the full quantum stack, including applications, algorithms, hardware and control. This role combines hands-on coding, code review, and system design with R&D. Ideal candidates have a strong software development background and familiarity with quantum computation.

This role is open to both entry-level and senior-level candidates.

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 quantum compilation, similar to work described in https://arxiv.org/abs/2309.05157 and https://arxiv.org/abs/2509.13247

Deploy software optimizations to our cloud platform Superstaq using industry-grade software engineering procedures including documentation, linting, testing, and @type-checking

Interface with customers of Superstaq to understand their needs and support them in a timely fashion

Contribute to development of government and commercial proposals and execution on global programs

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 quantum computer architecture, quantum compilation and related fields

Provide guidance and support to other team members, fostering a collaborative research environment

Requirements

Bachelor's degree in computer science, engineering, physics or a directly 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

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 with 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., HTML/CSS, React, PyQt.

Benefits

Salary range: $145,000 to $170,000 per 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 Package

Equal Opportunity

Here you have freedom to embrace your whole self: who you love, your gender identity and expression, skin color, age, appearance, disability, neurodiversity, DNA, military/veteran status, citizenship, and other factors that make up who you are. Your uniqueness is valued, welcomed, and appreciated here. We are dedicated to providing a positive workplace and base all employment decisions on your qualifications, performance, merits, as well as business needs. We are proud to be an Equal Employment Opportunity Employer.

Note

This position may require access to information protected under U.S. export control laws and regulations for quantum computing technology. Please note that any offer for employment may be conditioned on authorization to receive software or technology controlled under these U.S. export control laws and regulations without sponsorship for an export license.

Contact Information

If this opportunity interests you and you fit the job description, please submit an application. If you need assistance or an accommodation due to disability, please feel free to contact us at hr@infleqtion.com.

Notice to Recruitment Agencies:

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

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