Quantum Software Engineer — Compiler & Cloud R&D

Infleqtion; Chicago (IL); On-site; USD 145,000 - 170,000; Full time

Benefits offered by this job

100% company-paid medical, dental, and

Vision, disability coverage

Employer-funded Health Savings Account

Unlimited PTO

401(k) match

Company-paid Life and AD&D Insurance

Flexible Spending Account

Paid FMLA, Maternity/Paternity Leave

Employee Assistance Program

Student Loan Repayment

Equity Package

Job summary

Infleqtion is seeking a Quantum Software Engineer to join the Compiler Team within its Quantum Software organization. You will design, build, and maintain quantum compilation software, collaborating across applications, algorithms, hardware, and control.

This role blends coding, code review, and system design with R&D, and welcomes both entry and senior level candidates. You will work on cutting-edge quantum technology, deploy optimizations to Superstaq, and engage with customers while

Qualifications

• Bachelor’s degree in computer science, engineering, physics or a directly related field.
• Strong programming skills with Python preferred; other languages welcome.
• Experience with Cirq or Qiskit and ability to modify libraries.
• Excellent written and verbal communication; able to work across teams.

Responsibilities

• R&D toward quantum compilation advances within Infleqtion’s Quantum Software team.
• Deploy software optimizations on the Superstaq cloud platform with proper testing and docs.
• Interface with customers to understand needs and provide timely support.
• Contribute to government and commercial proposals and execution on programs.
• Collaborate with experimental physicists and software engineers to bridge theory and practice.
• Publish research findings and present at conferences; stay current on quantum compilers.
• Provide guidance to teammates and foster a collaborative research environment.
• Bachelor’s degree holders and above may be considered; on-site three days/wk and travel up to 10%.

Skills

Python

C/C++

Julia

Cirq

Qiskit

Open‑source quantum frameworks

Software engineering

Cloud platforms

Education

Bachelor’s degree in CS/Engineering/Physics

PhD in quantum computing or related field

Tools

FastAPI

PostgreSQL/SQLAlchemy

Linux tooling

Job description

Infleqtion is seeking a Quantum Software Engineer to join the Compiler Team within its Quantum Software organization. You will design, build, and maintain quantum compilation software, collaborating across applications, algorithms, hardware, and control.

This role blends coding, code review, and system design with R&D, and welcomes both entry and senior level candidates. You will work on cutting-edge quantum technology, deploy optimizations to Superstaq, and engage with customers while