Quantum Software Engineer - Machine Learning and Optimization

Infleqtion delivers high-value quantum information precisely where it is needed. By operating at the Edge, our software-configured, quantum-enabled products deliver unmatched levels of precision and power, generating streams of high-value information for commercial organizations, the United States, and allied governments. With 16 years of ColdQuanta's pioneering quantum research as our foundation, our hardware products and AI-powered solutions address critical market needs in PNT, global communication security and efficiency, resilient energy distribution, and accelerated quantum computing. We currently have offices in Austin, TX; Boulder, CO; Chicago, IL; Louisville, CO; Madison, WI; Melbourne, AU; and Oxford, UK. Learn how Infleqtion is revolutionizing how we communicate, navigate, and discover at www.infleqtion.com.   We are recruiting for a Quantum Software Engineer - Machine Learning and Optimization.


This position is a full-time, hybrid position which will be located in our Chicago, IL office.


Infleqtion is looking for a quantum engineer who will be responsible for developing and delivering machine learning & optimization solutions based on quantum technologies. The engineer will drive work that contemplates the full quantum software stack, from applications to compiler to awareness of underlying hardware/controls.


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 at any time with or without notice. 

  • Develop quantum machine learning and optimization solutions for end users in industries such as defense and logistics
  • Tailor solutions using full-stack quantum software optimizations: these optimizations can span the full stack, from algorithmic improvements, compiler optimizations, and pulse-level control techniques to force-multiply the capabilities of underlying quantum hardware (we target both NISQ and fault-tolerant hardware)
  • Deploy software optimizations to our cloud platform (Superstaq) with 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
  • Conduct R&D toward cutting-edge advances in quantum technology. Write and manage funding proposals to multi-million-dollar programs across the globe

  • Master’s or PhD-level training in computer science, engineering, physics or directly related field
  • At least three (3) years of experience in quantum technology or machine learning, with at least two (2) years of professional industry-level quantum software work experience
  • Strong familiarity with quantum computing is necessary, as well as familiarity with state-of-the-art tools for (classical or quantum) machine learning & optimization
  • 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
  • Experience with open-source machine learning & optimization frameworks such as PyTorch, SciPy, and scikit-learn; Ideal candidates will have experience not only using these libraries but also modifying them
  • Experience with python programming and software engineering best practices; Ideal candidates will have an active track record on Github/Gitlab, contributing to open-source repositories or building their own repositories
  • Strong work ethic and drive; Appetite for working at the frontiers of quantum technology
  • Demonstrated ability to effectively share information with technical and non-technical staff
  • Demonstrated ability to learn new and complex topics quickly
  • 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, and team-oriented environment
  • Desire and demonstrated ability to thrive and produce results in a fluid, dynamic, and fast-paced environment; Orientation towards execution
  • Passion for solving complex problems and challenges in a highly technical and scientific environment
  • Good verbal and written communication skills, able to effectively share information with technical and non-technical staff
  • Good collaboration skills, able to work in a team environment where engagement and participation are an expected part of successful job performance


This is a salaried position and this role is eligible for our annual Incentive Bonus Plan. In addition to your base compensation, we offer a generous Total Rewards program which includes:

  • 100% company paid Employee coverage for Medical, Dental, Vision, and Short/Long Term Disability insurance programs
  • Employer funded Health Savings Account
  • Unlimited Paid Time Off
  • 401(k) safe harbor contribution
  • Company paid Life and AD&D Insurance
  • Flexible Savings Account
  • Paid FMLA Leave
  • Paid Maternity/Paternity Leave
  • Employer Assistance Program
  • Student Loan Repayment
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.

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@coldquanta.com.

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