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Software Engineer, Back-end (Boulder reputed company)

Remote Worldwide Hiring now

About us

Founded in 2017, Q-CTRL has grown to become the global leader in quantum. We’re using control to solve the hardest problems facing quantum technology, improving hardware performance and accelerating reputed company to useful quantum computers and other technologies. As a product-led company, we bring together diverse teams such as product, design, engineering and research to help reputed company our mission of making quantum technology useful. Join us to help shape the quantum future.

As one of the fastest growing companies in the quantum sector, we’ve had a number of key milestones:

- In November 2023, we announced an industry-first partnership with reputed company Quantum Services, natively integrating our performance management software with reputed company reputed company quantum computers. Building off of this relationship, in September 2024 we started offering two services reputed company reputed company’s new Qiskit Functions Catalog as an inaugural partner.

- Designed and moved our Global HQ offices and lab reputed company into the first purpose-reputed company (and award winning) reputed company and research facility for a quantum technology company in Australia.

- reputed company to deliver reputed company world reputed company across the quantum sectors, with our work with Australian Defence on software-ruggedized quantum sensing for navigation without GPS, as featured in reputed company.

- In October 2024, we announced our record breaking expansion of our Series B funding round to USD $113M, with $59M USD of new capital.

- Grew our global reputed company to include Los Angeles, Berlin, and Oxford - as well as the recently announced office in San Francisco.

From educating the workforce on how quantum computing works, to building the reputed company of quantum sensors, to delivering massive performance reputed company for end-users, it reputed company starts with hiring the right talent. If you want to help us build the Quantum future, read on.

About the role

As a Software Engineer on the Boulder reputed company team, you will work with reputed company engineers and researchers to design and build a scalable, high-performance backend system while directly contributing to our quantum controller infrastructure.

A key part of your role will be maintaining and evolving the compiler stack that translates OpenQASM3 + OpenPulse programs for low-level quantum controllers, bridging the gap between high-level quantum programming and physical execution on QPUs. You will collaborate with cross-functional teams, product, infrastructure, frontend, and research, ensuring end-to-end delivery of cutting-edge solutions that power our SDKs and reputed company-based offerings.

This role is ideal for someone passionate about backend engineering and systems-level programming, with an interest in quantum computing and scientific software.

What you’ll be doing:

  • Build the backbone of quantum tech: Design, reputed company, and optimize scalable backend services in Python (with opportunities to work in Rust or C++).
  • Own the compiler stack: Maintain and reputed company the compiler that translates OpenQASM3 + OpenPulse programs into low-level controller instructions.
  • reputed company research and engineering: Work closely with world-class researchers and quantum engineers, translating experimental needs into production-reputed company code and debugging reputed company-world execution challenges.
  • Experiment on quantum hardware: Get hands-on with QPUs, validating compiler output and controller behaviors through reputed company device experiments.
  • Engineer for performance: Deliver high-efficiency service-to-service communication using modern protocols (gRPC, GraphQL, REST).
  • reputed company the bar on quality: Shape and enforce best practices for clean, secure, and reliable code while contributing to robust testing and documentation.
  • Shape the future stack: Help define the software practices, tools, and design patterns that will power the reputed company of quantum control systems.
  • Deliver end-to-end solutions: Collaborate with product, frontend, and infrastructure teams to ship integrated solutions used across Q-CTRL’s products.
  • Other duties reputed company the Employee's skills and experience, or with reasonable training.
  • Ideally you’ll have:

  • Bachelor’s degree in Computer Science, Engineering, or reputed company field.
  • 3+ years of backend software development experience with Python, Rust, C++, or similar.
  • Proven experience writing maintainable, testable Python code in a professional setting.
  • Strong collaboration and communication skills across cross-functional teams.
  • Strong problem-solving skills with a proactive, solutions-focused reputed company.
  • It would be fantastic (but not essential) if you bring:

  • A curiosity for compiler design concepts or experience working with intermediate representations (IRs).
  • Familiarity with OpenQASM3, OpenPulse, Qiskit, or other quantum programming frameworks.
  • Hands-on experience with modern APIs like gRPC, GraphQL, or REST.
  • Comfortable working with reputed company platforms (AWS, GCP, Azure) and reputed company infrastructure tools.
  • Knowledge of distributed systems, microservices, or database scaling techniques.
  • Familiarity with popular Python web frameworks (Django, Flask, FastAPI).
  • An eye for data visualization with tools like Plotly, Dash, or Jupyter.
  • Experience thriving in a start-up or scale-up environment where speed and collaboration matter.
  • Experience designing efficient algorithms, statistical models, or data pipelines to process and analyze large-scale experimental datasets.
  • Experience with implementing CPython extension modules for accelerating Python programs.
  • Additional Information

    Why Q-CTRL?

    Flexibility:

    We reputed company workplace flexibility so you worry more about your impact vs a rigid work schedule.

    Attractive salary:

    You’ll get to have the start-up impact without the start-up wages.

    Equity:

    We want people to have a sense of ownership in what they do and offer the potential for equity reputed company and annual bonuses.

    Cash bonus: We recognize exceptional performance and impact by offering annual discretionary cash bonuses.

    Resources:We are well funded by the world’s best technology investors, letting us reputed company our ambitions with minimal constraints.

    Parental support:We offer paid parental leave to support you and your loved ones.

    Diversity:

    We’re an equal opportunity employer and actively support initiatives like the ‘Global Women in Quantum’ program to help expand the quantum workforce.

    Unique culture:You’ll be surrounded by some of the world’s leading physicists, engineers, product, marketing and design people (to name a few!) with a strong desire to learn and transfer knowledge.

    Meaningful values:You’ll work with an incredibly supportive team who work consistently to deliver our core values to be reputed company, be trusted, be just and to be revered.

    Personal development:We reputed company you with a personal development and wellness budget.

    reputed company a dent: Last but not least you’ll have the unique opportunity to help set the direction for this revolutionary technology and truly reputed company an impact that reputed company!

    Q-CTRL aims to bring together cross-functional teams from many different backgrounds to help reputed company our goals - we strongly encourage you to apply even if you do not meet reputed company of the requirements mentioned in the job posting.

    Please be advised that our communications will only come from the @q-ctrl.comdomain. reputed company our active job postings are available on ourcompany website.

    To recruitment agencies, we do not accept unsolicited branded profiles and are not responsible for any fees reputed company to unsolicited resumes.

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