Senior Quantum Software Engineer, (Back-end)
Q-CTRL Pty. Ltd.
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Benefits offered by this job
Job summary
Qualifications
- 5+ years of backend engineering experience with Python, Rust, C++, or similar.
- Collaborative track record to solve technical challenges.
- Proactive in ownership-driven mindset.
Responsibilities
- Design, develop, and optimize scalable backend applications in Python.
- Create high-efficiency service-to-service communication.
- Translate research code into production-ready solutions.
Skills
Tools
Job description
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 pathways 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 achieve 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 IBM Quantum Services, natively integrating our performance management software with all IBM quantum computers. Building off of this relationship, in September 2024 we started offering two services via IBM’s new Qiskit Functions Catalog as an inaugural partner.
- Designed and moved our Global HQ offices and lab space into the first purpose-built (and award winning) commercial and research facility for a quantum technology company in Australia.
- Continued to deliver real world outcomes across the quantum sectors, with our work with Australian Defence on software-ruggedized quantum sensing for navigation without GPS, as featured in the New York Times.
- 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 presence 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 next generation of quantum sensors, to delivering massive performance gains for end-users, it all starts with hiring the right talent. If you want to help us build the Quantum future, read on.
As a Senior Back-end Engineer on the Boulder Opal Scale Up team, you’ll be at the forefront of building the software backbone that powers the future of quantum technology. You’ll work side by side with brilliant engineers and researchers, designing and delivering scalable, high-performance systems that bring groundbreaking science into the real world.
From SDKs to cloud-based platforms, your work will shape the tools researchers and customers use every day. You’ll not only develop world-class backend systems but also help translate cutting-edge research into production-ready solutions, bridging the gap between quantum experiments and reliable software.
If you’re excited about building robust systems, tackling complex problems, and exploring the edge where software meets quantum physics, this is your opportunity to make a real impact in one of the most exciting fields in technology today.
- Build impactful systems: Design, develop, and optimize scalable backend applications in Python that power real-world quantum technology.
- Engineer for performance: Create high-efficiency service-to-service communication using modern protocols.
- Bridge science and engineering: Work hand-in-hand with researchers to translate cutting-edge research code into production-ready solutions, while sharing engineering best practices.
- Deliver end-to-end solutions: Partner with product, frontend, and infrastructure teams to ship integrated features used across Q-CTRL’s products.
- Champion quality: Implement and enforce best practices for code quality, security, and operational excellence.
- Solve tough problems: Troubleshoot, optimize, and enhance system performance and reliability at scale.
- Shape reusable architectures: Develop product features that promote flexibility, reuse, and scalability across multiple business cases.
- Contribute broadly: Take on other responsibilities aligned with your skills and experience and grow into new ones with support and training.
- Other duties within the Employee's skills and experience, or with reasonable training.
- 5+ years of backend engineering experience with Python, Rust, C++, or similar.
- A track record of collaborating across research and engineering to solve hard technical challenges.
- Strong problem-solving skills and a proactive, ownership-driven mindset.
- Excellent communication and teamwork skills across agile, cross-functional groups.
- Experience designing and implementing efficient algorithms, statistical models, or large-scale data pipelines.
- Hands-on experience with modern APIs (gRPC, GraphQL, REST).
- Exposure to cloud platforms (AWS, GCP, Azure) and infrastructure management.
- Knowledge of database optimization, distributed systems, or microservices.
- Familiarity with Python web frameworks like Django, Flask, or FastAPI.
- Experience building frameworks or tools for complex computational systems (e.g., calibration, signal processing, or scientific computing).
- Understanding of data modeling for scalable and efficient processing.
- Curiosity or knowledge of quantum physics/quantum computing.
- A background in start-up or scale-up environments where speed and agility are key.
- Skills in data visualization using Plotly, Dash, or Jupyter.
The base salary for this position is targeted between $135,000 - $213,000 and will ultimately be determined by specific job-related skills, experience, level, location and other contributing factors. Depending on the position offered, this role may be eligible for annual discretionary bonuses, equity and other forms of compensation outside of the targeted range. For more information on benefits at Q-CTRL, please visit our careers page at https://q-ctrl.com/careers.
We embrace workplace flexibility so you worry more about your impact vs a rigid work schedule.
You’ll get to have the start-up impact without the start-up wages.
We want people to have a sense of ownership in what they do and offer the potential for equity share and annual bonuses.
We recognize exceptional performance and impact by offering annual discretionary cash bonuses.
We are well funded by the world’s best technology investors, letting us chase our ambitions with minimal constraints.
We offer paid parental leave to support you and your loved ones.
We’re an equal opportunity employer and actively support initiatives like the ‘Global Women in Quantum’ program to help expand the quantum workforce.
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.
You’ll work with an incredibly supportive team who work consistently to deliver our core values to be real, be trusted, be just and to be revered.
We provide you with a personal development and wellness budget.
Last but not least you’ll have the unique opportunity to help set the direction for this revolutionary technology and truly make an impact that matters!
Qualified applications with arrest or conviction records will be considered for employment in accordance with the Los Angeles County Fair Chance Ordinance for Employers and the California Fair Chance Act.
Please be advised that our communications will only come from the @q-ctrl.com domain. All our active job postings are available on our company website.
To recruitment agencies, we do not accept unsolicited branded profiles and are not responsible for any fees related to unsolicited resumes.
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