Q-CTRL

Backend Engineer

• Build the backbone of quantum tech: Design, develop, and optimize scalable backend services in Python.
• Own the compiler stack: Maintain and evolve the compiler that translates OpenQASM3 + OpenPulse programs into low-level controller instructions.
• Bridge research and engineering: Work closely with world-class researchers and quantum engineers, translating experimental needs into production-ready code and debugging real-world execution challenges.
• Experiment on quantum hardware: Get hands-on with QPUs, validating compiler output and controller behaviors through real device experiments.
• Engineer for performance: Deliver high-efficiency service-to-service communication using modern protocols (gRPC, GraphQL, REST).
• Raise 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 next generation 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 within the Employee's skills and experience, or with reasonable training.

Senior Software Engineer – Back-end

Research Scientist

• Perform cryogenic measurements and characterization of superconducting qubits.
• Invent, implement and test novel control protocols for tuning and optimizing two-qubit gates.
• Develop scalable protocols for processor-wide optimization (e.g. cross-talk mitigation, leakage reduction, defects mitigation), and real-time retuning.
• Collaborate with your colleagues in the engineering and product teams to translate ideas and research outcomes into production-level software.
• Explain, document and present research solutions in accessible language.

Senior Research Scientist, Superconducting Qubits

• Perform cryogenic measurements and characterization of quantum dot-based qubits.
• Invent, implement and test novel control protocols for all the required bring-up steps starting from coarse tuning to optimizing two-qubit gates.
• Develop scalable protocols for processor-wide optimization (e.g. cross-talk mitigation, leakage reduction, defects mitigation), and real-time retuning.
• Collaborate with your colleagues in the engineering and product teams to translate ideas and research outcomes into production-level software.
• Explain, document and present research solutions in accessible language.

Senior Research Scientist, Silicon Qubits

• Working with the team and the department head on establishing strategic research roadmap and OKRs.
• Perform cryogenic measurements and characterization of quantum dot-based qubits.
• Invent, implement and test novel control protocols for all the required bring-up steps starting from coarse tuning to optimizing two-qubit gates.
• Oversee development of scalable protocols for processor-wide optimization (e.g. cross-talk mitigation, leakage reduction, defects mitigation), and real-time retuning.
• Collaborating with the product manager and engineering team manager to ensure timely deliverables for the Boulder Opal product.
• Explain, document and present research solutions in accessible language.

Lead Research Scientist, Silicon Qubits

People Operations

• Own and improve the day to day processes and cadence of the overall People Operations team.
• Generate people metrics reporting, assisting to share actionable insights with managers and broader People Ops team.
• Improve overall people experience and staff retention in your functional group, working closely with managers and employees to drive a culture of continuous feedback and improvement.
• Provide support and guidance across the full employee lifecycle for your client group (onboarding through separation).
• Continue to build out engaging tools to allow our staff to self-help and scale appropriately.
• Play an active role in managing staff performance for your functional group and own HRIS and employee records to streamline and automate people processes.
• Act as the ‘on the ground’ People team liaison for our USA-based team, including benefits administration.
• Stay across employment legislation for your assigned jurisdiction, and assist to ensure people related processes are refined in line with changing laws.
• Assist People Operations Manager with cyclical activities such as annual and mid year performance review, compensation review, compensation benchmarking, and eNPS (annual employee engagement survey).
• Other duties within the Employee's skills and experience, or with reasonable training.

Senior People Operations Specialist

Mechanical Engineer

• Own the design, development, integration and support of our quantum sensors, from requirements through to detailed mechanical design and testing.
• Design mechanical parts of sensors including laser systems, ultra-high vacuum (UHV) systems, and structural components to connect it all together.
• Work in close collaboration with research scientists, engineers and stakeholders to assist scientific advancement and to make our technology work robustly in the field.
• Participate in full lifecycle of quantum technology: design, prototyping, testing, verification and validation, and field demonstrations.
• Be part of the team responsible for integration, test and validation of newly commissioned sensors and support critical quantum sensing field trials with key industry partners.
• Understand and apply industry standards when needed.

Senior Mechanical Engineer

Engineer

• We are seeking a Senior RF Engineer to join the Hardware team within the Quantum Sensing division at our laboratories in Sydney, Australia. This role will support development of new quantum sensor prototypes and products by developing custom microwave/RF electronics and antenna systems. Reporting to the Lead Engineer (Hardware), the RF Engineer will contribute to our rapidly growing efforts to deploy software-ruggedised quantum gravimeters, accelerometers, and magnetometers.
• You will be part of an established and growing team focused on quantum sensing for a variety of industry sectors such as Aerospace, Defence, geophysical exploration and Earth observation.
• Responsible for developing custom RF & microwave electronics for quantum sensor prototypes and eventual productisation.
• Designing miniaturised RF electronics subsystems based on demonstrated bench-top prototypes.
• Modelling and simulating microwave/RF signal transmission in order to optimise system performance.
• Designing, optimising, and fabricating custom antennas for near-field operation.
• Ensure electronics systems are ruggedised for operation in the field.
• You will manage the delivery of complex hardware prototypes, taking responsibility for the technical quality, performance, and reliability of the hardware.
• As an individual contributor, you will be the domain expert for RF electronics and systems.
• As a senior member of the Sensing Hardware team, you will be leading and mentoring hardware engineers and technicians.
• Other duties within the Employee's skills and experience, or with reasonable training.

Senior RF Engineer

• Q-CTRL is a product-led global leader in quantum, using control to improve hardware performance and accelerate practical quantum technologies.
• Design and build a scalable, high-performance backend system while contributing to quantum controller infrastructure.
• Maintain and evolve the compiler stack that translates OpenQASM3 + OpenPulse programs into low-level controller instructions for QPUs.
• Collaborate with cross-functional teams (research, product, infrastructure, frontend) to ship SDKs and cloud-based offerings.
• Experiment on quantum hardware to validate compiler output and controller behaviors.
• Engineer for performance using modern protocols (gRPC, GraphQL, REST) and enforce best practices, testing, and documentation.
• Help define software practices, tools, and design patterns for next-generation quantum control systems.

Software Engineer, Backend

• At Q-CTRL, we’re pioneering the future of quantum technology. Our Applications and Algorithms team is seeking a Senior Research Scientist to design and implement quantum algorithms and workflows that underpin our product offerings and external demonstrations.
• This role centers around quantum error correction (QEC) research. You’ll collaborate closely across research and engineering teams to produce high impact research and publication and to translate scientific advances into high-impact software solutions. This is your opportunity to work at the forefront of quantum computing, driving real-world innovation in a rapidly evolving field.
• As a Research Scientist, you’ll be responsible for developing solutions for quantum technologies and deploying them in the Q-CTRL product suite.