Quantum Systems Architect

Our mission: Qblox is a deep-tech scaleup headquartered in Delft, the Netherlands, with a second office in Boston. We provide advanced quantum control stacks to research labs, quantum startups, and industry leaders. Our hardware and software sit close to quantum chips, giving experimentalists precise control and readout capabilities across complex quantum systems. Your mission: Architecting the Quantum Control Stack We are seeking a Quantum System Architect with a dedicated focus on the Quantum Control Stack. In this role, you will be the mastermind behind the critical bridge connecting high-level quantum algorithms to the precise physical pulses that manipulate qubits. You will contribute to the architecture of our control hardware and software layer, ensuring low-latency execution, precise pulse shaping, and real-time feedback loops. A core responsibility will be defining rigorous system requirements and utilizing modeling frameworks to predict control stack behavior, ensuring our classical infrastructure scales seamlessly with expanding qubit counts. Key Responsibilities • Architecture & Performance • Control Stack Architecture: Support the design and optimization of the end-to-end quantum control stack, spanning from the quantum compiler/runtime environment down to the digital-to-analog converters (DACs). • Real-Time Latency: Architect ultra-low-latency feedback and execution paths, allocating strict timing budgets to support various quantum applications. • Control Scaling & Signal Distribution: Drive the strategy for channel scaling and signal multiplexing across various environments, solving channel density, thermal load, and cabling bottlenecks. 2. Systems Engineering & Co-Design • Requirements Management & Flowdown: Capture, author, and flow down top-level system performance targets into verifiable sub-system requirements for RF/microwave hardware, FPGA firmware, and software teams. • Cross-System Boundaries: Define cross-system boundaries and co-design strategies across hardware, firmware, and software. • Cross-Functional Co-Design: Partner closely with firmware leads, quantum physicists, and software teams to determine the optimal partitioning of execution logic across classical runtimes and real-time FPGA hardware. • System Evolution: Guide the validation, integration, and continuous evolution of scalable quantum computing platforms. The Stack You Will Architect & Model You will be responsible for defining the requirements, interfaces, and data flow across the following layers: • The Software/Compiler Layer: Translating quantum circuits into precise timing and pulse schedules. • The Digital Control Layer: FPGA/ASIC microarchitectures handling instruction decoding and sequencing. • The Analog/RF Layer: Up/down conversion, IQ mixing, and routing of microwave signals to the QPU.