Experimental Quantum Engineer

QuantWare

ABOUT US QuantWare is building the world’s most powerful quantum processors to solve humanity's greatest challenges. We do this with our unique VIO™ technology, the only QPU architecture that breaks the hardware barriers that have held quantum computing back, unlocking the path to MegaQubit quantum processors. With VIO, we are paving the way for the hyper-scale quantum computers that will change the world. And delivering on that vision demands people who don’t shy away from tackling the hardest challenges of our time. That’s where you come in! Our Quantum Processor Team is seeking excellent Quantum R&D Engineers to develop the next generation of processors. This role is focused on improving processor performance by developing, validating and iterating on-chip quantum components. You will take ownership of the end-to-end development cycle, creating designs, collaborating with our fabrication teams and performing cryogenic measurement to inform design iterations. These quantum components will be integrated in our large-scale QPUs. What you will be doing * Design & Simulate: Develop new and improved on-chip architectures that enhance processor performance. Contribute to integration into large, scalable processors. * Measure & Validate: Close the feedback loop by performing cryogenic measurements on your own designs to validate performance and inform design improvements. * Automate: Write and improve code to automate design, simulation, and measurement workflows. * Collaborate: Work across teams to ensure rapid design-to-test cycles Your Profile * PhD in experimental superconducting quantum computing or closely related field, or equivalent industry experience. * Experience in design and cryogenic measurement of superconducting circuits * Proficiency in Python and data analysis for quantum experiments * A proactive, detail-oriented mindset with a strong drive to scale quantum technology * You thrive in a collaborative environment and are comfortable taking ownership from day one Don't tick every box? Apply anyway. We know great candidates don't always follow a straight path, and we value diverse experience, perspectives, and ways of thinking. If this role excites you and you believe you can make an impact, we'd love to hear from you! What We Offer: At QuantWare, you’ll be part of a high-performing team of world-class experts in an ambitious, fast-moving environment. From day one, you’ll have the trust, tools, and support to do your best work. Here’s what you can expect: Competitive salary - A salary that reflects the impact and importance of the role (and of course 8% holiday allowance) Pension that’s built to last - A generous and future-proof pension plan that includes partner and dependent coverage. Flexibility built on trust - We focus on outcomes. Work flexibly, in a hybrid setup, with an open vacation policy that lets you manage your time Personal growth - We invest in your L&D, with a budget available to each team member, dependent on their individual ambitions, development needs, and performance A connected team - We make space to celebrate wins together, with team events, offsites, and spontaneous moments that bring us closer Diversity & Inclusion at QuantWare We’re an ambitious company, not only for our goals but also to become an even more diverse and inclusive team. We know this helps us with better decisions, more innovation, and strengthens our culture. In particular, we’d love to see more women in the quantum industry! So if you’re a female talent, excited about this opportunity but don’t meet every single requirement, we still encourage you to apply. As part of our recruitment process, candidates may be required to undergo pre-employment screening.

QphoX

QphoX is looking for a Quantum Application Engineer to help push our microwave-to-optics conversion technology and its application to quantum computing to the next level. In this role, you will be part of a team focussing on the development of optical interconnects for control, readout and networking of quantum processors. As a Quantum Application Engineer, you will define and articulate the performance requirements of our products, develop experiments to quantify these requirements and demonstrate the performance of our technology both internally as well as with external partners and customers. You will be involved in: * Research and development of microwave-to-optics transducer technology * Development of optical signal delivery systems for high fidelity qubit control * Planning and executing experiments to demonstrate the performance and practicality of our products, including joint demonstrations with external partners, collaborators, and customers * Analysing, summarising, and presenting experimental results through reports, presentations, and technical discussions * Collaborating closely within a diverse, multidisciplinary team of scientists and engineers Skills and knowledge you will bring to QphoX: * A masters (WO) in (applied) physics, photonics, or a related subject * 2-5 years of industry or applied research experience in one or more of the following: superconducting circuits, solid-state qubits, photonics, or a related subject * Proficiency in Python for instrumentation, data acquisition and data analysis * The ability to work collaboratively with inter-disciplinary teams * An organised and rigorous working style Our Ideal Candidate: Our ideal candidate is a passionate, hands-on experimentalist who enjoys translating technology from the lab into real-world applications. They are eager to contribute across the full journey from experiment to product — from early-stage technical development through deployment with customers, from drafting concepts to presenting results. Teamwork is an essential value of our company, hence fitting into the team is crucial. Finally, they would have to feel positive working in fast-paced learning environment. We strongly encourage people of any underrepresented group to apply as we are committed to diversity and work to build an inclusive environment where all people, regardless of gender, race, religion, or background, can thrive. Benefits and other perks of working with us: * Competitive salary * Employment stock ownership plan * End-year performance-based bonus * 25 days of holidays on a full-time basis * Career growth opportunities * Opportunities to network and connect About us: At QphoX we strive to be an inclusive place where a diverse mix of talented people want to come, to learn, to live their passion and do their best work. We are dedicated to promoting equality, creating a safe environment for everyone, and believe deeply in diversity of race, gender, sexual orientation, religion, ethnicity, national origin, age, socioeconomic background and all the other fascinating characteristics that make us different. We truly think diversity is a strength and working in a diverse environment, and being exposed to a variety of perspectives makes us stronger as a team and better human beings.

QuantWare

ABOUT US QuantWare is building the world’s most powerful quantum processors to solve humanity's greatest challenges. We do this with our unique VIO™ technology, the only QPU architecture that breaks the hardware barriers that have held quantum computing back, unlocking the path to MegaQubit quantum processors. With VIO, we are paving the way for the hyper-scale quantum computers that will change the world. And delivering on that vision demands people who don’t shy away from tackling the hardest challenges of our time. That’s where you come in! As a Quantum Design Engineer in our R&D team, you’ll be at the heart of advancing the performance and scalability of superconducting quantum processors. You’ll lead the design of next-generation qubit chips and modular, scalable QPU architecture, working from on-chip subsystem architecture to EM simulations, frequency allocation, crosstalk management, packaging, and interconnect strategies. You’ll also design and optimise nonreciprocal superconducting circuits, such as isolators and parametric amplifiers that will drive robust, high-fidelity readout chains. These designs will enhance readout signal-to-noise ratio and stability, feeding into our next-gen readout modules and ensuring seamless coupling with the qubit layer. This role is highly collaborative: you’ll work in a tight feedback loop with experimentalists and device engineers to transform measurement insights into rapid design iterations, pushing performance, coherence, yield, and manufacturability across the full qubit stack. WHAT YOU’LL BE DOING * Design and simulate cutting-edge quantum hardware to improve performance, coherence, and scalability. * Develop high-performance, manufacturable device architectures that accelerate R&D cycles and increase qubit fidelity and yield. * Architect and optimize the layout of nonreciprocal superconducting circuits such as parametric amplifiers, targeting robust performance under cryogenic conditions. * Interpret simulation results and correlate with experimental data to guide iterative design improvements. * Collaborate across teams to ensure rapid design-to-test cycles, connecting theory with experiment. * Automate the design pipeline using Python, enabling parametric device generation, simulation sweeps, and data post-processing. YOUR PROFILE * MSc in Physics, Electrical Engineering, or related field, with 2+ years of industry experience or a PhD with relevant hands-on work * Strong Python skills for automating designs, controlling simulations, and analyzing data * Experience with EM simulation and chip design tools (e.g. Ansys HFSS-Q3D, KLayout); Git and Qiskit-Metal familiarity is a plus * Knowledge of cQED devices and superconducting circuit design is a strong advantage * Experience designing nonreciprocal superconducting circuits (e.g. parametric amplifiers) or advanced readout techniques is highly valued * Solid grasp of microwave engineering, quantum noise sources, and fabrication methods Don't tick every box? Apply anyway. We know great candidates don't always follow a straight path, and we value diverse experience, perspectives, and ways of thinking. If this role excites you and you believe you can make an impact, we'd love to hear from you! What We Offer: At QuantWare, you’ll be part of a high-performing team of world-class experts in an ambitious, fast-moving environment. From day one, you’ll have the trust, tools, and support to do your best work. Here’s what you can expect: Competitive salary - A salary that reflects the impact and importance of the role (and of course 8% holiday allowance) Pension that’s built to last - A generous and future-proof pension plan that includes partner and dependent coverage. Flexibility built on trust - We focus on outcomes. Work flexibly, in a hybrid setup, with an open vacation policy that lets you manage your time Personal growth - We invest in your L&D, with a budget available to each team member, dependent on their individual ambitions, development needs, and performance A connected team - We make space to celebrate wins together, with team events, offsites, and spontaneous moments that bring us closer Diversity & Inclusion at QuantWare We’re an ambitious company, not only for our goals but also to become an even more diverse and inclusive team. We know this helps us with better decisions, more innovation, and strengthens our culture. In particular, we’d love to see more women in the quantum industry! So if you’re a female talent, excited about this opportunity but don’t meet every single requirement, we still encourage you to apply. As part of our recruitment process, candidates may be required to undergo pre-employment screening.