Applications Engineer

Infleqtion is a global quantum technology company solving the world’s most challenging problems. The company harnesses quantum mechanics to build and integrate quantum computers, sensors, and networks. From fundamental physics to leading‑edge commercial products, Infleqtion enables “quantum everywhere” through our ecosystem of devices and platforms.

We are seeking an Applications Engineer to establish and lead a new Applications Lab focused on rapid prototyping with Infleqtion’s cutting‑edge quantum technologies, including atomic clocks and quantum sensors. This hands‑on role is critical in bridging engineering and customer engagement. The ideal candidate is someone who thrives in fast‑paced, cross‑disciplinary environments and is excited by the opportunity to develop compelling technology demonstrations that directly align with market needs.

This individual will work closely with Business Development and Sales teams to identify customer interests and translate those into functional prototypes and application demos. Success in this role requires strong technical breadth, creative problem‑solving, and excellent communication skills.

• Establish, organize, and manage the Infleqtion Applications Lab to support demo development and prototyping.
• Design, build, and deploy proof‑of‑concept systems that showcase the utility of quantum products in real‑world scenarios.
• Engage directly with Sales and BD teams to interpret customer needs and shape product application narratives.
• Integrate with cross‑functional engineering teams to understand internal platforms and modify them to suit market test cases.
• Design and implement custom software to interface existing hardware platforms, integrating diverse subsystems into cohesive, demo‑ready applications.
• Develop simulations that demonstrate feasibility of application concepts and contribute to technical publications and white papers.
• Maintain and improve demo codebase and hardware infrastructure.
• Document prototypes, write test protocols, and assist in transferring successful applications to product teams.
• Support public and private demonstrations and assist in customer workshops.

• Bachelor’s degree in electrical engineering, Computer Engineering, Physics, or a related technical field (master’s degree preferred).
• 5+ years of experience in prototyping, embedded system development, or applications engineering roles.
• Strong scripting and software development experience in Python.
• Comfortable working in embedded Linux environments.
• Proven experience interfacing with hardware APIs and customizing embedded applications.
• Experience designing and building demos or customer‑facing prototypes with technical hardware.
• Ability to process, visualize, and communicate technical data clearly to technical and non‑technical stakeholders.
• Proficiency with version control systems (e.g., Git).

• Experience with React and web‑based UI development for demos.
• Experience with radar systems.
• Experience with Rust and hardware description languages (e.g., Verilog, VHDL, or similar) is a plus.
• Familiarity with simulation and modeling tools such as Simulink, MATLAB, Ansys, COMSOL, or Python‑based simulation libraries.
• Hands‑on lab experience working with high precision oscillators, RF systems, and timing standards is a plus.
• Prior experience with customer‑facing technical roles or technical sales support.
• Broad familiarity with hardware systems, including electronics, photonics, and opto‑mechanical integration.
• Comfort working in high‑urgency, fast‑turnaround environments focused on innovation.

• Great verbal and written communication skills to effectively share information with technical and non‑technical staff.
• Strong engagement and collaboration skills with constant drive for success, ownership and pride in your work.
• Sense of urgency and responsibility and a true passion for attention to detail where it matters.
• Open communication style and extremely positive attitude which shows through consistent daily habits.
• Demonstrated problem‑solving skills and fast learning rate.
• Capability of working with both a…