Chief Technology Officer

Qubibyte; San Francisco, Northern (CA, KY); Hybrid; USD 200,000 - 400,000; Full time

Job summary

Qubibyte is seeking a permanent Chief Technology Officer to guide the Technology Department across hardware and software domains. The role is full-time and onsite in San Francisco, reporting to the CEO. Details are available on the careers page.

Founded around the Quadra quantum platform, the company emphasizes hardware development, language tools, simulators, and AI-assisted circuit design. The CTO will drive strategy and oversee cross-disciplinary teams in a fast-growing field.

Responsibilities

• Lead the technology department and execute the product roadmap.

Job description

The Technology Department is where Qubibyte's products are designed and built. Its hardware work is the Qubibyte Quadra, a four-qubit liquid-state NMR quantum computer that runs at room temperature on a desk and is planned for release in the first quarter of 2027 at a target price of $800.

Areas of Work

Hardware The Quadra: permanent magnets, transceiver coil, RF generation, signal chain, control tier, and probe network, with interchangeable sample vials for one to four qubits.

Language Qubi, a quantum programming language with a written reference manual, worked examples, a tutorial series, and a certification exam.

Simulators The Quantum Circuit Simulator, with Bloch spheres, state vectors, measurement statistics, data analysis, a gate creator, parametric sweeps, and an NMR mode, plus the NMR spectrometer, classical logic, route, and stock tools.

QubiAI The assistant inside the Qubi editor that turns a plain English description of a circuit into runnable Qubi code.

Research Algorithm work such as the Rosenthal's Algorithm note on quantum search by decomposition, published with its comparison against Grover's algorithm.

Open Position

Trent Rosenthal has led this department on an acting basis since November 23rd, 2025, alongsidehis role as Chief Executive Officer. Qubibyte is hiring a permanentChief Technology Officer. The position is full-time and onsite in San Francisco, and the detailsare on the careers page .