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Maybell Quantum · 11 hours ago

Controls & Test Engineer – Cryogenic Systems

Denver, CO

Full-time

Onsite

Mid Level

$95K/yr - $130K/yr

3+ years exp

Maybell Quantum is a venture-backed quantum hardware innovator experiencing rapid growth, building technology that will transform industries for decades to come. They are seeking an experienced Controls & Test Engineer to take ownership of embedded controls, system automation, and testing workflows in a fast-paced hardware-based startup environment.

Hardware

No H1B

Responsibilities

Design and program embedded systems for active thermal control, diagnostics, and telemetry

Develop closed-loop control algorithms (e.g., PID for temperature/pressure regulation)

Create and maintain SCADA or HMI interfaces for system monitoring and control

Design circuits for sensor integration, heater actuation, valve control, and interlock logic

Capture and analyze test data; contribute to system performance optimization and root-cause analysis

Support troubleshooting and validation of prototype hardware in a lab environment

Maintain documentation for testing, data logs, and failure analysis

Work closely with the broader design team to integrate sensors, actuators, and control logic into the overall system architecture, ensuring the final product meets performance and reliability targets

Qualification

Embedded control systemsPID control designPythonC/C++Thermodynamic systemsCryogenic systemsDAQ hardware/softwareHigh voltage wiringElectrical panel designVacuum systemsTroubleshooting skills

Required

Degree in Electrical Engineering, Mechanical Engineering, Physics, or related field

3+ years of hands-on experience with embedded control systems

Experience integrating sensors and actuators into system designs

Familiarity with Python or C/C++ for embedded development

Strong troubleshooting skills with electronics and controls software

Preferred

Proficiency in PID control loop design for thermal/fluid systems

Understanding of thermodynamic systems

Experience with cryogenic systems such as dilution refrigerators, ³He systems, or pulse tubes

Familiarity with DAQ hardware and software

Experience with high voltage wiring

Electrical panel design to UL/NFPA/ATEX codes

Comfort working with vacuum systems, cryostats, or experimental thermal equipment

Benefits

Health, dental, and vision insurance

401(k) matching

Flexible PTO policy

Company

Maybell Quantum

Building the infrastructure for a quantum future so you can cool more with less Our mission is to deliver the world’s best tools to solve the toughest quantum challenges, offering solutions that are more accessible, reliable, and affordable while building a work force and supply chain that advance U.S.

Founded in 2021

Denver, Colorado, USA

11-50 employees