Controls & Test Engineer – Cryogenic Systems

Controls & Test Engineer – Cryogenic Systems

Join Maybell Quantum as a Controls & Test Engineer to own embedded controls, system automation, and testing workflows in a fast‑paced quantum hardware startup.

Maybell Quantum is redefining the future of computing by building the hardware foundation for the next 30 years of quantum revolution. The Controls & Test Engineer will design and implement real‑time control systems for thermal and fluid hardware, integrate sensors and actuators, and validate performance in cryogenic test environments.

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

• 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

• 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

• Base Salary: $95k–$130k plus equity, bonus, and overtime pay
• Benefits: Health, dental, vision, 401(k) matching, flexible PTO, and more
• Growth: Significant opportunities for career advancement and professional development
• Impact: Direct influence on the success of a revolutionary technology company
• Team: Collaboration with world‑class scientists, engineers, and leaders shaping a new industry

Maybell Quantum is dedicated to building a diverse, inclusive, and authentic workforce. If you are excited about this role but your experience does not align perfectly, we still encourage you to apply. At this time we do not provide visa sponsor ships.