We are seeking aCryogenic Semiconductor Characterization Engineer to join ourBroomfield, CO, team and play a hands-on role in developing Quantinuum’s next-generation Apollo and Lumos quantum computers. This is a rare opportunity for an early-to-mid-career physicist or engineer to stand up, own, and operate cryogenic semiconductor characterization from the ground up, directly shaping the technologies that power our system roadmap.
In this role, you won’t just run tests—you’ll define the cryogenic characterization strategy, build the infrastructure, and drive execution across multiple systems and technologies. You’ll work side-by-side with ASIC designers, system architects, and experimental physicists in a fast-paced R&D environment where initiative, creativity, and technical depth truly matter.
If you’re excited by complex hardware, ultra-low-temperature physics, and seeing your work make it into real quantum machines, this role is for you.
We are seeking aCryogenic Semiconductor Characterization Engineer to join ourBroomfield, CO, team and play a hands-on role in developing Quantinuum’s next-generation Apollo and Lumos quantum computers. This is a rare opportunity for an early-to-mid-career physicist or engineer to stand up, own, and operate cryogenic semiconductor characterization from the ground up, directly shaping the technologies that power our system roadmap.
In this role, you won’t just run tests—you’ll define the cryogenic characterization strategy, build the infrastructure, and drive execution across multiple systems and technologies. You’ll work side-by-side with ASIC designers, system architects, and experimental physicists in a fast-paced R&D environment where initiative, creativity, and technical depth truly matter.
If you’re excited by complex hardware, ultra-low-temperature physics, and seeing your work make it into real quantum machines, this role is for you.
Key Responsibilities:
Own cryogenic semiconductor characterization end-to-end, from roadmap definition to daily lab execution
Partner with integrated product teams to implement and validate ASICs critical to Quantinuum’s quantum computer roadmap
Design and develop electrical interfaces, fixtures, and test equipment for cryogenic environments
Automate test execution and data analysis to enable fast, repeatable insight
Synthesize test results, understand their impact and present physics, engineers, and leadership
Operate and manage cryogenic test chambers and associated lab infrastructure
Translate system-level quantum computer requirements and customer needs into clear, verifiable test plans
Thrive in a rapid-prototyping, R&D-focused environment where iteration speed matters
YOU MUST HAVE:
3+ years developing test equipment and executing test plans to validate and characterize digital and analog circuits minimum required
2+ years of hands-on experience with cryogenic test chambers minimum required
Due to Contractual requirements, must be a U.S. Person defined as, U.S. citizen permanent resident or green card holder, workers granted asylum or refugee status.
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