What are the responsibilities and job description for the Cryogenic Semiconductor Characterization Engineer - 652 position at Quantinuum?
We are seeking a Cryogenic Semiconductor Characterization Engineer to join our Broomfield, 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:
By uniting best-in-class software with high-fidelity hardware, our integrated full-stack approach is accelerating the path to practical quantum computing and scaling its impact across multiple industries.
By joining Quantinuum, you’ll be at the forefront of this transformative revolution, shaping the future of quantum computing, pushing the limits of technology, and making the impossible possible.
What’s in it for you?
A competitive salary and innovative, game-changing work
Flexible work schedule
Employer subsidized health, dental, and vision insurance
401(k) match for student loan repayment benefit
Equity, 401k retirement savings plan 12 Paid holidays and generous vacation sick time
Paid parental leave
Employee discounts
Quantinuum is an equal opportunity employer. You will be considered without regard to age, race, creed, color, national origin, ancestry, marital status, affectional or sexual orientation, gender identity or expression, disability, nationality, sex, or veteran status. Know Your Rights: Workplace discrimination is illegal
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.
Compensation & Benefits:
Non-Incentive Eligible
The pay range for this role is $113,000 - $141,000 annually. Actual compensation within this range may vary based on the candidate’s skills, educational background, professional experience, and unique qualifications for the role.
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
- Bachelor’s degree minimum required
- 4 years of experience in an engineering or R&D environment minimum required
- 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.
- Due to national security requirements imposed by the U.S. Government, candidates for this position must not be a People's Republic of China national or Russian national unless the candidate is also a U.S. citizen.
- Master’s or PhD in Electrical Engineering or a related field preferred
- 5 years of industry experience in engineering or R&D
- Hands-on experience with low-noise analog electronics
- Strong understanding of EMI/EMC, grounding, and return current paths in sensitive systems
- Experience with ASIC development and testing
- Strong Python skills for automation and data analysis
- Familiarity with the electrical engineering challenges of quantum computers, ion traps, or similar ultra-sensitive systems
- Clear communicator who produces right-sized, effective design and test documentation
By uniting best-in-class software with high-fidelity hardware, our integrated full-stack approach is accelerating the path to practical quantum computing and scaling its impact across multiple industries.
By joining Quantinuum, you’ll be at the forefront of this transformative revolution, shaping the future of quantum computing, pushing the limits of technology, and making the impossible possible.
What’s in it for you?
A competitive salary and innovative, game-changing work
Flexible work schedule
Employer subsidized health, dental, and vision insurance
401(k) match for student loan repayment benefit
Equity, 401k retirement savings plan 12 Paid holidays and generous vacation sick time
Paid parental leave
Employee discounts
Quantinuum is an equal opportunity employer. You will be considered without regard to age, race, creed, color, national origin, ancestry, marital status, affectional or sexual orientation, gender identity or expression, disability, nationality, sex, or veteran status. Know Your Rights: Workplace discrimination is illegal
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.
Compensation & Benefits:
Non-Incentive Eligible
The pay range for this role is $113,000 - $141,000 annually. Actual compensation within this range may vary based on the candidate’s skills, educational background, professional experience, and unique qualifications for the role.
Salary : $113,000 - $141,000