We are seeking a Principal Systems Engineer for our Broomfield, CO location, to join the team developing a next-generation quantum computer. The ideal candidate will be a comprehensive systems engineering professional with a background in physics or engineering. This role will be responsible for guiding the system through its entire lifecycle—from initial conceptualization and design through detailed development, rigorous validation, and product release. By facilitating cross-team collaboration, integrating technical insights, and maintaining a holistic view of the project's technical scope, this role will be instrumental in bridging the system’s architectural vision with practical implementation. Candidates should expect to be immersed in a fast-paced, team-based, and challenging technical environments where an individual with talent and initiative can stand out and thrive.

• Develop, define, and manage system requirements, specifications, and engineering documentation for a future generation trapped-ion quantum computer; track progress and compliance across multiple teams to these requirements and documents.
• Create and execute the System Engineering Management Plan (SEMP) for a next-generation quantum computer
• Enable the cohesive design of a large next-generation quantum computer by defining the physical and functional breakdown between subsystems, defining interfaces between subsystems, and writing interface control documents (ICDs).
• Work with technical and program management teams to develop “right size” tools, change-management processes, version control, architecture documentation, and artifacts appropriate to the maturity of the technology.
• Work with subsystem leads and other systems engineers to define, derive, organize and communicate requirements for each quantum computer subsystem
• Work with subsystem leads, architects, and other systems engineers to complete and document key design trade studies.
• Track risk assessments and risk mitigation efforts.
• Help organize and conduct system design reviews, ensuring artifacts are updated and accessible.
• Communicate complex technical concepts to both technical and non-technical stakeholders, ensuring clear understanding and buy-in.
• Work closely with quantum physicists and electrical, optical, mechanical, and software engineers to align cross-functional goals.
• Mentor junior engineers

• Bachelor’s degree minimum
• 10+ years of experience in systems engineering, hardware design, system integration, or scientific R&D, inclusive of PhD or post-doctoral experience.
• 2+ years of experience in a systems engineering role.
• 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 Degree/Ph.D. in Physics, Engineering or related technical field preferred
• Proven experience in system engineering or system architecture of highly complex, large-scale technologies (e.g., quantum computers, atomic clocks, spacecraft, semiconductor manufacturing equipment, or other multidisciplinary hardware systems)
• Experience deconstructing highly complex systems into clear and comprehensible constituent pieces and work packages
• Strong background in requirements engineering, system verification, and validation processes
• Familiarity with Model Based System Engineering (MBSE)
• Prior experience with laser-cooled, neutral atom, or atomic ion scientific apparatus or quantum computers
• Prior experience with complex laser systems incorporating electro-optic and/or acousto-optic modulators
• Knowledge of cryogenic systems and/or optical systems
• Experience leading multi-disciplinary teams integrating mechanical, electrical, and software subsystems
• Proficiency in system modeling, simulations, and analysis tools
• Demonstrated leadership skills
• Experience with Python, MATLAB, C++, or related languages
• Ability to build strong relationships and effectively partner with others
• Strong verbal and written communication skills

Compensation & Benefits:

Incentive Eligible – Range posted is inclusive of bonus target

The pay range for this role is $180,000 – $225,000 annually. Actual compensation within this range may vary based on the candidate’s skills, educational background, professional experience, and unique qualifications for the role.

Quantinuum is the world leader in quantum computing. The company’s quantum systems deliver the highest performance across all industry benchmarks. Quantinuum’s over 650 employees, including 400+ scientists and engineers, across the US, UK, Germany, and Japan, are driving the quantum computing revolution.

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.

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

Applications will be accepted on an ongoing basis, there is no application deadline for this position.