Infleqtion is a global quantum technology company solving the world’s most challenging problems. The company harnesses quantum mechanics to build and integrate quantum computers, sensors, and networks. From fundamental physics to leading edge commercial products, Infleqtion enables “quantum everywhere” through our ecosystem of devices and platforms. 

Location 

Infleqtion has 6 office locations, operating out of Boulder/Louisville, CO; Madison, WI; Chicago, IL; Oxford, UK; and Melbourne, AU. This position is a full-time, hybrid position which will be located in our Louisville, CO office. 

Position Summary 

Infleqtion is seeking an exceptional Principal Electrical Engineer with strong technical and people leadership experience to lead the architecture, development, and delivery of complex electronics systems supporting quantum sensors in demanding environments, with a primary focus on space-deployed systems. This role owns the end-to-end electrical design of sophisticated control, telemetry, and HW/SW electronic systems and subsystems that enable Infleqtion’s quantum products to operate reliably in mission-critical conditions. 

In this role, the Principal Electrical Engineer will lead and grow a multidisciplinary electrical engineering team, establishing clear roles, priorities, schedules, and performance expectations aligned with program objectives. The position carries accountability for technical quality, cost, and schedule, including ownership of detailed planning, proactive risk and resource management, and early problem resolution. The successful candidate will foster a strong engineering culture emphasizing accountability, professional rigor, and continuous improvement. 

The role requires close collaboration with management, researchers, systems engineers, aerospace experts, manufacturing partners, suppliers, and external subcontractors. The individual will actively engage customers and partners throughout the program lifecycle, ensuring delivery against milestones and commitments while maintaining alignment with Infleqtion’s internal product lifecycle and quality standards. Cross-disciplinary engagement is expected, with this role driving technical alignment across hardware, software, systems, and mission domains. 

This position offers a significant opportunity to influence Infleqtion’s prototype and product roadmap, shape the evolution of space-qualified quantum systems, and contribute directly to the company’s leadership in deploying quantum technologies into new and challenging environments.  

Job Responsibilities 

The duties and responsibilities outlined below include essential functions of the role. Depending on business needs, this role may perform a combination of some or all the following duties. Duties, responsibilities, and activities may change, or new ones may be assigned. 

• Management of internal and contractor teams responsible for design and delivery of electronics systems throughout the product lifecycle: concept, design, test and verification 

• Own the overall system architecture and ensure alignment with requirements and functional needs of the system 

• Presenting progress and results to senior management and the end customer 

• Overseeing and/or contributing to design of subsystems such as analog, mixed signal, microcontrollers and FPGA controllers 

• Execution of modelling, simulation, and analytical efforts required to enable product performance 

• Integration of electronics subsystems with mechanical, optical, and other subsystems 

• Identifying and engaging key suppliers 

• Following Infleqtion’s Product Lifecycle Process and supporting Phase gate reviews, critical design reviews, and executive updates 

• Supporting development of risk management plans and risk resolution, and supporting reliability analysis and continuous improvement 

• Coaching and mentoring junior engineers 

• Other duties as assigned or required 

Travel 

Up to 10% travel may be required to support off-site testing, deliveries, and integration. 

Minimum Qualifications 

• Bachelor’s degree required, with a focus in design electronics and/or embedded systems engineering 

• 10+ years of relevant and progressive experience in similar roles including electrical design 

• Experience mentoring more junior engineers and leading teams 

• Experience providing consultancy and strategic support to electrical engineering projects 

• Demonstrated ability to work and communicate with all levels of an organization; Professional-level communication skills, including verbal, written, and presentation skills 

• Demonstrated ability to work comfortably in a highly collaborative, cross-functional, team-oriented, and matrixed environment 

• Desire and demonstrated ability to thrive and produce results in a fluid, dynamic, and fast-paced environment 

• Demonstrated ability to learn new and complex topics quickly 

• Resourceful problem-solver who collaboratively identifies effective paths forward with demonstrated expertise in executing productization efforts and working in highly technical environments 

• Ability to travel domestically and (potentially) internationally up to 10% 

Desired Qualifications 

• Comfortable with a hands-on approach to engineering leadership 

• Master’s or PhD degree in electrical engineering or embedded systems engineering 

• Experience developing electronic systems for challenging non-terrestrial environments, e.g. LEO, MEO 

• Proficiency in FPGA design, implementation, and verification 

• Demonstrated ability to optimize FPGA designs for performance, power, and resource utilization in real-world applications 

• Experience in delivering new, advanced technologies to commercial markets 

• Experience in hardware DFx (design for cost, manufacturing, assembly, test, sustainment) 

• Experience working with complex systems that integrate hardware, firmware, and software. Knowledge of best practices in software engineering is a plus 

• Familiarity with complex analog circuit design 

• Familiarity with microcontrollers used in space applications 

• Familiarity with embedded firmware 

• Familiarity with quantum computing, mechanics, or physics  

• Familiarity with electro-optical design and integrated photonics 

• Active listening and presence with team members 

Working Conditions and Physical Requirements 

This position may require access to information protected under U.S. export control laws and regulations, including the Export Administration Regulations (EAR) and the International Traffic in Arms Regulations (ITAR). Please note that any offer for employment may be conditioned on authorization to receive software or technology controlled under these U.S. export control laws and regulations without sponsorship for an export license 

 
Work will normally be performed in an office and laboratory environment and around technical equipment including computers and lasers.  Able to sit, stand, bend, lift and carry up to 40 pounds without assistance.  Able to efficiently use automated office equipment such as laptops, copiers, and printers; able to effectively engage in communications (via phone, computer, or in-person).  Any required Personal Protective Equipment will be provided and must be properly used in accordance with company requirements. 

The targeted salary range for this role is 160,000 to 200,000 USD on an annualized basis plus eligibility to participate in our annual incentive plan.

In addition to your base compensation, we offer a generous Total Rewards program which includes:

• 100% company paid Employee coverage for Medical, Dental, Vision, and Short/Long Term Disability insurance programs
• Employer funded Health Savings Account
• Unlimited Paid Time Off
• 401(k) Matching Programs
• Company paid Life and AD&D Insurance
• Flexible Healthcare Savings Account
• Paid FMLA Leave
• Paid Maternity/Paternity Leave
• Employer Assistance Program
• Student Loan Repayment
• Equity Opportunity