← All jobs in United States

Unlimited leave · Systems Engineer

Lead Systems Engineer-Terestrial Quantum Gravity Gradiometer - QGG

Infleqtion · Louisville · United States

Full time Posted Open until 18 Oct 2026

The job, in the employer's words

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. 

We are seeking a technically exceptional and mission-driven Lead Systems Engineer to lead the end-to-end technical execution of a cutting-edge terrestrial gravity sensing development and productization program. As the technical authority, you will ensure that all engineering activities align with mission objectives, meet customer requirements, and integrate effectively across disciplines. The LSE will partner with project and portfolio leadership and help build a capable R&D and productization team with the mission of deploying quantum gravity and gravity gradiometer sensors in diverse terrestrial environments, including subsurface, surface, and airborne vehicles.  

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. 

  • Serve as the ultimate technical authority for the program, owning the end-to-end system design and architecture. 
  • Make final decisions on key trade-offs, technical issues, and risk mitigations. 
  • Growing a team and mentoring junior engineers and ICs with diverse skillsets across systems, mechanical, thermal, opto-mechanical, electrical, embedded control systems, and software. 
  • Coordinate and collaborate with quantum sensing subject matter experts to convert neutral atom sensing modalities into realizable, deployable, and higher performing mobile quantum gravity sensors 
  • Foster a collaborative and high-performance engineering culture. 
  • Approve the system-level V&V strategy, including test plans, procedures, and success criteria. 
  • Work closely with the Program Manager to ensure technical execution supports cost and schedule objectives. 
  • Support ECP development, design-to-cost efforts, EAC reviews, and strategic technology roadmapping. 
  • Ensure the system is technically ready for major test campaigns and mission use. 
  • Identify, own, and drive resolution of high-impact technical risks and issues. 
  • Lead root cause analysis and corrective actions for anomalies and failures. 
  • Champion technical excellence and rigorous engineering processes.  Utilize experience during program execution to support continuous improvement of company engineering principles, practices, and procedures. 
  • Communicate technical progress, risks, and trade studies with transparency and confidence.

Requirements

  • Bachelor’s degree in Aerospace Engineering, Systems Engineering, Physics, Electrical/Mechanical Engineering, or a related field. 
  • Minimum of 6+ years of experience in engineering roles supporting aerospace or spaceflight systems. 
  • Proven experience as a technical lead or chief engineer on a complex, multi-disciplinary development program. 
  • Deep understanding of the full product development lifecycle, from concept through launch and operations. 

Preferred Qualifications 

  • Master’s or Ph.D. in a relevant technical field. 
  • Prior experience as a technical expert on developmental deployed sensing systems, particularly in RF, EO/IR, or related missions. 
  • Expertise with Model-Based Systems Engineering (MBSE) tools (e.g., Cameo, SysML). 
  • Experience with system-level testing in TVAC, EMI/EMC, or Vibe environments. 
  • Active TS/SCI clearance, or ability to obtain or maintain a U.S. Government security clearance (Secret or higher). 

Benefits

  • Salary Range: per year 155000-210000
  • 100% company-paid medical, dental, vision, short/long-term disability  
  • Employer-funded Health Savings Account  
  • Unlimited PTO  
  • 401(k) match  
  • Company-paid Life and AD&D Insurance  
  • Flexible Savings Account  
  • Paid FMLA, Maternity/Paternity Leave  
  • Employee Assistance Program  
  • Student Loan Repayment 
  • Equity Program

Notice to Recruitment Agencies:

Infleqtion does not accept unsolicited resumes from agencies. Infleqtion is not responsible for any fees related to unsolicited resumes.

Benefits mentioned

  • Salary Range: per year 155000-210000
  • 100% company-paid medical, dental, vision, short/long-term disability
  • Employer-funded Health Savings Account
  • Unlimited PTO
  • 401(k) match
  • Company-paid Life and AD&D Insurance
  • Flexible Savings Account
  • Paid FMLA, Maternity/Paternity Leave
  • Employee Assistance Program
  • Student Loan Repayment
  • Equity Program

Requirements mentioned

  • Bachelor’s degree in Aerospace Engineering, Systems Engineering, Physics, Electrical/Mechanical Engineering, or a related field.
  • Minimum of 6+ years of experience in engineering roles supporting aerospace or spaceflight systems.
  • Proven experience as a technical lead or chief engineer on a complex, multi-disciplinary development program.
  • Deep understanding of the full product development lifecycle, from concept through launch and operations.
  • Preferred Qualifications
  • Master’s or Ph.D. in a relevant technical field.
  • Prior experience as a technical expert on developmental deployed sensing systems, particularly in RF, EO/IR, or related missions.
  • Expertise with Model-Based Systems Engineering (MBSE) tools (e.g., Cameo, SysML).
  • Experience with system-level testing in TVAC, EMI/EMC, or Vibe environments.
  • Active TS/SCI clearance, or ability to obtain or maintain a U.S. Government security clearance (Secret or higher).

No Mondays shows this listing as the employer published it. Check the details on the employer's site before you apply.

More unlimited leave jobs in United States

Tomorrow.io · Golden · yesterday

Sr Satellite Systems Engineer

Tomorrow.io is a leading weather intelligence and climate resilience platform helping organizations and governments make better decisions in a world of increasing weather…

Unlimited leaveFlexible hoursUSD 130k–165k / year
Ursa Major · Berthoud · yesterday

Staff Systems Engineer - Safety & Reliability

The future of aerospace and defense starts here. Ursa Major was founded to revolutionize how America and its allies access and apply high-performance propulsion, from hyp…

Unlimited leaveUSD 156k–195k / year
Sweetgreen · Los Angeles · 2 days ago

Retail Technology Systems Engineer

Retail Technology Systems Engineer Sweetgreen is on a mission to build healthy communities by connecting people to real food. We passionately believe that real food shoul…

Unlimited leaveUSD 105k–150k / year
OneTrust · Atlanta · 4 days ago

Senior AI Systems Engineer

Strength in Trust OneTrust’s mission is to enable innovation through the responsible use of data and AI. We believe that ensuring data is trusted shouldn’t slow teams dow…

Unlimited leave
CHAOS Industries · El Segundo · 6 days ago

Principal Systems Engineer

CHAOS Industries is redefining modern defense with a multi-product portfolio that gives the ultimate advantage—domain dominance. The company's products are powered by Coh…

Unlimited leaveUSD 198k–320k / year
CHAOS Industries · El Segundo · 6 days ago

Principal Mechanical Systems Engineer - IPT Lead

CHAOS Industries is redefining modern defense with a multi-product portfolio that gives the ultimate advantage—domain dominance. The company's products are powered by Coh…

Unlimited leaveUSD 198k–300k / year

6,163 live roles · See all →

Other roles at Infleqtion

Infleqtion · Kidlington · 2 days ago

Quantum Software Engineer - Algorithms & Applications

ABOUT THE COMPANY Infleqtion is a global quantum technology company solving the world’s most challenging problems. The company harnesses quantum mechanics to build and in…

Unlimited leave
Infleqtion · Louisville · 3 days ago

Senior Counsel - Government Contracts

Infleqtion is a global quantum technology company building quantum computers, sensors, and networks for commercial, industrial, and national security applications. As a p…

Unlimited leaveUSD 220k–270k / year
Infleqtion · Louisville · 3 days ago

Senior Counsel - Commercial & Strategic Transactions

Infleqtion is a global quantum technology company building quantum computers, sensors, and networks for commercial, industrial, and national security applications. As a p…

Unlimited leaveUSD 220k–270k / year
Infleqtion · Louisville · 3 days ago

Cloud Infrastructure Engineer - IT

Infleqtion is seeking an experienced Cloud Infrastructure Engineer to join our Information Technology team. This role is responsible for the engineering, administration, …

Unlimited leave
Infleqtion · Louisville · 4 days ago

Accounts Payable Manager - Finance and Accounting

Accounts Payable Manager About Infleqtion Infleqtion is a global quantum technology company solving the world’s most challenging problems. The company harnesses quantum m…

Unlimited leave
Infleqtion · Louisville · 8 days ago

Accounts Payable Specialist

Infleqtion is a global quantum technology company solving some of the world’s most challenging problems. We build and integrate quantum computers, sensors, and networks. …

Unlimited leave

49 live roles · See all →

Remote share — Systems Engineer jobs in United States

57% are remote

90 of 157 jobs we have listed

How long they stay open — Systems Engineer jobs in United States

50 days median time open before the listing ended

Based on 20 ended listings

Advertised pay — Systems Engineer jobs in United States

USD 177k median advertised pay / year

Middle half: USD 146k – USD 211k

From 123 listings that state pay