Mechanical Engineer

Infleqtion is a global quantum technology company solving some of the world’s most challenging problems by building and integrating quantum computers, sensors, and networks. The QGG Pathfinder program brings together atomic physics, aerospace hardware, electronics, software, supply chain, and mission assurance to mature a flight-relevant quantum gravity gradiometer payload. Position Summary Infleqtion is seeking a Mechanical Engineer II to support QGG mechanical design, drawings, tooling, fixtures, and low-complexity part ownership. This role is ideal for a hands-on engineer who enjoys converting technical direction into clean CAD models, released drawings, buildable parts, and practical tooling that helps a complex aerospace quantum payload move from design into integration. 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 of the following duties. Duties, responsibilities, and activities may change, or new ones may be assigned at any time with or without notice. Create and revise CAD models and mechanical drawings for QGG parts, tooling, fixtures, brackets, covers, adapters, and low-complexity assemblies. Support opto-mechanical, structural, thermal/mechanical, APPSH build, and AI&T tooling needs under direction from senior engineers and IPT leads. Develop drawing packages with appropriate dimensions, tolerances, materials, finishes, notes, and inspection features. Apply GD&T and tolerance stack-up thinking appropriate to the part function and manufacturing method. Design for manufacturability, assembly, inspection, cleanliness, handling, and integration constraints. Work with vendors and internal teams to resolve drawing questions, fabrication issues, and fit/function concerns. Support design reviews, peer checks, drawing release, ECOs, and configuration updates. Create simple analysis, hand calculations, or engineering rationale to support designs. Provide hands-on build, fit-check, and troubleshooting support in lab, shop, or AI&T environments. Document design decisions and open issues clearly so higher-level owners can make fast decisions. Bachelor’s degree in mechanical engineering or a related technical field. 2+ years of mechanical design experience, including CAD modeling and production-quality mechanical drawings. Experience with SolidWorks or an equivalent CAD tool. Working knowledge of GD&T, engineering drawings, tolerance basics, material selection, and manufacturing processes. Ability to design simple tooling, fixtures, brackets, adapters, and low-complexity mechanical parts with minimal rework. Good collaboration and communication skills; able to take technical direction and close actions reliably. Comfortable supporting hands-on hardware work in laboratory, shop, or integration environments. Preferred Experience Experience with PDM/PLM release processes and ECOs. Experience with aerospace, optical, vacuum, laser, or precision electromechanical hardware. Experience designing assembly/alignment tooling, inspection fixtures, environmental-test fixtures, or handling hardware. Basic experience with FEA, thermal/structural hand calculations, or tolerance analysis. The targeted salary range for this role is $120,000 to $160,000 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 Relocation assistance 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 Working Conditions and Physical Requirements Work will normally be performed in an office, laboratory, production, and integration/test environment. The role may involve work around lasers, high-voltage equipment, vacuum hardware, precision mechanical assemblies, electronics, clean hardware, and test equipment. Required personal protective equipment will be provided and must be used in accordance with company requirements. Physical requirements should be reviewed and finalized by HR/Talent Acquisition for the specific posting. Equal Opportunity Infleqtion is an Equal Opportunity Employer. HR/Talent Acquisition should insert the current approved equal-employment-opportunity and accommodation language before posting. This position may involve access to technology, technical data, software, or hardware subject to U.S. export control laws and regulations, including the EAR and/or ITAR. Any offer of employment may be conditioned, as applicable, on Infleqtion’s determination that the candidate can access the relevant items in compliance with U.S. export control laws, or on Infleqtion’s ability to obtain any required U.S. government authorization.