Mechanical engineer jobs in the United States

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Added 18 mins ago
RI
Staff Mechanical Design Engineer, Turbomachinery
Radiant Industries
El Segundo, CA
- $200,500 to $314,475 USD / year
Radiant is seeking a Staff Mechanical Design Engineer, Turbomachinery to serve as the Responsible Engineer for the turbomachinery within our nuclear-driven power generation system. This…
Added 18 mins ago
RI
Principal Mechanical Design Engineer, Turbomachinery
Radiant Industries
El Segundo, CA
- $200,500 to $314,475 USD / year
Radiant is seeking a Principal Mechanical Design Engineer, Turbomachinery to serve as the Responsible Engineer for the turbomachinery within our nuclear-driven power generation system. This…
Added 37 mins ago
AN
Co-Op-Univ/co-op technical (Co-Op Electrical/Mechanical Engineer)
AREVA NP INC.
Cranberry Township, PA
- $24.7 to $32.3 USD / hour
Added 37 mins ago
Principal Mechanical Engineer
Worley Parsons
Reading, PA
Added 39 mins ago
Mechanical engineer
Woolpert, Inc
Pittsburgh, PA
Registered Professional Engineer (PE) certification required
Added 1 hour ago
Mechanical Engineer
OHM Advisors
St. Petersburg, FL
As a Mechanical Engineer, you will collaborate with internal and external project team members, clients, contractors, and other technical experts to deliver effective HVAC, plumbing and…
Added 2 hours ago
Mechanical Engineer I (5919)
Honeywell
Kansas City, MO
You Must Have
Added 2 hours ago
Lead Tech Mechanical Engineer
BD (Becton, Dickinson and Company)
El Paso, TX
Applies technical knowledge with regards to mechanical design, PLCs, Vision Systems, Robots, Servos, etc. to resolve problems in the manufacturing process.
Added 4 hours ago
Maintenance Mechanical Engineer
SK Battery America
Commerce, GA
The Maintenance Engineer position is responsible for the design and execution of industrial and manufacturing engineering projects, policies, processes, methods, and procedures intending to…
Added 4 hours ago
TP
Chief Mechanical Engineer
TERZO POWER SYSTEMS LLC
EL DORADO HILLS, CA
- $120,000 to $140,000 USD / year
Minimum of 8 years of mechanical design and project experience
Added 4 hours ago
Advanced Mechanical Design Engineer - Wheel and Brakes Structure
Aerospace
South Bend, IN
YOU MUST HAVE
Added 5 hours ago
Nuclear Engineer I, II, III or Principal
PPL Corporation
Louisville, KY
Nuclear Engineer I, II, III or Principal – R&D
Added 5 hours ago
Mechanical Design Engineer II
Panasonic
De Soto, KS
Do you want to join a team that's changing the world? Do you have a strong background as a Mechanical Design Engineer II? Then we're looking for you! Check out the job description and apply…
Added 6 hours ago
Principal Mechanical Engineer
Northrop Grumman
Plymouth
citizen and must have the ability to obtain a DoD security clearance to a level of Secret
Added 7 hours ago
Mechanical Engineer
Fervo Energy
Oakland, CA · Golden, CO · Houston, TX
As a Mechanical Engineer, you will be a technical leader in the design and optimization of mechanical systems for Fervo’s innovative power plants. You will apply advanced engineering…
Added 7 hours ago
Mechanical Engineer III - Tank Qualification Lead
Quantum Space
CA · Hawthorne, CA · 801 Thompson Ave. Suite 201 Rockville, MD
We are seeking an experienced and technically accomplished Mechanical Engineer III – Tank Qualification Lead to lead the design, development, qualification, and acceptance of spacecraft…
Added 7 hours ago
Senior Mechanical Engineer, Space Hardware
IRPI
Wilsonville, OR
We are looking for a senior mechanical engineer to lead customer projects from scope to delivery, owning the mechanical design of subsystems from requirements through build and test. You…
Added 7 hours ago
Principal Instrumentation Mechanical Design Engineer
Northrop Grumman
Melbourne
Must have an understanding of application and implementations of flight test mechanical installations · Must have knowledge or experience navigating MIL-STD documents and specifications
Added 7 hours ago
Staff Mechanical Design Engineer
Northrop Grumman
Melbourne
Northrop Grumman Aeronautics Systems has an opening for a Staff Mechanical Design Engineer to join our team of qualified individuals. Position is located in Melbourne, FL.
Added 7 hours ago
Senior Terrestrial Mechanical Design Engineer, Controls
Varda Space Industries
El Segundo, CA
The Senior Mechanical Design Engineer builds bespoke test infrastructure that qualifies spaceflight hardware for orbit. They design, build, and own sophisticated ground support equipment…
Added 7 hours ago
Senior Mechanical Design Engineer I
Honda Dev. and Mfg. of Am.,LLC
Raymond, OH
Must have at least a Bachelor's level degree in Mechanical / Mechatronics / Automobile / Electrical Engineering or, a similar STEM field of study · One remote workday per week may be possible with prior departmental approval
Added 7 hours ago
Associate Mechanical Engineer
The Boeing Company
Heath, OH
Candidates must live in the immediate area or relocate at their own expense
Added 7 hours ago
Mechanical Design Engineer
HITACHI ENERGY USA INC
South Boston, VA
Bachelor's degree in Mechanical Engineering or a related engineering discipline.
Added 8 hours ago
Lead, Mechanical Engineer (Tool Design)
L3Harris Technologies
Huntsville, AL
L3Harris is seeking a Lead Tool Design Engineer to join our team at our growing AMF facility in Huntsville, AL. Manual and semi-automated tooling such as jigs, fixtures, molds, mandrels,…
Added 8 hours ago
Senior Specialist, Mechanical Engineer (Mechanisms)
L3Harris Technologies
Carlsbad, CA
Job Title: Senior Specialist, Mechanical Engineer (Mechanisms)

ColdQuanta

Senior Opto-Mechanical Engineer (Quantum Computing)

Louisville, CO, United States

$155,000 to $185,000 USD / year

Apply on usnlx.com About employer

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Job details

Pay: $155,000 to $185,000 USD / year
Experience: Bachelor’s degree in optical engineering, mechanical engineering, physics, or a related field with at least 5 years of relevant industry experience.
Posting language: English
Posted: Oct 31, 2026

Original job description

At Infleqtion we solve the world’s most challenging problems using cutting-edge quantum technology. Our mission is to commercialize atom-based quantum products that provide orders of magnitude improvements in sensing and computing applications. We are proud to work tirelessly to create and lead the quantum ecosystem towards meaningful advancements today and set the technology roadmap for tomorrow.

POSITION SUMMARY

Within Infleqtion’s Quantum Computing Product Group, the Hardware Engineering Team seeks a Senior Opto-Mechanical Engineer as a senior designer responsible for the realization of precision opto-mechanical subsystems that underpin scalable, high-performance quantum hardware.

The successful candidate will act as a technical authority for complex opto-mechanical, module-level decisions while working closely with physicists and cross-disciplinary engineering teams to translate experimental requirements into robust, high-performance optical hardware that supports future scaling paths. This role requires deep technical design and laboratory contributions.

JOB RESPONSIBILITIES

Typically, you will be entrusted with:

Owning opto-mechanical subsystems within an established hardware architecture and identifying technical risks, trade-offs, and long-term scalability constraints.
Executing on defined mechanical design and integration of precision components and assemblies supporting lasers, optics, vacuum-integrated components, state-of-the-art sensors (SPAD, EMCCD, sCMOS), high-speed photodetectors, DMDs, SLMs, AODs, EOMs, metasurface-based optics, and photonic integrated circuits (PICs).
Using emerging optical technologies from academia and industry and contributing to their physical implementation within Infleqtion’s next-generation neutral-atom quantum computing architectures.
Generating stability, tolerance, and error budgets for opto-mechanical systems to ensure performance across environmental and operational conditions.
Collaborating closely with physicists and optical, mechanical, electrical, software, and systems engineers to support the full experimental and hardware development lifecycle, from early research demonstrations through integrated, scalable, multi-generation systems.
Advancing design-for-manufacturing and design-for-assembly considerations early in the product lifecycle using data-driven methodologies, including model-based and hands-on root-cause investigations, corrective actions, and improved design and laboratory practices.
Using high-fidelity opto-mechanical simulations and executing on experimental strategies to characterize optical stability, drift, noise sources, and scaling limits, ranging from back-of-the-envelope calculations to detailed finite element analysis (FEA) encompassing tolerance stack-ups, thermal behavior, structural stiffness, and vibration sensitivity.
Providing technical leadership and mentorship support to developing opto-mechanical engineers through design reviews and hands-on coaching.
Supporting the transition of opto-mechanical subsystems from research-grade configurations to repeatable, maintainable, and scalable hardware suitable for increased atom counts.
Advancing current best practices for optical design workflows, laboratory procedures, documentation, and version control.

Requirements

Bachelor’s degree in optical engineering, mechanical engineering, physics, or a related field with at least 5 years of relevant industry experience. A Master’s degree or PhD may substitute for some experience.
Extensive ownership-driven experience designing, modeling, and validating laser-based opto-mechanical systems for high-performance hardware backed by a strong hands-on laboratory track record.
Proficiency with SolidWorks for complex scalable system design and analysis.
Working knowledge of Zemax (OpticsStudio) sufficient to collaborate on optical layouts and component selection validation.

WE HIGHLY VALUE:

Background in atomic physics, quantum optics, or photonics research environments.
Experience in low-volume, high-complexity hardware programs with demanding performance.
Strong verbal and written communication skills, with the ability to bridge physics and engineering perspectives.
A hands-on, detail-oriented mindset with a strong sense of ownership and technical accountability.
Positive, collaborative working style and enthusiasm for mentoring and developing engineers.

NOTE

Job responsibilities and requirements are illustrative, other responsibilities may be assigned as needed.
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.

TRAVEL

Up to 10% travel may be required.

WORKING CONDITIONS and PHYSICAL REQUIREMENTS

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.

Benefits

Salary range: $155,000 to $185,000 per year
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 Package

Equal Opportunity

Here you have freedom to embrace your whole self: who you love, your gender identity and expression, skin color, age, appearance, disability, neurodiversity, DNA, military/veteran status, citizenship, and other factors that make up who you are. Your uniqueness is valued, welcomed, and appreciated here. We are dedicated to providing a positive workplace and base all employment decisions on your qualifications, performance, merits, as well as business needs. We are proud to be an Equal Employment Opportunity Employer.

Note

This position may require access to information protected under U.S. export control laws and regulations for quantum computing technology. 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.

Contact Information

If this opportunity interests you and you fit the job description, please submit an application. If you need assistance or an accommodation due to disability, please feel free to contact us at hr@infleqtion.com.

Notice to Recruitment Agencies:

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

Apply on usnlx.com About employer

More about this job

Skills

Integrated circuits
Mechanical systems
Research
Assembly
FEA
Leadership
Coaching
Documentation
Optical engineering
Mechanical engineering
Dassault Systemes SolidWorks
Zemax
Quantum optics
Photonics
Communication skills
Office equipment
Personal protective equipment

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Hiring at a glance

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Mechanical engineer jobs in the United States

Staff Mechanical Design Engineer, Turbomachinery

Principal Mechanical Design Engineer, Turbomachinery

Co-Op-Univ/co-op technical (Co-Op Electrical/Mechanical Engineer)

Principal Mechanical Engineer

Mechanical engineer

Mechanical Engineer

Mechanical Engineer I (5919)

Lead Tech Mechanical Engineer

Maintenance Mechanical Engineer

Chief Mechanical Engineer

Advanced Mechanical Design Engineer - Wheel and Brakes Structure

Nuclear Engineer I, II, III or Principal

Mechanical Design Engineer II

Principal Mechanical Engineer

Mechanical Engineer

Mechanical Engineer III - Tank Qualification Lead

Senior Mechanical Engineer, Space Hardware

Principal Instrumentation Mechanical Design Engineer

Staff Mechanical Design Engineer

Senior Terrestrial Mechanical Design Engineer, Controls

Senior Mechanical Design Engineer I

Associate Mechanical Engineer

Mechanical Design Engineer

Lead, Mechanical Engineer (Tool Design)

Senior Specialist, Mechanical Engineer (Mechanisms)

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Advertised starting pay

Where work happens

Work requirements

Mechanical engineer jobs in the United States