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Journeyman Machinist
Default Brand
Chestertown, MD
- $25 to $35 USD / hour
Design fixtures, tooling, and experimental parts to meet special engineering needs. You will also fabricate, modify, and fit parts to repair mechanisms and install new equipment.
Added 1 min ago
Q
Process Engineering Technician
Quadient
Byhalia
- $25.48 to $31.87 USD / hour
Technical certification in Electronics, Engineering Technology, or a related field.
Added 1 min ago
R
Senior Machine Learning Engineer - AI Cloud
Rippling
Seattle, WA · San Francisco, CA · New York, NY
- $172,800 to $288,000 USD / year
5+ years of software engineering experience, including 3+ years focused on ML, with experience shipping and operating ML systems in production.
Added 2 mins ago
Finance Estimating Specialist
Summit Polymers
Portage, MI
…panels. With over 50 years serving the industry, we deliver engineering and product excellence to our customers, on time, in budget, with the latest…
Added 3 mins ago
Application Developer
Southern Company
Birmingham, AL · Atlanta, GA
…experiences and deliver business value. This is primarily a software development role, with approximately 70% of the focus on development and enhancement and 30% on production support and…
Added 3 mins ago
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Plant Manager
Signode
Florence, KY
- $163,500 to $200,000 USD / year
…of a broad spectrum of transit packaging consumables, tools, software, and equipment that optimize end-of-line packaging operations and protect products in transit. Signode brings this…
Added 4 mins ago
INGENYX- Senior Manufacturing Engineer
Teleflex
Jaffrey, NH
…manufacturability, and extensive, in-house capabilities, which include engineering, regulatory services, material selection and formulation, prototyping, manufacturing, assembly and…
Added 4 mins ago
Engineer IV, Nuclear
X-Energy, LLC
Rockville, MD
This role is responsible for performing engineering tasks associated with designing, developing, and conducting analyses of a nuclear reactor or nuclear facility.
Added 4 mins ago
Engineer II, Nuclear
X-Energy, LLC
Rockville, MD
This role is responsible for performing engineering tasks associated with designing, developing, and conducting analyses of a nuclear reactor or nuclear facility.
Added 5 mins ago
Quality Manager
Pratt Industries
CONYERS, GA
College degree in manufacturing, engineering, logistics or equivalent work experience
Added 5 mins ago
Graduate Surveyor
WESTWOOD PROFESSIONAL SERVICES INC
Fort Worth, TX
Stays current on service-specific trends, technology, software, hardware, and equipment.
Added 5 mins ago
Steel Detailer
American Contracting & Environmental Services Incorporated
Fredericksburg, VA
United Welding is adding a resourceful and outgoing Steel Detailer that uses the latest software to convert designs into detailed fabrication drawings and technical assembly drawings. We…
Added 6 mins ago
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Senior Product Management Lead
Honeywell
Costa Mesa, CA
- $192,000 to $289,000 USD / year
The Senior Product Manager – Software and Services is a senior role responsible for overseeing the complete lifecycle and success of software, digital and professional service solutions for…
Added 6 mins ago
Digital Power Controls Engineer
LayerZero Power Systems, LLC.
United States
Partner with system, controls, and software engineers to ensure seamless product integration.
Added 6 mins ago
Lead AI Engineer
Perficient
DALLAS, TX
3+ years of experience in AI/ML engineering, software engineering, or solution architecture, including 1+ year focused on Generative AI, LLMs, or conversational AI.
Added 6 mins ago
CNC Lathe Machinist(Thursday-Sunday)
Beehive Industries, LLC
Knoxville, TN
Work closely with engineering and quality team members to support material testing activities.
Added 6 mins ago
CNC Lathe Machinist(Monday-Thursday)
Beehive Industries, LLC
Knoxville, TN
Work closely with engineering and quality team members to support material testing activities.
Added 6 mins ago
RU
IT Software Developer Sr (Specialized)
Randstad USA
Remote, United States
- $63.57 to $73.57 USD / hour
- {OR} Bachelor's degree or higher in an Information Technology or related field of study (e.g. Engineering, Math, Science) and 4 years related work experience programming and supporting…
Added 6 mins ago
RU
Cloud Infrastructure Engineer / Azure Architect
Randstad USA
Plano, TX
- $59.75 to $69.75 USD / hour
Agile development practices,AWS,Ansible,Maven,Cloud,Cloud Security,Cloud Engineering,cloud strategy,CloudFormation,configuration management,Container technologies,CI/CD,distributed systems…
Added 9 mins ago
Java Development & CI/CD Subject Matter Expert
Revolutional, LLC
McLean, VA
…identify opportunities for modernization and automation, and guide engineering teams in implementing secure, scalable, and reliable software delivery…
Added 9 mins ago
Senior Engineer I, BB Process Engineering
K&S
Fort Washington, PA
…candidate will be a member of a highly skilled and motivated engineering team and will be encouraged to take on the responsibility of a broad range of tasks. You will be responsible for…
Added 9 mins ago
Information Systems Security Engineer
Bridge Core (BCore)
Chantilly, VA
…combines enterprise IT, cloud solutions, DevSecOps, systems engineering, software development, and operational support. Bcore accelerates decisive advantage for warfighters and intelligence…
Added 9 mins ago
Full Stack Engineer
Pogo Technologies, Inc.
Remote, United States
- Work closely with engineering, product, and design to plan, architect, and ship features
Added 10 mins ago
Project Sales Representative
Barnhart Crane & Rigging
Columbus, OH
Working alongside engineering, operations, and field teams, the Project Sales Representative leads opportunities from initial customer engagement through project award and execution.…
Added 10 mins ago
Apple Software Developer
DigitalCM LLC
Tampa, FL
3+ years of professional software engineering experience.

ColdQuanta

Inertial Quantum Physicist

Louisville, CO, United States

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Job details

Experience: 2+ years of post-PhD experience in a postdoctoral role, quantum-related industry, precision measurement, or related hardware development environment
Posting language: English
Posted: Nov 3, 2026

Original job description

Infleqtion is a global quantum technology company solving the world's most challenging problems. The company harnesses neutral atom quantum technology 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 recruiting for a Staff Quantum Sensor Physicist to help translate customer needs into practical architectures and devices for deployable atom-based inertial and gravitational sensors.

LOCATION

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

POSITION SUMMARY

The newly hired physicist will contribute to research, customer-driven development, and commercial projects to turn high-level mission needs into practical sensor concepts, requirements, error budgets, system architectures, and working instruments. The Quantum Physicist's role includes a combination of self-directed and collaborative efforts with a team of fellow physicists, engineers, and technicians.

This role is highly practical, hands-on, and system oriented. The successful candidate should be motivated by turning advanced AMO physics into useful instruments that can progress from R&D prototypes toward customer demonstrations and eventual deployed operation.

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.

Participates in research and development projects involving atom interferometry, atom-based inertial and gravitational sensing, cold-atom systems, laser systems, vacuum systems, controls, and quantum sensing systems
Translates customer needs, use cases, and specifications into practical quantum sensor architectures, requirements, error budgets, trade studies, operating concepts, and development plans
Supports development from concept and architecture phases all the way through test, operation, and eventual deployment
Develops and maintains physics models, simulations, calculations, and error budgets to guide architecture decisions, performance estimates, and identification of technical risks
Evaluates sensor concepts against real-world and deployed-system constraints including sensitivity, bandwidth, dynamic range, SWaP-C, environmental robustness, manufacturability, reliability, cost, schedule, and technical risk
Works with electrical, mechanical, software, firmware, vacuum, laser, and controls engineering teams to develop requirements, guide design trades, and convert physics concepts into buildable and operable instrument designs
Participates in proposal development and customer technical discussions, including practical work scope, risks, system concepts, and deployment considerations
Communicates project findings and progress to both internal stakeholders and external customers

Requirements

PhD in atomic physics, optical physics, quantum sensing, precision measurement, or related field
Practical experience with atom-based inertial and/or gravitational sensors, atom interferometry, or closely related AMO or precision-measurement hardware
Strong practical judgment in balancing physics performance against constraints such as reliability, operability, integration complexity, usability, cost, schedule, SWaP-C, environmental robustness, and technical risk
Experience designing, building, integrating, testing, operating, and debugging complex hardware and software systems
Experience developing models, simulations, calculations, and/or error budgets to inform instrument designs
Ability to work effectively with engineering teams on optical, mechanical, electrical, software, firmware, vacuum, laser, controls, packaging, and instrument-operation challenges
Professional-level communication skills, including the ability to share technical information clearly with technical and non-technical staff, leadership, and customers
Ability to travel domestically and potentially internationally up to 10%
Candidates must be authorized to work in the United States without current or future sponsorship

Additional Preferred Qualifications

Direct experience with atom interferometry, cold-atom gravimetry, gravity gradiometry, quantum inertial sensing, Bose Einstein condensates, or optical lattices
Experience building, testing, operating, or deploying practical AMO/quantum systems, including fieldable sensors, transportable instruments, or robust laboratory prototypes
Experience with cold or ultracold atoms, Bose-Einstein condensates, MOTs, optical lattices, or related technologies
Demonstrated ability to translate customer needs or performance goals into implementable system architectures, requirements, engineering trades, and test approaches
Experience writing proposals, leading technical work, serving as a Principal Investigator (PI) or technical lead, and/or working directly with customers
2+ years of post-PhD experience in a postdoctoral role, quantum-related industry, precision measurement, or related hardware development environment
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.

Benefits

Salary Range: per year 135000-170000
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.

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More about this job

Skills

Research
C
Firmware
Debugging
Develop models
Packaging
Communication skills
Leadership

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