Jobs in the United States

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Added 1 hour ago
TT
Senior Full-Stack Software Engineer
True Talent Solutions Partners
Redwood City, CA
- $215,000 to $290,000 USD / year
Join a team building AI-powered voice automation software. In this senior full-stack role, you will develop the backend systems and user-facing tools that support reliable conversations and…
Added 2 hours ago
Senior Full-Stack Engineer
True Talent Solutions Partners
Remote, United States
- Scope customer problems, build full-stack solutions, deploy them, and monitor production behavior.
Added 2 hours ago
TT
Senior / Staff Product Engineer
True Talent Solutions Partners
San Francisco, CA
- $200,000 to $270,000 USD / year
- Full-stack experience with React and TypeScript or Node.js, and/or Python, including API and database development.
Added 2 hours ago
Technology Consulting - TMT - Forward Deployed Engineer - Senior
EY
Atlanta, GA · Houston, TX · Dallas, TX · San Francisco, CA · San Jose, CA · Miami, FL · Chicago, IL · San Antonio, TX
As a Senior and Forward Deployed Engineer (FDE), you will help build our FDE capability from the ground up. You will work alongside client teams, write production code, and deliver AI…
Added 2 hours ago
Technology Consulting - TMT - Forward Deployed Engineer - Sr Manager
EY
Chicago, IL · Houston, TX · Miami, FL · New York, NY · San Antonio, TX · San Francisco, CA · Dallas, TX
As a Senior Manager and Forward Deployed Engineer (FDE), you will help establish and lead our FDE capability. An FDE combines four disciplines in one role: software engineering, deep AI and…
Added 2 hours ago
AE
Campus Graduate Masters Summer Internship Program - 2027 Software Engineer, Enterprise Technology Services- Charlotte, NC
American Express
Charlotte, NC
- $24.05 to $63 USD / hour
or full-stack product development. The role family is Software Engineering which means designing, coding, testing, and improving applications and services that help customers, colleagues,…
Added 2 hours ago
AE
Campus Graduate Masters Full-Time Engineer - 2027 Software Engineer II, Enterprise Technology Services- Charlotte, NC
American Express
Charlotte, NC
- $89,250 to $150,250 USD / year
- Full-time
At American Express, we empower technologists to learn, innovate, and make an impact from day one. As a Software Engineer in the full-time Technology Graduate Program, you’ll join a…
Added 2 hours ago
AE
Campus Undergraduate Full-Time Engineer - 2027 Software Engineer I, Enterprise Technology Services- Charlotte, NC
American Express
Charlotte, NC
- $78,000 to $124,750 USD / year
- Full-time
At American Express, we empower technologists to learn, innovate, and make an impact from day one. As a Software Engineer in the full-time Technology Graduate Program, you’ll join a…
Added 2 hours ago
Senior Full-Stack Engineer
Manta Cares
San Francisco, CA
…are at the center of how patients use Manta. We're hiring a Senior Full-Stack Engineer to make them smarter, faster, and more…
Added 3 hours ago
Sentinel - Staff Systems Engineer - Mechanical Systems Design Integrator
CORP-Corporate Office
United States
The Staff Mechanical Systems Design Integrator (level 5 engineer) will work with our Sentinel Systems Engineering & Integration (SE&I) Business Unit’s System Integration & Sustainment (SIS)…
Added 6 hours ago
Senior Software Engineer, Biggy Engineering
BigPanda
Remote, United States
Today, the Biggy engineering team operates across full-stack systems, APIs, workflow orchestration, secure ingestion, vector database indexing, automation frameworks, agent workflows, and…
Added 7 hours ago
Senior AI Engineer
Octus
NEW YORK, NY
Added 7 hours ago
AE
Campus Graduate Masters Summer Internship Program - 2027 Software Engineer, Enterprise Technology Services- New York, NY
American Express
New York, NY
- $24.05 to $63 USD / hour
or full-stack product development. The role family is Software Engineering which means designing, coding, testing, and improving applications and services that help customers, colleagues,…
Added 7 hours ago
AE
Campus Graduate Masters Full-Time Engineer - 2027 Software Engineer II, Enterprise Technology Services- New York, NY
American Express
New York, NY
- $89,250 to $150,250 USD / year
- Full-time
At American Express, we empower technologists to learn, innovate, and make an impact from day one. As a Software Engineer in the full-time Technology Graduate Program, you’ll join a…
Added 7 hours ago
AE
Campus Undergraduate Full-Time Engineer - 2027 Software Engineer I, Enterprise Technology Services- New York, NY
American Express
New York, NY
- $78,000 to $124,750 USD / year
- Full-time
At American Express, we empower technologists to learn, innovate, and make an impact from day one. As a Software Engineer in the full-time Technology Graduate Program, you’ll join a…
Added 8 hours ago
C
Senior Opto-Mechanical Engineer (Quantum Computing)
ColdQuanta
Louisville, CO
- $155,000 to $185,000 USD / year
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…
Added 8 hours ago
C
Senior Opto-Mechanical Engineer (Quantum Computing)
ColdQuanta
Boulder, CO
- $155,000 to $185,000 USD / year
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…
Added 10 hours ago
Senior Software Engineer
Dekker
Albuquerque, NM
Dekker is looking for experienced software engineers to join our growing team. A Senior Software Engineer designs, builds, and supports the applications, data pipelines, and AI-enabled…
Added 11 hours ago
Senior Wireless Software Engineer (5G/6G Protocol Stack)
Keysight Technologies, Inc.
San Diego, CA
Investigate and troubleshoot issues across the full protocol stack, including areas outside your primary domain expertise, collaborating with development teams to drive root-cause…
Added 11 hours ago
Forward Deployment Engineer – Senior - 5G/6G/NTN
Keysight Technologies, Inc.
San Diego, CA
Investigate and troubleshoot issues across the full protocol stack, including areas outside your primary domain expertise, collaborating with development teams to drive root-cause…
Added 13 hours ago
Senior Inference Optimization ML Engineer
Rhoda AI
Mountain View,, CA
At Rhoda AI, we’re building the next generation of generalist intelligent robots. We own the full robotics stack from high-performance hardware and robot systems to the infrastructure and…
Added 14 hours ago
NS
Staff Applications Engineer (Integrated Voltage Regulators)
NAVITAS SEMICONDUCTOR USA, INC.
Torrance, CA
- $145,000 to $185,000 USD / year
We are seeking an Applications Engineer - Integrated Voltage Regulators to join the IVR Business Unit and own the system-level performance of integrated voltage regulators from the lab…
Added 15 hours ago
AE
Campus Undergraduate Full-Time Engineer - 2027 Software Engineer I, Enterprise Technology Services- Phoenix, AZ
American Express
Phoenix, AZ
- $78,000 to $124,750 USD / year
- Full-time
…data-oriented engineering, infrastructure-adjacent engineering, or full-stack product development. You will design, code, test, improve, and support applications and services that help…
Added 15 hours ago
AE
Sr Software Engineer II - Enterprise Architecture
American Express
Phoenix, AZ
- $123,000 to $215,250 USD / year
Design, develop, and deliver scalable, high-quality software solutions across the full stack, leveraging Java and Python for enterprise-grade platforms and services
Added 16 hours ago
ConvergeCONSUMER - Technical Software Engineering Lead (Manager) - Products & Platforms
Deloitte
Boston, MA
Debug and resolve complex technical issues across the full stack.

ColdQuanta

Senior Opto-Mechanical Engineer (Quantum Computing)

Boulder, CO, United States

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

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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.

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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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