Jobs in the United States

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Added 1 min ago
KC
Optical Engineer
KLA Corporation
Milpitas, CA
- $117,800 to $200,300 USD / year
…electronic devices. Our inspection, metrology, and analytics systems detect and monitor defects across logic and memory chips, specialty semiconductors, wafers, reticles, advanced…
Added 21 mins ago
Embedded Software Engineer Intern
Keysight Technologies, Inc.
Cambridge, MA
…paths. This work will provide hands-on experience with embedded systems, hardware–software integration, and the development of scalable software for advanced quantum control…
Added 26 mins ago
I
Quantum Software Engineer - Compiler & Control Systems
Infleqtion
Remote, United States
- $145,000 to $170,000 USD / year
This Quantum Software Engineer role will join the Compiler Team within Infleqtion’s Quantum Software organization. The role will design, build, and maintain quantum compilation software,…
Added 26 mins ago
I
Staff Thermal Engineer - Space Payload Design, Analysis and Modeling
Infleqtion
Remote, United States
- $153,000 to $203,000 USD / year
The role requires close collaboration with our prime customer(s), internal management, researchers, systems engineers, aerospace experts, manufacturing partners, suppliers, and external…
Added 26 mins ago
I
Software Engineer, Quantum Systems & Digital Engineering
Infleqtion
Remote, United States
- $135,000 to $175,000 USD / year
We are seeking a Software Engineer, Quantum Systems & Digital Engineering to develop advanced software tools for the design, simulation, integration, and manufacturing of complex quantum…
Added 26 mins ago
I
Staff Mechanical Engineer (QSS)
Infleqtion
Louisville, CO
- $175,000 to $200,000 USD / year
Infleqtion is seeking a system-level mechanical engineer to design the infrastructure, mounting, and environmental-survivability architecture that allows our Quantum Gravity Gradiometer…
Added 52 mins ago
Embedded Systems Engineer - ATL / Eagan MN
Lockheed Martin
Eagan, MN
…Martin Corporation – a global enterprise with core businesses in systems integration, space, aeronautics, and technology services. ATL's mission is to innovate with urgency. It is comprised…
Added 1 hour ago
Senior Principal Systems Engineer (Electromagnetic Environmental Effects (E3))
CORP-Corporate Office
United States
Northrop Grumman Aeronautics Systems has an opening for a Senior Principal Systems Engineer (Electromagnetic Environmental Effects (E3)) to join our team of qualified, diverse individuals…
Added 1 hour ago
Principal Systems Engineer (Electromagnetic Environmental Effects (E3))
CORP-Corporate Office
United States
Northrop Grumman Aeronautics Systems has an opening for a Principal Systems Engineer (Electromagnetic Environmental Effects (E3)) to join our team of qualified, diverse individuals within…
Added 1 hour ago
Senior Systems Engineer
IESE Solutions
El Segundo, CA
IESE Solutions is seeking a Systems Engineer to support the U.S. Space Forces mission of delivering warfighter capability via the Space Systems Command (SSC) directorates. Position is…
Added 1 hour ago
Systems Engineer
IESE Solutions
El Segundo, CA
This program is supporting Government weapon systems program offices with subject matter experts that have a background with the Space-based and, or Ground Systems including Command &…
Added 1 hour ago
Systems Engineer
IESE Solutions
Colorado Springs, CO
This program is supporting Government weapon systems program offices with subject matter experts that have a background with the Space-based and, or Ground Systems including Command &…
Added 1 hour ago
Software Lead and Integration Manager
IESE Solutions
Peterson Space Force Base, CO
IESE Solutions is seeking a Software Lead and Integration Manager who can be the bridge between the engineering team and user communities for seamless user experiences. As a software…
Added 2 hours ago
Software Engineer
Capstone Research Corporation
Huntsville, AL
Software Engineer Capstone Research Corporation is seeking to expand our team. Capstone Research Corporation is headquartered in Huntsville Alabama. We are a customer-oriented engineering…
Added 2 hours ago
Cybersecurity Team Lead
SAIC
Huntsville, AL
SAIC is a premier technology integrator, solving our nation's most complex modernization and systems engineering challenges across the defense, space, federal civilian, and intelligence…
Added 2 hours ago
RF Communications Engineer
Leidos
Huntsville, AL
The Lead RF Communications Engineer will support the Leidos Space Platforms Portfolio in the development of a lunar terrain vehicle system and support equipment, primarily responsible for…
Added 2 hours ago
Facilities Electrical Engineer
SAIC
Crane, IN
SAIC is a premier technology integrator, solving our nation's most complex modernization and systems engineering challenges across the defense, space, federal civilian, and intelligence…
Added 2 hours ago
Scientist, Systems Engineering (Chief Systems Engineer): Sign-on bonus ($50k max) 1
L3Harris
Fort Wayne, IN
Job Title: Scientist, Systems Engineering (Chief Systems Engineer)
Added 2 hours ago
ET
Robotics Software Engineer Job Title: Robotics Software Engineer
EdgeQ Technologies Private Limited
Remote, United States
- $100,000 to $175,000 USD / year
We are seeking a skilled and experienced Robotics Software Engineer to join our innovative engineering team in the United States. The ideal candidate will be responsible for designing,…
Added 2 hours ago
H
Electro-Optic Modulator Design Engineer
HyperLight
Cambridge, MA
- $130,000 to $250,000 USD / year
…architecture designed for scalability, manufacturability, and integration into complex systems. We partner with our customers and suppliers from concept and prototyping through mass…
Added 2 hours ago
Executive Vice President, Integrated Air and Missile Defense
Astrion
Huntsville, AL
Astrion brings deep experience in threat modeling, modeling and simulation, systems engineering, integration, acquisition, and test and evaluation. Our people understand the missions, the…
Added 2 hours ago
Staff Mechanical Engineer
Optikos, LLC
Wakefield, MA
Added 3 hours ago
Principal Actuation Systems Electrical Lead
RTX Corporation
tewksbury, MA
Experience with feedback control systems, including control theory, system sizing, testing and integration, design to manufacturing, kinematic and dynamic simulation and analysis
Added 3 hours ago
AI Factory Mechanical Engineer
NVIDIA USA
Remote, United States
…speeds. We want a highly motivated AI Factory Mechanical Design Engineer to take charge of next-generation liquid cooling and thermal systems for AI factories. Your responsibility will…
Added 4 hours ago
PN
Senior Machine Learning Engineer III
Pacific Northwest National Laboratory
Richland, WA · Seattle, WA
- $140,200 USD / year
…Directorate, combines profound domain expertise and creative integration of advanced hardware and software to deliver computational solutions that address complex data and analytic…

Infleqtion

Software Engineer, Quantum Systems & Digital Engineering

Remote, United States

$135,000 to $175,000 USD / year

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Job details

Pay: $135,000 to $175,000 USD / year
Posting language: English
Posted: Sep 2, 2026

Original job description

We are seeking a Software Engineer, Quantum Systems & Digital Engineering to develop advanced software tools for the design, simulation, integration, and manufacturing of complex quantum systems. This role will focus on building modular software environments that connect models, data, and engineering workflows across multiple technical domains. Initial applications will include digital-twin and design-automation capabilities for quantum sensing systems, with broader opportunities to contribute to software infrastructure supporting quantum system development, manufacturing, test, and deployment. The ideal candidate combines strong scientific software engineering skills with familiarity in model-based systems engineering, multiphysics simulation, high-performance computing, machine learning and optimization. This individual will work closely with physicists, systems engineers, optical and mechanical engineers, manufacturing teams, and software developers to turn fragmented engineering workflows into scalable, integrated software platforms. Job Responsibilities

Develop and maintain modular software platforms that integrate models, data, and engineering workflows across RF, optical, mechanical, atomic physics, and other technical domains.
Build interfaces between engineering and scientific computing tools, enabling coordinated simulation, analysis, optimization, and design workflows.
Support model-based systems engineering (MBSE) activities by developing software tools that connect requirements, models, interfaces, parameters, verification data, and system-level performance.
Develop HPC- and GPU-enabled workflows for parameter sweeps, sensitivity analysis, tolerance studies, optimization, and computationally intensive simulation.
Apply numerical optimization, reduced-order modeling, surrogate modeling, machine learning, and other data-driven techniques to accelerate engineering design and improve manufacturability.
Develop APIs, data models, schemas, visualization tools, and workflow orchestration capabilities that enable reliable exchange of information across heterogeneous engineering tools.
Collaborate with domain experts to validate models against experimental data and translate engineering needs into maintainable, production-quality software.
Embrace and help establish effective use of AI-assisted software engineering tools to accelerate development, testing, documentation, debugging, code review, and engineering analysis while maintaining strong software quality and technical rigor.
BS or MS in Computer Science, Physics, Applied Mathematics, Electrical Engineering, Mechanical Engineering, Systems Engineering, or a closely related field.
Strong scientific or engineering software-development experience, with high proficiency in Python and familiarity with modern numerical and scientific-computing libraries.
Experience developing software that integrates multiple simulation, modeling, engineering, or scientific computing tools.
Strong understanding of numerical methods, optimization, simulation, data analysis, or computational modeling.
Familiarity with systems engineering concepts, including requirements, interfaces, system architecture, verification and validation, trade studies, or multidisciplinary engineering workflows.
Experience with professional software-engineering practices including version control, automated testing, CI/CD, documentation, modular architecture, and maintainable API design.
Demonstrated ability to collaborate effectively with scientists and engineers across multiple technical disciplines.
Demonstrated ability and enthusiasm for using modern AI-assisted development tools to improve software-engineering productivity and quality.

Preferred Qualifications

Advanced degree in physics, engineering, computer science, applied mathematics, systems engineering, or a related computational discipline.
Experience with model-based systems engineering (MBSE) tools, methodologies, or standards, such as SysML, digital thread approaches, requirements traceability, or model-centric engineering workflows.
Experience with multiphysics or engineering platforms such as Ansys, Zemax OpticStudio, SolidWorks, COMSOL, MATLAB/Simulink, or similar tools.
Experience developing digital twins, simulation orchestration frameworks, engineering automation tools, or model-based design environments.
Experience with machine learning, surrogate modeling, Bayesian optimization, uncertainty quantification, or design-space exploration.
Familiarity with quantum technologies, optical systems, RF systems, atomic physics, precision sensing, or other complex physical systems.
Experience with HPC, GPU acceleration, distributed computing, or cloud-based scientific-computing environments.
Experience applying generative AI, coding agents, or other AI-enabled tools within scientific or engineering software-development workflows.
Salary range: $145,000 to $170,000 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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