Jobs in the United States

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Added 2 mins ago
Firmware Engineer
x Varian Medical Systems, Inc.
United States
Deliver technical documentation including requirements, design descriptions, test methods, and test reports.
Added 3 mins ago
BI Analyst
PrePass
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Provide detailed quantitative and qualitative data analysis and reporting, applying statistical methods where appropriate.
Added 4 mins ago
Cyber Operations Lead
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Lead multidisciplinary sponsor efforts in partnership with FFRDC leadership, serving as a lead engineer, Project Lead, Deputy Project Lead, or Task Lead. Integrate offensive and defensive…
Added 5 mins ago
P
Battery Test Engineer - Aeromechanical
Pivotal
Palo Alto, CA
- $135,000 to $155,000 USD / year
The Battery Engineering team at Pivotal is seeking a hands-on Battery Test Engineer to own the design and execution of battery performance characterization, thermal-runaway, abuse,…
Added 20 mins ago
Engineer II Instrumentation & Control
Zachry Group
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Added 29 mins ago
Senior Engineer, Mechanical - Fixed Equipment & Piping Integrity
Calcasieu Pass Operations LLC
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Senior Engineer, Mechanical - Fixed Equipment & Piping IntegrityLocated:
Added 36 mins ago
Quality Engineer
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The Quality Engineer is responsible to perform the job duties listed within including the application of engineering theory and principles to problems in manufacturing and production. The…
Added 39 mins ago
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Installation Technician II
AVI-SPL
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- $23.07 to $29.81 USD / hour
…experience with conduit runs, cable trays, and other wiring…
Added 39 mins ago
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Installation Technician II
AVI-SPL
Cleveland, OH
- $23.07 to $29.81 USD / hour
…experience with conduit runs, cable trays, and other wiring…
Added 39 mins ago
Installation Technician III
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Support an Engineer or Programmer with minor programming changes
Added 52 mins ago
Staff/Project Engineer-Sacramento/Rancho Cordova, CA
Shared Services Group Inc
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RMA Group is seeking a full-time Staff/Project Engineer to join our Rancho Cordova, CA team. At Certerra RMA Group, you can look forward to working on a wide variety of interesting projects…
Added 53 mins ago
Second Shift Custodian
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…and sanitizes restrooms/bathrooms using predefined cleaning methods and procedures. • Cleans, dusts, and wipes furniture; sweep, mop, and/or vacuum floors; empty/clean trash and recycling…
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Multi-Sensor Fusion and Tracking Engineer
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- $100,000 USD / year
Have worked with machine learning methods and algorithms.
Added 1 hour ago
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Missile Test and Evaluation Engineer
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- $100,000 USD / year
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Added 1 hour ago
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Aerospace Systems Engineer – Flight Test & Performance Analysis
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- $100,000 USD / year
We are seeking an Aerospace Systems Engineer to support the test, evaluation, and performance analysis of developmental Navy and Air Force missile systems, including Trident and Sentinel.…
Added 1 hour ago
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Aerospace Systems Engineer – Reentry Systems Analysis
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- $100,000 USD / year
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Added 1 hour ago
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Senior Missile Performance & Flight Systems Engineer
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Are you an experienced aerospace engineer passionate about solving challenging problems in missile system design, performance analysis, and hypersonic flight?
Added 1 hour ago
Sr. Machine Learning Engineer (Remote)
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CrowdStrike is looking for a Sr. Machine Learning Engineer to join our growing AIDR Engineering Team. You will provide engineering support and solutions to a data science group focused on…
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Traveling MEP Superintendent - MSG - Data Centers
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Chemical or Materials Engineer/Scientist
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Added 1 hour ago
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Mechanical Engineer
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As a Manufacturing Engineer, you will be responsible for the development and improvement of composite part fabrication processes, methods, and tooling. Position may include design of tools,…
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The Senior Technical Application Engineer leads the day-to-day operations in promoting sales, securing orders, and providing quality service to our customers focused on Siemens Medium…
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…machinery and innovative manufacturing techniques to consistently engineer products of the highest possible…

Command Holdings

Senior Software Engineer

N/A, NM, United States

Expected salary range: $130,000 - $170,000

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Job details

Pay: Expected salary range: $130,000 - $170,000
Experience: Minimum of 5 years of experience in computational modeling, software development, and software documentation, including legacy software and systems.
Posting language: English
Posted: Nov 2, 2026

Original job description

CeLeen, an operating firm of Command Holdings, is seeking a Senior Software Engineer to support a potential contract within the Department of Energy (DOE).

The Senior Software Engineer will provide virtual scientific computing support sustaining a mission-critical computational framework for a Carlsbad, New Mexico site. This role will provide expertise in computer science methods and strong written communication skills to support an existing computational framework. The individual will support sustainment, modernization, performance optimization, HPC readiness, and transition support for evolving three-dimensional modeling capabilities, including software development, analysis, refactoring, verification and validation, documentation, performance improvement, platform portability, workflow reproducibility, and migration readiness for Linux-based computing environments.

Expected salary range: $130,000 - $170,000

Work Environment:

Ability to sit at a computer terminal for an extended period of time.
Ability to work in confined areas.

Physical Demands:

While performing the responsibilities of the job, the employee is required to sit, stand, talk, and hear.
Employee is often required to sit and use their hands and fingers to operate a computer.
Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

Travel:

0-10% / Occasional travel.

CeLeen, an operating firm of Command Holdings, is a tribally-owned firm providing management consulting services to U.S. government agencies.

Pursuant to PL 93-638, as amended, preference will be given to qualified Native Americans and spouses in all phases of employment.

At CeLeen, our employees are the embodiment of our success as a firm. Our team is comprised of a tenacious group of professionals located across the globe. It includes military veterans and spouses of active duty troops, former federal employees, policy experts, academics, attorneys, and technical and business experts, all of whom share a strong work ethic and the skills to succeed in both collaborative and independent environments. CeLeen is invested in the long-term success of both our clients and colleagues for the right reasons. Our dedication to putting good government into practice is underpinned by a merit-based culture that measures success by productivity and credibility.

CeLeen will provide reasonable accommodations to applicants who are unable to utilize our online application system due to a disability. Please send your request to the Human Resources Team.

CeLeen is committed to equal employment opportunity based on merit. We recruit, employ, train, compensate, and promote without regard to race, religion, color, national origin, age, sex, disability, protected veteran status, or any other basis protected by applicable federal, state, or local law, and in accordance with EO 14173 and Federal Employment Laws: Equal Employment Opportunity and Employee Polygraph Protection Act.

CeLeen's Affirmative Action Program is available to any employee or applicant for employment for inspection upon request, to the extent required by federal regulations. The Affirmative Action Program can be accessed during normal business hours by making an appointment with the Human Resources Team.

Basic Requirements

Master's degree in computer science, engineering, or a related discipline such as environmental science, mathematics, or physics //OR// Bachelor's degree in a related discipline with 10 years of relevant experience.
Ability to obtain and maintain a DOE Q clearance.
Minimum of 5 years of experience in computational modeling, software development, and software documentation, including legacy software and systems.
Experience in one or more technical and business domains.
Experience programming in mixed-language scientific software environments, including Fortran, Python, and C and/or C++.
Experience working in GNU/Linux or equivalent Linux-based development environments and associated build, compilation, and debugging toolchains.
Experience with high-performance computing (HPC) systems.
Experience using HPC job schedulers, such as Slurm or equivalent workload management systems.
Must be able to demonstrate relevant project experience within the past five years.
Must have hands-on experience in project completion involving computational modeling and software development performed in a regulated, safety-critical, or other high-consequence computational environment, consistent with the type of experience required under this role.
Exceptional customer relationship management and team building skills.
Advanced organizational and leadership skills.
Outstanding communication skills, influencing abilities, and client focus.
Professional proficiency in English is required.
Demonstrated proficiency in using all Microsoft Office applications.
Must be a U.S. Citizen.
Ability to access federal facilities in compliance with Real ID. More information about Real ID can be found here: https://www.dhs.gov/real-id/about-real-id and at https://www.tsa.gov/travel/security-screening/identification.
Applicants must be currently authorized to work in the United States on a full-time basis. CeLeen will not sponsor applicants for work visas for this position.

Preferred Qualifications

Master's Degree.
Current, active DOE Q clearance.

Benefits

CeLeen offers a competitive benefits plan including:

Health, Dental, and Vision Insurance
Flexible Spending Accounts
Life and Disability Insurance
401(k)
Paid Time Off
Paid Holidays
Employee Assistance Program
Pet Insurance

*Eligibility requirements apply

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