Jobs in the United States

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Added 1 min ago
Senior System Tests & Diagnostics Engineer
Graphcore
Austin, TX
AI accelerators or high-performance computing systems
Added 2 mins ago
Senior Estimator
Matrix Career Opportunities
Catoosa, OK
The Senior Estimator is responsible for developing detailed fabrication estimates for industrial components such as pressure vessels, pipe spools, and structural steel items, requiring an…
Added 2 mins ago
Project Manager
Shiel Sexton
Indianapolis, IN
…Business Development efforts. Our Project Manager 1 reports to the Senior Project Manager and Project Executive…
Added 3 mins ago
Senior Software Engineer - Java Cloud (Health100 Platform)
CVS Health
Work at Home, TX · Work At Home, AZ · Work At Home, CT · Work At Home, IL · Work At Home, MA · Work At Home, NY
As a Senior Software Engineer for Health100, you will play a crucial role within a collaborative team - designing, developing, and maintaining backend services and APIs while ensuring…
Added 3 mins ago
Principal Engineer, Quality Engineering
Analog Devices Inc.
CA
We are seeking an experienced Quality Engineer to lead product quality initiatives for power delivery solutions supporting data center applications. This is a senior technical leadership…
Added 6 mins ago
Construction Manager - Healthcare
Vanir Construction Management, Inc.
San Bernardino, CA
Collaborate closely with Department of State Hospital senior management and project stakeholders to align project goals and priorities.
Added 6 mins ago
BV
Summer Analyst 2028
Bessemer Venture Partners - Analyst Program
NY
- $2,200 USD / week
…(including AI and robotics), cognitive science, economics, earth systems, business, international relations, art history, product design, English, philosophy, electrical and computer…
Added 6 mins ago
Waterfront Production Support Analyst
Serco USA
Gulfport, MS · Mobile, AL · New Orleans, LA · Pascagoula, MS · Pensacola, FL
Monitor production progress, ensure compliance to ship specifications and document discrepancies for the Government team under the guidance of a more senior analyst or engineer.
Added 7 mins ago
Sr. Data Engineer
Purpose Financial
Greenville, SC
The Senior Data Engineer will play a pivotal role in designing, building, and maintaining our data infrastructure and pipelines to enable efficient collection, storage, processing, and…
Added 7 mins ago
Senior Associate Software Developer, Risk Engine
SAS
Cary HQ, NC
…completion of task. Ensures quality through functional, unit and performance testing; works closely with testing by providing thorough reviews of the test plan and communicates when updates…
Added 9 mins ago
AI and Data Science Product Manager
Merck Sharp & Dohme LLC
PA · NJ · MA
You'll be mentored by a senior product manager and work directly alongside other data scientists, developers, and scientific subject matter experts. You'll gain hands-on exposure to large…
Added 9 mins ago
Industrial Network Engineer – OT AI Enablement
Strategic Staffing Solutions
Houston, TX
The client is seeking a Senior Industrial Network Engineer specializing in Operational Technology (OT) AI Enablement to support the secure deployment, integration, and operational support…
Added 9 mins ago
Industrial Network Engineer – OT AI Enablement
Strategic Staffing Solutions
Houston, TX
The client is seeking a Senior Industrial Network Engineer specializing in Operational Technology (OT) AI Enablement to support the secure deployment, integration, and operational support…
Added 9 mins ago
Rotating Equipment Engineer - Associate
ExxonMobil
Baytown, TX
Our Senior Engineers play a pivotal role in the successful operation of our plants and are responsible for initiating and leading improvements to unit performance in safety, production, and…
Added 11 mins ago
Lead Test Engineer
STR
Las Vegas, NV
Design, direct, and implement test and evaluation solutions for advanced radar, RF sensing, communication, and related systems. Apply simulation, modeling, and real-world testing to…
Added 11 mins ago
Senior Training Engineer
Fuller Technologies Inc
United States
The Senior Training Engineer is a senior technical field leader responsible for driving complex training and optimization activities across industrial process systems. This role serves as a…
Added 11 mins ago
Senior Software Engineer - Operational Improvement
WGU Academy
Salt Lake City, UT
The Senior Software Engineer is responsible for the research, design, development, analysis, testing, and implementation of software operating or application systems. They communicate…
Added 11 mins ago
3PL - Senior Logistics Engineer
Tunista Logistics Solutions LLC
Lexington, KY
We are seeking a detail-oriented self-starter individual to join our team as a Logistics Engineer Sr. who plays a vital role in ensuring the efficient operation of government program and…
Added 12 mins ago
DO
Electrical Design/Functional Manager
Department of Transportation
CA
- $11,437 to $14,315 USD / month
Under general direction of a Supervising Transportation Engineer, the Senior Transportation Electrical Engineer (Supervisor) supervises staff and oversees processes to ensure efficient,…
Added 13 mins ago
Senior Associate Software Developer, Risk Engine
SAS
Cary HQ, NC
…completion of task. Ensures quality through functional, unit and performance testing; works closely with testing by providing thorough reviews of the test plan and communicates when updates…
Added 14 mins ago
Senior Corporate Security Engineer
Charlie Health Engineering, Product & Design
Nashville, TN · NY
The Senior Corporate Security Engineer role is responsible for designing, building and operating the technical security systems and controls that protect Charlie Health’s corporate…
Added 14 mins ago
Security Engineer III
Amazon.com Services LLC
Arlington, VA · Seattle, WA
AWS Security is looking for a Senior Application Security Engineer to help validate that our services, applications, and websites are designed and implemented to the highest security…
Added 16 mins ago
AI and Data Science Product Manager
Merck
West Point, PA · Cambridge, MA · Rahway, NJ
You'll be mentored by a senior product manager and work directly alongside other data scientists, developers, and scientific subject matter experts. You'll gain hands-on exposure to large…
Added 16 mins ago
Senior Software Engineer
Emergent Software
Remote, United States
…purchase and managing ongoing ownership. They are seeking a Senior Software Engineer to design, build, and evolve customer-facing features, services, and systems that power this experience.…
Added 16 mins ago
J
Sr. QA/Test Automation Engineer
Jobot
Gaithersburg, MD
- $140,000 to $175,000 USD / year
…DevSecOps, virtualization, reliability engineering, and large-scale systems integration, we help organizations modernize infrastructure, improve operational efficiency, and support…

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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