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Added 2 mins ago
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Senior Cloud Operations Engineer
Pantheon Data
Reston, VA
- $82,000 to $190,000 USD / year
Pantheon Data is seeking a Senior Cloud Operations Engineer to build, run, and continuously improve the AWS GovCloud infrastructure that hosts our ML-enabled workloads and applications for…
Added 3 mins ago
Senior Data Center Engineer
USP
Rockville, MD
Senior Data Center Engineer, The United States Pharmacopeial Convention, Rockville, MD.
Added 4 mins ago
M
Google Cloud Engineer
Markon
Herndon, VA
- $170,000 to $200,000 USD / year
Markon is seeking an experienced Google Cloud Engineer (Mid–Senior) to support an Intelligence Community client in Chantilly, Virginia. This position will design, deploy, secure, and…
Added 6 mins ago
Senior DevOps Engineer
Exegy
St Louis, MO
We are looking for an experienced, forward-thinking Senior DevOps Engineer to join our newly formed DevOps team within our Market Data Engineering organization. In this role, you will be a…
Added 10 mins ago
O
Senior Associate System Engineer
Oracle
United States
- $23.8 to $56.83 USD / hour
As a Senior Associate System Engineer on the Upgrade Center Integrated Technologies team, you will be responsible for providing consulting implementation and upgrade services to clients…
Added 10 mins ago
O
Senior Associate System Engineer
Oracle
United States
- $23.8 to $56.83 USD / hour
As a Senior Associate System Engineer on the Upgrade Center Integrated Technologies team, you will be responsible for providing consulting implementation and upgrade services to clients…
Added 10 mins ago
O
Senior Associate System Engineer
Oracle
United States
- $23.8 to $56.83 USD / hour
As a Senior Associate System Engineer on the Upgrade Center Integrated Technologies team, you will be responsible for providing consulting implementation and upgrade services to clients…
Added 21 mins ago
Senior Security Architect - TS/SCI
Sunayu
Bethesda, MD
As a Cloud Cyber Security Engineer, you will be responsible for providing technical security expertise in securing, hardening, and maintaining compliance of cloud-based software platforms…
Added 25 mins ago
SL
Senior Detection Engineer
Solutions³ LLC
Arlington, VA
- $131,000 to $150,000 USD / year
Solutions³ LLC is seeking an experienced and technically proficient Senior Detection Engineer who develops, validates, deploys, and tunes detection logic supporting proactive threat hunting…
Added 25 mins ago
SL
Senior Detection Engineer
Solutions³ LLC
Arlington, VA
- $131,000 to $150,000 USD / year
Solutions³ LLC is seeking an experienced and technically proficient Senior Detection Engineer who develops, validates, deploys, and tunes detection logic supporting proactive threat hunting…
Added 58 mins ago
Senior System Tests & Diagnostics Engineer
Graphcore
Austin, TX
We are seeking a highly skilled System Tests & Diagnostics Engineer to develop, extend, and integrate specialized silicon validation and diagnostics tools for next-generation AI SoCs.
Added 1 hour ago
Software Engineer - Forensics
Everpure
Santa Clara, CA
…storage deployments for top-tier hyperscale partners. As a Senior Software Engineer on the Hyperscale Product Escalations team (known internally as a Forensics Engineer), you will serve as…
Added 1 hour ago
Systems Engineer
Astraeus Operations LLC
UNAVAILABLE, VA
The Systems Engineer provides on-site, 24/7/365 Tier 1 operations for Google Public Sector’s USG1 sovereign and classified cloud environments, initially supporting Google Distributed Cloud…
Added 2 hours ago
Infrastructure Architect
Mesa Brand
Madison, AL
…identity, Microsoft 365, Azure, and endpoint management. This is a senior, hands-on role. You will design solutions, build and change production systems yourself, lead incident response,…
Added 2 hours ago
Senior Dynatrace Observability Engineer / Subject Matter Expert (SME)
Derex Technologies Inc
Remote, United States
Position: Senior Dynatrace Observability Engineer / Subject Matter Expert (SME)
Added 2 hours ago
R
Cyber Implementation Engineer III
RISA
Springfield, VA
- $117,000 to $128,000 USD / year
RISA is hiring a Cybersecurity Implementation Engineer to build, deploy, and sustain the cybersecurity infrastructure of an Intelligence Community customer, on premises and in the cloud.…
Added 2 hours ago
Senior/Staff Platform Engineer, Infrastructure & Security
Quilter
Remote, United States
We’re looking for a Senior or Staff Platform Engineer to build and operate secure cloud infrastructure and automate the controls we depend on.
Added 2 hours ago
Software Engineer Senior Consultant I (Remote, U.S.)
Allstate
Remote, United States
We are looking for a Software Engineer, Senior Consultant I with hands-on experience in Kong API and AI Gateway technology, cloud platforms, and infrastructure automation. The ideal…
Added 2 hours ago
Systems Engineer
Astraeus Operations LLC
UNAVAILABLE, VA
The Systems Engineer provides on-site, 24/7/365 Tier 1 operations for Google Public Sector’s USG2 sovereign and classified cloud environments, initially supporting Google Distributed Cloud…
Added 2 hours ago
Senior Software Engineer
Command Holdings
N/A, NM
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…
Added 2 hours ago
CyberArk Engineer
HEXAWARE
United States
The role requires a senior-level CyberArk professional with strong hands-on experience administering and supporting the platform.
Added 2 hours ago
SR. PLATFORM ENGINEER - PLATFORM OPERATIONS
Huntington Ingalls Industries
Newport News, VA
Provides senior level engineering support for enterprise platform operations across cloud environments, container orchestration systems, automation frameworks, and middleware services.…
Added 2 hours ago
SR. PLATFORM ENGINEER - PLATFORM OPERATIONS
HII
Newport News, VA
Provides senior level engineering support for enterprise platform operations across cloud environments, container orchestration systems, automation frameworks, and middleware services.…
Added 2 hours ago
Multi-Domain DevSecOps Engineer (Hybrid)
BAE Systems
San Diego, CA
BAE Systems is seeking a Senior DevSecOps Engineer who will be expected to demonstrate a high level of technical expertise, innovative thought leader, strong troubleshooting skills, a…
Added 2 hours ago
Site Reliability Engineer
Priority Technology Holdings, LLC
Alpharetta, GA
As a Site Reliability Engineer, you will keep Priority's payment, payables and banking platforms available, fast and recoverable. You will be the dedicated SRE for a product workstream:…

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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