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Added 4 mins ago
New College Grad: Engineer, Edge Systems Architecture
Micron Technology
Boise, ID · Boise
Chip in to benchmarking and system-level analysis across compute, Memory, and Storage to evaluate performance, power, and architectural trade-offs.
Added 18 mins ago
Senior SimCorp GAIN Engineer
Jobgether
Remote, United States
Investigate and reverse-engineer existing configurations to understand data flows and highly customized processing logic.
Added 18 mins ago
J
Principal Resource Adequacy Planning Engineer
Jobgether
Remote, United States
- $175,325 to $199,225 USD / year
…Western Interconnection. As Principal Resource Adequacy Planning Engineer, you will lead advanced probabilistic resource adequacy studies and provide technical guidance on critical planning…
Added 20 mins ago
Space Lasers Engineer, Satellites (Starlink)
SpaceX
Redmond, WA
As a SpaceX optical engineer, you will be responsible for free-space optical system design, validation, and operation. You will shape the future of laser communication systems and directly…
Added 20 mins ago
Optical Engineer, Satellites (Starlink)
SpaceX
Redmond, WA
As a SpaceX optical engineer, you will be responsible for free-space optical system design, validation, and operation. You will shape the future of laser communication systems and directly…
Added 20 mins ago
Mechanical Engineer - Satellite Payload (Starlink)
SpaceX
Redmond, WA
MECHANICAL ENGINEER, SATELLITE PAYLOAD (STARLINK)
Added 20 mins ago
Mechanical Engineer, Satellite Harnessing (Starlink)
SpaceX
Redmond, WA
As an Avionics Design Engineer on the Starlink team, you will own harness design from concept and component selection, through to production, qualification, and system integration. This…
Added 20 mins ago
Harness Design Engineer, Satellites (Starlink)
SpaceX
Redmond, WA
As an Harness Design Engineer on the Starlink team, you will own harness design from concept and component selection, through to production, qualification, and system integration. This…
Added 24 mins ago
Ground Software Lead Engineer/Architect
Northrop Grumman
Gilbert, AZ
Northrop Grumman’s Space Sector is seeking a Ground Software Lead Engineer/Architect (Level 6) to join our team of highly qualified, diverse professionals within the Western Region Software…
Added 25 mins ago
Systems Engineer: Electrical - Level 1 or 2 (AHT)
Northrop Grumman
Chandler, AZ
The Electrical Systems Engineer serves as a primary bridge between the Systems Engineering and Electrical Design. The role requires a strong grasp of system‑level requirements and…
Added 25 mins ago
Lead Principal Electrical Engineer III or IV (SBI LOE3)
Northrop Grumman
Chandler, AZ
Oversees and reviews system architecture, block diagrams, avionics specifications, qualification testing, and test data review of completed designs.
Added 25 mins ago
Senior Quality Systems Specialist
Medtronic
Tempe, AZ
…growth and cross-functional collaboration as we work together to engineer the…
Added 25 mins ago
Senior Principal RF Engineer
RTX Corporation
tucson, AZ
The Advanced Effector Guidance Systems Team is searching for a Senior Principal Electrical Systems Engineer with experience in developing RF subsystems, Radars or RF seekers. The role of…
Added 25 mins ago
Navigation/IMU Engineer II
RTX Corporation
tucson, AZ
The Advanced Effector Guidance Systems (AEGS) Department is searching for a Navigation/IMU engineer with which will work with the experienced Navigation/IMU engineers in support of…
Added 25 mins ago
Principal RF Data Link Engineer
RTX Corporation
tucson, AZ
Experience with RF subsystems analysis and integration.
Added 25 mins ago
Principal Navigation/IMU Engineer
RTX Corporation
tucson, AZ
The Advanced Effector Guidance Systems (AEGS) Department is searching for a Senior Navigation/IMU Engineer with which will work with the experienced Navigation/IMU engineers in support of…
Added 25 mins ago
Principal GPS Subsystem Engineer
RTX Corporation
tucson, AZ
The Guidance Electronics Team is searching for a Principal GPS Subsystems Engineer with experience in GPS technology. The role of the GPS Subsystems Engineer is to provide GPS electronics…
Added 25 mins ago
Senior GPS Subsystems Engineer
RTX Corporation
tucson, AZ
The Guidance Electronics Team is searching for a Principal GPS Subsystems Engineer with experience in GPS technology. The role of the GPS Subsystems Engineer is to provide GPS electronics…
Added 25 mins ago
Senior Principal GPS Subsystem Engineer
RTX Corporation
tucson, AZ
RTX is seeking an experienced GPS Guidance Electronics Subsystem Engineer to join the Guidance Electronics Team supporting advanced missile systems. This role is responsible for the…
Added 25 mins ago
Senior Software Safety / Senior System Safety Engineer
RTX Corporation
tucson, AZ
Developing and implementing one or more MIL-STD-882E compliant system safety programs involving management (task series 100), analysis (task series 200), evaluation (task series 300), and…
Added 25 mins ago
Software / System Safety Engineer II
RTX Corporation
tucson, AZ
This is an exciting opportunity for a highly motivated Software / System Safety Engineer II to join an innovative team in Tucson, AZ.
Added 25 mins ago
Senior Low Observable Materials Engineer
RTX Corporation
tucson, AZ
You will be responsible for material and process development, characterization and system level integration in support of all Raytheon product lines and new business.
Added 25 mins ago
Low Observable (RCS) design, Analysis, and Test Engineer
RTX Corporation
tucson, AZ
Radar Cross Section (RCS) design, analysis, and test
Added 25 mins ago
Senior Principal Low Observable Design & Analysis Engineer
RTX Corporation
tucson, AZ
Radar Cross Section (RCS) design, analysis, and test
Added 25 mins ago
Senior Principal Low Observables Material Engineer
RTX Corporation
tucson, AZ
You will be responsible for material and process development, characterization and system level integration in support of all Raytheon product lines and new business.

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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