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Mission Support And Test Services

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Mission Support and Test Services, LLC

Senior Scientist

NV · On-site

$80K - $109K/yr

Mission Support and Test Services, LLC (MSTS) manages and operates the Nevada National Security Site (NNSS) for the U.S. National Nuclear Security Administration (NNSA). Our MISSION is to help ensure ...

Motional

Mission Support Specialist

Las Vegas, NV · On-site

While primarily office-based, the Mission Support Specialist will be present at test facilities, requiring the ability to safely operate and ride in autonomous vehicles, oversee vehicle inspections ...

Mission Support and Test Services, LLC

RCT Technician I

NV · On-site

$17.25 - $23.75/hr

Mission Support and Test Services, LLC (MSTS) manages and operates the Nevada National Security Site (NNSS) for the U.S. National Nuclear Security Administration (NNSA). Our MISSION is to help ensure ...

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Infographic showing various job openings at Mission Support And Test Services in the United States as of August 2026, with employment types broken down into 100% Full Time. Highlights an 92% Physical, and 8% Hybrid job distribution.

RCT Technologist

Mission Support and Test Services, LLC

NV • On-site

Full-time

Medical, Dental, Vision, Retirement, PTO

Re-posted 16 days ago

Job description


Mission Support and Test Services, LLC (MSTS) manages and operates the Nevada National Security Site (NNSS) for the U.S. National Nuclear Security Administration (NNSA). Our MISSION is to help ensure the security of the United States and its allies by providing high-hazard experimentation and incident response capabilities through operations, engineering, education, field, and integration services and by acting as environmental stewards to the Site's Cold War legacy. Our VISION is to be the user site of choice for large-scale, high-hazard, national security experimentation, with premier facilities and capabilities below ground, on the ground, and in the air. (See NNSS.gov for our unique capabilities.) Our 2,750+ professional, craft, and support employees are called upon to innovate, collaborate, and deliver on some of the more difficult nuclear security challenges facing the world today.
  • MSTS offers our full-time employees highly competitive salaries and benefits packages including medical, dental, and vision; both a pension and a 401k; paid time off and 96 hours of paid holidays; relocation (if located more than 75 miles from work location); tuition assistance and reimbursement; and more.
  • MSTS is a limited liability company consisting of Honeywell International Inc. (Honeywell), Jacobs Engineering Group Inc. (Jacobs), and HII Nuclear Inc.

Responsibilities
The Radiological Control Department is looking for a high performing individual with an attention to detail to perform RCT duties as a Technologist.
Key Responsibilities
  • Perform radiological surveys and monitor radiological conditions and work practices utilized Mission Support & Test Services, LLC (MSTS) and/or subcontractors in assigned areas.
  • Prior to use, verify that radiological instrumentation is functioning properly. Such instrumentation includes, but is not limited to, air sampling equipment, dose rate meters, and contamination monitors.
  • Select and post various radiological signs to ensure that radiological work sites are properly identified to prevent unauthorized access.
  • Review radiological work permits, work packages, and procedures, ensuring that work is performed in accordance with approved work control documents.
  • Participate in briefings and advise other personnel on radiological conditions and requirements of a particular work situation.
  • Works under general supervision with technical direction provided.
  • Performs work of moderate complexity, generally in support of scientists and engineers.
  • Assists in compiling and analyzing measurement data.
  • Participates in field operations, data collection, and report generation of radiation detection.
  • May provide direction to less experienced technicians and monitor the work of personnel.
  • Ensure generation of records for radiation surveys and other job activities utilize appropriate forms and logbooks, as required.
  • Implement stop work authority in a responsible manner when radiological or safety conditions warrant.
  • Assist, as assigned, in accident or occurrence investigations.
  • Support/participate with and be a member of various emergency response teams with the potential of U.S. and worldwide travel.
  • May coordinate assigned work with other technical personnel as directed.
  • Maintain current training and qualifications and attend onsite and offsite training as necessary to maintain competency in the radiological control field.
  • Perform other duties assigned by Management.

Qualifications
  • Associate degree in field related to the position plus at least 3 years' progressive related experience or High School diploma plus 5 years' progressive related experience.
  • Ability to work independently or in a team environment on a wide variety of tasks is critical.
  • Working knowledge of Microsoft Word, Excel, Adobe Acrobat, and Outlook is required. Must be fitted for and qualify for use with various respiratory protection and personal protective equipment.
  • Must be able to participate in National Response Asset Deployment activities.
  • May be required to participate in the Human Reliability Program (HRP).
  • Must be able to qualify within 6 months of start date to the DOE Radiological Control Technician (RCT) standardized core training programs.
  • Must be self-motivated and able to complete tasks with minimal supervision.
  • Must posses strong verbal and written communication skills. Ability to work well as an individual or in a team environment.
  • Basic knowledge of radiation protection principles is required.
  • The primary work location will be at the Nevada National Security Site (located 65 miles northwest of Las Vegas, Nevada).
  • Work schedule will be 4/10s Monday through Thursday. (subject to change), overtime may be required.
  • May be requested to perform on call work and must be able to work nonstandard hours when required.
  • Pre-placement physical examination, which includes a drug screen, is required. MSTS maintains a substance abuse policy that includes random drug testing.
  • Must possess a valid driver's license.

MSTS is required by DOE directive to conduct a pre-employment drug test and background review that includes checks of personal references, credit, law enforcement records, and employment/education verifications. Applicants offered employment with MSTS are also subject to a federal background investigation to meet the requirements for access to classified information or matter if the duties of the position require a DOE security clearance. Substance abuse or illegal drug use, falsification of information, criminal activity, serious misconduct or other indicators of untrustworthiness can cause a clearance to be denied or terminated by DOE, resulting in the inability to perform the duties assigned and subsequent termination of employment. In addition, Applicants for employment must be able to obtain and maintain a DOE Q-level security clearance, which requires U.S. citizenship, at least 18 years of age. Reference DOE Order 472.2, "Personnel Security". If you hold more than one citizenship (i.e., of the U.S. and another country), your ability to obtain a security clearance may be impacted.
Department of Energy Q Clearance (position will be cleared to this level). Reviews and tests for the absence of any illegal drug as defined in 10 CFR Part 707.4, "Workplace Substance Abuse Programs at DOE Sites," will be conducted. Applicant selected will be subject to a Federal background investigation, required to participate in subsequent reinvestigations, and must meet the eligibility requirements for access to classified matter. Successful completion of a counterintelligence evaluation, which may include a counterintelligence-scope polygraph examination, may also be required. Reference 10 CFR Part 709, "Counterintelligence Evaluation Program."
MSTS is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, national origin, disability, veteran status or other characteristics protected by law. MSTS is a background screening, drug-free workplace.
Hourly salary range for this position is: $29.33 - $44.00.
Starting salary is determined based on the position market value, the individual candidate education and experience and internal equity.

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