Company · 148 open roles

Careers at Mission Support & Test Services, LLC (MSTS)

Mission Support & Test Services, LLC (MSTS) has 148 active roles on ResuMinder right now. Score your CV instantly and use the ResuMinder extension to apply in seconds — no manual form-filling.

Active roles
148

Refreshed continuously

Median salary
$84,817–$128,785

Across active listings

Top of band reaches $229,091 for senior tracks.
Hottest cities
Mercury, NV, United States58North Las Vegas, NV, United States46Andrews Afb, MD, United States7North Las Vegas, Nevada, United States7Santa Barbara, CA, United States7Mercury, Nevada, United States5Las Vegas, NV, United States5Las Vegas, Nevada, United States3

All open roles

148 positions at Mission Support & Test Services, LLC (MSTS)

Auditor II

Mission Support & Test Services, LLC (MSTS)·North Las Vegas, NV, United States

OnsiteFull-time$65,250–$97,885/year4d ago

Mission Support and Test Services, LLC (MSTS) manages and operates the Nevada National Security Sites (NNSS) for the U.S. National Nuclear Security Administration (NNSA), a semi-autonomous agency within the U.S. Department of Energy (DOE). The NNSS is an enterprise of special-pur…

Data analysisaudit fieldworkinterviewwalkthroughs+8

Safeguards & Security Specialist II (Performance Testing)

Mission Support & Test Services, LLC (MSTS)·Mercury, NV, United States

OnsiteFull-time$65,250–$97,885/year4d ago

Mission Support and Test Services, LLC (MSTS) manages and operates the Nevada National Security Sites (NNSS) for the U.S. National Nuclear Security Administration (NNSA), a semi-autonomous agency within the U.S. Department of Energy (DOE). The NNSS is an enterprise of special-pur…

Performance Testingprotective forcephysical security systemsnuclear material control and accountability+3

Safeguards & Security Specialist II - MC&A Accountant

Mission Support & Test Services, LLC (MSTS)·Mercury, NV, United States

OnsiteFull-time$65,250–$97,885/year10d ago

Mission Support and Test Services, LLC (MSTS) manages and operates the Nevada National Security Sites (NNSS) for the U.S. National Nuclear Security Administration (NNSA), a semi-autonomous agency within the U.S. Department of Energy (DOE). The NNSS is an enterprise of special-pur…

accounting principlesautomated accounting systemsnuclear material trackingData Integrity+5

Mechanical Engineer II

Mission Support & Test Services, LLC (MSTS)·Mercury, NV, United States

OnsiteFull-time$83,075–$124,613/year16d ago

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 experi…

system engineeringConfiguration Managementtechnical surveillanceInstrumentation+2

DAF Deputy System Engineering Manager I

Mission Support & Test Services, LLC (MSTS)·Mercury, NV, United States

OnsiteFull-time16d ago

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 experi…

IT Support Specialist III

Mission Support & Test Services, LLC (MSTS)·North Las Vegas, NV, United States

OnsiteFull-time17d ago

Mission Support and Test Services, LLC (MSTS) manages and operates the Nevada National Security Sites (NNSS) for the U.S. National Nuclear Security Administration (NNSA), a semi-autonomous agency within the U.S. Department of Energy (DOE). The NNSS is an enterprise of special-pur…

Active DirectorySCCMVmWareOffice 365+8

IT Support Specialist II

Mission Support & Test Services, LLC (MSTS)·North Las Vegas, NV, United States

OnsiteFull-time17d ago

Mission Support and Test Services, LLC (MSTS) manages and operates the Nevada National Security Sites (NNSS) for the U.S. National Nuclear Security Administration (NNSA), a semi-autonomous agency within the U.S. Department of Energy (DOE). The NNSS is an enterprise of special-pur…

Active Directoryazure active directoryMicrosoft WindowsMicrosoft 365+6

IT Support Specialist III

Mission Support & Test Services, LLC (MSTS)·North Las Vegas, NV, United States

OnsiteFull-time17d ago

Mission Support and Test Services, LLC (MSTS) manages and operates the Nevada National Security Sites (NNSS) for the U.S. National Nuclear Security Administration (NNSA), a semi-autonomous agency within the U.S. Department of Energy (DOE). The NNSS is an enterprise of special-pur…

Active DirectorySCCMVmWareOffice 365+8

Principal Splunk Analyst (Principal Cyber Security Analyst)

Mission Support & Test Services, LLC (MSTS)·North Las Vegas, NV, United States

OnsiteFull-time$118,560–$180,814/year17d ago

Mission Support and Test Services, LLC (MSTS) manages and operates the Nevada National Security Sites (NNSS) for the U.S. National Nuclear Security Administration (NNSA), a semi-autonomous agency within the U.S. Department of Energy (DOE). The NNSS is an enterprise of special-pur…

SplunkSplunk Enterprise SecuritySplunk SOARSplunk ITSI+8

Facility System Engineer - Senior Engineer (Mechanical Engineer)

Mission Support & Test Services, LLC (MSTS)·Mercury, NV, United States

OnsiteFull-time$101,525–$152,298/year17d ago

Mission Support and Test Services, LLC (MSTS) manages and operates the Nevada National Security Sites (NNSS) for the U.S. National Nuclear Security Administration (NNSA), a semi-autonomous agency within the U.S. Department of Energy (DOE). The NNSS is an enterprise of special-pur…

system engineeringConfiguration Managementsafety basisunreviewed safety question+4

Senior Project Manager

Mission Support & Test Services, LLC (MSTS)·North Las Vegas, NV, United States

OnsiteFull-time$100,755–$151,133/year17d ago

Mission Support and Test Services, LLC (MSTS) manages and operates the Nevada National Security Sites (NNSS) for the U.S. National Nuclear Security Administration (NNSA), a semi-autonomous agency within the U.S. Department of Energy (DOE). The NNSS is an enterprise of special-pur…

Project Managementproject chartercommunication planningMicrosoft Project+6

Administrative Specialist II - Safeguards and Security (S&S) Programs

Mission Support & Test Services, LLC (MSTS)·Mercury, NV, United States

OnsiteFull-time$65,250–$97,885/year18d ago

Mission Support and Test Services, LLC (MSTS) manages and operates the Nevada National Security Sites (NNSS) for the U.S. National Nuclear Security Administration (NNSA), a semi-autonomous agency within the U.S. Department of Energy (DOE). The NNSS is an enterprise of special-pur…

Microsoft OfficecorrespondenceSharePointOracle Fusion+3

Senior Principal Scientist

Mission Support & Test Services, LLC (MSTS)·Los Alamos, NM, United States

OnsiteFull-time$147,805–$229,091/year18d ago

Mission Support and Test Services, LLC (MSTS) manages and operates the Nevada National Security Sites (NNSS) for the U.S. National Nuclear Security Administration (NNSA), a semi-autonomous agency within the U.S. Department of Energy (DOE). The NNSS is an enterprise of special-pur…

beamline diagnosticsoptical imagingfiber optic inspectionplasma diagnostics+6

Principal Safeguards & Security Specialist - Technical Security Analyst

Mission Support & Test Services, LLC (MSTS)·North Las Vegas, NV, United States

OnsiteFull-time18d ago

Mission Support and Test Services, LLC (MSTS) manages and operates the Nevada National Security Sites (NNSS) for the U.S. National Nuclear Security Administration (NNSA), a semi-autonomous agency within the U.S. Department of Energy (DOE). The NNSS is an enterprise of special-pur…

probabilistic risk assessmentinsider threat mitigationindependent judgment

Principal Safeguards & Security Specialist - Exercise Coordinator

Mission Support & Test Services, LLC (MSTS)·Mercury, NV, United States

OnsiteFull-time$101,982–$155,522/year18d ago

Mission Support and Test Services, LLC (MSTS) manages and operates the Nevada National Security Sites (NNSS) for the U.S. National Nuclear Security Administration (NNSA), a semi-autonomous agency within the U.S. Department of Energy (DOE). The NNSS is an enterprise of special-pur…

Technical WritingPublic SpeakingMicrosoft OfficeInterpersonal Communication+1

Senior Emergency Response Specialist - Emergency Management Coordinator

Mission Support & Test Services, LLC (MSTS)·Mercury, NV, United States

OnsiteFull-time$80,579–$120,869/year18d ago

Mission Support and Test Services, LLC (MSTS) manages and operates the Nevada National Security Sites (NNSS) for the U.S. National Nuclear Security Administration (NNSA), a semi-autonomous agency within the U.S. Department of Energy (DOE). The NNSS is an enterprise of special-pur…

emergency managementTechnical WritingMicrosoft OfficeInterpersonal Communication+1

Facility System Engineer - Engineer II (Mechanical Engineer)

Mission Support & Test Services, LLC (MSTS)·Mercury, NV, United States

OnsiteFull-time18d ago

Mission Support and Test Services, LLC (MSTS) manages and operates the Nevada National Security Sites (NNSS) for the U.S. National Nuclear Security Administration (NNSA), a semi-autonomous agency within the U.S. Department of Energy (DOE). The NNSS is an enterprise of special-pur…

electrical engineeringSystem DesignConfiguration Managementfire protection system+5

Facility System Engineer - Senior Engineer (Electrical Engineer)

Mission Support & Test Services, LLC (MSTS)·Mercury, NV, United States

OnsiteFull-time18d ago

Mission Support and Test Services, LLC (MSTS) manages and operates the Nevada National Security Sites (NNSS) for the U.S. National Nuclear Security Administration (NNSA), a semi-autonomous agency within the U.S. Department of Energy (DOE). The NNSS is an enterprise of special-pur…

system engineeringelectrical engineeringfire protection systeminstrumentation and control+6

Facility System Engineer - Senior Engineer (Mechanical Engineer)

Mission Support & Test Services, LLC (MSTS)·Mercury, NV, United States

OnsiteFull-time18d ago

Mission Support and Test Services, LLC (MSTS) manages and operates the Nevada National Security Sites (NNSS) for the U.S. National Nuclear Security Administration (NNSA), a semi-autonomous agency within the U.S. Department of Energy (DOE). The NNSS is an enterprise of special-pur…

system engineeringConfiguration Managementsafety basisunreviewed safety question+8

Facility System Engineer - Engineer II (Mechanical Engineer)

Mission Support & Test Services, LLC (MSTS)·Mercury, NV, United States

OnsiteFull-time18d ago

Mission Support and Test Services, LLC (MSTS) manages and operates the Nevada National Security Sites (NNSS) for the U.S. National Nuclear Security Administration (NNSA), a semi-autonomous agency within the U.S. Department of Energy (DOE). The NNSS is an enterprise of special-pur…

system engineeringConfiguration Managementsafety basisHVAC+4

Senior Mechanical Engineer

Mission Support & Test Services, LLC (MSTS)·Mercury, NV, United States

OnsiteFull-time$101,525–$152,298/year18d ago

Perform duties as a facility/system engineer (Senior Mechanical Engineer) at one of the nuclear or high hazard facilities within the MSTS Stockpile Experimentation & Operations Directorate. Positions are available at various locations within the Forward Areas of the Nevada Nation…

system engineeringConfiguration ManagementTechnical Analysissafety responsibility+2

Principal Data Engineer (Prin Applications Analyst)

Mission Support & Test Services, LLC (MSTS)·North Las Vegas, NV, United States

OnsiteFull-time$118,560–$180,814/year18d ago

Mission Support and Test Services, LLC (MSTS) manages and operates the Nevada National Security Sites (NNSS) for the U.S. National Nuclear Security Administration (NNSA), a semi-autonomous agency within the U.S. Department of Energy (DOE). The NNSS is an enterprise of special-pur…

SQLPythonRPower BI+5

RCT Principal Technologist

Mission Support & Test Services, LLC (MSTS)·Mercury, NV, United States

OnsiteFull-time$40–$60/hour18d ago

Mission Support and Test Services, LLC (MSTS) manages and operates the Nevada National Security Sites (NNSS) for the U.S. National Nuclear Security Administration (NNSA), a semi-autonomous agency within the U.S. Department of Energy (DOE). The NNSS is an enterprise of special-pur…

radiological controlRadiation protectionMicrosoft WordExcel+4

Senior Project Manager - Physical Security Systems

Mission Support & Test Services, LLC (MSTS)·North Las Vegas, NV, United States

OnsiteFull-time$100,755–$151,133/year18d ago

The Physical Security Systems Department is seeking a high-level performer to join our team as a Senior Project Manager to lead and coordinate physical security systems (PSS) projects, including planning, stakeholder coordination, project oversight, and system commissioning. This…

Project Managementphysical security systemsStakeholder coordinationProject planning+4

Tech stack signals

What Mission Support & Test Services, LLC (MSTS) hires for

Most-requested skills across active job descriptions.

Configuration Managementcross-disciplinary knowledgesystem engineeringgraduate research experiencesecurity clearancesafety basisfire protection systemActive DirectoryPowerShellPythonunreviewed safety questionSystem Design
Mission Support & Test Services, LLC (MSTS) careers — 148 open roles | ResuMinder | ResuMinder