
Senior Mechanical Engineer
Mission Support and Test Services
Mercury, NVFull-time$102–152K/yrSeen 3 days agoSeen in employer's feed 3 days ago
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At a glance
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Requirements
Credentials this posting asks for.
Job overview
The Senior Mechanical Engineer serves as a facility or system engineer at a nuclear or high-hazard facility within MSTS’s Stockpile Experimentation & Operations Directorate. The role supports system operations, maintenance, safety responsibilities, and operational readiness at the Nevada National Security Site. It leads engineering designs and technical proposals, maintains system configuration documentation, and coordinates work with other disciplines, vendors, technicians, and early-career engineers.
Skills & qualifications
Skills
Qualifications
Full job description
Job Description
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 National Security Site.
Responsiblities
Key Responsibilities
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Responsible for maintaining overall cognizance of assigned facility systems, providing systems engineering support for operations and maintenance, and technical support of line management safety responsibilities for ensuring continued system operational readiness. This includes directing junior engineers in the performance of this function.
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Lead the development of designs, strategies, reports and technical proposals.
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Validates physical configuration of assigned systems. Maintains and updates system documents for Configuration Management (CM). Understands the functions and performance criteria for assigned systems per the Safety Basis, and acts as the subject matter expert for assigned systems.
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Supports the In-service-Inspection and Technical Surveillance Requirement execution of assigned systems.
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Contribute to solutions of assignment-related problems and issues with a limited scope and basic complexity, using a well-defined set of technologies. Solutions use established basic standards, practices and procedures as well as technical knowledge to address problems and complete tasks.
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Participate in developing field programs and designs using pre-determined principles and practices.
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Conducts or oversees the In-service Inspections and Technical Surveillance Requirement execution of assigned systems.
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Identifies and helps implement the technical requirements for maintaining systems, structures, and components.
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Contribute to designs, strategies, reports and technical proposals.
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Perform design and technical analysis activities using prescribed codes and standards, computer software, and generally accepted best management practices. This will include more complex problems and analysis.
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Assist in defining specifications for procurements and initiate purchase requests.
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Work with outside vendors as required obtaining relevant information.
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Develop a working knowledge of codes and standards of other disciplines.
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Coordinate work within their discipline on moderately complex projects.
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Often serves as a member of work teams.
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May monitor work of and provide guidance to skilled technicians and other support personnel.
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Provide direction, assistance, and mentor early career engineers.
Qualifications
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Bachelor’s degree in an engineering program accredited by the Accreditation Board for Engineering and Technology (ABET) required for Civil, Mechanical and Electrical engineering degrees
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Or, Calculus-based STEM bachelor’s degree in engineering
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Or Professional Engineer license
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Plus at least 5 years’ relevant experience. Skill building experience must demonstrate either deeper technical specialization or additional cross-disciplinary knowledge; graduate research experience may be recognized.
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Knowledge of how codes and standards of other disciplines affect their discipline.
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Knowledge is typically within one technical discipline or related discipline.
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Demonstrated desire to learn and innovate.
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Demonstrated ability to follow instructions and procedures.
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Knowledge of instrumentation & control, electrical, mechanical or electromechanical components.
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Should be self-motivated and able to complete assigned tasks with little to no supervision.
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Ideally, the applicant will have strong time-management skills. Be well organized, maintain safe work habits and have a broad range of technical interests and education.
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Excellent oral and written communication skills, including the ability to write reports and technical documents.
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The primary work location will be at the Nevada National Security Site (located 65 miles northwest of Las Vegas, Nevada).
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Work schedule for this position will be 4/10s, Monday – Thursday (subject to change).
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Pre-placement physical examination, which includes a drug screen, is required. MSTS maintains a substance abuse policy that includes random drug testing.
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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.
Annual salary range for this position is: $101,524.80 - $152,297.60.
Starting salary is determined based on the position market value, the individual candidate education and experience and internal equity.
How this job compares
Set against the 7,615 open Mechanical Engineer jobs on Olive Jobs, counted October 31, 2026.
- Pay
- This posting$102–152K/yr
- Nevada median$102–160K/yr30 salary ranges
- US median$105–160K/yr4,544 salary ranges
This range's midpoint, $127K, is close to the Nevada median midpoint ($127K) — in the middle half of Mechanical Engineer salary ranges in Nevada.
- Openings
- Olive Jobs lists 48 open Mechanical Engineer jobs in Nevada and 7,615 across the US. 2% of them nationwide are listed as remote or flexible.
- Hiring the most in Nevada
- Mission Support and Test Services (this employer)6 open
- Voyager Space6 open
- CDM Smith5 open
- Experience
- This posting asks for at least 5 years of experience; Mechanical Engineer postings that state a minimum ask for 5 years at the median (6,311 postings).
- Education
- 5,300 of the 7,615 open Mechanical Engineer jobs (70%) ask for a bachelor's degree or higher.
Counted across the open, public US postings on Olive Jobs on October 31, 2026. Pay medians are the middle values of the low ends and of the high ends of postings that list both ends of a range in the same cadence (a yearly salary or an hourly rate); a range's midpoint is halfway between its ends. Pay and experience figures resting on fewer than 20 postings are left out.
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