Mission Support and Test Services, LLC

Principal Project Engineer - Capital Projects

Posted Date 7 months ago(10/2/2023 1:31 PM)
Job ID
# of Openings
Location : City
North Las Vegas
Location : State/Province (Full Name)


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.  In this environment, the best ideas need to be voiced and every opinion matters.  As such, MSTS places great value on Diversity, Equity, and Inclusion and is committed to a diverse and equitable workforce, with an inclusive culture that values and celebrates the diversity of our people, talents, ideas, and perspectives.

  • 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.

NNSS COVID-19 attestation requirements: https://www.nnss.gov/pages/nfo/WorkingForMSTS.html


The Principal Engineer will lead the engineering and execution of capital line item projects and large projects and support construction activities for the Nevada National Security Site. Perform the duties as the Control Account Manager (CAM) for design on projects, and be responsible for managing the cost, schedule, and technical performance. Plan, coordinate and manage engineering aspects of schedule, scope and budget of work that includes multiple engineering disciplines and construction for these projects – may include complex coordination with National Laboratories as well as oversight entities. 


Key Responsibilities

  • Assist the Project Manager and engineering staff with planning, coordinating, and preparing of designs, procurement documents, specifications, bid evaluations, and award recommendations for equipment. Responsible for design aspects for projects over the entire lifecycle (initiation, planning, executing, monitoring & controlling, and closing).
  • Support variance analysis reports (VARs), reviewing schedule and cost structure.
  • Recommend and coordinate preparation and modifications to designs due to field conditions or adverse situations.
  • Prepare and/or assist in the preparation of cost estimates and material takeoffs and ascertain whether the proposed material usage will be adequate for its purpose.
  • Devise integrated solutions to complex technical problems of broad scope. Solutions are expected to be comprehensive in technical and business aspects and exhaustive at all levels, including cross-disciplinary considerations.
  • Ensure deliverables comply with laws, codes, orders, and MSTS policies and procedures. Develop new initiatives for additional scopes of work.
  • Serve as an expert advisor to other project personnel, technical staff and management on technical issues. Provide advice to senior management regarding strategic development opportunities using MSTS technologies and capabilities.
  • Mentor engineering staff and other technical personnel in methods, processes, and best practices. Participate in project development by helping define customer needs, developing proposals and planning projects that will produce effective outcomes.
  • Work with customers to verify their needs are clearly defined and documented to meet their objectives and ensure engineering decisions are responsive to those needs.
  • Apply knowledge and familiarity in multiple technical disciplines and ingenuity to implement effective technical solutions.
  • Ability to interpret codes and standards within the discipline.
  • Proven ability to work effectively as a team member and leader to ensure task and project success.


  • Minimum Education and Experience:
    • 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
    • Or, Calculus-based STEM bachelor’s degree in engineering;
    • Or, for Architects, Certification from the National Council or Architectural Registration Board
    • Or Professional Engineer license;
  • Plus at least 9 years’ relevant experience. Skill building experience must demonstrate either deeper technical specialization or additional cross-disciplinary knowledge; graduate research experience may be recognized.
  • Prior Department of Energy complex work experience preferred but not required. 
  • Past project engineering experience required.
  • Past Capital Line Item Project experience preferred.
  • Past CAM experience preferred, but not required.
  • Previous experience and responsibilities should demonstrate managing design and construction support for projects.
  • Project management experience preferred but not required.
  • The primary work location will be at the Losee Road facility in North Las Vegas, Nevada. Work at the Nevada National Security Site (located 65 miles northwest of Las Vegas, Nevada) may be required up to 50% of the time in support of these functions.
  • Work schedule for this position will be 4/10’s, Monday – Thursday (subject to change).
  • 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/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, 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 $113,443.20 - $173,097.60.


Starting salary is determined based on the position market value, the individual candidate education and experience and internal equity. 


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