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Principal Technical Advisor

Geosyntec Consultants · Aiken, South Carolina

Posted November 7, 2026

About the Role

Overview

Longenecker & Associates (L&A), a Geosyntec Company, is a trusted partner enabling critical missions across the U.S. Department of Energy (DOE) complex for more than 30 years. We contribute to DOE’s nuclear security and environmental remediation enterprise by providing the highest-caliber staff and experts. We are seeking a motivated Principal Technical Advisor to contribute to our mission supporting our work at Savannah River Nuclear Solutions in Aiken, SC.

 

Geosyntec is an innovative, international engineering and consulting firm serving private and public-sector clients to address new ventures and complex problems involving our environment, natural resources, and civil infrastructure. Our engineers, scientists, technical and project employees serve our clients from offices across the world. Ranked by ENR as one of the top environmental engineering design firms, Geosyntec is internationally known for its technical leadership, broad experience, and exceptional client service.

 

We invest in our people.  Each employee is unique, and your career at Geosyntec will be too.  We offer competitive pay and benefits, and well-being programs to support you and your family.

 

To Learn More Visit: http://www.geosyntec.com/careers/.

Essential Duties and Responsibilities

  • Establish cost-effective technical solutions to issues generated by frequently changing requirements; define and conduct technical investigations where appropriate.
  • Develop "leading edge" methods and technologies to effectively mitigate undesirable programmatic and operational issues or deficiencies.
  • Provide expert technical guidance and leadership on problem resolution by assessing atypical, unusually complex issues, and situations impacting future roles of the organization and/or program operations (e.g., site policies, major process reengineering, strategic planning, organizational development).
  • Typical assignments are most often broad, and program oriented in nature; assignments require extended periods of time often involving several months to years, although smaller and less complex issues are handled and occasionally require less time.
  • Provide expert leadership of multi-disciplinary team(s) engaged in highly visible/business sensitive, project-type work involving extremely complex problems, and/or key budget, schedule, or regulatory compliance issues, for example. May involve engaging consultants and other outside experts.
  • Define scope of new project-type work and changing technical program requirements.
  • Providing Commercial Grade Dedication (CGD) subject matter expertise to supportthe SRPPF Project Team in qualifying applicable Safety Class/Safety Significant(SC/SS) structures, systems, and components (SSCs).• Support shall also include CGD plan development and review, technical adviceregarding SSC qualification decisions, and participation in project meetings
  • Work independently to ensure adherence to technical policies and guidelines; consult with cognizant management and staff on corrective action plans.
  • Represent assigned organization and technical issues to both internal and external customers; manage related correspondence. Interact with DOE-SR, DOE-HQ, and other external organizations on substantive matters involving assigned technical issues.
  • Interact with oversight panels and boards as appropriate in areas of technical expertise.
  • Propose strategic business goals and milestones involving technical issues for which incumbent has expertise, and against which organizational and operational performance will be measured; participate in related strategic initiatives.
  • Develop strategic plans for major new program areas and for resolving technical issues.
  • Remain intellectually current of job-related emerging technologies, and serve as communications source for advanced technical theories, principles, and concepts.
  • Manage special projects involving multiple divisions, departments, or other organizations.Utilize self-initiative and delegated authority to draw on the required resources and expertise to solve complex organizational and programmatic problems within the framework of a team environment with limited direction.
  • Provide input and participate in programmatic improvement initiatives in support of mission goals.
  • Provide technical and operational input on such items as Authorization Bases Documents, technical reports, and program-level procedures. Also, provide technical input to Training, Procedures, and other such support organizations, as appropriate.
  • Safety is a primary responsibility in each job performed.
  • Obtain safety training, obey safety rules. and make safety an integral part of each task.
  • Take the necessary steps to stop work if continuing the job is unsafe or will create an unsafe condition.

Education and Licensure

  • Bachelor's degree in a physical science (e.g., chemistry, physics, biology) or engineering (chemical, nuclear, electrical, mechanical) field with 15 to 20 years’ experience preferably in nuclear related assignments, including direct operations management; some assignments in this job family require a major in statistics, math, or computer sciences, along with substantial practical experience.
  • An advanced degree, to the Master's or PhD/Doctorate level is preferable and would proportionally reduce the years of experience required.

Skills, Experience and Qualifications

REQUIRED SKILLS, EXPERIENCE AND QUALIFICATIONS:

  • At least 15 Years of relevant experience or equivalent combination of education and experience. (required)
  • Due to federal contract security requirements, this position requires U.S. Citizenship. (required)
  • Advanced knowledge of such subjects as analytical chemistry, radiochemistry, non-destructive examination techniques, reactor physics, statistics, or plant operations

  • Due to federal contract security requirements, candidates must be able to successfully pass a federal background investigation to secure and maintain DOE Q security clearance. (required)
  • Health & Safety training, medical monitoring, and client-driven drug and background testing. (required)

 

PREFERRED QUALIFICATIONS & LOCATION DETAILS:

  • Extensive hands-on experience with computers and various types of software, a knowledge of the administrative systems, and previous assignments in facility operations and maintenance, engineering, or business-type functions, such as finance, operational and/or program/project planning/scheduling, information resources, or procurement operations.
  • Substantive management experience in these or related fields.
  • M-T 6:00am-4:30pm (This is a PART-TIME position)

Please note that federal contractors are required to maintain a drug-free workplace. Regardless of state laws permitting medical or recreational marijuana use, employees working under federal contracts may be subject to federal requirements that prohibit marijuana use.

Skills

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