Principal Piping Designer

Company: Longenecker & Associates
Location: Greenville
Posted on: February 21, 2026

Job Description:

Job Description Job Description OVERVIEW Longenecker & Associates (L&A) seeks a motivated Principal Piping Designer to contribute to our mission supporting our work in Greenville, South Carolina. L&A is a woman-owned small business and 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. L&A is unconditionally committed to mission success and the well-being of employees, the nation and the environment. Our team members are passionate about building a healthier environment for generations to come. We are a community that interfaces and effectively communicates with all levels of management and government. If you have a passion for excellence, seek opportunities to engage in mission critical work, and consistently exceed expectations, apply now to join our professional family. POSITION DESCRIPTION The main duties include, but are not limited to: · The purpose of this position is to provide essential technical knowledge and perform design work as described below. This position serves as an Area Lead Designer or staff designer performing assignments of advanced complexity, · Under general supervision of the Discipline Lead Engineer or Design Supervisor, serve as an Area Lead Designer providing guidance/supervision to designers, · Prepare and check designs of advanced complexity utilizing 3D modeling and 2D computer- aided drafting and design (CADD) automation tools, · Coordinate technical issues with other disciplines, project management, vendors and clients, · Execute work in compliance with Project Quality Plan and procedures, · Execute work in accordance with the approved project scope, cost and schedule baselines, · Perform bulk material take-off analysis and tabulations, · Provide technical support to activities associated with equipment and material procurement and subcontracting including review of vendor submittals, · Provide technical support to activities associated with construction administration including response to construction requests-for-information and field changes, · Other duties as assigned. EDUCATION REQUIREMENTS · Associate degree in related technical field of study and minimum fifteen (15) years of work- related experience, · Experience acceptable in lieu of specific degrees, · Desired additional education. MINIMUM QUALIFICATIONS · Working knowledge of applicable federal (including Department of Energy orders), state, and local codes and standards, · Ability to communicate effectively with audiences that include but are not limited to project management, coworkers, clients, vendors, and subcontractors, · Job related technical knowledge necessary to complete the job, · Advanced knowledge of discipline codes and standards, · Ability to perform work in compliance with applicable local, state, and federal codes, statutes and guidelines, · Ability to attend to detail and work in a time-conscious and time-effective manner, · Intermediate computer and software skills to include proficiency in the use of word processing, e-mail, spreadsheet and electronic presentation programs, · Significant experience providing engineering, procurement and construction (EPC) services on large industrial projects, · Proficiency executing large engineering projects utilizing 3D modeling and 2D CADD automation tools in a multi-discipline environment, · Read, interpret, and generate design drawings with minimal input from a member of the engineering staff, · Prepare 3D layouts and/or schematics for conceptual and detailed designs of advanced complexity, · Background and experience must include drafting/designer experience in engineering fields, such as piping, electrical, mechanical, structural, communications, architectural, fire protection or civil, · Proficiency in computer aided design utilizing Bentley MicroStation with demonstrated experience to originate and produce drawings with minimum supervision required, · Proficiency in 3D modeling using Intergraph Smart3D (S3D) with minimum 3 years of experience, · Produce and check complex piping drawings including plot plans, piping plans, isometrics and sketches, · Provide assistance to construction and pipe fabrication personnel, · U.S. Citizenship required, · Ability to work in a diverse work environment, · Satisfactory results of a pre-employment screening, which includes a background check and drug screening in accordance with Federal requirements (details below), · Ability to fulfill and promote L&A core values. DESIRED QUALIFICATIONS · Previous experience on DOE sites and programs, · Experience with design of systems, structures and components for nuclear facilities under the requirements of ASME NQA-1, · Knowledge of commercial availability and cost of materials, · Practical field experience, · EPC project experience for the following industries: · U.S Department of Energy or other U.S. Federal Government Agency, · Nuclear facilities under a nuclear quality assurance program, · Manufacturing, pharmaceutical or biotechnology, · Knowledge of piping components, commercial availability and cost of materials, · Working knowledge of and ability to interpret Piping and Instrumentation Diagram (P&ID), other discipline drawings and vendor equipment documentation, · Advanced knowledge of: · Intergraph SmartPlant Review software, · Piping design requirements (equipment arrangement, piping layout, stress requirements, and material requirements), · Working knowledge of and ability to interpret Piping and Instrumentation Diagram (P&ID), update master P&ID and pipe line list. LOCATION · Greenville, South Carolina PHYSICAL REQUIREMENTS AND WORKING CONDITIONS Successful candidates will be able to perform the essential functions of the job with reasonable accommodation. This job posting reflects management’s assignment of essential functions and the descriptions listed do not restrict management’s right to assign or reassign duties and responsibilities to this job at any time. PRE-EMPLOYMENT SCREENING Please note that marijuana remains a Schedule I controlled substance under Federal Law. Federal contractors must follow Federal drug-free workplace rules, which prohibit marijuana use, even if medical or recreational use is permitted under State Law. SALARY AND BENEFITS As an L&A employee, you will be eligible for a competitive salary as well as a comprehensive benefits package including healthcare (medical and dental), 401K plan, and paid time off. We believe in investing in our employees beyond compensation and as an L&A employee, you will have access to in-house training, career pathing, mentoring, award programs, tuition reimbursement and much more. L&A is an Equal Opportunity Employer and all qualified applicants will receive consideration for employment regardless of their race, color, religion, sex, sexual orientation, gender identity, national origin, age, or status as a qualified individual with a disability or protected veteran.

Keywords: Longenecker & Associates, Spartanburg , Principal Piping Designer, Engineering , Greenville, South Carolina