Principal Mechanical Engineer

HVAC Principal Design EngineerOmega Technical Services is seeking a highly motivated HVAC Principal Design Engineer to support ongoing operations in Greenville, SC. This position plays a vital role in advancing critical mission objectives within a highly regulated and technically demanding environment.As a trusted partner to government agencies and national laboratories, Omega Technical Services supports some of the nation's most complex and high-impact programs. Through these strategic collaborations, Omega contributes directly to the strength, security, and sustainability of the U.S. Nuclear Security Enterprise.ResponsibilitiesProvide the essential administrative processes, technical knowledge and leadership as described below. This position has oversight of a specific project area and acts as a representative of the engineering discipline ensuring technical accuracy in project execution in all phases.Under general supervision of the Discipline Lead Engineer, serve as a Supervising Lead providing guidance / supervision to other engineers and designers.Analyze and make independent recommendations regarding technical solutions to problems of advanced complexity in accordance with project requirements.Develop and review specifications and design criteriaPerform and check engineering analyses and calculations; specify materials, equipment, and systems; and solve technical problems of advanced complexity.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.Develop and review estimates, schedules and progress reports including effort-hour estimating and staff forecasting.Establish, control, and report on material key quantities; provide analysis and forecasts.Provide technical support to activities associated with equipment and material procurement and subcontracting including scopes of work, technical bid evaluations, and 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.Development of HVAC load calculations.Development of HVAC air flow diagrams and instrument diagrams.Development of HVAC system sequence of operation narratives.Sizing and specification of air handling units and other equipment.HVAC main duct and distribution duct sizing and routing.Development of black utility (chiller, boiler, custom Air Handling Unit (AHU), air compressor and cooling tower) specifications based upon sizing data provided by Process.Development of HVAC specifications.Education RequirementsBachelor of Science degree in Mechanical Engineering and minimum fifteen (15) years of work-related experience.QualificationsCandidate must be a U.S. Citizen.Satisfactory results of a pre-employment screening, which includes a drug and breath alcohol test, along with a Motor Vehicle Record check.Candidate must be able to obtain and maintain a DOE Security Clearance.Working knowledge of applicable federal (including Department of Energy orders), state, and local codes and standardsAbility 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 EPC projects utilizing engineering analysis, 3D modeling and 2D Computer-Aided Drafting and Design (CADD) automation tools in a multi-discipline environment.Advanced engineering knowledge in the design of Heating, Ventilation and Air-Conditioning (HVAC) systems.Preferred QualificationsPossession of an active DOE/DoD clearance within the past two (2) years is preferred.Previous DOE/NNSA work experience.Professional Engineer licenseExperience with design of systems, structures and components for nuclear facilities under the requirements of American Society of Mechanical Engineers (ASME) NQA-1.Advanced knowledge of commercial availability and cost of materials.Demonstrated experience managing and leading large projects.Proficiency with project set-up, development of control-level schedules, progress reporting and project close-out.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.Work ScheduleShift will be dependent upon customer site discretion.Why Omega Technical Services?Omega Technical Services is a Service-Disabled Veteran-Owned Small Business and a trusted partner to the Department of Energy, Department of Defense, and other commercial clients, supporting mission-critical projects that shape national security and technological innovation. Our culture is defined by leadership, initiative, and trust. Our values drive meaningful outcomes and long-term impact.At Omega Technical Services, you'll work alongside elite subject matter experts who thrive on being challenged, innovation, and collaboration. We offer competitive pay, comprehensive benefits, and the opportunity to grow your career in a mission-first, people-focused environment.When you join Omega Technical Services, you're not just starting a job, you're building a career that honors the past, powers today's progress, and accelerates the most vital missions of tomorrow.Equal Employment Opportunity StatementOmega Technical Services is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment regardless of race, color, religion, sex, national origin, age, disability, or veteran status.