Sr. Mechanical Designer

Sr. Mechanical Designer Engineering Design / Drafting Exeter, New Hampshire Permanent Apr 21, 2026 Job Summary A specialized energy engineering and construction firm is hiring a Senior Mechanical Designer to support industrial power distribution and generation projects. This role is responsible for leading project coordination efforts while performing production design and drafting for combined heat and power plants, district energy systems, municipal-scale power generation facilities, and renewable energy projects. The position requires expertise in industrial process piping and ductwork design, equipment layout, and the development of comprehensive mechanical design documents to support construction and successful project delivery. Responsibilities Utilize AutoCAD 2D and 3D, Revit, Navisworks, and other CAD software to create engineering design drawings for energy-related projects Develop Process & Instrument Diagrams (P&IDs) Produce piping plans, sections, and isometrics Develop ductwork plans, sections, and details Create installation details for pumps, fans, instrumentation, control valves, and related equipment Develop 3D equipment location plans and general arrangement drawings Produce pipe and duct support details Review vendor engineering submittals and incorporate information into project drawings Coordinate with system engineers to ensure hydraulic, pipe stress, thermal expansion, and other design considerations are incorporated Collaborate with internal multi-discipline designers to support successful project delivery Coordinate with external consultants and vendors on design-related topics Conceptualize and assemble complete sets of design documents for construction Provide construction support, including reviewing field conditions and assisting contractors with implementation and troubleshooting Visit project sites as needed to obtain dimensional information and translate findings into design documentation Qualifications

Required:

Associate degree in a related field 7+ years of relevant mechanical design experience Proficiency with AutoCAD Plant 3D and Navisworks Experience developing plan, elevation, section, and detail drawings for equipment and piping Strong written and verbal technical communication skills Strong attention to detail Knowledge of process equipment such as pumps, heat exchangers, control valves, and related systems Knowledge of pipe routing and pipe support design Understanding of piping system fabrication, construction, and installation Understanding of basic construction processes related to equipment and piping installation Authorization to work for any employer in the United States without sponsorship now or in the future Willingness to travel 0-3 weeks per year

Preferred:

Revit experience Experience in the energy industry and/or process systems Knowledge of best practices for layout of power and process plants Experience with 3D equipment location plans and general arrangement drawings Self-starter with strong organizational and coordination skills