Senior Mechanical Engineer

JFE Engineering is seeking a licensed Senior Mechanical Engineer to lead HVAC/mechanical design for industrial facilities and data centers. This role serves as a technical leader and may serve as Engineer of Record for mechanical scope and sign/seal project documents in accordance with applicable state laws and responsible charge requirements. The role also supports proposals, client presentations, and business development/marketing activities. Key Responsibilities： Engineering Lead HVAC/mechanical system design from concept through permit and construction documents. Develop and/or oversee load calculations, equipment selection, duct/piping design, and controls sequences. Produce and review drawings/specifications. Coordinate with Electrical, Plumbing, Architectural, Structural, Civil, and process/vendor teams. Coordinate fire and life safety integration with mechanical systems, including smoke control concepts, fire/smoke damper requirements, equipment shutdown sequences, and other code-required HVAC interfaces. Support permitting: respond to AHJ comments, revise plans, and attend plan check meetings as needed. Provide construction administration: RFIs, submittals, site walks, punch lists, closeout support. Sealing/Stamping Serve as Engineer of Record for mechanical scope and sign/seal project documents in accordance with applicable state laws, licensing board rules, and responsible charge requirements. Proposals & Marketing/BDSupport RFP/RFQ responses: narratives, approach, scope support, schedules, level-of-effort estimates. Participate in client meetings, technical presentations, and project pursuit activities. Help develop qualifications packages, case studies, and technical content for marketing.