Mechanical Engineer 3 - Energy & Utility

About M.C. Dean M.C. Dean is Building Intelligence. We design, build, operate, and maintain cyber-physical solutions for the nation’s most mission‑critical facilities, secure environments, complex infrastructure, and global enterprises. With over 7,000 employees, our capabilities span electrical, electronic security, telecommunications, life safety, automation and controls, audiovisual, and IT systems. Headquarters in Tysons, Virginia, M.C. Dean delivers resilient, secure, and innovative power and technology solutions through engineering expertise and smart systems integration. Why Join Us? Our people are passionate about engineering innovation that improves lives and drives impactful change. Guided by our core values—agility, expertise, and trust—we foster a collaborative and forward‑thinking work environment. At M.C. Dean, we are committed to building the next generation of technical leaders in electrical, engineering, and cybersecurity industries. Position Description In this role of Mechanical Engineer 3 – Energy and Utility , as part of a multidisciplinary engineering and construction team, you will develop and integrate behind‑the‑meter and grid‑connected natural gas‑fired generation systems and associated infrastructure for mission‑critical and industrial facilities. This role supports the delivery of integrated energy systems, bridging power generation, fuel infrastructure, and mission‑critical facility requirements. Documents include drawings, specifications, product selection, installation sequence planning, and commissioning testing/commissioning scripts. Responsibilities Maintain design standards, specifications, and criteria for projects, including power generation systems such as RICE, combustion turbines, and combined cycle systems Fuel gas – pressure regulation, gas conditioning, metering and custody transfer Cooling systems – air and water cooled, heat exchangers Piping systems – high pressure gas, steam, and condensate Auxiliary systems including fire protection, compressed air, drain, and vent Define and support implementation of mechanical system inputs to plant control systems, including startup/shutdown sequencing, trip logic, interlocks, and integration with PLC/DCS‑based control architectures Lead and coordinate natural gas utility interconnections, including pipeline tie‑ins, pressure class evaluation, redundancy strategies, and coordination with interstate and intrastate gas providers Design and evaluate thermal rejection systems, including cooling towers, air‑cooled condensers, and water treatment systems, with consideration for site constraints and sustainability requirements Support environmental permitting efforts, including air emissions, thermal discharge, and noise considerations, in coordination with environmental consultants and regulatory agencies Coordinate with electrical engineering teams to align mechanical system performance (ramp rates, startup times, thermal constraints) with grid interconnection and dispatch requirements Support construction and commissioning activities, including equipment setting and alignment, piping system QA/QC, system turnover, flushing and cleaning procedures, and performance testing of generation systems Represent the Company in interactions with customers, contractors, suppliers, and collaborate with other project team members Perform site survey, calculations, evaluations, equipment selection, equipment specification, system design, and system layout for project proposal and contract execution Thermal modeling and cycle analysis Develop sustainable designs for high performance systems for power generation, including RICE and combustion turbines, combined cycle systems, and balance of plant to support generation Produce construction contract drawings and specifications consistent with contract requirements and applicable industry codes and standards Address mechanical design, fabrication, construction, and commissioning issues Develop system sequence of operations, compliance matrices and other project support documentation Provide support for construction activities, including responses to requests for information, review of project equipment submittals, and technical support of operations management Assist in mentoring entry‑level engineers, assign and manage tasks for them, and assist Project Lead Engineers in managing project support and deliverables Perform quality control checks of work product you provide and of those provided by others Travel to project jobsites as required, with possibility of temporary relocation to the project site Actively participate in design and owner/architect/contractor meetings as necessary Determine or assist in determining project engineering scopes of work, deadlines, and budget, completing support within agreed deadlines and budget Keep senior staff informed of important and relevant service/design decisions and ensure the objectives of the company and the client are achieved Coordinate work with other members of the project team and inform all relevant M.C. Dean staff of client matters Commit to self‑learning and professional development Manage your time effectively and support multiple projects concurrently Required Education, Experience, & Skills Bachelor’s Degree in Engineering required; Mechanical Engineering preferred or equivalent engineering degree 5+ years of relevant experience in design or commissioning of energy, utility, or building power systems Familiarity with essential responsibilities and activities Preference for having passed the Fundamentals of Engineering test Excellent oral and written communication, interpersonal, problem‑solving and analytical skills Experience working in a fast‑paced EPC/design‑build environment Reliable transportation to job sites Preferred Experience & Skills Professional Engineers License Proficiency with the latest version of AutoCAD, Revit, and BIM experience Certified Energy Manager (CEM) Design Build Institute of America (DBIA) Distributed Power Generation Professional (DGCP) Abilities Exposure to computer screens for an extended period of time Sitting for extended periods of time Reach by extending hands or arms in any direction Have finger dexterity to manipulate objects with fingers rather than whole hands or arms, e.g., using a keyboard Listen to and understand information and ideas presented through spoken words and sentences Communicate information and ideas in speaking so others will understand Read and understand information and ideas presented in writing Apply general rules to specific problems to produce answers that make sense Identify and understand the speech of another person #J-18808-Ljbffr M.C. Dean, Inc.