Senior Mechanical Design Engineer

About Us QISG leverages Quanta’s comprehensive resources to deliver collaborative solutions for our partners' energy infrastructure needs. We use in-house talent, expertise and resources to plan, design, engineer, manage, conduct maintenance on and construct projects. Our turnkey service capabilities provide our customers with efficiency, consistency, attention to detail and safe execution. The QISG team brings together Engineering, Safety, Quality, Material Procurement, QA/QC, Right-of-Way Acquisition, Scheduling, Environmental Planning, Permitting, Title and Land Management expertise that ensure outstanding results for our clients. About this Role DSI, Dynamic System a Quanta company, is looking for a Senior Mechanical Design Engineer to lead the design and engineering of HVAC plumbing, and piping systems across new construction, design-build, and renovation projects. Acts as the senior technical resource on assigned projects, guiding design decisions from concept through construction administration, fabrication, and commissioning. Mentors less experienced engineers on the team. What You'll Do Develop conceptual and detailed system designs for assigned projects, from early concept through final construction documents Represent engineering at project design coordination meetings as the senior technical lead Produce advanced preliminary design layouts and redlines to support estimating and proposal efforts Perform advanced engineering calculations, including heating/cooling load analysis, equipment sizing and selection, friction loss, and hydraulic calculations Coordinate with fabrication shop (“design for fabrication”) to incorporate modular concepts into the design Conduct site visits and field inspections to verify compliance with construction documents and resolve design issues that arise during construction Provide technical oversight and mentorship to less-experienced engineers and designers on HVAC, plumbing, and piping system design and documentation Support proposal development and budgetary/technical scoping for pursuits What You'll Bring Bachelor's degree in Mechanical Engineering or related field Professional Engineer (PE) license required 8+ years of mechanical design experience, including experience leading design efforts Strong working knowledge of HVAC, plumbing, and piping, plus a solid understanding of overall building system operations Ability to read and interpret complex mechanical and plumbing construction documents Excellent verbal and written communication skills, with the ability to work effectively across all levels of staff, clients, and general contractors Strong presentation and public-speaking skills Proficiency with CAD/BIM tools and Microsoft Office (including Excel) Preferred Qualifications: Design-build or mechanical contractor project delivery experience Experience with Revit MEP and BIM coordination workflows LEED or CEM credential What You'll Get Competitive base salary commensurate with experience 401(k) plan with company match Comprehensive medical, dental, and vision coverage Paid holidays, vacation, and personal time Training, professional development, and support for licensure/professional association dues Performance-based bonus opportunity Equal Opportunity Employer All qualified applicants will receive consideration for employment and will not be discriminated against on the basis of race, color, religion, national origin or ancestry, sex (including gender, pregnancy, sexual orientation, and/or gender identity), age, disability, genetic information, veteran status, and/or any other basis protected by applicable federal, state or local law.We are an Equal Opportunity Employer, including disability and protected veteran status. We prohibit all types of discrimination and are committed to providing access and equal opportunity for individuals with disabilities. For additional information or if reasonable accommodation is needed to participate in the job application, interview, or hiring processes or to perform the essential functions of a position, please contact us the Company’s Human Resources department.