Sr HVAC Mechanical Engineer

Overview At SSOE, we design and build the future for our clients, colleagues, and communities. We design places for people to heal, learn, govern, and work. Our clients range from important community institutions to companies in both the private and public sectors—including Fortune US 100 corporations that are leading the nation’s innovation economy. You will be instrumental in the detailed mechanical HVAC engineering design for a diverse array of building projects including transportation hubs, aviation facilities, educational institutions, corporate campuses, healthcare environments, restaurants, and hospitality venues. Your role involves performing precise HVAC load calculations compliant with ASHRAE standards (including ASHRAE 90.1 and ASHRAE 62.1), referencing and applying International Mechanical Code (IMC) requirements, NFPA fire protection standards, and NEC electrical considerations for HVAC systems design. AI and Innovation At SSOE, we don’t just talk about the future, we build it. As a leader in industry AI adoption, we empower our team to work smarter by providing responsible access to the industry leading AI Large Language Models, vibe-coding platforms, and securely integrating advanced tools into every role. From day one, you’ll receive the training and support needed to leverage AI as a core tool for enhancing productivity, sparking creativity, and streamlining complex workflows. Responsibilities Our Mechanical Engineer will employ advanced Revit modeling techniques to develop, coordinate, and validate 3D HVAC systems layouts, ensuring seamless integration of mechanical components with architectural and structural disciplines. Working closely with project managers, discipline leads, and client representatives, you will lead HVAC design reviews and rigorous quality gate checkpoints that support risk mitigation and compliance with safety protocols throughout all design phases. Your responsibilities span schematic design, detailed design development, construction documentation, and construction administration, maintaining stringent change control processes and proactively identifying constructability issues in collaboration with contractors and vendors. Perform detailed heating and cooling load calculations and psychrometric analyses using recognized methodologies to size equipment accurately and optimize energy consumption, adhering to sustainable design principles and energy codes including ASHRAE 90.1. Develop and maintain detailed BIM models in Revit, producing HVAC layouts, ductwork, piping, and equipment placement and interfacing with MEP and structural disciplines to resolve clashes and coordination issues using clash detection tools. Collaborate directly with multi-disciplinary design teams, including electrical, plumbing, controls, process, industrial, and structural engineers, to deliver integrated solutions that align with project schedules, budgets, and client requirements. Provide design input and technical support during all phases—from concept and schematic design, through design development and construction documents, to construction administration and startup phases. Lead or participate in internal design reviews and quality assurance/quality control (QA/QC) processes, ensuring design integrity, code compliance, and risk mitigation for HVAC systems across multi-location office teams and remote collaborators. Mentor junior engineers and coordinate cross-office collaboration to uphold the firm’s culture of continuous improvement and technical excellence. Utilize industry-standard HVAC analysis software and spreadsheet calculation tools, supplementing BIM data for robustness in design validation. Stay current with changes to relevant codes, standards, and emerging best practices in HVAC design, preparing engineers’ design packages accordingly. Qualifications What You Will Bring: Bachelor’s degree in Mechanical Engineering or related. Minimum of nine years’ professional mechanical engineering experience focusing on HVAC design for buildings within transportation, aviation, education (primary and university), corporate, healthcare, hospitality, and restaurant sectors. Thorough knowledge of International Mechanical Code (IMC), NFPA standards for fire and life safety (e.g., NFPA 90A), National Electrical Code (NEC) requirements related to HVAC electrical systems, and ASHRAE standards including 90.1 (energy efficiency) and 62.1 (ventilation). Proficiency in Revit BIM software for HVAC systems modeling, with demonstrated ability to produce and manage 3D design documentation in multi-discipline environments. Proven experience performing load calculations and system selections validated via recognized engineering calculation methods including psychrometric charts and energy modeling correlations. Demonstrated ability to communicate fluently and professionally in English, both written and verbal, including technical correspondence, client interactions, and team collaboration. Experience working within rigorous quality assurance workflows, including design reviews, coordination meetings, and construction administration. Proven ability to mentor engineers and technical staff, fostering knowledge transfer and technical rigor within the team. What We Bring: Superior benefits such as Major and Minor medical expenses insurance, Dental and Visual insurance (Family Plan), Life insurance, 20 Days for Christmas Bonus, Food Coupons and others. We believe in investing in our employees’ professional development and career growth. Our size and growth trajectory allow us to offer opportunities at all stages of your career that many smaller firms struggle to provide. Here’s what you can expect: Career Development Training and Education Ownership Opportunities Innovative Projects Best Technology in Design Additional Perks Offered: Hybrid Work Model, flexibility to work from home, allowing for a better work-life balance. Available after introductory period. A collaborative and supportive culture, where you will be encouraged to bring new ideas and interact with our people in Mexico, US and India. As part of a multidisciplinary team, you will experience exciting projects from start to finish and interface directly with some of the most forward-thinking clients in the world. Exposure to state-of-the-art technology will provide you with valuable skills and knowledge, enhancing your professional growth. SSOE Employees Clubs. Participation in various type of activities to foster a sense of community: volunteering, family and holiday events, Diversity, Equity, and Inclusion programs. Recognition and Rewards, the company values its employees’ contributions and regularly recognizes and rewards their hard work through attractive incentives. SSOE – The Best of Both Worlds SSOE provides a supportive and dynamic work environment where employees can thrive both personally and professionally, combining the expertise and viewpoints from our discipline leaders to more innovative and well-rounded solutions, supported by the best technology for the task at hand. You will have regular interaction with an international team, that fosters better communication skills and understanding of different cultures, which is crucial for effective communication. Once you experience the SSOE difference, you’ll understand the why behind our metrics: 28% - of our employees have been with SSOE for 10 years or more. 15% - percentage of employees with tenure exceeding 15 years. 99% - our CEO’s approval rating on Glassdoor. 98% - portion of our clients who say they would recommend us to a colleague.