Senior Mechanical Engineering-Design

RFS Engineering is now a Salas O'Brien company
Senior Mechanical Engineer (Hybrid)
Job Summary: The Senior Mechanical Engineer leads the design, coordination, and delivery of complex building HVAC and thermal energy systems. This role provides technical leadership across heating, cooling, ventilation, and control systems while managing multidisciplinary design teams and working directly with clients. Candidates with extensive HVAC systems design experience or deep expertise in building energy modeling and life-cycle cost analysis are encouraged to apply.
Lead the design and delivery of complex HVAC and thermal energy systems across all project phases
Provide technical leadership, mentorship, and quality oversight to mechanical design teams
Design and coordinate thermal energy generation and distribution systems, including hot water, steam, chilled water, geothermal wellfields, water-source and air-source heat pumps
Perform and oversee engineering calculations to determine HVAC system loads using IESVE or similar tools
Design HVAC systems including air handling, energy recovery, precision temperature and humidity control, and radiant heating and cooling
Develop building automation and control strategies to support performance, efficiency, and occupant comfort
Prepare mechanical master plans and support long-term infrastructure planning
Collaborate with architects, owners, utilities, and contractors to resolve technical challenges
Bachelor of Science in Mechanical Engineering (BSME) required
Ideally minimum of 10 years of experience designing and leading design teams for building HVAC systems
Demonstrated experience with complex HVAC and thermal energy systems (required)
Proficiency with IESVE or similar HVAC system load calculation software required
Proven ability to manage multiple projects, priorities, and stakeholders
Travel : Up to 20%
This role is also eligible for performance-based bonuses and a comprehensive U.Medical, dental, and vision insurance

• Paid time off and company holidays
• Founded in 1975, Salas O'Brien is an employee-owned engineering and professional services firm focused on achieving impact for our clients, our team, and the world. We work across a variety of industries providing integrated engineering and consulting services. Our specialized experience includes design for data centers, healthcare, science and technology, high-rise buildings, clean energy, education, and other building types as well as structural and building sciences, infrastructure asset management, advanced robotics, and more.

Salas O'Brien provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, colour, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state/provincial, or local laws. Salas O'Brien will accommodate the disability-related needs of applicants as required by law.
Equal Opportunity Employer/Protected Veterans/Individuals with Disabilities