Senior Mechanical Engineer

Overview

Therma, a Legence Company
. For over 50 years, Therma has redefined the mechanical construction landscapes in California. We are known for outstanding client service and attention to detail, balancing innovative, facility-specific solutions with a pragmatic, cost-conscious approach. The firm employs more than 1,100 people in 3 regional offices, serving clients across sectors including Biopharmaceutical, Education, Healthcare, Food & Beverage, Commercial, Industrial and Data Center facilities.

Our culture is open, innovative, collaborative, and fun, reflected in Therma being recognized as a #1 Best Place to Work on multiple occasions. We empower and challenge employees to succeed.

Location and role
:
San Jose, CA (on site), Full-time

Therma, a Legence company, is seeking a highly motivated Senior Mechanical Engineer with +8 years of experience in the HVAC industry. The ideal candidate is a proactive leader who excels in mentoring engineers, overseeing projects, and engaging directly with clients to deliver high-quality solutions. This role encompasses every phase of the design-build project process, from initial design to construction administration support.

As a member of our engineering team, you will oversee the entire design process—from conceptualization to the finalization of detailed design and construction documents—and coordinate efforts across multiple disciplines to support efficient, timely project progress in a fast-paced environment.

• Bespoke building mechanical and plumbing system designs
• Design heating, cooling, and ventilation load calculations
• Conduct design reviews and provide feedback to engineers, project managers, and project executives to improve product quality, efficiency and performance
• Oversee and manage multiple projects, ensuring timely delivery, quality assurance, and budget adherence
• Interface with clients, architects, and project stakeholders to develop innovative and sustainable mechanical designs
• Generate, review and approve technical drawings, submittals, and specifications as required to ensure compliance with project goals
• Evaluate project submittals, shop drawings, and RFIs to determine conformance with contract documents and design requirements
• Research and analyze customer project requirements, specifications, and data to assess feasibility, program application, and maintenance requirements
• Collaborate with cross-functional teams to resolve problems, implement solutions, and optimize project outcomes
• Stay updated on industry trends and advancements in mechanical engineering and energy-efficient building solutions
• Provide technical guidance and professional development support to the team

• Bachelor’s degree in Mechanical Engineering (or related field)
• Minimum 8 years of engineering experience as a Mechanical Engineer, preferably in the HVAC design-build environment
• Licensed Professional Engineer (PE) in the state of California and MEOR Responsibilities as required
• Proficiency in AutoCAD, Revit and Bluebeam
• Expert knowledge of California Building Code, Title 24
• Expert knowledge of ASHRAE guideline(s) 62.1, 55, 90.1
• Expertise in HVAC systems, cooling and heating plants, and MEP design
• Document Technical Review & Quality Control
• Expertise in Project Coordination and Project Management
• Experience in client relations and relationship management
• Positive attitude, team player, commitment to achieving a common goal
• Engineering Team Development, Mentoring, and Leadership
• LEED Certification (preferred)
• Knowledge of HVAC BAS/Controls
• Expertise in System Basis of Design (BOD) and Sequence of Operation (SOO) development

We are unable to provide immigration sponsorship for this position.

Legence (Nasdaq: LGN) is a leading provider of engineering, consulting, installation, and maintenance services for mission-critical systems in buildings. The company specializes in designing, fabricating, and installing complex HVAC, process piping, and other mechanical, electrical, and plumbing (MEP) systems—enhancing energy efficiency, reliability, and sustainability in new and existing facilities. Legence also delivers long-term performance through strategic…