Senior Mechanical Engineer

Legence; San Jose (CA); Hybrid; USD 150,000 - 185,000; Full time

Benefits offered by this job

401(k) Match

Health Insurance

Dental & Vision

Job summary

Therma LLC is seeking a highly motivated Senior Mechanical Engineer with 8+ years in HVAC design-build. You will mentor engineers, oversee multiple projects, and directly engage with clients to deliver high-quality mechanical designs from concept through construction documents.

You will coordinate across disciplines, ensure design quality, and manage submittals and RFIs. CA PE license and LEED knowledge are preferred; immigration sponsorship is not available.

Qualifications

• BS in Mechanical Engineering or related field required.
• Minimum 8 years in mechanical engineering, HVAC emphasis.
• Licensed PE in California; MEOR responsibilities as required.

Responsibilities

• Lead design-build projects from concept to construction documents.
• Mentor engineers and guide project teams; interface with clients.
• Coordinate across MEP disciplines for timely progress.
• Review drawings/submittals and ensure contract conformance.
• Stay current with industry trends and LEED considerations.

Skills

AutoCAD

Revit

Bluebeam

PE license

California Building Code

ASHRAE 62.1/55/90.1

HVAC design-build

MEP design

Leadership/Mentoring

Client engagement

Education

Bachelor’s degree in Mechanical Engineering

Tools

AutoCAD

Revit

Bluebeam

Job description

Posted Tuesday, August 4, 2026 at 10:00 AM

Therma, a Legence company

For over 50 years,Therma has continued to redefine the mechanical construction landscapes in California. Renowned for outstanding client service and attention to detail, we balance innovative, facility-specific solutions with a pragmatic, cost-conscious approach. Today, the firm employs more than 1,100 people in 3 regional offices, and its clients represent a diverse range of market sectors, including Biopharmaceutical, Education, Healthcare, Food & Beverage, Commercial, Industrial and Data Center facilities. Our culture is open, innovative, collaborative, and fun – all reflected in recognition of Therma as a #1 Best Place to Work on multiple occasions. We create an environment that empowers & challenges employees, giving them the greatest opportunity to succeed.

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 an integral member of our engineering team, you will oversee the entire design process - from conceptualization to the finalization of detailed design and construction documents. Additionally, you will coordinate efforts across multiple disciplines - including mechanical, electrical, plumbing, architectural, civil, structural, controls, general construction, and ownership groups – contributing to efficient and timely project progress in a fast-paced environment.

Responsibilities:

• 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
• Providing technical guidance and professional development support to the team

Requirements:

• 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

Salary: $150k-$185k, depending on experience

We are unable to provide immigration sponsorship for this position.
#LI-JS1 #LI-Onsite

About Legence

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 upgrades and holistic solutions. Serving some of the world’s most technically demanding sectors, Legence counts over 60% of the Nasdaq-100 Index among its clients.

Benefits Overview

401(k) Plan with Company Match: Currently match contributions dollar-for-dollar up to 4% of eligible pay; immediate vesting.
Health & Welfare Benefits: Employer provided medical, dental, vision, prescription drug, Employee Assistance Program and accident & illness coverage.
Life and Disability Insurance: Employer provided basic life insurance and AD&D valued at 50K coverage amount with the option for voluntary buy up for additional coverage.
Time Off: Flexible non-accrual vacation (separate from CA sick leave); company holidays per policy.
Expenses: Business travel and related expenses reimbursed per company policy.

Reasonable Accommodations

If you need assistance or accommodations during the application or interview process, please contact us [e-mail] or your dedicated recruiter with the job title and requisition number.

Employment Eligibility

Candidates must have current work authorization in the U.S.; visa sponsorship is not available for this position.

Third-Party Recruiting Disclaimer

Legence and its affiliates do not accept unsolicited resumes from agencies; any such submissions without a prior signed agreement authorized by Legence Holdings LLC's CHRO or Director of Talent Acquisition will not incur fees and are considered property of Legence.

Pay Disclosure & Considerations

Where pay ranges are indicated, please note that a successful candidate’s exact pay will be determined based relevant job -related factors, including any of the following: candidate’s experience, skills, and qualifications, as well as geographic and market considerations. We are committed to ensuring fair and competitive compensation for all employees and comply with all applicable salary transparency laws.

Equal Employment Opportunity Employer

Legence and its affiliate companies are proud to be an equal opportunity workplace. We are committed to equal employment opportunity regardless of race, color, religion, sex (including pregnancy, gender identity, and sexual orientation), marital or familial status, national origin, age, disability, genetic information (including family medical history), political affiliation, military service, other non-merit-based factors, and any other characteristic protected under applicable local, state or federal laws and regulations.
EEO is the Law