Senior Mechanical Engineer

Mott MacDonald; Los Angeles (CA); Hybrid; USD 126,000 - 154,000; Full time

Benefits offered by this job

401k

Medical insurance

Dental insurance

Vision insurance

Paid holidays

PTO

Parental leave

Life insurance

Job summary

A leading engineering firm in Los Angeles is seeking a HVAC/Tunnel Ventilation & Fire Life Safety Engineer to enhance their Tunnels and Building Sciences Group. This role requires a Bachelor's degree in Mechanical or Mining Engineering alongside extensive experience in HVAC and fire protection design. The ideal candidate is expected to manage design projects while leading junior engineers and ensuring compliance with fire safety standards. Competitive salary and comprehensive benefits are provided, with a hybrid work model fostering collaboration.

Qualifications

• 10+ years of experience in HVAC/tunnel ventilation design and fire protection design.
• Familiarity with fire life safety codes and standards (NFPA, AMCA, ASHRAE).
• Ability to travel to clients and job sites.

Responsibilities

• Design mechanical systems and prepare design drawings.
• Lead tasks and supervise junior engineers.
• Support or lead proposal development.

Skills

HVAC design

Tunnel ventilation

Fire protection design

Revit

Trace 700

HAP

Pipeflo software

Project management

Communication skills

Self-motivated

Education

Bachelor's degree in Mechanical or Mining Engineering

PE License in Mechanical and Fire Protection

Master’s Degree

Tools

Ventilation equipment

Building Codes knowledge

Job description

Position Overview

At Mott MacDonald, we trust our brilliant people to do brilliant things in engineering, management, and development services, supporting multisector project work in over 150 countries. As one of the largest employee‑owned companies in the world, we pride ourselves on our ability to deliver exceptional outcomes through our network of 20,000+ talented consultants. With sustainability and innovation at the heart of all our sectors in North America, including Buildings, Energy, Transportation, and Water.

We believe in empowering our people to excel, learn, and grow, offering diverse opportunities to contribute to career‑defining work. Join us and be part of a collaborative environment where your ambitions are united with ours, and you can truly shape your story.

If you share that vision, even if you don’t meet every requirement listed, we’d still love to hear from you. We value potential and diverse perspectives as much as experience. Let’s explore how we can support your growth and help you take the next step in your career, while contributing to an exciting new chapter for Mott MacDonald in North America.

Mott MacDonald is actively seeking a HVAC/Tunnel Ventilation & Fire Life Safety Engineer for immediate employment in our Los Angeles office to work in the Tunnels and Building Sciences Group. This position will afford an opportunity to work within a specialized group of professionals in the assessment and development of conceptual, preliminary and detailed designs for major road and rail transportation projects and related underground or enclosed structures and overbuilds. The position provides great potential for professional advancement and in‑house training.

Responsibilities

• Designing mechanical (HVAC, Plumbing and Fire Protection) systems using engineering calculations and preparing design drawings and specifications under the direction of senior engineers or project managers
• Perform studies, evaluations and preliminary design
• Prepare contract documents including drawings, specifications and calculations
• Lead tasks and supervise junior engineers within larger scale projects
• Ensuring accuracy of design and contract documents
• Innovative mechanical design and analysis
• Design services during construction – submittal and RFI review
• Support or lead proposal development
• Some project management

Minimum Requirements

• Bachelor's degree in Mechanical, Mining, or equivalent engineering degree from an Accredited four‑year college or university.
• PE License in Mechanical and Fire Protection
• 10+ years of experience in HVAC/tunnel ventilation design and fire protection design
• Knowledge of Revit, Trace 700, HAP, Pipeflo software
• Experience with ventilation equipment installations
• Familiarity with fans, controls, and fire life safety codes and standards (NFPA, AMCA, ASHRAE) with emphasis on NFPA 130 and NFPA 502
• Working knowledge of Building Codes and NFPA standards
• Good verbal and written communication skills and knowledge of common office software
• Self‑motivated and experienced in performing calculations and delivering quality work
• Demonstrated abilities to work within project timeframes and budget constraints
• Ability to travel to clients and job sites and be willing to attend meetings after regular business hours – some travel may be required.

Preferred Qualifications

• Master’s Degree
• Familiarity with mechanical, fire protection, and egress assessment
• Familiarity with Fire Life Safety mechanical equipment inspection, testing and implementation
• Experience with Design‑Build pursuit or Design‑Build Plans and Specifications production

Benefits & Reward

At Mott MacDonald, our employees have a stake and a voice in our business, providing them with a direct connection to our success through our personal and group performance bonuses. We provide a comprehensive benefit package that includes 401k, medical, dental and vision insurance, short‑term/long‑term disability, paid holidays, PTO, parental leave, and company‑paid life insurance.

Individual pay is determined based on several factors such as work location, education, experience, and unique skills.

The expected salary for this position is $126,000 - $154,000.

Collaboration at Our Core

At Mott MacDonald, we believe great ideas happen when we’re together. Our hybrid approach centers on an in‑office culture, with most of your time spent collaborating face‑to‑face and a minimum of three days per week in the office. We balance flexibility with connection, so you and your manager can choose how to meet client, team, and personal commitments.

Equal Opportunity

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, age, protected veteran status, creed, marital status, sexual orientation, gender identity, citizenship status or disability status.

Job Details

Location(s): Los Angeles, CA, US

Contract Type: Regular (US only)

Work Pattern: Full Time

Market: Buildings

Discipline: Building services

Job Ref: 13471

Recruiter Contact: Heather Yawger