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Parsons Corporation Principal Mechanical Engineer in Pasadena, California

In a world of possibilities, pursue one with endless opportunities. Imagine Next!

When it comes to what you want in your career, if you can imagine it, you can do it at Parsons. Imagine a career working with intelligent, diverse people sharing a common quest. Imagine a workplace where you can be yourself. Where you can thrive. Where you can find your next, right now. We’ve got what you’re looking for.

Job Description:


The Principal Mechanical Engineer, you will provide the necessary technical leadership, mentoring and guidance to the mechanical staff in your operating groups. You will ensure total quality of all engineering efforts and assist in appropriate fee development. You will assist the San Antonio Architectural Manager in meeting project delivery goals, manage project manhour efforts and client expectations. You may serve as the Project Engineer when dictated by the project size, complexity or client request.


  • Performs complex engineering tasks and particularly important engineering work efficiently and accurately.

  • Provides design of complex HVAC systems for hospitals, laboratories and other special ventilation and air conditioning projects for data centers, clean rooms, government and commercial buildings.

  • Prepares engineering computations, material quantity takeoffs, estimates, surveys, and designs as needed for HVAC system documentation.

  • Working knowledge of HVAC cooling-heating load analysis software is required.

  • Familiarity with Trane Load Design and Trane Trace is not required but recommended.

  • Must be familiar with the IMC – International Mechanical Code as well as Unified Facilities Criteria (UFC)

  • Familiarity with LEED requirements with a LEED BC&D certification is desired.

  • Working knowledge of ASHRAE 90.1, 62.1, 55, ASHRAE 170 AND SMACNA 006-2006 is desired.

  • Perform industry-standard (ASHRAE or equivalent) energy audits. This will require working independently to develop action plans prior to executing energy audits, properly organizing information gathered, and identification of recommendations.

  • Perform industry-standard energy calculations (such as weather-based BIN calculations and trends analysis).

  • Assist or perform existing building commissioning. Understanding of industry standard commissioning procedures or techniques is preferred. Familiarity with eQuest/DOE-2 and Building Life Cycle Cost (BLCC) software is desired.

  • Read and write sequences of operations, as well as analyzing drawings and specifications to determine facility operational characteristics.

  • Analyze data and building management system programming for performance and energy savings improvements.

  • Provides technical guidance to CAD Designer/Drafters, Designers, and lower-level Engineers working on the same project.

  • May be required to provide the seal and signature of the professional engineer, as appropriate, ensuring compliance with all applicable codes, regulations, and ordinances.

  • May act in an advisory capacity to senior management personnel on engineering related matters.

  • Performs other responsibilities associated with this position as may be appropriate.


  • 4-year degree (or higher) in Mechanical Engineering (or related field) and 10-15 years of related work experience. Professional Engineer registration required.

  • 2+ years of experience in energy efficiency engineering with buildings or industrial applications

  • Certified Energy Manager (CEM) certification is desired but not required


  • Proficiency in utilizing CAD and Microsoft Office software packages associated with engineering is required.

Minimum Clearance Required to Start:

Not Applicable/None

This position is part of our Federal Solutions team.

Our Federal Solutions segment delivers resources to our US government customers that ensure the success of missions around the globe. Our diverse, intelligent employees drive the state of the art as they provide services and solutions in the areas of defense, security, intelligence, infrastructure, and environmental. We promote a culture of excellence and close-knit teams that take pride in delivering, protecting, and sustaining our nation's most critical assets, from Earth to cyberspace. Throughout the company, our people are anticipating what’s next to deliver the solutions our customers need now.

Salary Range:

$96,400.00 - $168,700.00

This position is eligible for incentive compensation.

We value our employees and want our employees to take care of their overall wellbeing, which is why we offer best-in-class benefits such as medical, dental, vision, paid time off, Employee Stock Ownership Plan (ESOP), 401(k), life insurance, flexible work schedules, and holidays to fit your busy lifestyle!

Parsons is an equal opportunity employer committed to diversity, equity, inclusion, and accessibility in the workplace. Diversity is ingrained in who we are, how we do business, and is one of our company’s core values. Parsons equally employs representation at all job levels for minority, female, disabled, protected veteran and LGBTQ+.

We truly invest and care about our employee’s wellbeing and provide endless growth opportunities as the sky is the limit, so aim for the stars! Imagine next and join the Parsons quest—APPLY TODAY!About Us

Parsons is a digitally enabled solutions provider focused on the defense, security, and infrastructure markets. With nearly 75 years of experience, Parsons is uniquely qualified to deliver cyber/converged security, technology-based intellectual property, and other innovative services to federal, regional, and local government agencies, as well as to private industrial customers worldwide.

Parsons is an equal opportunity, drug-free employer committed to diversity in the workplace. Minority/Female/Disabled/Protected Veteran/LGBTQ+.

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