Collaborative Design. Technical Excellence. Community Impact. Are you a senior mechanical building services professional who loves solving the puzzle of complex MEP systems and leading projects from start to finish? Thompson & Litton is seeking a self-motivated Senior Mechanical Engineer - Building Services to join our multidisciplinary team. Whether you are driving high-efficiency HVAC load strategy, overseeing life safety fire protection design, or mentoring the next generation of engineers, you'll play a key role in delivering complete building services solutions across commercial, industrial, and institutional projects.

The Role:

From Concept to Completion As a senior member of our Building Services engineering team, you will lead the full scope of design and project delivery for commercial, industrial, and institutional projects.

You will:

Design and Lead:

Drive the production of comprehensive mechanical building services packages, including advanced HVAC, plumbing, and fire protection plans.

Analyze and Optimize:

Oversee critical calculations for HVAC loads, energy usage, and life-cycle costs to deliver sustainable, high-performance building solutions. Collaborate in the

Field:

Lead site visits for renovations and additions, gathering the 'ground-truth' data needed for seamless building systems integration.

Guide Project Delivery:

Author and review technical specifications, engineering reports, and building system condition assessments.

Support Construction & Quality:

Direct construction-phase administration, managing RFIs, submittal reviews, and field assessments for mechanical systems while ensuring high-quality execution.

Mentor & Guide:

Share expertise with junior and mid-level engineering staff to support their technical growth and career development.

What You Bring Experience:

6+ years of progressive experience in building services design (specifically HVAC, Plumbing, and Fire Protection) within commercial, industrial, or institutional sectors.

Licensure & Education:

Active Professional Engineer (PE) license in state of practice required (or ability to obtain via reciprocity within 6 months of hire).

Technical Software:

Proficiency in—or demonstrated leadership using—AutoCAD, Revit, and HAP (Carrier) or equivalent building performance simulation software.

Technical Knowledge:

Deep working knowledge of mechanical and building codes and standards (including ICC, ASHRAE, and NFPA).

Project Leadership:

A proven track record of delivering complex building services projects on time and on budget while serving as a key liaison for clients and multidisciplinary teams. The T&L Advantage Employee-Owned (ESOP): Because T&L is 100% employee-owned, you aren't just an employee—you are a stakeholder. You'll directly benefit from the firm's growth, stability, and collective success.

Professional Development:

We invest heavily in your career longevity. Whether it's pursuing specialized leadership tracks, attending industry conferences, or earning advanced credentials, we provide the resources to help you grow.

Flexible Work Environment:

We work where the work needs us—in the office, from home, in the field, and in the community. We offer flexible scheduling options to support work-life balance.

Mentorship Culture:

We value leaders who enjoy elevating others. At T&L, your guidance of junior staff is as vital to our culture as your technical excellence.

Broad Project Scope:

From K-12 schools and higher education facilities to industrial plants, you will lead and contribute to a diverse project portfolio. If you're ready to take the next step in your career and join an award-winning, employee-owned team, we want to hear from you!