Senior Mechanical Engineer

Thompson & Litton Inc; Bristol (TN); Hybrid; USD 110,000 - 150,000; Full time

Benefits offered by this job

ESOP

Job summary

Thompson & Litton Inc. seeks a Senior Mechanical Engineer – Building Services to lead design and delivery of mechanicaI building services for commercial, industrial, and institutional projects.

You will oversee HVAC, plumbing and fire protection packages, mentor junior staff, and drive field investigations from concept to completion. Ideal candidates bring 6+ years in building services, a PE license, and proficiency with AutoCAD, Revit, and HAP, plus strong codes knowledge (ICC, ASHRAE, NFPA).

Qualifications

• 6+ years of progressive experience in building services design (HVAC, Plumbing, and Fire Protection) within commercial, industrial, or institutional sectors.
• Active PE license in the state of practice (or obtainable via reciprocity within 6 months).
• Proficiency in AutoCAD, Revit, and HAP or equivalent building performance software.
• Deep working knowledge of mechanical/building codes and standards (ICC, ASHRAE, NFPA).
• Proven track record delivering complex building services projects on time and on budget.

Responsibilities

• Design and lead production of mechanical building services packages including advanced HVAC, plumbing, and fire protection plans.
• Analyze HVAC loads, energy usage, and life-cycle costs to deliver high-performance solutions.
• Lead site visits for renovations and additions to gather ground-truth data for integration.
• Author and review technical specifications, reports, and condition assessments.
• Direct construction-phase administration, manage RFIs, submittals, and field assessments.

Skills

HVAC design

Plumbing design

Fire protection design

Project leadership

Mentoring

Education

Professional Engineer (PE) license

BS in Mechanical Engineering

Tools

AutoCAD

Revit

HAP (Carrier)

Job description

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.