Senior Mechanical Engineer — HVAC Design Leader

Lennox; Carrollton (TX); On-site; USD 97,000 - 127,000; Full time

Benefits offered by this job

Tuition reimbursement

Medical, dental, and vision insurance

401(k) retirement plan

Short‑term disability insurance

12 days paid time off

12 paid holidays

3 floating holidays per year

Job summary

Lennox is seeking a Mechanical Engineer III to lead the design, development, and validation of HVAC systems and components. This senior individual contributor will drive technical solutions and collaborate across engineering, product management, manufacturing, and test teams to deliver high‑quality, cost‑effective products.

The role requires a bachelor’s degree in mechanical engineering and 5–8+ years of experience, with strong CAD skills in SolidWorks or Creo.

Qualifications

• Bachelor’s degree in Mechanical Engineering or related field.
• 5–8+ years of relevant engineering experience.
• Strong understanding of thermodynamics, heat transfer, and airflow systems.
• Experience with CAD tools (SolidWorks, Creo, or similar).

Responsibilities

• Lead design and development of mechanical systems and components from concept through production.
• Own subsystem or product-level engineering execution, including CAD models, drawings, and specifications.
• Drive design decisions balancing performance, cost, manufacturability, and reliability.
• Define and support system testing and validation activities in collaboration with lab teams.
• Analyze test data and lead design iterations to meet performance and regulatory requirements.
• Support new product introductions (NPI), product updates, and platform standardization efforts.
• Lead root‑cause analysis and resolution of field, warranty, and production issues.
• Partner with cross‑functional teams (product management, manufacturing, sourcing, lab/test, and sales).
• Mentor junior engineers and review technical work for quality and accuracy.

Skills

Thermodynamics

Heat transfer

Airflow systems

Leadership

Analytical thinking

Education

Bachelor's degree in Mechanical Engineering

Tools

SolidWorks

Creo

Job description

Lennox is seeking a Mechanical Engineer III to lead the design, development, and validation of HVAC systems and components. This senior individual contributor will drive technical solutions and collaborate across engineering, product management, manufacturing, and test teams to deliver high‑quality, cost‑effective products.

The role requires a bachelor’s degree in mechanical engineering and 5–8+ years of experience, with strong CAD skills in SolidWorks or Creo.