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Lennox Controls Quality & Test Engineer in Carrollton, Texas

Company Overview

Lennox International (LII) is a leading global provider of innovative climate control solutions for heating, ventilation, air conditioning, and refrigeration (HVACR) markets.

Beginning over a century ago, Lennox International has built a strong heritage of Innovation and Responsibility. Our position as an innovation leader continually inspires us to promote more efficient energy use and a healthier environment through our product operations. Our engaged and diverse workforce is committed to providing climate control solutions that provide the most value and comfort for our customers.

We are proud to have instilled a shared sense of responsibility and commitment among our approximately 10,000 employees located throughout North America, South America, Europe, Asia, and Australia.

Job Description


This position is located at our premier Product Development & Research (PD&R) facility in Carrollton, TX. Working on new product initiatives providesa large opportunity to innovate intellectual properties. As of October 2019, PD&R is approaching upon 700 patents issued. Lennox International (LII) has rewarding practices for engineers who bring creativity and innovation to our products. Advanced Controls and User interfaces (through mobile applications) is a key differentiator from our competitors. As such our organization has continued to grow as the demand for this technology grows in the market.


As a Controls Engineer, you will be an integral part of the product development and research team. You will lead innovation of product development across a wide array of new products.You will conduct system verifications for controls engineering to maintain quality of all the new and maintenance firmware release cycles. In this role, youwill also collaborate with global engineering teams to ensure our products have the highest standards of technical depth, passion, quality and excellence.

Clickto see what exciting technology our engineers are working on.


At Lennox, we realize that our greatest assets are our employees. This is why we are committed to providing limitless opportunities for growth and development of all our employees, largely promoting from within the organization. Our Controls Engineer position is ideal for anyone looking for a technically challenging career with long term growth possibilities.


  • Competitive base salary

  • Yearly performance bonus

  • Medical / Dental / Vision

  • Excellent 401K Matching Program – Additional Company Contributions After 1 Year of Service!

  • Stock Purchase Program

  • Community involvement opportunities

  • Robust Employee Assistance Program

  • Relocation assistance is available

  • And much, much more!



BS/MS in Electrical, Electronics or Computer Engineering

Technical Skills

  • Proficiency in C, C++ for Embedded firmware development and Testing is required.

  • Experience programming and testing multi task or multi-threaded embedded applications.

  • Experience in test automation tools

  • Good knowledge in embedded firmware testing, test design, test development processes and related tools.

  • Working knowledge for developing white box and black box tests.

  • Experience with serial communication protocols (I2C, RS-485, RS-232, CAN)

  • Knowledge of networking protocols TCP/IP, UDP, HTTP and application protocols like JSON

  • Knowledge of wireless communication protocols (Wi-Fi and Bluetooth) is a plus.

  • Experience in developing and/or testing applications using RESTFul and SOAP web service architectures is an advantage

  • Experience with scripting languages like Python.

  • Knowledge of Requirements Management, Configuration Management concepts source code version control, bug tracking and traceability.

  • Familiarity with the HVAC industry is a plus.

Teaming/Soft Skills

  • Excellent communication skills.

  • Excellent collaboration and teaming skills.

  • Creativity and ability to learn quickly are essential.

  • Ability to quickly come up to speed on new projects.

  • Ability to adapt existing and new technologies to the HVAC field.

  • Ability to manage multiple priorities and adapt to changing demands.

If you are a motivated self-starter with strong interpersonal and organization skills, this may be the opportunity for you.

Job Locations US-TX-Carrollton

Requisition # 2019-21192

Category Engineering

Shift / Hours Regular

Lennox International is an Equal Opportunity Employer and supports a diverse, inclusive work environment.

All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, transgender status, sexual orientation, national origin, genetics, disability, age, or veteran status.

Applicants with Disabilities

If you are an individual with a disability or a disabled veteran who is unable to use our online tools to search and apply for jobs, you may request a reasonable accommodation by contacting us at Recruitment@Lennoxintl.com

E-Verify Participation

For jobs located within the United States, LII participates in the Electronic Employment Verification Program known as E-Verify.

Please visit the E-Verify website for more information on this program.

Diversity & Inclusion Website