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Power Electronics Firmware Engineer

Lennox
Carrollton, TX Full Time
POSTED ON 3/14/2026
AVAILABLE BEFORE 4/29/2026
Who We Are

Lennox (NYSE: LII) Driven by 130 years of legacy, HVAC and refrigeration success, Lennox provides our residential and commercial customers with industry-leading climate-control solutions. At Lennox, we win as a team, aiming for excellence and delivering innovative, sustainable products and services. Our culture guides us and creates a workplace where all employees feel heard and welcomed. Lennox is a global community that values each team member’s contributions and offers a supportive environment for career development. Come, stay, and grow with us.

What Drives Success

Innovate your career.

When you choose Lennox, you're getting the best.

When you work at Lennox, you’re among the best.

As a leading innovator of home and commercial, heating, cooling, refrigeration, air-quality, and related services, Lennox International is committed to helping our people innovate our products and their careers.

This position calls for an experienced, knowledgeable, and talented engineer to design and develop software components for the Controls Engineering organization. As a Software Design Engineer, you will have an opportunity to lead and collaborate with other engineers to design, plan, develop, and maintain embedded software components.

Duties Include But Are Not Limited To

  • Responsible for the successful implementation and delivery of embedded software products and components throughout the entire product lifecycle.
  • Responsible for project deliverables on time and with high quality.
  • Assure proper technical requirement definition with internal and external customers, marketing, manufacturing, and other support groups.
  • Actively participate in the definition and implementation of new processes and improvements.
  • Identify and create new technologies and ideas to increase the organization’s intellectual property and to better address customer needs.
  • Participate in technical feasibility analysis and prototyping activities.

What We Are Looking For

Education Requirements:

  • Bachelors/Masters in Electrical Engineering with a specialization in Power Electronics is required.

Technical Skills

  • 5 years of professional experience developing power/motor control firmware using C/C and model-based design using tools such as MATLAB Simulink.
  • Experienced in the architecture, design, hardware/software integration, and development of embedded software to interface and control power electronic convertors.
  • Design experience with power invertors, PFCs on TI microcontrollers 28027, 28062F, 280025 or equivalent microcontrollers is required.
  • Design and debug experience for peripherals needed for motor control such PWMs, ADCs and timers.
  • Experience in the design of analog and digital circuits and control boards.
  • Experience and familiarity with modern control theory applied to power domain.
  • Experience collaborating in multi-site software development teams and projects.
  • Ability to develop unit test driven software components.
  • Experience with Real Time Operating Systems (RTOS) software development.
  • Familiarity in technical leadership, project planning, and project tracking.
  • Familiar with serial communication protocols (I2C, RS-485, RS-232, CAN, SPI).
  • Familiar with industry standard embedded design and debugging tools (JTAG, protocol analyzers, emulators).
  • Familiar with Configuration Management tools (Version control, bug tracking, change management, automated builds, and coding standards).
  • Familiarity with static and dynamic analysis software tools.
  • Experience developing in Waterfall and Iterative Software development processes.
  • Familiarity with HVAC control systems.

Teaming/Soft Skills

  • Excellent verbal and written communication skills.
  • Ability to effectively communicate with both technical and non-technical staff.
  • Ability to collaborate across multiple functional teams (Hardware, Testing, Technical Support, Manufacturing) to deliver sound technical solutions to our customers.
  • Demonstrate ability to drive product and process improvements throughout the software organization.
  • Ability to work with third parties and offshore development teams as needed.
  • Self-driven, results oriented.

What We Offer

Compensation : This is a salaried exempt role. The starting salary range for this role and market is between $117,000 - $132,000 annually. Factors that may affect starting salary include geography/market and the skills, education, experience, and other qualifications of the successful candidate. This position is also eligible for the BroadBase Incentive (BBI) program with a target payout of 2%. Employees in this role are not eligible for overtime.

Location and Schedule: This position is located in Carrollton, TX and will be in the office Monday through Friday.

Benefits : Subject to applicable eligibility requirements, the following benefits are offered for this role: tuition reimbursement; medical, dental, and vision insurance; prescription drug coverage; 401(k) retirement plan; short-term disability insurance; 8 weeks paid birthing leave; 2 weeks paid bonding leave; life and long-term disability insurance.

Paid Time Off: Depending on date of hire, and subject to applicable eligibility requirements, new employees in this role also receive up to: 12 days paid time off, 2 paid well-being days, 1 paid volunteer day, 9 to 11 paid company holidays depending on the year, and 3 floating holidays per year.

Our Culture : At Lennox, our Core Values of Integrity, Respect & Excellence are ingrained in the fabric of the organization. They define our culture – which is about how we do business and how we treat others. Lennox is not just a workplace; we are a global community that values each team member’s contributions. As an equal opportunity employer, we are committed to recruit, develop, and retain talented individuals from a wide range of backgrounds, ensuring that everyone has the opportunity to succeed and contribute to our continued growth and success. At Lennox, you’ll take pride in our brands, knowing you are part of something special. Come, stay, and grow with us!

Disclaimers: The compensation and benefits information is accurate as of the date of this posting. Lennox reserves the right to modify this information at any time, with or without notice, subject to applicable law.

Salary : $117,000 - $132,000

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