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 YOU WILL BE DOING:

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 Principal 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 software components for Internet of Things devices and Cloud.

DUTIES INCLUDE BUT ARE NOT LIMITED TO:

• Responsible for the successful implementation and delivery of 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.

#LI-JM1 #LI-onsite

WHAT WE ARE LOOKING FOR:

Education Requirements:

• BS in Computer Engineering/Computer Science is required.
• MS in Computer Engineering/Computer Science is preferred.

Technical Skills:

• 10+ years of professional software development experience, with a focus on IoT and embedded systems.
• Strong understanding of IoT architectures, protocols (e.g., MQTT, CoAP), and standards.
• Experience with edge computing platforms and cloud-based IoT services (e.g., AWS IoT, Azure IoT Hub).
• Strong proficiency in C++, including Object-Oriented Programming (OOP), templates, multi-threading, and designing multi-threaded, concurrent systems with synchronization mechanisms (e.g., mutexes, atomic operations).
• Experience with modern C++ frameworks such as Poco, Boost Beast, and similar libraries.
• Deep understanding of DDS (Data Distribution Service) architecture, including Quality of Service (QoS) policies, discovery mechanisms, and real-time data distribution.
• Proficient in networking protocols (TCP/IP, UDP, multicast) and socket programming for distributed systems.
• Knowledge of real-time system programming, memory management, and performance optimization in C++.
• Familiarity with middleware concepts, including message-oriented middleware (MOM) and distributed computing principles.
• Proficiency with CMake for managing cross-platform build systems.
• Experience working with Linux, Windows, and RTOS environments for developing distributed applications.
• Experience in high-level programming languages such as JavaScript and Python.
• Strong understanding of software design principles, best practices, and unit test-driven development.
• Proficient in shell scripting for automation, system administration, and process optimization.
• Proficiency in Azure DevOps and solid understanding of Kubernetes for container orchestration.
• Strong experience with SQL, including stored procedures, triggers, and working with MySQL.
• Experience with Azure cloud services, including VMs, VMSS, Load Balancers (L4, L7), Log Analytics, Application Insights, and Azure Kubernetes Service (AKS).
• Proven experience in developing and deploying cloud applications using Azure or other cloud platforms.
• Familiarity with Configuration Management tools such as version control, bug tracking, change management, automated builds, and coding standards.

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 (Systems Architecture, Embedded, Mobile Apps, IT, Hardware, Testing, Technical Support) 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:

At Lennox, our greatest assets are our employees, and we are committed to providing limitless opportunities for growth and development of all, largely promoting from within the organization. This position is ideal for anyone looking for a diverse working environment with long term growth possibilities. This role is based on-site and will be in the office Monday – Friday.

BENEFITS: 

• Competitive base salary
• Excellent medical plans designed to support healthy lifestyles
• Mental and financial health programs
• Outstanding 401k with company matching
• Employee stock purchase program
• Community involvement opportunities
• Robust employee assistance program
• And much, much more!

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!