Company Profile :

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.

Job Description :

Responsibilities :

- Design and develop cloud-connected IoT software and embedded/edge components, with C++ as the primary language.

- Build services for device onboarding, telemetry ingestion, device management, and command/control workflows.

- Develop distributed, real-time communication components integrating Edge, HTTPS, and REST APIs.

- Own successful implementation and delivery of software products and components throughout the product lifecycle, on time and with high quality.

- Assure proper technical requirement definition with internal and external customers, marketing, manufacturing, and other support groups.

- Lead technical design and architecture reviews, and participate in prototyping activities.

- Collaborate with Architecture, Embedded, Mobile Apps, IT, Hardware, QA, Manufacturing, Technical Support, and Operations teams.

- 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.

- Mentor and train other engineers.

- Having Open mindset to work with legacy network libraries in IoT domain.

- More curious to learn any Open Source libraries.

Experience & Languages :

- 10+ years of professional software development experience, with a focus on IoT and embedded systems.

- Proficiency in C++ developing distributed, real-time applications.

- 5+ years of experience with multithreaded application development and debugging.

- 5+ years of experience with socket-level TCP and UDP development in C/C++, using modern debugging tools.

- Strong understanding of software design principles and best practices; ability to develop unit-test-driven software components.

Cloud & IoT :

- Strong understanding of IoT architectures, protocols, and standards : MQTT, WebSockets, HTTPS, REST APIs, JSON/XML.

- Experience with cloud IoT services such as Azure IoT Hub and AWS IoT Core.

- Strong understanding of device-to-cloud integration.

Linux & Debugging :

- Strong Linux Ubuntu skills, including creating and maintaining system services and navigating the system using Bash.

- Strong skills monitoring and managing Linux services and troubleshooting service failures using gdb, coredumps, trace files, and log files.

- Strong networking skills (TCP, UDP, ARP, IGMP) with the ability to monitor and debug on a live system.

- Strong experience using SSH to access and manage systems in the cloud.

- Strong Bash shell script authoring and maintenance.

Network & Home Router :

- Strong understanding of Network Address Translation (NAT), network handshakes, and Round-Trip Time (RTT) analysis and debugging.

- Strong understanding of Publisher-Subscriber (Pub-Sub) frameworks in the IoT domain, including MQTT brokers, DDS (Data Distribution Service) standards, message queuing systems, and streaming platforms.

- Strong understanding of distributed systems architecture, clustering, and middleware concepts.

- Strong understanding of client-server and Pub-Sub application development, packaging, deployment, and execution, including Debian packages (.deb) and standalone executable binaries.

Tools :

- Strong skills with Git and GitLab.

- Experience with Visual Studio Code and Visual Studio with WSL.

- Experience with Configuration Management tools (version control, bug tracking, change management, automated builds, and coding standards).

- Experience with JetBrains CLion is a plus.

- Remote debugging skills using gdb and gdbserver are a plus.

- Experience with Artitellery or any load test framework is a plus.

Preferred Skills :

- Experience with OpenDDS or another Data Distribution Service (DDS) middleware.

- Experience with at least one other high-level language, such as C#, Java, Python, or Node.js.

- Microservices architecture, Docker, and Kubernetes.

- CI/CD experience (Azure DevOps, Jenkins, GitHub Actions, or similar).

- Experience developing and deploying cloud applications on Microsoft Azure, with emphasis on: Virtual Machine Scale Sets; load balancing; Syslog and Azure Metrics reporting and monitoring reports; network VM maintenance planning and monitoring.

- Multi-region and availability-zone VMSS experience is a plus.

- Azure DevOps Boards, Backlogs, Sprints, and Plans; ability to understand an Azure DevOps pipeline and the concepts it holds.

- Experience with edge computing platforms.

- Experience working in Agile and globally distributed teams.

Teaming / Soft Skills :

- Excellent verbal and written communication skills, with technical and non-technical staff.

- Strong technical leadership and architectural decision-making skills.

- Ability to collaborate across multiple functional teams and external partners to deliver sound technical solutions to our customers.

- Demonstrated 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, with strong organizational skills and ability to train and mentor others.

Qualifications :

Education Requirements :

- BS in Computer Science, Computer Engineering, or equivalent is required.

- MS in Computer Science/Computer Engineering or equivalent is preferred.