Lead Application Developer

Lennox International•Richardson, TX

20h•Hybrid

About The Position

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 EMPLOYER: Lennox International Inc. JOB TITLE: Lead Application Developer LOCATION: 2140 Lake Park Blvd, Richardson, TX 75080 (Hybrid role, may work from home)

Requirements

Bachelor’s or foreign equivalent degree in Computer Science, Electronics Engineering, Software Engineering, or a related field, and 6 years of progressive, post-baccalaureate experience in the job offered, or as a Software Developer, Programmer Analyst, Senior Software Engineer, Project Lead, or in a related/similar position.
6 years of experience in designing, developing, and supporting mobile and web-based applications, including background processes, reports, and SQL stored procedures.
6 years of experience in the .NET ecosystem, including C#, ASP.NET MVC, .NET Core, Web API, and Entity Framework.
6 years of experience in developing front-end and back-end applications.
6 years of experience in maintaining database objects including Stored Procedures, Functions, Jobs in Microsoft SQL.
6 years of experience in developing or supporting mobile application, including iOS Native, and Xamarin.
6 years of experience in ensuring application responsiveness, developing security and data protection measures, and supporting future development initiatives.
6 years of experience in code reviews, debugging code, automating tasks through scripting, and designing and writing reports using SSRS.
6 years of experience in collaborating with internal and external teams.

Nice To Haves

React/Angular optional

Responsibilities

Lead the end-to-end architecture and design of enterprise-grade applications using .NET technologies.
Define and enforce coding standards, architecture best practices, and DevOps pipelines.
Provide technical direction, mentorship, and code review guidance to developers and junior team members.
Drive modernization of legacy applications toward microservices, cloud-readiness, or clean architecture models.
Design, develop, and maintain web and API-based applications using C#, ASP.NET Core, MVC, and Web API.
Write optimized SQL Server code including stored procedures, views, triggers, and performance tuning.
Implement responsive UI using HTML, CSS, JavaScript, and front-end libraries (React/Angular optional).
Maintain and enhance SSRS reports and other reporting deliverables.
Participate in Agile ceremonies and ensure timely and quality delivery of sprint goals.
Collaborate with Product Owners, QA, DevOps, and stakeholders to ensure business alignment.
Manage code branching strategies, CI/CD pipelines, and deployment automation.
Ensure application performance, security, and scalability through proactive testing and monitoring.
Troubleshoot complex application and database issues in production environments.
Manage documentation of technical design, user guides, and support handovers.