Sr. Software Developer; Req

At Lyles Services Co., a subsidiary of Lyles Construction Group, of we take pride in our employee and client-centric culture. Our employees and customers are at the forefront of everything we do and how we operate our business. Safety is our top priority and we work hard to ensure everyone goes home to their loved ones each day.

We are looking for ambitious individuals to join our team, who are passionate about their performance and who will continue to execute and believe in our core values of:

• Teamwork: We recognize our primary asset is our people. Mutual respect provides the foundation for our success.
• Integrity: Our work is performed with high standards of service, quality, and integrity and because of this, we have had the privilege to lead some of the most innovative projects in California.
• Commitment: We understand that lasting relationships are the lifeline of our business so we pay personal attention to our clients by focusing on them as collaborative partners.

If you are looking for a company who will value you and provide you with great employee benefits, training and development opportunities, career growth and the opportunity to be a part of something bigger, then Lyles Services Co. is right for you!

Essential duties and other responsibilities include, but are not limited to, the following:

• Design, develop, and maintain backend APIs and services using .NET 9 and ASP.NET Core, following Clean Architecture and CQRS patterns with MediatR
• Build modern, responsive frontends with Next.js, React, Type Script, and Tailwind CSS using component libraries such as shadcn/ui and AG Grid Enterprise
• Integrate AI and large language model capabilities into internal tools using Anthropic Claude, OpenAI, and emerging agent frameworks such as Microsoft Agent Framework
• Develop and optimize SQL Server databases, writing performant queries, managing Entity Framework Core migrations, and leveraging Dapper for high-throughput data access
• Modernize legacy systems by migrating older .NET and Angular codebases to current frameworks and architectures
• Build and maintain CI/CD pipelines with Git Hub Actions, deploying applications to Windows Server/IIS and Azure cloud infrastructure
• Implement and maintain background processing systems using Hangfire for scheduled jobs, queue processing, data synchronization, and automated notifications
• Design and build reporting solutions using QuestPDF and ClosedXML, replacing legacy Crystal Reports and SSRS-based workflows
• Integrate with external systems including Viewpoint Vista ERP, Microsoft Graph API, and Azure Active Directory (Entra )
• Collaborate with a small technology team to scope, architect, and deliver features end-to-end, from database schema through API design to user interface
• Participate in code reviews, architectural discussions, and continuous improvement of development practices and tooling
• Support and troubleshoot production applications, diagnose performance issues, and implement monitoring and logging solutions using NLog, Serilog, and related tools

To perform this job successfully, an individual must be able to perform each essential duty satisfactorily. The requirements listed below are representative of the knowledge, skill, and/or ability required. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

• 5+ years of professional software development experience (9+ years in lieu of a degree)
• Strong proficiency in C# and .NET (ASP.NET Core, Entity Framework Core, MediatR, dependency injection)
• Experience building frontend applications with React and Type Script
• Solid SQL Server skills including query optimization, stored procedures, and schema design
• Experience with RESTful API design and authentication patterns (JWT, OAuth 2.0, Windows Authentication)
• Proficiency with Git version control and CI/CD pipelines (Git Hub Actions preferred)
• Ability to work across the full stack and take ownership of features from design through deployment
• Strong communication skills and comfort working…