Available to hire
Hello! I’m Kelvin Mills , a Senior Software Engineer with 12 years of hands-on experience building enterprise systems using .NET Core, C#, Azure, and modern JavaScript frameworks. I specialize in designing scalable APIs, optimizing backend performance, and architecting cloud-native applications across the full stack. I’m passionate about clean code, test automation, troubleshooting complex issues, and solving deep technical challenges.
I love mentoring junior engineers, conducting thoughtful code reviews, and fostering collaborative teams that deliver reliable software. I thrive in multi-environment deployments and enjoy turning complex requirements into robust, maintainable solutions that users rely on every day.
Experience Level
Language
English
Fluent
Work Experience
Senior Software Engineer at Microsoft
October 1, 2022 - PresentLed architecture and development of a next-generation enterprise platform using .NET Core and microservices, improving modularity, resilience, and cross-platform compatibility. Designed RESTful APIs and integrated with React and Angular frontends to enable real-time data interactions, increasing client-portal engagement by 20%. Championed TDD-based test automation (xUnit, NUnit, SpecFlow, Selenium) improving test coverage and reducing deployment defects by 25%. Built high-performance data pipelines with SQL Server, PostgreSQL, and NoSQL databases; optimized legacy EF queries for 30% API latency reduction. Integrated Elasticsearch and Redis for advanced search and caching; utilized ELK for real-time monitoring. Led Docker and Kubernetes-based containerization and deployment strategies for scalable production workloads. Developed cross-platform mobile apps with Xamarin and Blazor. Architected Azure infrastructure (Blob Storage, Azure SQL, Azure Functions) for high availability and disast
Senior .NET Full Stack Engineer at The Home Depot
September 30, 2022 - October 20, 2025Led design and development of scalable enterprise retail platforms using ASP.NET Core, C#, and Java (Spring Boot) to support customer-facing applications and internal tools. Directed cloud migration of monolithic applications to AWS, leveraging EKS, Lambda, SNS/SQS, and Terraform, reducing cloud costs by 15% and improving infrastructure reliability. Engineered secure authentication and authorization using OAuth2, JWT, and ASP.NET Identity. Integrated Apache Kafka for real-time event streaming of orders, inventory, and in-store transactions. Designed and delivered responsive UIs with React and Blazor, improving associate and customer workflows while reducing frontend latency by 20%. Established end-to-end observability with Prometheus, Grafana, and the ELK stack, proactively identifying bottlenecks during peak loads. Collaborated with DevOps to implement CI/CD pipelines, increasing deployment frequency and minimizing downtime.
.NET Engineer at The Home Depot
September 30, 2016 - October 20, 2025Developed and maintained RESTful APIs and backend services using C#, ASP.NET MVC, and .NET Framework, supporting core retail operations such as inventory management, product catalog updates, and store lookup tools. Refactored legacy in-store tools, reducing technical debt and improving maintainability by 30%. Collaborated with frontend teams to integrate APIs with AngularJS dashboards. Worked with business analysts and QA to refine requirements, write test cases, and resolve bugs in Agile sprints. Enhanced performance of SQL Server stored procedures and EF queries, speeding up high-traffic features. Implemented logging and diagnostics using Serilog and Application Insights, increasing production visibility and reducing resolution times. Gained hands-on exposure to CI/CD through Jenkins pipelines and peer code reviews.
Back End Developer at PNC Bank
November 30, 2014 - October 20, 2025Contributed to secure enterprise banking platforms using C#, ASP.NET MVC, and ADO.NET, ensuring data integrity, transactional consistency, and high availability across critical services. Built internal apps with VB.NET and AngularJS, integrating with backend workflows for account management, loan processing, and financial reporting. Implemented and maintained data access layers across SQL Server, Oracle, and MySQL, optimizing stored procedures and queries to support real-time banking operations and reporting. Championed test-driven development with xUnit and NUnit, increasing test coverage and reducing defects. Developed responsive, secure web interfaces using Bootstrap and jQuery for internal users. Collaborated with cross-functional teams to integrate third-party financial services, payment gateways, and compliance systems.
Senior Software Engineer at Microsoft
October 1, 2022 - PresentSpearheaded architecture and development of a next-generation enterprise platform using .NET Core and microservices, improving modularity, resilience, and cross-platform compatibility. Designed RESTful APIs and integrated them with React/Angular frontends for real-time data interactions. Implemented TDD-based automation with xUnit, NUnit, SpecFlow, and Selenium, increasing test coverage and reducing defects. Built high-performance data pipelines across SQL Server, PostgreSQL, and NoSQL stores; optimized legacy EF queries to cut API latency by ~30%. Integrated Elasticsearch and Redis for search and caching, and used ELK for real-time health insights. Led Docker and Kubernetes containerization, ensured scalable deployments, and developed cross-platform mobile apps with Xamarin/Blazor. Established Azure infrastructure for high availability and disaster recovery and built CI/CD pipelines with Azure DevOps.
Senior .NET Full Stack Engineer at The Home Depot
September 1, 2022 - October 20, 2025Led design and development of scalable enterprise retail platforms using ASP.NET Core, C#, and Java Spring Boot; migrated monoliths to AWS (EKS, Lambda, SNS/SQS) with Terraform, reducing cloud costs and improving reliability. Implemented OAuth2/JWT/ASP.NET Identity for secure access across services. Integrated Apache Kafka for real-time event streaming. Delivered responsive UIs with React and Blazor, improving associate and customer workflows and reducing frontend latency. Established end-to-end observability with Prometheus, Grafana, and the ELK stack, and collaborated with DevOps on CI/CD pipelines enabling frequent, reliable deployments. Mentored junior engineers and promoted clean architecture.
.NET Engineer at The Home Depot
September 1, 2016 - October 20, 2025Developed and maintained RESTful APIs and backend services using C#, ASP.NET MVC, and .NET Framework to support core retail operations (inventory, product catalog, store tooling). Modernized legacy in-store tools, refactoring modules to reduce technical debt and improve maintainability. Worked with frontend teams to integrate APIs with AngularJS-based dashboards. Optimized SQL Server stored procedures and Entity Framework queries to improve load times, added logging with Serilog and Application Insights, and supported early CI/CD with Jenkins.
Back End Developer at PNC Bank
November 1, 2014 - October 20, 2025Developed secure, enterprise banking platforms using C#, ASP.NET MVC, and ADO.NET; built internal apps with VB.NET and AngularJS, integrating backend workflows for account management and reporting. Implemented and optimized database access across SQL Server, Oracle, and MySQL. Promoted test-driven development with xUnit and NUnit, and delivered responsive web interfaces using Bootstrap and jQuery. Collaborated with cross-functional teams to integrate third-party financial services, payment gateways, and compliance systems.
Education
Bachelor of Science in Computer Science at Florida Institute of Technology
January 1, 2008 - January 1, 2012Bachelor of Science in Computer Science at Florida Institute of Technology
January 1, 2008 - January 1, 2012Qualifications
Industry Experience
Software & Internet, Financial Services, Retail, Professional Services, Media & Entertainment
Experience Level
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