Must also have demonstrated experience with each of the following: (1) Designing/developing multi-tier web applications using ASP.NET (MVC, Web Forms), JavaScript, AJAX, jQuery, JSON, HTML, and REST/Web API interfaces; (2) Architecting, developing, and optimizing databases and data solutions using Microsoft SQL Server and Oracle PL/SQL, for ETL operations across available datasets, experience working with SSIS packages and ETL technologies; (3) Developing and designing new applications and enhancing existing web applications by delivering new features using HTML5, CSS3, JavaScript, Angular (including AngularJS), and ASP.NET MVC in an Agile/Scrum environment; (4) Working with CI/CD pipelines, including Azure DevOps Pipelines and/or tools such as Jenkins, Bitbucket, and Octopus Deploy, supporting continuous integration and continuous delivery for automated code deployments; (5) Modernizing legacy web applications by migrating ASP.NET MVC solutions to ASP.NET Core using C#/.NET; (6) Implementing inter-service communication using REST APIs, gRPC, and messaging platforms such as Apache Kafka and Azure Service Bus; (7) Implementing unit testing using xUnit and/or NUnit, including use of mocking frameworks such as Moq and/or NSubstitute, and performing static code analysis using SonarQube; (8) Working closely with Chief Technical Architect and Application Manager, participating in discussions with Business Analysts, Subject Matter Experts, and Product Managers to determine systems design and program requirements needed to implement changes to the existing systems and new systems in Agile environment which includes participating in sprint planning and retrospective sessions; (9) Working with ASP.NET Web Forms, MVC, WCF, SignalR, and REST APIs, including implementing OAuth 2.0, OpenID Connect, and JWT for secure authentication/authorization, and designing/documenting APIs using Swagger/OpenAPI; (10) Working with relational RDBMS, particularly Microsoft SQL Server, along with Neo4j, and with GraphQL and Cypher query language; and (11) Working with Infrastructure as Code (IaC) tools such as Pulumi (Pulumi CLI) using TypeScript to provision, manage, and tear down Azure cloud resources. Engage with the Architecture Review Council (ARC) to assess and refine application architectures, advocating for reusability of existing components and ensuring smooth integration within the broader IT ecosystem.