<div class="content-intro"><h3>About Us</h3> <div> <div>AGE Solutions is a premier technology and professional services company, providing in-depth consulting, advanced technology solutions, and essential services throughout the U.S. government, defense, and intelligence sectors. Prioritizing innovation and client-focused solutions, we assist major agencies in addressing intricate issues and ensuring a more secure future.</div> </div></div><p>AGE Solutions is looking for a <strong>Middle-Tier Database Developer, </strong>responsible for building and maintaining robust middle-tier services and data-driven applications. You will work closely with cross-functional teams to design, develop, maintain and optimize scalable backend systems that power critical business functionality.</p> <p>The ideal candidate combines solid middle-tier development experience with deep database development knowledge and a strong understanding of system design, performance, maintainability, and data integrity.</p> <p><strong>Responsibilities Include: </strong></p> <ul> <li>Design, develop, and maintain middle-tier services and backend components using C# and .NET technologies that interact with Oracle databases and enterprise systems.</li> <li>Translate business and functional requirements into scalable backend application designs and technical solutions.</li> <li>Develop application business logic, APIs, services, interfaces, and data-access components that support business requirements.</li> <li>Build robust RESTful APIs and business logic layers to support web applications and connectivity to external interfaces.</li> <li>Implement efficient application-to-database interactions using Oracle SQL, PL/SQL, stored procedures, and appropriate data-access frameworks.</li> <li>Design, develop, optimize, and maintain relational databases (Oracle preferred) that load, store, and transmit complex data transactions (e.g., EDI).</li> <li>Optimize database performance, indexing strategies, and query tuning</li> <li>Strong understanding of database design principles and SQL, and ability to navigate between database and client web page technology.</li> <li>Implement actionable database code using complex SQL, PL/SQL packages, procedures, functions, triggers, views, and other database objects.</li> <li>Apply SOLID principles and clean architecture practices in application design.</li> <li>Troubleshoot and resolve production issues related to application logic and data layers</li> <li>Contribute to architectural decisions and technical design discussions</li> <li>Troubleshoot application, integration, database connectivity, performance, and production issues across the application stack.</li> <li>Collaborate with frontend developers, Oracle database developers, business analysts, testers, architects, and infrastructure teams to solve critical business issues.</li> <li>Support automated testing, CI/CD pipelines, application deployments, releases, and production operations.</li> <li>Primary duty (≥50%) involves applying systems analysis techniques and designing/developing/testing software/services and databases to meet user/system specifications.</li> </ul> <p><strong>Required Skills, Qualifications and Experience:</strong></p> <ul> <li><strong>Citizenship and Clearance: </strong> <ul> <li>Must be a US citizen.</li> <li>Must be able to achieve a NACLC clearance.</li> </ul> </li> <li><strong>Experience: </strong> <ul> <li>Minimum 5 years related experience.</li> </ul> </li> <li><strong>Education:</strong> <ul> <li>Bachelor’s degree</li> </ul> </li> <li><strong>Skills and Knowledge: </strong> <ul> <li>Languages and Frameworks: C#, JavaScript, .NET MVC, Angular</li> <li>Database: Oracle (PL-SQL), Toad SQL Editor</li> <li>Version Control: Azure DevOps Server 2022, Visual Studio 2026</li> <li>Additional Technologies: Git, Docker, Kubernetes, Microsoft Azure.</li> <li>Experience applying SOLID principles and object-oriented design patterns</li> <li>Strong proficiency in C# and .NET (.NET Core/.NET 6+) and ASP.NET Web API</li> <li>Experience designing and building RESTful APIs and middle-tier services</li> <li>Experience with ORM frameworks (Entity Framework preferred, Dapper)</li> <li>Strong SQL skills and experience with relational databases (Oracle preferred, SQL Server, PostgreSQL)</li> <li>Experience writing and optimizing complex queries and stored procedures</li> <li>Strong understanding of data modeling and database design principles</li> <li>Experience with version control systems (TFVC and Git)</li> <li>Strong problem-solving skills and attention to detail</li> </ul> </li> <li><strong>Location: </strong> <ul> <li><strong>Hybrid Work Environment:</strong> Requires on-site work at the client facility in Northeast Philadelphia, PA, each Wednesday. <ul> <li>Candidates should be aware that the Government may increase the on-site requirement in the future.</li> </ul> </li> </ul> </li> </ul> <p><strong>Preferred Qualifications:</strong></p> <ul> <li>Certifications: <ul> <li>DoD IAT Level II certification</li> </ul> </li> <li>Experience with Electronic Data Interchange (EDI) is a plus.</li