Mid-Tier Application and Database Developer

### About Us 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. AGE is seeking a **Software Developer** with strong C# and database expertise to join our development team. This role focuses on building and maintaining robust middle-tier services and data-driven applications. The candidate will work closely with cross-functional teams to design, develop, maintain and optimize scalable backend systems that power critical business functionality. 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. This role is hybrid in Philadelphia, PA, requiring onsite reporting at the customer’s facility at least 1 day/week. Candidates must reside within a commutable distance of Philadelphia, PA in order to work onsite as required. **Responsibilities Include:** - Design, develop, and maintain middle-tier services and backend components using C# and .NET technologies. - Apply SOLID principles and clean architecture practices in application design. - Build robust APIs and business logic layers to support web and enterprise applications. - Collaborate with front-end developers, architects, and DevOps teams to deliver integrated solutions. - Design, develop, optimize, and maintain relational databases (Oracle preferred). - Write efficient stored procedures, views, functions, and complex queries. - Optimize database performance, indexing strategies, and query tuning. - Participate in code reviews and enforce best practices for clean, maintainable code. - Troubleshoot and resolve production issues related to application logic and data layers. - Contribute to architectural decisions and technical design discussions. - Document technical designs and implementation details. **Required Skills, Qualifications and Experience:** - BA/BS in technical discipline. - 10 years of experience in middle-tier and database development. - Experience in applying SOLID principles and object-oriented design patterns. - Strong proficiency in C# and .NET (.NET Core/.NET 6+) and Web API. - Experience designing and building RESTful APIs and middle-tier services. - Experience with ORM frameworks (Entity Framework preferred, Dapper). - Strong SQL skills and experience with relational databases (Oracle preferred, SQL Server, PostgreSQL). - Experience writing and optimizing complex queries and stored procedures. - Strong understanding of data modeling and database design principles. - Experience with version control systems (TFVC and Git). - Strong problem-solving skills and attention to detail. - Must be a United States citizen with a DoD Secret clearance or ability to obtain a favorably adjudicated T3 investigation. **Preferred Qualifications:** - Experience with microservices architecture - Experience with CI/CD pipelines and DevOps best practices - Experience with cloud platforms (Azure preferred) - Experience with caching strategies (Redis, in-memory caching) - Experience with performance profiling and monitoring tools - Experience with containerization (Docker, Kubernetes) - Experience with automated testing frameworks **Work Environment and Physical Demand:** - Must be able to work for extended periods of time at a computer. Compensation: $115,000+ **At AGE Solutions, we reward performance, invest in growth, and share success.** Our benefits support the whole person, professionally, financially, and personally. - **26 Days Paid Leave:** Includes vacation, sick, personal time, and holidays. You choose how to use it. - **Performance Bonuses:** Performance bonuses are awarded based on individual contributions and company-wide results, aligning recognition with impact. - **401(k) with Match:** We match 3% of your contributions with immediate vesting. - **Financial Protection:** Company-paid life insurance up to $300K and options for additional coverage for you and your dependents. - **Health Benefits:** Multiple medical plans, dental, vision, FSA and HSA options to fit your needs. - **Parental Leave:** 15 days of fully paid leave for new parents, because family matters. - **Military Differential Pay:** We bridge the gap for employees on active duty, so they don’t take a financial hit while serving. - **Professional Growth:** Paid training and certifications, tuition reimbursement, and the tools and tech to get the job done right. - **Shared Success:** In the event of a company sale, our CEO has committed to returning 80% of net proceeds to employees. This ensures our team shares in the long term value they help create. **At AGE, you’ll do work that matters, supported by a company that delivers for its people.**