Mid-Tier Application and Database Developer

About this role

AGE Solutions seeks a mid-tier developer with 10+ years of C# and database expertise to design and maintain backend services and data-driven applications for government and defense clients. This hybrid Philadelphia role emphasizes SOLID principles, API development, and database optimization with a focus on scalable, secure systems.

What you'll do

• Develop middle-tier services and backend components using C# and .NET technologies
• Design and optimize relational databases, including stored procedures and complex queries
• Build RESTful APIs and business logic layers for enterprise applications
• Collaborate with front-end, architecture, and DevOps teams on integrated solutions
• Troubleshoot production issues and participate in code reviews and architectural discussions
• Document technical designs and implement performance optimization strategies

What they're looking for

• C# and .NET (.NET Core/.NET 6+)
• ASP.NET Web API and RESTful API design
• SQL and relational databases (Oracle, SQL Server, PostgreSQL)
• Entity Framework and ORM frameworks
• SOLID principles and object-oriented design patterns
• Database performance tuning and data modeling
• Version control (Git, TFVC)
• Microservices architecture

Benefits

• 26 days of paid leave (vacation, sick, personal, holidays)
• Performance bonuses tied to individual and company results
• 401(k) with 3% company match and immediate vesting
• Company-paid life insurance up to $300K plus dependent coverage options
• Multiple medical, dental, and vision plans with FSA/HSA options
• 15 days paid parental leave