Middle-Tier Database Developer

Age Solutions; Philadelphia (Philadelphia County); Hybrid; USD 100,000 - 140,000; Full time

Benefits offered by this job

26 Days Paid Leave

Performance Bonuses

401(k) with Match

Health Benefits

Parental Leave

Military Differential Pay

Professional Growth

Shared Success

Job summary

AGE Solutions is seeking a Middle-Tier Database Developer to build and maintain robust middle-tier services and data-driven applications using C# and .NET, with Oracle databases and enterprise systems. You will design scalable backend components and APIs for critical business functions in a DoD/government-focused environment.

Ideal candidates have 5+ years of experience, strong SQL/PL-SQL skills, and a solid understanding of SOLID principles.

Qualifications

• US citizenship required.
• NACLC clearance required.
• Minimum 5 years related experience.
• Bachelor's degree.

Responsibilities

• Design, develop, and maintain middle-tier services and backend components using C# and .NET that interact with Oracle databases.
• Translate business requirements into scalable backend designs and solutions.
• Develop APIs, services, interfaces, and data-access components to support business needs.
• Build robust RESTful APIs and middleware for web apps and external interfaces.
• Implement efficient database interactions using Oracle SQL, PL/SQL, and stored procedures.
• Design, develop, optimize, and maintain Oracle-based databases handling complex data transactions such as EDI.
• Optimize performance, indexing, and query tuning.
• Apply SOLID principles and clean architecture in design.
• Troubleshoot production issues in application logic and data layers.
• Collaborate with cross-functional teams including frontend, database, business analysts, and infrastructure.
• Support CI/CD, deployments, and production operations.

Skills

C#

.NET

RESTful APIs

SQL

Oracle

PL/SQL

Entity Framework

Dapper

Azure DevOps

Git

Education

Bachelor's degree

Tools

Oracle SQL Editor

Toad

Visual Studio 2026

Azure DevOps Server 2022

Git

Docker

Kubernetes

Microsoft Azure

Job description

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 Solutions is looking for a Middle-Tier Database Developer, 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.

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.

Responsibilities Include:

• Design, develop, and maintain middle-tier services and backend components using C# and .NET technologies that interact with Oracle databases and enterprise systems.
• Translate business and functional requirements into scalable backend application designs and technical solutions.
• Develop application business logic, APIs, services, interfaces, and data-access components that support business requirements.
• Build robust RESTful APIs and business logic layers to support web applications and connectivity to external interfaces.
• Implement efficient application-to-database interactions using Oracle SQL, PL/SQL, stored procedures, and appropriate data-access frameworks.
• Design, develop, optimize, and maintain relational databases (Oracle preferred) that load, store, and transmit complex data transactions (e.g., EDI).
• Optimize database performance, indexing strategies, and query tuning
• Strong understanding of database design principles and SQL, and ability to navigate between database and client web page technology.
• Implement actionable database code using complex SQL, PL/SQL packages, procedures, functions, triggers, views, and other database objects.
• Apply SOLID principles and clean architecture practices in application design.
• Troubleshoot and resolve production issues related to application logic and data layers
• Contribute to architectural decisions and technical design discussions
• Troubleshoot application, integration, database connectivity, performance, and production issues across the application stack.
• Collaborate with frontend developers, Oracle database developers, business analysts, testers, architects, and infrastructure teams to solve critical business issues.
• Support automated testing, CI/CD pipelines, application deployments, releases, and production operations.
• Primary duty (50%) involves applying systems analysis techniques and designing/developing/testing software/services and databases to meet user/system specifications.

Required Skills, Qualifications and Experience:

• Citizenship and Clearance:
  • Must be a US citizen.
  • Must be able to achieve a NACLC clearance.
• Experience:
  • Minimum 5 years related experience.
• Education:
  • Bachelor's degree
• Certifications:
  • DoD IAT Level II Certification, such as CompTIA Security+CE or equivalent
• Skills and Knowledge:
  • Languages and Frameworks: C#, JavaScript, .NET MVC, Angular
  • Database: Oracle (PL-SQL), Toad SQL Editor
  • Version Control: Azure DevOps Server 2022, Visual Studio 2026
  • Additional Technologies: Git, Docker, Kubernetes, Microsoft Azure.
  • Experience applying SOLID principles and object-oriented design patterns
  • Strong proficiency in C# and .NET (.NET Core/.NET 6+) and ASP.NET 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
• Location:
  • Hybrid Work Environment: Requires on-site work at the client facility in Northeast Philadelphia, PA, each Wednesday.
    • Candidates should be aware that the Government may increase the on-site requirement in the future.

Preferred Qualifications:

• Experience with Electronic Data Interchange (EDI) is a plus.
• Exposure to version control systems like TFS, Visual Studio, Git.
• Prior experience in a DoD or government contracting environment.
• Military Medical Supply Chain experience is a big plus.
• Experience with at least several of the areas below or similar technologies:
  • CI/CD concepts or tools (e.g., Azure DevOps, Jenkins)
  • DevOps services using infrastructure as a service provider (e.g., Microsoft Azure)
  • Containerization technologies (e.g., Docker, Kubernetes)
  • Version Control and Collaboration (Git/GitHub/GitLab)
  • Configuration management tools (e.g., TFS, Jira)
  • Static code analysis tools (SonarQube, Fortify)

Work Environment:

• Professional office and technical environment supporting mission-critical DoD medical logistics applications and enterprise systems.
• Work involves extensive use of computers, software-development environments, database tools, collaboration platforms, and standard office equipment.
• Requires regular collaboration with Government personnel, developers, database specialists, business analysts, testers, architects, and infrastructure teams.
• May require occasional work outside normal business hours to support deployments, releases, production incidents, maintenance, or other mission-critical activities.
• Requires compliance with applicable Government facility, security, cybersecurity, and system-access requirements.

Physical Demands:

• Primarily sedentary work involving extended periods of sitting and computer use.
• Requires frequent use of a keyboard, mouse, telephone, and other standard office and computer equipment.
• Requires the ability to communicate effectively with customers, team members, and technical stakeholders in person and through virtual collaboration tools.
• Occasionally requires standing, walking, bending, reaching, and moving throughout an office or client facility.
• Must be able to perform the essential functions of the position with or without reasonable accommodation.

The projected salary range for this position is $100,000+ annually. Final compensation will be determined based on factors including years of relevant experience, active security clearance level, certifications, technical skillset, contract requirements, and overall qualifications.

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.