Programmer – Advanced (Application Developer II) - 26-02758

Position: Programmer – Advanced (Application Developer II)

Location: Columbia, South Carolina
Duration: 12 Months
Employment Type: Contract

Overview

Seeking a highly skilled Application Developer to support the modernization of a legacy Case Management System (CMS) into a scalable and maintainable .NET (C#) architecture. This role focuses on migrating business logic, data layers, and interfaces from a legacy model-driven environment into a modern, service-oriented architecture with RESTful APIs.

Key Responsibilities

1. Legacy System Analysis & Reverse Engineering

• Analyze legacy system models, generated code, and database structures

• Identify and document business rules, data flows, and system dependencies

• Translate legacy logic into maintainable .NET-based solutions

2. Application Modernization

• Design and develop .NET (C#) applications to replace legacy components

• Refactor systems into layered architecture (API, Services, Data Access)

• Apply modular and domain-driven design patterns

• Ensure compatibility during phased system migration

3. API Development & Integration

• Develop RESTful APIs for internal and external integrations

• Enable secure system integrations across enterprise platforms

• Implement authentication and authorization (JWT, OAuth2, RBAC)

• Manage API versioning, monitoring, and governance

4. Data Layer Transformation

• Modernize data access using Entity Framework and/or Dapper

• Work with SQL Server environments and multi-database systems

• Support data warehouse and reporting integrations

• Ensure data integrity, performance optimization, and auditability

5. Development & DevOps Practices

• Utilize Git-based version control and CI/CD pipelines

• Implement development standards, documentation, and testing strategies

• Support unit and integration testing

6. Incremental Migration Strategy

• Support phased modernization using strategies like Strangler Pattern

• Enable parallel system operations during migration

• Collaborate on prioritization of system modules

7. Stakeholder Collaboration

• Work with cross-functional teams to translate business requirements into technical solutions

• Collaborate with internal teams and external partners for system integration

Required Qualifications

• Bachelor’s degree in Computer Science, Information Systems, or related field (or equivalent experience)

• 3+ years of application development experience

• 3+ years of SQL Server / T-SQL experience

• 3+ years working with legacy or enterprise systems

• Strong debugging and troubleshooting skills

Preferred Qualifications

• Experience with legacy 4GL or model-driven environments (e.g., CA Plex)

• Experience with generated languages (C++, Java, or .NET)

• Knowledge of API integrations and data warehousing

• Experience with batch processing and transactional systems

• Familiarity with case lifecycle management and reporting metrics

For more details reach at resumes@navitassols.com