PowerBuilder Developer Legacy Modernization (C++/C#) | Columbia, MD | Hybrid | 6-Month Contract

Position Title: PowerBuilder Developer (C++/C#/PowerBuilder)
Columbia, MD - Hybrid

6 Months contract

Job Responsibilities:

• Maintain, enhance, and support existing PowerBuilder applications that are critical to transit agency operations.
• Analyze, troubleshoot, and resolve application defects and performance issues in legacy systems.
• Collaborate with business analysts, end users, and cross-functional teams to gather requirements, define specifications, and implement solutions.
• Support system modernization efforts by rewriting, refactoring, or integrating legacy PowerBuilder code into modern platforms using C++, C#, and other contemporary technologies.
• Develop and maintain backend logic, APIs, and interfaces to support business workflows, reporting, and integration with other enterprise systems.
• Perform code reviews, unit testing, and integration testing to ensure code quality, stability, and maintainability.
• Document system architecture, design decisions, and technical specifications for both legacy and modernized systems.
• Support data migration, conversion, and synchronization activities during system transitions.

Technical Skills & Qualifications:

• Bachelor s degree in Computer Science, Information Systems, Software Engineering, or related field (Master s preferred).
• 5-10 years of hands-on experience developing and maintaining applications in PowerBuilder (versions 9.x through 2019 R3 or later).
• Strong proficiency in C++ and C# with experience migrating legacy systems to modern architectures.
• Solid understanding of client-server application development, database interaction, and backend business logic implementation.
• Extensive experience working with relational databases (e.g., Oracle, SQL Server, Sybase), including SQL development, stored procedures, and performance tuning.
• Familiarity with object-oriented design principles, software development life cycle (SDLC), and Agile methodologies.
• Experience developing and consuming web services (REST, SOAP) and integrating with third-party APIs.
• Strong problem-solving, debugging, and analytical skills with the ability to diagnose complex system issues.
• Excellent written and verbal communication skills with the ability to interact effectively with both technical and non-technical stakeholders.
• Experience supporting mission-critical enterprise applications in a public sector or transportation environment is highly desirable.
• Familiarity with version control systems (e.g., Git, TFS) and CI/CD pipelines is a plus.