PowerBuilder Developer (C++/C#/PowerBuilder) in Columbia, MD

Position Title: PowerBuilder Developer (C++/C#/PowerBuilder)
Location: Columbia, MD – Day 1 Onsite

Duration of Contract: 6 Months

Experience Level: 5-10 years

Justification:

The client is looking for a developer who can support and upgrade old software built in PowerBuilder, which is still used in their transit operations.

You should have strong experience with both old and newer versions of PowerBuilder to fix bugs and add features.

They also need someone who can help modernize these systems by rewriting parts in C++ or C#.

You should be comfortable with –
Writing SQL queries (Oracle, SQL Server, or Sybase)
Working with APIs and backend logic
Fixing performance and system issues
Experience in transit or public sector is strongly plus (transit data standards such as GTFS, AVL/CAD, APC (Automated Passenger Counters), and AVA systems)
 

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 of 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.