Software Developer Applications - Senior

GBS Solutions Corporation () is an SBA 8(a)-certified, small, disadvantaged business founded in 2014 to deliver high quality, innovative business and technical solutions. GBS has a reputation for outstanding leadership, customer and employee care, and innovation. We take pride in providing highly trained professionals with in-depth expertise in many technical areas as well as professional and administrative services.

GBS offers Medical, Dental, Vision, 401k and 401k Match, STD, LTD, Life Insurance with Accidental Death and Dismemberment, Voluntary Life Insurance with Accidental Death and Dismemberment, and Paid Time Off.

GBS is seeking a Software Developer Applications - Senior team member to support designs, develops, enhances, and maintains new and existing client's applications that support mission-critical HR and payroll functions such as FPPS, NextFPPS, Quicktime, and WebTA. Developers work across mainframe, web, and database environments-using approved client's technologies such as Natural, SQL, Java, JavaScript, and JCL-to ensure system functionality, reliability, and compliance with client's quality and security standards.

The federal clients (FPPS) is a custom-built, mission-critical legacy application developed and maintained in-house using Software AG's Natural and ADABAS technologies on an IBM z / OS mainframe . It comprises more than 4.5 million lines of Natural code and supports payroll and personnel processing for numerous federal agencies. The environment prioritizes stability, data integrity, compliance, and secure change control over rapid modernization. All developments follow disciplined mainframe O&M practices with tightly controlled code promotion, structured testing using JCL and batch jobs, and formal production turnover procedures. Modernization occurs only at the periphery-through web interfaces, reporting tools, and selective integration with systems such as ServiceNow, LifeRay, and TomEE -while the core mission remains sustained, reliable mainframe operations.

Candidates must demonstrate extensive experience developing, maintaining, and enhancing Software AG Natural and ADABAS applications on IBM z / OS . They should have strong skills in Natural programming, ADABAS data structures, JCL , and batch processing, with proven ability to analyze, code, test, and implement changes within strict mainframe change-control environments. Experience supporting large, homegrown federal systems such as FPPS-or similar payroll, HR, or financial systems-is essential, with emphasis on data integrity, regression testing, documentation, and secure code promotion.

Job Functions

• Design, develop, and maintain application components across mainframe, web, and database platforms.
• Implement the full software development life cycle including requirements, design, coding, integration, testing, and deployment.
• Translate functional and technical requirements into detailed designs and participate in design and code reviews.
• Write and maintain code in Natural, SQL, Java, JavaScript, and / or JCL, following IBC programming and configuration-management standards.
• Create web-enabled modules and interfaces using approved frameworks such as AJAX, LifeRay, Tomcat / TomEE.
• Conduct unit, integration, and regression testing; collaborate with QA staff to validate functionality and performance.
• Support modernization and migration of Natural / ADABAS applications to open-system platforms.
• Debug, optimize, and document code; maintain traceability of changes through IBC's change-management process.
• Ensure all deliverables meet DOI / IBC requirements for security, privacy, and Section 508 accessibility.
• Collaborate with database administrators, system analysts, and project managers to ensure consistency of design and data flow.
• Work within Agile, SAFe, or traditional project-management methodologies as directed by IBC.

Experience Requirements

Skills and Abilities

Education / Certification Requirements

A background check will be required.