SAP ABAP Developer / Programmer

Expleo•Milwaukee, WI

2d•Remote

About The Position

This is a hands-on senior SAP ABAP Developer role ideal for someone who understands payroll calculations, CATS, and end-to-end HR process flows, and who can bridge the gap between project-based work and ongoing internal support. The developer will collaborate closely with functional consultants, business analysts, and frontend developers to deliver scalable, high-quality SAP solutions within a critical HR & Payroll environment. The role offers senior-level technical ownership, fully remote flexibility within the U.S., and meaningful business impact by supporting critical HR and Payroll processes.

Requirements

7–10+ years of hands-on SAP ABAP development experience
Strong expertise in object-oriented ABAP development
Solid understanding of SAP HR and Payroll processes, including payroll calculations
Experience working with CATS (Cross-Application Time Sheet)
Hands-on experience developing and supporting OData services
Proven ability to work in complex SAP landscapes and enterprise environments
Strong communication skills and ability to work cross-functionally

Nice To Haves

Prior experience supporting SAP HR Payroll implementations or enhancements
Exposure to SAP Fiori / UI5 integrations
Experience balancing project work with production support responsibilities
Background working in large, matrixed organizations
SAP certifications

Responsibilities

Collaborate with functional consultants, business analysts, and end users to gather and translate business requirements into technical solutions
Design, develop, and enhance custom ABAP reports, function modules, BAPIs, classes, and other ABAP objects
Develop and maintain OData services using SAP Gateway and/or ABAP CDS views to expose backend data for SAP Fiori and other frontend applications
Implement CRUD operations within OData services, ensuring business logic aligns with HR and Payroll requirements
Define and structure OData metadata, including entities, associations, and navigation properties
Perform unit testing and validate ABAP programs and OData services across multiple scenarios
Troubleshoot and resolve issues using tools such as ABAP Debugger, ST22 dumps, and SAP Gateway logs
Analyze and optimize ABAP code for performance, particularly for payroll and large-volume data processing
Partner with SAP Fiori/UI5 developers to ensure seamless backend-to-frontend integration
Maintain thorough technical documentation covering data flow, logic, and specifications
Act as a bridge between project delivery and internal SAP support, ensuring continuity and stability