SAP FIORI Developer

Job Description

The SAP Fiori Developer is a hands‑on technical role within AAON’s SAP Center of Excellence responsible for designing, developing, enhancing, and supporting SAP Fiori, SAPUI5, OData, ABAP, and S/4

HANA user experience solutions. This role supports AAON’s SAP transformation, stabilization, and continuous improvement roadmap by delivering intuitive, secure, scalable, and supportable SAP applications for manufacturing, supply chain, warehouse, finance, engineering, and business users. This position is not intended to be a pure coding role only. The individual will partner closely with SAP functional leads, business stakeholders, AMS providers, Basis/Security, integration teams, and architecture teams to understand requirements, translate them into technical solutions, and ensure solutions are built according to AAON’s SAP COE standards.

The ideal candidate has deep hands‑on Fiori/UI5 development experience, strong ABAP and OData knowledge, exposure to S/4

HANA extensibility patterns, and the ability to support both project delivery and production stabilization activities.

• Design, develop, enhance, and support custom SAP Fiori and SAPUI5 applications across AAON’s SAP landscape.
• Build role‑based applications using SAP Fiori design guidelines and SAPUI5 development standards.
• Develop responsive applications that improve usability for business users, power users, and operational teams.
• Customize and extend standard SAP Fiori applications where appropriate using SAP‑supported extensibility options.
• Support Fiori Launchpad configuration, catalogs, groups/spaces/pages, target mappings, and tile management in coordination with Basis/Security.
• Troubleshoot UI5 runtime issues, browser compatibility issues, authorization‑related launchpad issues, and performance bottlenecks.
• Ensure Fiori applications are scalable, maintainable, and aligned with AAON’s SAP technical architecture.

• Build, enhance, and maintain OData services using SAP Gateway and ABAP development techniques.
• Create and maintain service definitions, service implementations, and data models required for Fiori applications.
• Support integration between front‑end UI applications and S/4
  
  HANA backend processes.
• Develop and consume CDS views where applicable to support Fiori applications, analytics, and reporting needs.
• Troubleshoot end‑to‑end application issues across UI, OData, ABAP, authorizations, and backend configuration layers.
• Partner with integration teams when Fiori applications require interaction with external systems or middleware.

• Develop and support ABAP objects needed for Fiori applications, enhancements, reports, interfaces, conversions, forms, and workflow‑related solutions.
• Apply clean core principles and S/4
  
  HANA extensibility best practices where applicable.
• Support enhancement frameworks, BADIs, user exits, classes, function modules, and custom tables as needed.
• Review existing custom code and identify opportunities to simplify, retire, standardize, or modernize legacy development.
• Work with the Technical & Integration COE to maintain WRICEF inventory, technical specifications, and development standards.
• Perform code reviews and ensure quality, readability, performance, and supportability of custom objects.

• Work with SAP functional leads across RTR, QTI, FTP, EWM, PTP, MDG, and other areas to understand business process requirements.
• Participate in design sessions to evaluate whether requirements should be met through SAP standard, configuration, Fiori extension, workflow, report, form, or custom development.
• Translate functional specifications into technical designs with clear assumptions, dependencies, impacts, and testing needs.
• Ask clarifying questions to ensure development solves the real business problem rather than simply fulfilling a requested technical change.
• Partner with business users and functional analysts during testing and issue resolution.

• Support unit testing, system integration testing, regression testing, and user…