Sivaganesh Krishnan

SAP Fiori/UI5 & ABAP Developer | AI Workflow Automation Specialist

• Led end-to-end implementation, development, deployment, and support of SAP Fiori/UI5 applications in S/4HANA (1610–2023), including hosting and extending standard apps on SAP BTP and Fiori Launchpad.
• Developed and integrated custom Fiori plugins, KPI dashboards, and Fiori elements using CDS annotations and the RESTful Programming Model.
• Enabled live vendor onboarding and purchase requisition workflows via SAP Build Work Zone; integrated Uperform and Workday with Fiori Launchpad for enhanced user experience.
• Served as Fiori Administrator, managing Launchpad app activation, configuration, and support, including custom catalogs, groups, and handheld device integration for inventory management.
• Designed and developed complex ABAP/ODATA backend components and outbound interfaces for high-volume clients (50,000+ daily users), including delivery split and reconciliation programs.
• Implemented advanced ODATA and ABAP features: BADI extensions, AMDP, CDS views, BRF+, BOPF, parallel processing (SPTA), and performance optimization using ST12 and AMDP Utils.
• Collaborated cross-functionally to resolve authorization, configuration, and integration issues; ensured code quality and maintainability using modularized techniques and GitHub versioning.

LLM Fine-Tuning & Agentic Workflow Automation for SAP Process Intelligence (Jan 2025 – Present)

• Developed enterprise-grade LLM solutions using Hugging Face PEFT, Unsloth, and SFT/DPO trainers for domain-specific model fine-tuning; managed dataset transformation to ChatML and model conversion to GGUF for efficient local inference (llama.cpp, Ollama).
• Built agentic workflows for SAP process automation with LangChain, LangGraph, and LangSmith, leveraging RAG retrieval and structured orchestration; engineered a custom Model Context Protocol (MCP) server for advanced file content search.
• Utilized a modern tech stack: Python, JavaScript, Transformers, PyTorch, Numpy, Pandas, LlamaIndex, Instructor, Outlines, and Cursor/Copilot; tracked experiments with WandB, deployed agents on AWS/GCP, and followed CI/CD best practices on Linux-based systems.

Key Skills:
SAP Fiori/UI5, SAP BTP, S/4HANA, ABAP, ODATA, CDS, AMDP, BRF+, BOPF, GitHub, Performance Optimization, Inventory & Warehouse Management, LLM Fine-Tuning, Agentic Workflows, Python, Hugging Face, LangChain, Cloud Deployment (AWS/GCP), CI/CD

• Delivered end-to-end SAP Fiori/UI5 solutions for Plant Maintenance, including app development, launchpad configuration, and post-implementation support.
• Developed analytical and transactional UI5 applications integrated with HANA XS, leveraging OData services and custom views for real-time business insights.
• Customized SAP Screen Personas to streamline retail processes, automate transactions, and enhance user experience through scripting and dashboard creation.
• Engineered seamless integration between SAP and Amazon Web Store, automating material, pricing, and order data exchange using ABAP, BADIs, and OData.
• Designed and enhanced ABAP reports, forms, and interfaces for finance, material management, and sales; implemented custom enhancements and troubleshooting for core SAP modules.

Key Skills: SAP Fiori/UI5, HANA XS, OData, SAP Screen Personas, ABAP, Integration, Analytics, SAP FI/MM/SD