Maximilian
Wittmann
SAP HCM Consultant | Full Stack Developer
ABAP OO · SAP UI5 · Fiori · SuccessFactors People Analytics
6+ years of expertise in SAP HCM development and HR process digitalization. Bridging business and IT with modern full-stack solutions.
About Me
I am a SAP HCM Consultant and Developer with more than 6 years of project experience in ABAP OO, SAP UI5, and OData Services, as well as 4 years in SAP SuccessFactors People Analytics.
My focus is on HR data, reporting, and process digitalization in complex S/4HANA environments. I combine strong SAP expertise with modern full-stack skills (React.js, Node.js, Next.js) and proven experience in subproject leadership.
I work structured, solution-oriented, and enjoy bridging the gap between business requirements and IT implementation.
My Services
Comprehensive SAP HCM consulting and full-stack development services tailored to your business needs
SAP ABAP OO Development
Custom ABAP OO programming for business logic, data models, and process automation in HCM environments. Clean code principles and performance optimization.
SAP UI5 / Fiori Development
Full-cycle development of modern Fiori applications and custom SAP UI5 solutions. Responsive design and seamless integration with SAP BTP.
SuccessFactors People Analytics
Design and implementation of HR dashboards, KPI reporting solutions, and data models for Employee Central, Learning, Performance & Recruiting.
HR Process Digitalization
End-to-end digitalization of HR processes including training management, personnel administration, and workflow automation in S/4HANA.
SAP BW & Analytics Cloud
Development of BW extractors, InfoObjects, transformations, and SAC dashboards for comprehensive HR reporting and analytics.
Full Stack Web Development
Modern web applications using React, Next.js, Node.js, and TypeScript. From concept to deployment with focus on scalability and user experience.
Ready to start your project?
Let's Work TogetherProject Experience
Selected projects showcasing my expertise in SAP HCM development and full-stack solutions
soulhelper
Healthcare / Digital Health
Freelance Full-Stack Developer
Design and development of a video therapy platform for the DACH market
- Frontend with Next.js, React, shadcn/ui
- Backend development in PHP
- End-to-end responsibility from concept to go-live
- Focus on scalability, security, and responsive design
Leading Automotive Manufacturer
Automotive
SAP ABAP OO & SAP UI5 Development
Full-cycle development of custom Fiori applications for HCM Digital Training Management
- Custom SAP UI5/Fiori applications for HR processes
- ABAP OO backend programming and process automation
- OData services for HCM master data integration
- Deployment on SAP BTP with cloud integration
- Application of Clean ABAP principles and code reviews
Automotive Supplier
Automotive
SAP SuccessFactors People Analytics
Introduction and rollout of People Analytics Stories across multiple modules
- Rollout across Employee Central, Learning, Performance, Recruiting
- Definition of HR KPIs and data models
- Enhancement of Personnel Administration processes
- Stakeholder management between HR and IT
Premium Automotive Company
Automotive
SAP BW & SAP Analytics Cloud
Backend development for HR Data Warehousing and Analytics
- Design of BW extractors, InfoObjects, transformations
- Custom ABAP interfaces for HR data integration
- Optimization of queries and reporting structures
- Performance tuning and ABAP debugging
Energy Sector Company
Energy
SAP SuccessFactors People Analytics - Subproject Lead
Subproject leadership for People Analytics implementation
- Design of dashboards for Employee Central, Learning, Performance
- Gathering PA requirements from HR departments
- KPI definition and data modeling
- Subproject leadership and stakeholder management
Professional Journey
- • SAP HCM & SuccessFactors People Analytics
- • Subproject leadership & stakeholder management
- • SAP ABAP OO & UI5 development
- • SAP development with ABAP OO & UI5
- • SAP HCM solutions implementation
- • Dashboard & KPI reporting
Technical Competencies
Comprehensive skill set spanning SAP technologies and modern web development
Expert Knowledge
Advanced Knowledge
Working Knowledge
Professional Skills & Certifications
Project Leadership
Subproject management and cross-functional team coordination
Stakeholder Management
Requirements engineering and business-IT alignment
Solution Architecture
System integration and technical design
Quality Assurance
Clean code principles and code reviews
Get In Touch
Let's discuss your project and how I can help you achieve your goals
Contact Information
I'm available for freelance projects and consulting. Feel free to reach out for collaborations or just a friendly chat.
100% availability | Remote preferred, on-site by arrangement