I do SAP data migration
About
I connect two sides that rarely meet: communicating with business units and vendors, and the detailed work in data models and interfaces. What drives me most is curiosity: I learn because I want to understand how things work.
My path wasn't a straight one: secondary modern school, then my Abitur as an IT assistant, a dual degree in business informatics, and now a part-time Master's in Applied AI. I've been at Walterscheid since 2018. Before the acquisition by Comer Industries, almost every site ran its own ERP. In four migrations across Germany and the US we brought them onto one shared SAP system, the foundation for the next step towards S/4HANA. In a team of two, I run the application landscape at our Lohmar site, from goods receipt to shipping.
My goal: bring together ERP depth, shop-floor know-how and AI. My AI-assisted knowledge base shows what that looks like day to day: with it, a machine integration took two days instead of four weeks.
Work Experience
WalterscheidJan 2023 – PresentIT Project Manager & IT Application Manager
Before the acquisition by Comer Industries, the sites ran on different ERP systems. In four migration projects (Sohland, Lohmar, Woodridge/US and a finance rollout across Germany and the US) I helped bring them onto one shared SAP system, laying the groundwork for the group-wide S/4HANA transition. For me, “projects” means mid-size delivery projects for manufacturing that I build myself, not classic project management. Alongside that, application management in a team of two for the Lohmar site (approx. 700 employees): 36 interfaces along the manufacturing chain, from SAP R/3 to high-bay and small-parts warehouses, laser cutters, shop-floor data collection, quality management, time tracking and access control. Built an AI-assisted knowledge base for the application landscape on my own initiative.
WalterscheidSep 2021 – Dec 2022IT Application Administrator
Moved straight from the dual degree into operational responsibility: running production and logistics applications, user support and training. From 04/2022, took the first SAP migration (Sohland site) in-house after it had been planned for an external partner.
WalterscheidOct 2018 – Sep 2021Dual Student, Business Informatics
Practical phases in IT application support: requirements analysis, user support and documentation across production, logistics and administration.
Education
Skills
A machine integration in 2 days
Instead of maintaining docs by hand, the knowledge base keeps itself up to date. That way Claude knows every table, every procedure and every interface, and we build new integrations together.
What I'm working on
From ERP harmonization across a group to an AI-assisted knowledge base: the projects that shaped me most.
~9M records · main site, most complex project
ERP Harmonization: Four Projects, One SAP
Before the acquisition by Comer Industries, almost every site ran its own ERP. Four migration projects from the legacy ERP FourthShift (Infor) to SAP R/3: the Sohland, Lohmar and Woodridge (US) sites plus a finance rollout across Germany and the US. Together around 14M master and transactional records across 25 objects in MM, PP, SD and WM/LE. The shared SAP system is now the foundation for moving to S/4HANA along the SAP roadmap. Along the way, an in-house framework emerged with object, field and knowledge mappings, governance, risk tracking and management-ready reporting.
AI-Assisted Knowledge Base for the Application Landscape
Moving from hand-maintained documentation to a system that keeps itself up to date: a daily mirror copies every database definition (DDL) into a versioned knowledge base, structured per application and readable by LLMs. On top of it, I build things like new interfaces together with Claude. Result: a machine integration was done in 2 days instead of about 4 weeks.
S/4HANA Conversion: Custom T-Code Analysis
Ahead of the move from R/3 to S/4HANA, I analyze which custom transaction codes (e.g. in customizing) have barely been used in recent months. The resulting delta table tells us what really needs an S/4-compatible rebuild, because every external conversion costs money.
SAP ↔ Shop Floor Interfaces
36 inbound and outbound interfaces between SAP and the high-bay warehouse, small-parts warehouse, saw shop, laser cutters and shop-floor data collection, with machine integrations built in T-SQL. During the migrations, bidirectional in-house interfaces kept both ERP systems postable while they ran in parallel.
Bachelor's Thesis: Data Quality Metrics
Measurable KPIs for assessing enterprise data quality, including a case study on incident data from NetCologne. My first step towards data and AI (grade 2.0).
What defines me at work
I translate between manufacturing and SAP
I enjoy reaching out to people and know the ERP landscape in detail. In the SAP projects, I could align manufacturing's requirements directly with the SAP consultants. That made the migration into the Comer template much easier.
Curiosity beats routine
I learn because I want to understand things, not for a certificate. That's how an idea turned into the AI-assisted knowledge base that now turns weeks into days.
Structure, so ideas can hold
I have plenty of ideas, so I rely on clear rules: mappings, status, risks. Over four migrations, that turned into a framework that made every following project faster.
Sort things out calmly, bring people along
Cutover weekend, patchy legacy docs, time pressure: first I calmly sort out what really matters, then I bring the team along. No blame game, just getting things done. What matters is that production keeps running.
How I recharge
Running and the gym keep my head clear. Wachswandel and Treffix are my playground for my own ideas.
Wachswandel
Social enterprise from Weilerswist, Germany
Old candle leftovers become new candles, and part of every sale goes to local initiatives. I'm building the IT behind it: app, website and processes.
Treffix
Our own app, which I'm building with two friends: from idea to code. Currently in TestFlight beta.
Running
Generali Cologne Marathon
My first half marathon in 2025, the second in 2026. The full distance is next.
Gym
XTRAFIT
My fixed counterbalance to the desk.
Exchange semester
Istanbul
A semester at Yeditepe University: new city, new language, grade 1.0.
Get in Touch
Up for a chat about SAP data migration, manufacturing IT or AI in application management? Just message me on LinkedIn.