Gregor Huyskens

SAP ABAP Developer

Frankfurt, DE





Trouble Shooting, Support


System Integration


SD, MM, Logistics Processes






Project Experience

Integration of an Output Management Solution
Jul 2017 - Current
E.ON BS GmbH, Hannover

Utillity companies like E.ON need to optimize not only standard documents but also individual communication for customer service.
In 2008 E.ON had started to develop a system based on SAP CRM and Adobe's Document Server and forms editor.
Now these editor tools are replaced by a new system and we support redesign of web services and small UI changes for the new integration.

SAP CRM 7, ABAP OO, Webservices, GMC Inspire, XML
ABAP Custom-Code-Adaptation for HANA Upgrades
Jun 2017
fileon UG / Atotech, Berlin (Deutschland)

In 2018 Atotech plans to replace their SAP systems database with HANA DB.
The preparation of this step required compliance checks for about 4.000 custom program sources.
A two weeks workshop turned out a code parser and workbench supporting manual and semi automatic code upgrades. Manual efforts could be reduced by 50%.
ABAP on HANA, Training der Entwickler , Netweaver 7.4

Development of a Mobile Application
Mar - Jun 2017
fileon UG / CCS Cargo City Süd GmbH, Frankfurt

Use of smart phones shows large potential in transport logistics since GPS, scan and photo features help to secure and accelerate handling for driver and customer.
Objective of our development for the airfreight carrier "CCS Cargo City Sued GmbH" is the renovation and mainly new development of an ERP integrated solution including verification of personnel, load tracking, bar code identification of partners, packages and vehicles.
Platform of choice is Odoo 10.0 , the ionic framework and web2py for a scaleable restful API.
Tasks were design and implementation.
Odoo, OpenERP, python, ionicframework, Android, web2py Logistics Process, Im- and Export, Airfreight

Testintegration of SAPUI5 and web2py
Jan - Feb 2017
fileon UG

Two leading mature open source frameworks were not yet integrated in any documented way.
web2py is a stable python based web server with an excellend DAL (Data Access Layer) - an equivalent to SAP's OpenSQL in ABAP.
Python as one of the strongest server based languages allows use of large secure libraries on all major OS platforms.
Goals of the project are to build:
1) .. an interactive modeller for backend models
2) .. a generic maintenance app for associated entities
3) .. an application designer with a new event handler manager
After POC the prototype could be deployed on HANA DB with an extension of py-dal for this new DB. web2py's DAL opens access to several (About 18) database types.

SAP ABAP Developer
Jun - Sep 2016
nearcons SAS, Taranto (Italy)
Prysmian Group: High Tech Industry
Prysmian Group: High Tech Industry - International Supplier Support of HANA upgrade project
Trainer for ABAP Developers: HANA Upgrades: "Requirements and new ABAP features" Development of a central "Drums Replenishment Cockpit" with weekly analysis and direct order creation feature.
Development of a report for "Print and EDI message Repetition".
Trainer "ABAP auf HANA Plattformen", Reports mit ALV, NAST

SAP ABAP Developer
Feb - Apr 2016
Quanta SpA, Rom (Italien)

Poste Italiane - Rome, Italy
CRM 7 Backend Integrations
- Web Service Class extensions of messages with authentication parameters
- Order Export to legacy (partner) system in flat file and xml formats
- Development of fast order statics for custom front end overview screens
SAP CRM 7, Reporting, ABAP OO, Web Services
SAP ABAP Developer
Mai - Dez 2015
WIPRO Ltd, India, SAP SE, Walldorf

1) Development of a "Fiori like" Application for S4 HANA
A work list for supplier evaluation was required replacing older POWL lists. In the new S/4 environment all BSP applications are replaced.

CDS Views were developed and optimized. Annotations with metadata helped to render list views generated dynamically by a new template class
OData-Services were extended.

2) Extension of MM-PUR Standard Functions
New legislation regarding incoterms required code extensions down to release ECC 7.3. Dialogs, Reports und IDOC Functions had to be updated to cater for versioned attributes.


University Hamburg

Masters Degree in Physics

Thesis about analytical optics - Simuation of Single Mode Fibres