József Szikszai - Interim ABAP-OO Developer

Beilstein, Germany

Experience

Apr 2024 - Mar 2025

1 year

Jegenstorf, Switzerland

Interim ABAP-OO Developer

Interdiscount

Interim ABAP-OO developer in S/4 HANA migration
Automation of retail pricing (IS-Retail)
RFC interface between POS system and S/4 (SD)
RFC interface between S/4 and R/3 for price comparison (SD)
Automatic creation and allocation of price conditions (SD)
Automation of setting the default vendor in the info record (MM/SD)

Mar 2021 - Present

4 years 5 months

Berlin, Germany

Interim ABAP-OO Developer

Fleurop AG

Interim ABAP-OO developer in ongoing projects
New features/bug fixes in SD/MM/FI/CO and custom modules
Digitalization of customer service (automatic email to customer/delivery partner)
Adobe/SmartForms/SAPScript form development (invoice, order, billing)
Interface development (HTTPS calls, web services and RFC function modules)
Preparation for S/4 HANA migration (business partners, custom code conversion)

Jun 2020 - Sep 2020

4 months

Hanau, Germany

Interim ABAP-OO Developer

Heraeus Holding

Interim ABAP-OO developer in ongoing projects
Development in SD/MM/FI/CO and custom modules
New build/refactoring of processes using ABAP-OO

Feb 2020 - Apr 2020

3 months

Stuttgart, Germany

ABAP-OO Developer

Daimler AG

S/4 HANA implementation project
Various developments in FI (Management Information Framework)
Data modeling using CDS Views, mapping with AIF
IDoc interfaces between R/3 and S/4 for FI postings (BKPF/BSEG <=> ACDOCA)
(Project was canceled due to COVID.)

Jun 2018 - Dec 2020

1 year 7 months

Heidelberg, Germany

ABAP-OO Developer

HeidelbergCement AG

SAP implementation (USA) and support (Europe, Asia)
Various developments in SD, MM, LE, FI, CO
Reports (ALV-OO in SD, MM and FI)
File-based interfaces between SAP and non-SAP (FI, CO)
Posting programs (FI, CO, COPA)
User-exit developments (SD order, pricing, MM email on purchase)
SAPScript/Smart Forms/Adobe form development (SD, LE, FI)

Jan 2018 - Apr 2018

4 months

Hamburg, Germany

ABAP-OO Developer

Tom Tailor Group

SAP implementation project (SD, MM, LE, IS-Retail, FMS, FI, CO)
Various developments in SD, MM, LE, IS-Retail and FMS
User-exit developments (copy routine, invoice creation)
IDoc development (transport, LE)
Message types for transports (sending Excel sheets to customers via email)

May 2017 - Dec 2017

8 months

Walldorf, Germany

ABAP-OO Developer

SAP SE

Holistic Tax Research project (time-dependent tax codes and external tax calculation for S/4HANA)
Built proof of concept (time-dependent taxes)
OO design and development, data modeling using CDS Views
Customizing SD, MM, FI (conditions, pricing, tax codes)
Adjustment of transaction FTXP for time-dependent tax codes
Migration programs for old tax codes and postings (A003, ACDOCA)

Jun 2015 - Apr 2017

1 year 11 months

Hanover, Germany

ABAP-OO Developer / Subproject Lead

TUI

SAP implementation project UK (FI, CO, MM, SD, SRM)
Various developments in FI, CO, MM, SD
Reports (ALV-OO in FI, MM, SD)
Enhancements (FI, MM – BAdI, BTE)
Interfaces (MM, SRM – XML, web services, RFC)
Form development (SD invoice in Smart Forms, check in SAPScript)
Batch input programming (postings in FI, billing plan in SD)
Subproject lead (coaching/managing offshore development team)

Jul 2007 - Feb 2015

7 years 8 months

Neckarsulm, Germany

ABAP-OO Developer

Lidl Stiftung

Reports (HCM, FI, CO, AM)
Dialog program for selling retired assets (SD order and invoice)
Call transaction/batch input programming (HCM, FI, AM)
Interface development using web services, BAPI, IDoc (FI)
Form development (SAPScript, Adobe in HCM, LSO, FI)
User exits (HCM, FI, AM, LSO)
Dialog programming (MVC in HCM and FI)
Optimization/adjustment of legacy programs (HCM, FI, AM)
Development of Web Dynpro interfaces (LSO)
Technical documentation, developer testing, code reviews
FI-AM implementation projects (Germany, France, Greece, Cyprus)
Dialog programming (custom quick-entry screens)
Development of complex reports for accounting
HCM implementation projects (Greece, Bulgaria, Romania, Belgium)
Dialog programming (custom quick-entry screens)
Form development (SAPScript, Adobe)
LSO implementation projects (Stiftung, Germany, Netherlands, France)
Form development (Adobe, Smart Forms)
Adjustment of standard SAP logic using BAdIs and user exits
Logistics implementation project (Austria)
Form development for delivery notes (Adobe in LE and MM)
Interface development (MM, SD master data with IDoc)

Sep 2005 - Jun 2007

1 year 10 months

Hungary

Senior SAP Consultant / ABAP Developer

Capgemini

OMV Austria SAP harmonization and upgrade (Jan 2006 – Apr 2007)
Various developments (FI, CO, MM, SD, PM)
SAPScript form development (SD invoice and FI dunning in SAPScript)
User-exit/screen-exit development (PM)
ALV report development (MM, SD)
Call transaction development (MM, CO)
Le Belier Hungary SAP rollout (FI, CO) (Sep 2005 – Dec 2005)
Customizing of FI module (G/L, A/P, A/R)
ABAP development (user exits, bank interface)

Jul 2002 - Aug 2005

3 years 2 months

Hungary

Senior SAP Consultant (in-house)

Sanofi-Aventis

Business unit accounting (2002)
Customizing of FI module (business units)
Managing ABAP developments (subproject lead)
Upgrade project (2004)
Key user team manager (subproject lead)
Testing manager (subproject lead)
Implementation of new concepts in SAP
SAP configuration (FI, AM, CO)
ALV reports (FI, AM, CO)
Batch input/call transaction development
BAPI development (interfaces to external workflow system)

Jan 2002 - May 2002

5 months

Norway

SAP Consultant

Xerox

Norway implementation project (FI-AM)
Customizing (FI, AM)
Uploading of legacy asset master data

Sep 2001 - Dec 2002

4 months

SAP Consultant

Xerox

Eastern Europe and Ireland support project (FI-AM)
SAP customizing (FI, AM)

Jul 2001 - Aug 2001

2 months

Hungary

SAP Consultant

Europapier Hungary

Reimplementation project (FI-AM)
Customizing (FI, AM)
ABAP development (open item aging, batch input, data correction in SD)

Jan 1998 - Jun 2001

2 years 6 months

Hungary

SAP Consultant (in-house)

Masterfoods

First level SAP support (10 countries, 500+ users)
Customizing (FI, AM, CO)

Summary

25+ years of experience as an ABAP/ABAP-OO (since 2006) developer and SAP consultant (FI, AM – 1999–2006)
Development experience in FI, AM, CO, PS, HCM, MM, SD, LE, TM, IS-Retail, FMS, AIF and S4/HANA
Performance-optimized programming, UML, OO design patterns, SOLID, Clean Code
Code reviews, unit testing, test-driven development, agile methods, Scrum
Consulting experience in FI, AM and CO (customizing and process knowledge)