Haydar Velioglu
Senior SAP Migration Expert
Experience
Nov 2024 - Feb 2025
4 monthsGermany
Senior SAP Migration Expert
Cewe Group
- SAP migration expert with both direct approach from ERP and staging tables
- LTMOM, Fiori Migration App
- Debugging and enhancing standard migration objects
- Custom migration objects and custom mappings
- Selection BADI and skip rule implementations
- Development for large-scale data loads
- Consistency checks of objects with reporting of results and errors
- Data migration from ECC SAP to S4HANA
Sep 2022 - May 2023
9 monthsGermany
Senior SAP Developer
50Hertz Transmission GmbH
- SAP development consultant for oneSAP project of 50Hertz Transmission GmbH (Germany) and Elia Group (Belgium)
- SAP ABAP, S/4 HANA, EAM, PM, logistics, DMS, materials management, bundling
May 2022 - Sep 2022
5 monthsTurkey
Senior SAP Developer and Migration Consultant
Rönesans Holding
- SAP development for SD, PM, MM
- Migration consultant for PM data migration with DMC and LSMW
- S4HANA
Jul 2018 - May 2022
3 years 11 monthsTurkey
Technical Architect, Lead Developer, Software Development Team Lead
FIT GLOBAL
- Developed FIT products (ABAP add-ons on SAP): Fit-Rent on Cloud (SAP BTP), Fit-Rent, Fit-Lease, Fit-EM, Fit-Service, Fit-Parts, Fit-Prime, Fit-Interface, Fit-CDBS
- Customer project implementations for Nippon Caterpillar (Japan) and Wacker Neuson (Germany)
- Upgraded products from SAP R/3 to S4HANA and from S4HANA 1809 to 1909 and 2020
- Certified FIT products and managed configuration and version management
- Packaged FIT products
- Developed DevSync, Req-Check, Repo-Test on SAP for continuous integration
- Managed toolsets: JIRA, Slack, GIT, AbapGIT
Sep 2017 - Jul 2018
11 monthsTurkey
SAP Senior ABAP Developer & Software Group Manager
MITAS A.S.
- Full cycle S/4 HANA implementation for MITAS Civata
- Data migration for all data (customer, supplier, account, material, stock, HR person) with LTMC and LSMW
- SAP joint venture project on S4HANA for all group companies
- SAP ERP on HANA system support and maintenance
Nov 2013 - Jul 2017
3 years 9 monthsTurkey
SAP ERP Group Manager
HAVELSAN A.S.
- Managed delivery plans, task management, progress tracking for seven ERP projects
- Coordinated between technical managers and project manager
- Supported business development (ERP, military logistics, e-government)
- People management: recruiting, evaluation, mentoring
- Leadership and performance management
- Managed teams of up to 70+ people with multi-million dollar budgets
- RM planning for ERP projects
Oct 2012 - Jul 2017
4 years 10 monthsTurkey
Team Leader/Technical Manager
HAVELSAN A.S.
- Technical team leader for ABAP development team
- Collaborated with clients to understand needs
- Managed day-to-day project operations and technical teams
- Provided technical support for ABAP, PM, PP, HR, TEM consultants
- Established success criteria and monitored schedules
- Produced and maintained technical documentation and internal training
Oct 2004 - Jul 2017
12 years 10 monthsTurkey
Senior ABAP Developer
HAVELSAN A.S.
- SAP EAM, MM, SD, PP, PM, BW, HR, TEM development
- ABAP report and dialog programming, module pool, function group, data dictionary
- ABAP Objects and OOP
- ALV grid, SALV, SAP Tree Models, HR OM and custom controls
- HR programming, reporting, payroll clusters
- ALE-EDI/IDOC development
- Workflow development and business object design
- RFC, BAPI, modifications and enhancements
- Data transfers via LSMW, direct input, batch input, IDOC
- Web services, SmartForms, Adobe Forms
- Batch input, SAP authorization and roles
- Shared object memory, OSS notes, performance tuning and code review
Mar 2003 - Oct 2004
1 year 8 monthsTurkey
Senior SAP Basis Consultant
HAVELSAN A.S.
- SAP basis consulting for military and government projects
Jul 1999 - Oct 2001
2 years 4 monthsNetherlands
SAP Basis Consultant
PHOBOS B.V.
- SAP basis consultant at Megaplast ERP project
Germany
Senior SAP Lead Developer and Technical Manager
Berlin Tires, GmbH
- End-to-end SAP implementation project
- SAP technical lead for the whole technical team
- Developer for SD, MM, WM, FI
- Data migration for all data (customer, supplier, account, material, stock, HR person data) with Migrate Your Data
- S4HANA 2021
Germany
Senior SAP Developer
DAW
- SAP development for SD
- S4HANA
Switzerland
Senior SAP Developer and Integration Consultant
Interdiscount
- SAP developer
- IDOC configuration and development
- S4HANA
Germany
Senior SAP Developer
MAPA GmbH
- SAP development for WM/MM
- Developed specific algorithms for packaging, picking, and shipping processes
United States
Senior SAP Developer
PPG Industries, Inc.
- SAP development consultant for PPG Connect/BAU project
- SAP ABAP
- SAP S/4 HANA
- SAP OTC, ERP, PM, logistics
Germany
Senior SAP Developer and Data Migration Consultant
RWS
- SAP developer and migration consultant
- Migrate Your Cockpit and LTMOM framework
- SAP S4HANA
Switzerland
Senior SAP Developer and Integration Consultant
SV Informatik
- SAP developer
- IDOC configuration and development for finance, sales, material management
- S4HANA
Germany
Senior SAP Developer
Socura
- SAP developer
- Custom code management and code migration from ECC to S4HANA
- ATC checks and S4HANA readiness checks
- SAP S4HANA (migration from ECC)
Summary
25 years of experience in as Senior SAP ABAP Developer with a proven problem solving skills and experience on development with ERP / S4 HANA and modules especially on SAP EAM Enterprise Asset Management, PM, MM, SD, PP, HR and broad range of technologies (S4HANA, ERP, Integrations, Web Services, RESTful Services, SOAP, ODATA, MRP, ITS, NetWeaver, Solution Manager, Basis Background, Software Logistics, Custom Code Management, Versioning, JIRA, AbapGIT, Git, LTMC, LSMW, LTMOM, Migrate Your Data).
During these years I have implemented different innovative solutions, mentored and coached technical teams, also I have improved processes to increase transparency, performance, and customer satisfaction. I also developed excellent communication, teamwork and leadership skills while leading the teams in projects.
I am an experienced leader, high committed, result oriented, innovative, out-of-box thinker, always looking for better ways, initiative-taking, customer focus, admirably adapted in international environments, and strategic thinker with high teamwork spirit.
Skills
- Sap Application Development
- Sap Hana, Sap S4hana
- Abap Objects (Oop Object Oriented Programming) Abap-oo
- Cds And Amdp
- Data Transfer/migration, Batch Input, Lsmw
- Ltmc And Ltmom Framework
- Dmc (Data Migration Cockpit), Migrate Your Data Fiori App
- Sap Workflow, Dialog Programming, Brf+
- Sap Fiori Configuration And Implementation
- Luw Concept
- Sap Upgrades Pre/post Operations
- Shared Memory Objects Developments For Large Scale Data Management
- Dynamic Programming (Field Symbols - Data References - Rtts)
- Performance Tuning/analysis, Runtime Analysis, Tuning And Code Review, Sql Trace
- Atc Checks, S4hana Readiness Checks
- Code Migration To Abap Cloud Or Ecc To S4hana
- Integration With Sap And Non-sap Systems
- Gateway Services, Odata, Restful Services
- Soa (Web Services Over Sap And Over Pi), Proxy Implementations
- Solid Version Management Experience Over Transport Management (Stms) And Git / Abapgit
- Idoc Technology, Development
- Alv/salv Control
- Enhancements, Badi, User Exits, Bte, Bapi
- Sap Ole
- Adobe Forms And Smartforms
- Sap Dms
- Software Architecture
- Technical Team Leadership
- Digital Transformation
- Agile & Scrum Methodologies
Languages
Turkish
NativeGerman
AdvancedEnglish
ElementaryDutch
ElementaryEducation
Oct 2015 - Jun 2017
Bahçeşehir University, Graduate School of Social Sciences
MBA · Business Administration · Ankara, Turkey
Oct 2009 - Jun 2014
Çankaya University
Master of Science · Computer Science · Ankara, Turkey
Oct 1993 - Jun 1999
Bilkent University
Bachelor of Science · Computer Engineering · Ankara, Turkey
Certifications & licenses
PMP - Project Management Certification
SAP R/3 Basis Certificated Consultant
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