Haydar Velioglu - Senior SAP Migration Expert

Q: Where is Haydar based?

Haydar is based in Ankara, Turkey and prefers 100% remote projects.

Q: What languages does Haydar speak?

Haydar speaks the following languages: Turkish (Native), German (Advanced), English (Elementary), Dutch (Elementary) .

Q: How many years of experience does Haydar have?

Haydar has at least 23 years of experience. During this time, Haydar has worked in at least 10 different roles and for 7 different companies . The average length of individual experience is 2 years and 3 months . Note that Haydar may not have shared all experience and actually has more experience.

Q: What is Haydar's latest experience?

Haydar's most recent position is Senior SAP Migration Expert at Cewe Group .

Q: What companies has Haydar worked for in recent years?

In recent years, Haydar has worked for Cewe Group , 50Hertz Transmission GmbH , Rönesans Holding , and FIT GLOBAL .

Q: Which industries is Haydar most experienced in?

Haydar is most experienced in industries like Aerospace and Defense , Information Technology , and Government and Administration . Haydar also has some experience in Professional Services , Manufacturing , and Utilities .

Q: Which business areas is Haydar most experienced in?

Haydar is most experienced in business areas like Information Technology , Project Management , and Product Development . Haydar also has some experience in Human Resources , Logistics , and Operations .

Q: Which industries has Haydar worked in recently?

Haydar has recently worked in industries like Information Technology , Utilities , and Construction .

Q: Which business areas has Haydar worked in recently?

Haydar has recently worked in business areas like Information Technology , Product Development , and Logistics .

Recommended expert

Ankara, Turkey

Experience

Nov 2024 - Feb 2025

4 months

Germany

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 months

Germany

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 months

Turkey

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 months

Turkey

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 months

Turkey

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 months

Turkey

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 months

Turkey

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 months

Turkey

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 months

Turkey

Senior SAP Basis Consultant

HAVELSAN A.S.

SAP basis consulting for military and government projects

Jul 1999 - Oct 2001

2 years 4 months

Netherlands

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)

Industry Experience

See where this freelancer has spent most of their professional time.

Experienced in Aerospace and Defense, Information Technology, Government and Administration, Professional Services, Manufacturing, and Retail.

Aerospace and Defense

Information Technology

Government and Administration

Professional Services

Manufacturing

Retail

Business Area Experience

See which departments and functions this freelancer has contributed to most.

Experienced in Information Technology, Project Management, Product Development, Human Resources, Logistics, and Operations.

Information Technology

Project Management

Product Development

Human Resources

Logistics

Operations

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

Native

German

Advanced

English

Elementary

Dutch

Elementary

Education

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

Statistics

Experience

Total positions 18

Experience in Aerospace and Defense 14.5 y

Avg length 1 y 9 m

Longest experience 12 y 9 m

Global Experience

Countries worked in 5 (Germany, Turkey, Switzerland, Netherlands, United States)

Primary country Germany

Expertise

Recent roles Senior SAP Migration Expert, Senior SAP Developer, Senior SAP Developer and Migration Consultant

Main industries Aerospace and Defense, Information Technology, Government and Administration

Main business areas Information Technology, Project Management, Product Development

Qualifications

Highest degree Master

Certifications earned 2

Profile

Created

March 2025

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Haydar based?

Haydar is based in Ankara, Turkey and prefers 100% remote projects.

What languages does Haydar speak?

Haydar speaks the following languages: Turkish (Native), German (Advanced), English (Elementary), Dutch (Elementary).

How many years of experience does Haydar have?

Haydar has at least 23 years of experience. During this time, Haydar has worked in at least 10 different roles and for 7 different companies. The average length of individual experience is 2 years and 3 months. Note that Haydar may not have shared all experience and actually has more experience.

What roles would Haydar be best suited for?

Based on recent experience, Haydar would be well-suited for roles such as: Senior SAP Migration Expert, Senior SAP Developer, Senior SAP Developer and Migration Consultant.

What is Haydar's latest experience?

Haydar's most recent position is Senior SAP Migration Expert at Cewe Group.

What companies has Haydar worked for in recent years?

In recent years, Haydar has worked for Cewe Group, 50Hertz Transmission GmbH, Rönesans Holding, and FIT GLOBAL.

Which industries is Haydar most experienced in?

Haydar is most experienced in industries like Aerospace and Defense, Information Technology, and Government and Administration. Haydar also has some experience in Professional Services, Manufacturing, and Utilities.

Which business areas is Haydar most experienced in?

Haydar is most experienced in business areas like Information Technology, Project Management, and Product Development. Haydar also has some experience in Human Resources, Logistics, and Operations.

Which industries has Haydar worked in recently?

Haydar has recently worked in industries like Information Technology, Utilities, and Construction.

Which business areas has Haydar worked in recently?

Haydar has recently worked in business areas like Information Technology, Product Development, and Logistics.

What is Haydar's education?

Haydar holds a Master in Business Administration from Bahçeşehir University, Graduate School of Social Sciences, a Master in Computer Science from Çankaya University and a Bachelor in Computer Engineering from Bilkent University.

Does Haydar have any certificates?

Haydar has 2 certificates. These include: PMP - Project Management Certification and SAP R/3 Basis Certificated Consultant.

What is the availability of Haydar?

Haydar is immediately available full-time for suitable projects.

What is the rate of Haydar?

Haydar's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.