Sebastian Wiche - Engineering Lead / Senior SAP ABAP...

Q: Where is Sebastian based?

Sebastian is based in Zeulenroda-Triebes, Germany and can operate in on-site , hybrid , and remote work models.

Q: What languages does Sebastian speak?

Sebastian speaks the following languages: German (Native), English (Advanced) .

Q: How many years of experience does Sebastian have?

Sebastian has at least 16 years of experience. During this time, Sebastian has worked in at least 3 different roles and for 1 company . The average length of individual experience is 5 years and 5 months . Note that Sebastian may not have shared all experience and actually has more experience.

Q: What is Sebastian's latest experience?

Sebastian's most recent position is Engineering Lead / Senior SAP ABAP Developer at HUGO BOSS AG .

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

In recent years, Sebastian has worked for HUGO BOSS AG .

Q: Which industries is Sebastian most experienced in?

Sebastian is most experienced in industries like Fashion and Retail .

Q: Which business areas is Sebastian most experienced in?

Sebastian is most experienced in business areas like Information Technology , Project Management , and Quality Assurance .

Q: Which industries has Sebastian worked in recently?

Sebastian has recently worked in industries like Fashion .

Q: Which business areas has Sebastian worked in recently?

Sebastian has recently worked in business areas like Information Technology .

Recommended expert

Zeulenroda-Triebes, Germany

Experience

Jan 2017 - Dec 2025

9 years

Metzingen, Germany

Hybrid

Engineering Lead / Senior SAP ABAP Developer

HUGO BOSS AG

Functional leadership of distributed SAP development teams (50+ internal and external developers)
Architecture and design responsibility for business-critical SAP core components
Hands-on ABAP development in business-critical systems (SAP ECC & S/4HANA)
Analysis and modernization of existing ABAP logic as part of the S/4HANA transformation
Refactoring and performance optimization of existing ABAP core logic
Implementation of clean code principles, coding guidelines, and structured code reviews
Technical management of external development partners

Key impact

Sustainable stabilization and scaling of the SAP development organization
Measurably improved code quality and reduction of technical debt in the core system
Created a technically clean foundation for the S/4HANA transformation
Increased delivery reliability despite growing system and team complexity

Jan 2014 - Dec 2016

3 years

Metzingen, Germany

On-site

Technical Project Lead / SAP ABAP Developer

HUGO BOSS AG

Technical project management in the context of SAP CAR and omnichannel processes
Introduction and establishment of clean code principles in development teams
Building unit testing and Test-Driven Development (TDD)
Structured code reviews to ensure quality and maintainability
Coaching developers in refactoring and sustainable code architecture
Technical coordination with architecture, Basis, and adjacent systems

Key impact

Significantly improved code quality and long-term maintainability of the ABAP codebase
Reduction of technical debt and fewer errors in the teams
Established modern engineering standards as a basis for later scaling

Sep 2009 - Dec 2013

4 years 4 months

Metzingen, Germany

On-site

Software Engineer / SAP ABAP Developer

HUGO BOSS AG

SAP ABAP development in end-to-end sales processes (Order-to-Cash)
Implementation and extension of stable SAP backend functionalities
Close collaboration with business units to translate requirements into technical solutions
Early involvement in solution design and technical architecture decisions

Key impact

Built solid SAP Retail and sales domain expertise as a long-term foundation
Delivered stable, maintainable ABAP solutions in a productive retail environment
Created a solid technical foundation for future lead and architecture roles

Industry Experience

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

Experienced in Fashion and Retail.

Fashion

Retail

Business Area Experience

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

Experienced in Information Technology, Project Management, and Quality Assurance.

Information Technology

Project Management

Quality Assurance

Summary

Engineering lead and senior SAP ABAP architect with over 15 years of hands-on experience in complex SAP core and S/4HANA landscapes – specializing in SAP Retail, CAR/POS DTA, and large transformation programs. Proven track record of leading distributed development teams with 50+ developers while maintaining deep technical ownership. Combines architectural responsibility with hands-on ABAP execution and bridges the gap between strategy and delivery.

Extensive project experience in enterprise-level international fashion & retail organizations.

Skills

Sap Abap
Sap S/4hana
Sap Car / Pos Dta
Sap Retail
Abap Oo
Sap Ecc
Cds Views
Amdp
Odata / Gateway
Sap Sd / Billing
Ale / Idocs
Apis
Clean Code Abap
Engineering Lead
Tech Lead / Architect
Sap S/4hana
Sap Ecc
Abap Oo
S/4hana Transformation
Clean Core
Sap Architecture
S/4hana Readiness
Interim Management
Distributed Teams
Delivery Ownership
Code Reviews
Refactoring
Performance Optimisation
Tdd
Sap Car
Sap Ecc
Abap Oo
Omnichannel
Clean Code
Unit Testing
Sap Ecc
Sap Retail
Sap Abap
Order-to-cash
Sap Sales
15+ Years In International Fashion & Retail Organizations At Enterprise Scale
Deep Understanding Of Sap-driven Core Processes In Omnichannel Retail Environments
Experience With Highly Integrated Sales, Logistics & Supply Chain Processes
Management Of Seasonal Business Cycles And High Process Dynamics
Stabilization And Continuous Development Of Complex Retail System Landscapes

Languages

German

Native

English

Advanced

Statistics

Experience

Total positions 3

Experience in Fashion 16.5 y

Avg length 5 y 4 m

Longest experience 8 y 11 m

Global Experience

Countries worked in 1 (Germany)

Primary country Germany

Expertise

Recent roles Engineering Lead / Senior SAP ABAP Developer, Technical Project Lead / SAP ABAP Developer, Software Engineer / SAP ABAP Developer

Main industries Fashion, Retail

Main business areas Information Technology, Project Management, Quality Assurance

Profile

Created

March 2026

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Frequently asked questions

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

Where is Sebastian based?

Sebastian is based in Zeulenroda-Triebes, Germany and can operate in on-site, hybrid, and remote work models.

What languages does Sebastian speak?

Sebastian speaks the following languages: German (Native), English (Advanced).

How many years of experience does Sebastian have?

Sebastian has at least 16 years of experience. During this time, Sebastian has worked in at least 3 different roles and for 1 company. The average length of individual experience is 5 years and 5 months. Note that Sebastian may not have shared all experience and actually has more experience.

What roles would Sebastian be best suited for?

Based on recent experience, Sebastian would be well-suited for roles such as: Engineering Lead / Senior SAP ABAP Developer, Technical Project Lead / SAP ABAP Developer, Software Engineer / SAP ABAP Developer.

What is Sebastian's latest experience?

Sebastian's most recent position is Engineering Lead / Senior SAP ABAP Developer at HUGO BOSS AG.

What companies has Sebastian worked for in recent years?

In recent years, Sebastian has worked for HUGO BOSS AG.

Which industries is Sebastian most experienced in?

Sebastian is most experienced in industries like Fashion and Retail.

Which business areas is Sebastian most experienced in?

Sebastian is most experienced in business areas like Information Technology, Project Management, and Quality Assurance.

Which industries has Sebastian worked in recently?

Sebastian has recently worked in industries like Fashion.

Which business areas has Sebastian worked in recently?

Sebastian has recently worked in business areas like Information Technology.

What is the availability of Sebastian?

Sebastian will be available part-time from April 2026.

What is the rate of Sebastian?

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