You're seeing this page as if you were . The main menu is still yours, though. Exit from immersion
David Fernández CastroDF

David Fernández Castro

SAP Solution Technical Architect

€650/day
Madrid, ES
15+ years

Average response time: 1 hour

About David

  • Spanish

    Native or bilingual

  • English

    Fluent

Can work on-site
Madrid (up to 50km)

Experience

  • IAG
    SAP Technical Architect
    AVIATION AND AEROSPACE
    September 2025 - Today (9 months)
    Madrid, Spain
    SAP systems merge to merge British Airways SAP S/4HANA system into IAG SAP S/4HANA system Detail Lead technical team with integration, basis and development areas. Workshops held with client to explain the strategy and objects migration, conflict resolution and retrofit handling (dual maintenance). Support technical teams with tasks and estimating change requests along project.
    S/4HANA SAP Integration Technical leadership SAP ABAP Dual run
  • British American Tobacco - UK
    SAP Code Remediation Lead
    RETAIL (LARGE RETAILERS)
    March 2025 - August 2025 (5 months)
    Madrid, Spain
    S/4HANA Phase 0 to do a deep analysis on custom code, working on estimation efforts doing manual remediation or using third party tools (smartShift).
    Detail Deep dive into custom code, running CCM App (ATC), mapping to functional work streams, analysis of custom code usage statistics, custom code scoping, effort estimation of code remediation, TUT and documentation, SPDD/SPAU activities, …Working also closely to smartShift to provide alternative approach using automation.
    Clean core S/4HANA Discovery Phase Custom code migration S/4HANA
  • Bacardi
    SAP Technical Architect / UX Lead
    WINE AND SPIRITS
    September 2025 - December 2025 (3 months)
    Madrid, Spain
    S/4HANA Phase 0 for a Greenfield approach, working in technical tower as technical lead and also leading the UX workstream (discovery - UX workshops, KDDs, …). Detail Support client in phase 0 / discover for an upcoming SAP S/4HANA Greenfield migration, leading technical team with areas Basis / Infra and integration. Also leading the UX work stream during this phase to suggest UX value goals and persona identification.
    Main activities and responsibilities S/4HANA Phase 0 to do a deep analysis on custom code, working on estimation efforts doing manual remediation or using third party tools (smartShift). Detail Deep dive into custom code, running CCM App (ATC), mapping to functional work streams, analysis of custom code usage statistics, custom code scoping, effort estimation of code remediation, TUT and documentation, SPDD/SPAU activities, …Working also closely to smartShift to provide alternative approach using automation.
    S/4HANA Discovery Phase SAP UX Technical Architecture SAP Fiori

Recommendations

Be the first to recommend David

Help this freelancer shine by sharing your experience working together.

These freelancer profiles also match your criteria

AgathaA

Agatha Frydrych

Backend Java Software Engineer

4.7

(3)

2

BaptisteB

Baptiste Duhen

Fullstack developer

4.6

(4)

5

AmedA

Amed Hamou

Senior Lead Developer

4

(2)

7

AudreyA

Audrey Champion

Web developer

4.3

(3)

4

Education

  • Advisory Skills - RISE with SAP S/4HANA Cloud Private Edition - Cloud Architecture
    Faculty of Computer Science (Universidad Complutense de Madrid)
    2006
    Advisory Skills - RISE with SAP S/4HANA Cloud Private Edition - Cloud Architecture
  • SAP Certified Development Associate – SAP BTP Extension Developer
    2022
    SAP Certified Development Associate – SAP BTP Extension Developer

Categories