Sebastian Vogel Senior SAP Developer
Stuttgart, Germany • sapdev@gmail.com • +49 711 555 0184
Profile Summary
- Senior SAP Developer with 9 years of experience building on enterprise S/4HANA landscapes across automotive, industrial manufacturing, and logistics customer orgs, specializing in modern ABAP on S/4HANA, CDS and RAP modeling, and Fiori delivery.
- Hands-on coverage across ABAP (modern ABAP on S/4HANA), CDS / RAP (CDS views with RAP managed scenario), Fiori UI (Fiori Elements with SAPUI5), integrations (OData v4 with Integration Suite), and BTP (BTP CAP side-by-side extensions, MM and SD) with strong fundamentals in solid ABAP Objects, Open SQL, and async-RFC fundamentals with a working command of CDS modeling, clean-core principles, and transport discipline.
- Deep expertise in CDS view modeling and VDM layering, RAP business object design, clean-core enhancement patterns, and BTP side-by-side extension design, applying methodologies such as modern ABAP with separation between data, behavior, and UI layers and clean-core first, with key-user and side-by-side extensions before core mods to deliver upgrade-safe SAP landscapes that hold up under enterprise process volume.
- Engaged collaborator working cross-functionally with functional consultants, solution architects, basis admins, and key business users in Agile delivery pods with biweekly business demos, walking solutions through design reviews and sprint planning with an ownership-first mindset and clean handoffs.
- Mentor who shares technical excellence and fosters a culture of ATC-clean code and clean-core discipline through code reviews and pattern docs, while running SAP developer guild and S/4HANA migration study group and authoring widely used RAP-pattern and CDS-modeling templates.
Technical Skills
- ABAP & Languages:
- ABAP, ABAP Objects, modern ABAP 7.5+, Open SQL, JavaScript, BAPIs, function modules, reports, classes, interfaces, enhancement spots, BAdIs, user exits, AMDP
- Fiori & UI5:
- Fiori Elements with SAPUI5, SAPUI5, OpenUI5, Fiori Elements, Fiori Launchpad, SAP Build Apps, SAP Build Work Zone, XML views, JavaScript controllers, OData binding
- S/4HANA, CDS & RAP:
- CDS views with RAP managed scenario, CDS views, AMDP procedures, RAP managed scenarios, RAP unmanaged scenarios, behavior definitions, service bindings, HANA calculation views, VDM, embedded analytics
- SAP Modules & Business Processes:
- MM and SD, FI/CO, MM, SD, PP, WM, HR/SuccessFactors, cross-module integration, configuration touchpoints
- Integrations & APIs:
- OData v2, OData v4, REST APIs, OData v4 with Integration Suite, IDocs, RFC, BAPIs, PI/PO, SAP Integration Suite, eventing
- BTP & Cloud Development:
- BTP CAP side-by-side extensions, CAP (Cloud Application Programming Model), Node.js, Java, HANA Cloud, SAP Workflow, Build Apps, Build Work Zone, BTP cockpit, side-by-side extensions
- Transport, DevOps & Quality:
- transport management (CTS/CTS+), abapGit, gCTS, ATC checks, Code Inspector, ABAP Unit with ATC, Git, Azure DevOps, Jenkins for BTP, piper
- Certifications & Tooling:
- SAP Certified Development Associate (ABAP / S/4HANA), Development Specialist (CDS / RAP), ADT in Eclipse, SE80, ST05, SAT, SE30, ST22, debugger, performance tuning
Education & Certifications
Certifications: SAP Certified Development Associate (ABAP for S/4HANA), SAP Certified Development Associate (S/4HANA Cloud), SAP Certified Development Specialist (CDS), SAP Certified Development Specialist (RAP).
Work Experience
- Owned ABAP development end to end on the global Bosch S/4HANA rollout with 22k internal users / 14 plants, shipping procurement automation, shop-floor logistics, and inbound invoice handling across 220+ production classes, function modules, BAPIs, and reports governing the landscape's day-to-day automation.
- Modeled the S/4HANA data and behavior layer with CDS views with RAP managed scenario, AMDP push-down, and VDM-layered CDS views with RAP managed scenario, owning 85 production CDS views feeding Fiori, analytics, and OData consumers, and pulling procurement-list query latency from 4.8s to 0.6s.
- Built modern UI surfaces with Fiori Elements with SAPUI5, Fiori Launchpad tiles, and Fiori Elements list-report and object-page apps, contributing 34 production apps to the launchpad catalogue and lifting weekly active adoption to 12k users across the procurement and warehouse personas.
- Wired platform integrations on OData v4 with Integration Suite, Cloud Integration iFlows, and BAPI wrappers, leaning on OData v4 services with Integration Suite and event mesh across 48 production endpoints to MES, supplier portals, and finance systems, sustaining peak load of 240k IDocs/day with zero duplicate-document incidents over the last four releases.
- Owned module-specific development across MM and SD with finance touchpoints, leaning on MM and SD process automation with FI postings across 60+ module objects (BAdIs, enhancement implementations, custom transactions, and process flows) serving 8k buyers and warehouse staff on the live procurement and outbound flow.
- Hardened performance and debugging discipline with ST05 and SAT profiling with selective Open SQL and AMDP push-down, ATC remediation, and ST22 dump triage on 180M document items of accumulated historical data, pulling the month-end batch run from 6.5h down to 52min with zero CPU- or SOQL-rollback exceptions in production.
- Shipped platform releases with abapGit with gCTS and ATC gates on the Dev to Prod path, Code Inspector rule packs, and pre-import validations across 6 Dev, QA, and Pre-Prod systems with weekly production transports, cutting end-to-end release-cycle time on the procurement package by 46%.
- Delivered enhancements and extensions on regulated customer landscapes with BAdIs, implicit enhancements, and key-user adaptations, user exits, and enhancement spots, shipping 40+ BAdI implementations and custom extensions across 5 customer go-lives, cutting core-mod count on the upgrade path by 68% through the clean-core playbook.
- Built side-by-side extensions on SAP BTP with CAP Node.js services on HANA Cloud with Workflow, destinations and event mesh, integrating 7 BTP services into the on-prem backbone and shipping 6 production extension apps consumed from the Fiori Launchpad.
- Delivered module-specific builds across FI / CO and MM development with PP touchpoints, partnering with functional consultants on configure-vs-develop calls and shaping the requirements with business analysts across 9 manufacturing and finance engagements, landing an average customer-satisfaction score of 4.6 / 5.
- Strengthened modern ABAP foundations across the practice through ABAP Objects refactoring, ABAP Unit tests, and Code Inspector rule packs, pattern docs, and code-review checklists, earning 3 SAP certifications during the role and onboarding 7 junior developers through paired engagements and written ABAP idiom guides.