ETL Experts in Düsseldorf

• Title: Enhancing Syntactic Awareness in Transformer Language Models for Hindi Dependency Parsing
• Investigated syntactic knowledge captured by transformer language models (RoBERTa, XLM-RoBERTa) for Hindi dependency parsing, a morphologically rich and low-resource language.
• Developed structure-aware model variants (Struct_Roberta_hi, Struct_XLMR) by integrating a CNN-based parser network between transformer layers, inspired by the StructFormer architecture.
• Conducted extensive error analysis including label-wise, distance-based, direction-based, sentence length-based, and LVC/Non-LVC evaluations.
• Evaluated models on downstream NLP tasks (NER, POS tagging) using the IndicXTREME benchmark.

• Gathered and analyzed requirements in close collaboration with business departments to develop data-driven solutions and scalable PowerBI reporting infrastructures.
• Conducted detailed error analyses and optimized existing semantic and data models to ensure a robust data architecture and high data quality and to improve PowerBI reporting.
• Developed and implemented scalable ETL processes for data preparation and integration.
• Built a wiki for table and view descriptions as well as PowerBI PowerQuery and KPI documentation to ensure a consistent understanding of data structures and key performance indicators.

• Led the migration of the existing DWH, including HR data, application processes, project business and time tracking, from an MS SQL Server environment to Azure Databricks
• Refactored existing data models and ETL processes and extended them with new objects and functionalities
• Used Azure Databricks (Unity Catalog, Notebooks, Spark SQL, Databricks Dataflows) and Power BI
• Technologies: MS SQL Server 2019 (SSMS, SSIS), Power BI, Delta Lake, Azure Databricks

• Analysis, software development/adaptation and testing of various transaction and batch objects
• Execution of specialist integration and regression tests on TEST and QA platforms under z/OS for subsequent implementation in production
• Hardware / software / tools: IBM-MVS, z/OS, JES2/3, TSO-ISPF, JCL, DB2, SQL, SQL/PL, QMF, QMF for Work-Stations, SPUFI, FileAid, IMS-DB/DC, MFS, XPEDITER, COBOL, REXX, Windows-10, MS-Office-365, MS-Teams, batch job management via OPC, BETA92, RVS, BVB, ABL, DIALOGplus, PROBA, PRODPR (VW internal systems), JIRA, CONFLUENCE

• AI-Enabled Analytics & Reporting: Lead a 2-person BI team, applying predictive analytics and automation to translate complex business requirements into forward-looking insights, recommendations, and financial reports.
• Advanced Data Visualization: Design and maintain 25+ high-impact Power BI/Tableau dashboards tracking company-wide KPIs and trends, structured to support predictive and automated reporting.
• Web Analytics & Insights: Own GA4 tracking and analysis, driving a 15% increase in conversion insight through deeper customer journey analysis.
• Data Pipeline Optimization: Partner with data engineers to redesign and automate data pipeline workflows, cutting manual reporting time by 20% while safeguarding data accuracy and system uptime.

• DWH modernization
• Migration from Informatica PowerCenter to IDMC/CDI
• Migration from IBM DB2 to Databricks

Technologies: Informatica IDMC, Databricks

• Development and maintenance of database-driven applications for managing supplier and food contracts, with extensive use of Oracle PL/SQL for complex business logic and data processing
• Optimization of PL/SQL procedures, functions, and triggers to ensure the performance and scalability of Oracle database solutions
• Ensuring compliance with best practices in PL/SQL development and implementing standards for code quality and data integrity
• Close collaboration with backend and frontend teams to ensure smooth integration between the Oracle database, C#-based APIs, and Azure cloud services

• Design and implementation of an OCI-based DWH and ETL system to replace legacy mainframe applications
• Development of a database optimization strategy and planning the rapid conversion of JCL and COBOL routines to PL/SQL with the help of AI
• Development of an Oracle Apex-based app for internal administrative processes in the public sector (office equipment, employee training)
• Implementation of PL/SQL workflows for approval processes and creation of a responsive mobile version with JavaScript and CSS
• Use of Azure DevOps for backlog and documentation, as well as Git for version control
• Development of REST interfaces for CRM systems
• Replacement and reprogramming of Oracle Forms screens with Oracle Apex and upgrading to the latest Apex versions
• Design of a Git branching strategy and conducting code reviews
• Maintenance and further development of an EDI-based data exchange system based on Oracle Advanced Queuing for the public sector in Austria
• Data analysis and creation of charts in the Oracle Apex frontend; installation of standalone ORDS and Apex 23.1
• Agile working according to the Spotify Model; development of complex Apex screens with the support of Oracle JET
• New development and customization of existing PL/SQL packages, workarounds for database version differences and query optimization
• Development of Apex applications for broker pools to manage and optimize Oracle databases in the banking sector, including SSO-based authorization systems with OAuth2 and Keycloak
• Development of extensive Oracle Apex applications for BI and data mining modernization projects, as well as development of manual and automated projection methods in the frontend
• Implementation of data warehousing projects in the banking sector and use of Scrum and Kanban in team-oriented projects

• Led the design, implementation, and optimisation of SAP Analytics Cloud (SAC) dashboards, stories, and reports for business users.
• Worked closely with business stakeholders to gather and analyse reporting requirements, translating them into technical designs.
• Integrated SAC with SAP BW/4HANA, SAP S/4HANA, SAP HANA Views, and external data sources.
• Developed SAC Planning models and supported planning processes, including input forms, allocations, forecasts, and simulations.
• Configured live and import connections to SAP and non-SAP data sources.
• Conducted performance tuning, security setup, and ensured data accuracy in SAC environments.
• Provided training, documentation, and best practices for SAC adoption across the organization.
• Led incident management, change requests, and enhancements in SAC landscapes.

• Responsibility for group-wide financial management with a focus on management, PE, and lender reporting.
• Focus on an integrated financial model (P&L, balance sheet, cash flow), robust liquidity and covenant management, and preparation of decision-ready materials for financiers, auditors, and rating stakeholders.
• Establishment of reporting standards, data logic, and closing routines for high-frequency scalability.
• Further development of an integrated financial model (P&L/BS/CF), including scenario capabilities, sensitivities, and driver-based forecasting logic.
• Design and management of a rolling liquidity plan (short-/mid-term), including working capital mechanisms and financing instruments.
• Preparation and quality assurance of lender reporting, including covenant calculations, bridge analyses, and variance explanations.
• Support for the CFO agenda in financier and stakeholder communication (Q&A, documentation logic, key messages, data consistency).
• Coordination and content input for rating- and financing-related deliverables (e.g., presentations, data rooms, management commentary).
• Management of IFRS/accounting topics (e.g., IFRS 16 lease logic, accrual and reconciliation concepts) to ensure reporting and audit readiness.
• Standardization of reporting structures, templates, and KPI definitions across entities to increase transparency, comparability, and speed.

• Evaluate, design, and implement Power BI solutions for Cat4 reporting, significantly improving reporting efficiency, accuracy, and stakeholder visibility.
• Develop and maintain robust data integration interfaces between Cat4 and Power BI, eliminating manual processing bottlenecks.
• Configure and continuously optimise Power BI reports to deliver sharper management insights and support data-driven decision-making.
• Ensure full GDPR data protection compliance across Power BI reports, proactively identifying and mitigating risks.
• Acquired in-depth product knowledge of CAT4, a globally deployed enterprise platform, enabling effective requirements analysis, solution design, and seamless Power BI integration across client environments.
• Developed and integrated scalable reporting templates within the CAT4 product interface, delivering new product features and enhancing data visualisation, reporting efficiency, and stakeholder visibility across global users.
• Trained and mentored staff on Power BI configuration and best practices, accelerating adoption and embedding a data-driven culture.
• Prepared clear technical documentation and delivered hands-on demonstrations to end users and clients, ensuring smooth adoption and confident use of Power BI solutions integrated with CAT4.
• Researched and recommended licensing strategies for cost-effective and scalable Power BI deployment.

SKILLS - BI & Visualisation: Power BI (Desktop, Service, Report Builder), DAX, Power Query

Project and Product Management Tool: CAT4

• Instructor / Trainer
• SAP applications in SAP S/4 HANA - Sales, Sourcing Procurement, Logistic Execution, SAP Foundation
• SAP S/4 HANA - Fiori UX and Fiori Launchpad
• Cross-module MM application - Sourcing & Procurement
• Business processes SAP S/4 HANA Procurement
• Purchasing processes SAP S/4 HANA MM
• Incoming processes SAP S/4 HANA MM
• Supplier invoicing SAP S/4 HANA MM
• Pricing & plant determination SAP S/4 HANA MM
• Automation in SAP S/4 HANA MM
• Business processes SAP S/4 HANA Pre & After Sales
• Sales processes SAP S/4 HANA Sales
• Delivery processes SAP S/4 HANA Sales
• Billing SAP S/4 HANA Sales
• Pricing SAP S/4 HANA Sales and Storage Rooms and Lean-EWM
• Automation in SAP S/4 HANA Sales
• SAP S/4 HANA – SAP Private Cloud – Release 2023

Implemented Power BI reporting for various departments at an energy provider. Agile project: responsible for organizing and coordinating with departments and IT, and regularly presented interim steps and results to project management.

• Project: Migration of large data sets
• Result: ETL route development with AWS Glue and Talend Open Studio