Alexander L.

Senior Data Engineer & Solution Architect

Alexander L.
Rosenheim, Germany

Experience

Sep 2025 - Present
5 months

Senior Data Engineer & Solution Architect

  • Design and development of ETL/ELT and data warehouse / data lake solutions based on MS SQL, PostgreSQL, Oracle
  • Creation of architecture and solution concepts/designs based on customer requirements in the central data warehouse
  • Implementation of Python-based dataflows/pipelines for process automation
  • Contribution to the modernization of the technology stack with cloud-based services (including Azure Services and REST APIs)
  • Continuous development and maintenance of processes in a heterogeneous system landscape on Oracle 23ai database (incl OCI)
  • Support of business departments, including the implementation of cross-functional enhancements
  • Technical leadership in complex reporting and Big Data projects (PowerBI, Microsoft Fabric, Azure SQL/Synapse)
Sep 2022 - Sep 2025
3 years 1 month

Senior Data Engineer, Team & Project Lead

  • Leading the core data engineering and analytics team including business analysts, technical project lead, and requirements/stakeholder management
  • Design and development of ETL/ELT solutions based on SQL and PL/SQL (Oracle 19c / OCI)
  • Creation of architecture and solution concepts/designs based on customer requirements in the central data warehouse
  • Implementation of Python-based dataflows/pipelines for process automation
  • Contribution to the modernization of the technology stack with cloud-based services (including Azure Services and REST APIs)
  • Continuous development and maintenance of processes in a heterogeneous system landscape on Oracle 19c database (Exadata)
  • Support of business departments, including the implementation of cross-functional enhancements
  • Technical leadership in complex reporting and Big Data projects (PowerBI, Fabric, Azure SQL/Synapse)
Mar 2021 - Aug 2022
1 year 6 months

Python Data Engineer and Backend Developer

  • Design and develop data driven microservices (REST APIs) connected to machine learning pipelines
Jan 2020 - Mar 2021
1 year 3 months

Application Development Power Platform / Power BI

  • Design and development of Power Automation processes including data pipelines and PowerBI integration
Sep 2019 - Sep 2022
3 years 1 month
Munich, Germany

Senior Data Engineer Core Data Warehouse

  • Running and developing Core Data Warehouse sections like data standardization, ETL processes working on incoming customer data, integrating new features and multi tenancy structures.
Nov 2017 - Mar 2019
1 year 5 months
Munich, Germany

Business Analyst / Oracle Development

  • Operation master data
  • Analyzing existing data quality checks and standardization processes
  • Development of a central quality management process
Jun 2016 - Aug 2017
1 year 3 months

Business Analyst / Business Process Management

Atos Information Technology GmbH

  • IT and business process consulting
  • Data analysis and quality management in an asset & project management system
Jan 2016 - Jun 2017
1 year 6 months
Hybrid

License Management / Business Analyst in hybrid cloud structures

  • Concept design for SAM risk assessment service, SAM on Demand and integration to Microsoft Office 365 / Azure
Mar 2014 - Aug 2016
2 years 6 months
Munich, Germany

Database Development / Project Management

SIEMENS AG Deutschland

  • Analysis of business requirements, process design and project lead on data quality assurance for a proprietary application covering financial reporting and location mappings for real estate data

Summary

I am a passionate data professional skilled in designing and developing scalable ETL/ELT solutions, data warehouses, and cloud-based architectures. I leverage my expertise in SQL, Python, and modern cloud services to create robust data pipelines and integrated solutions that support cross-functional business needs.

With a background spanning data engineering, solution architecture, and technical leadership, I excel at simplifying complex data challenges and driving modernization within diverse system landscapes. I am driven by a commitment to clear, efficient processes and continuous improvement in every project I undertake.

Skills

  • Project Management / Team Lead +++ (>20 Years Of Experience)
  • Data Engineering +++ (>20 Years Of Experience)
  • Data Modeling +++ (>20 Years Of Experience)
  • Data Warehousing +++ (>20 Years Of Experience)
  • Etl / Elt Tools & Development +++ (>20 Years Of Experience)
  • Sql-bi / Power-bi +++ (>8 Years Of Experience)
  • Sql (Mssql, Oracle, Postgresql, Mysql) +++ (>20 Years Of Experience)
  • Pl/sql, Pl/pgsql +++ (>12 Years Of Experience)
  • Mongodb, Cassandra, Kafka ++ (>4 Years Of Experience)
  • Business Process Analysis +++ (>12 Years Of Experience)
  • Big Data Analysis +++ (>15 Years Of Experience)
  • Requirements Management +++ (>15 Years Of Experience)
  • Python ++ (> 5 Years Of Experience)
  • Php ++ (>20 Years Of Experience)
  • C# / Asp.net ++ (>12 Years Of Experience)
  • Perl + (>4 Years Of Experience)
  • Html, Javascript +++ (>15 Years Of Experience)
  • Microsoft Azure ++ (> 6 Years Of Experience)
  • Amazon Aws + (> 2 Years Of Experience)
  • Kubernetes, Docker ++ (> 4 Years Of Experience)
  • Git, Subversion, Azure Devops ++ (> 6 Years Of Experience)
  • Quality Management Iso 9001 ++ (>5 Years Of Experience)
  • Software-asset & License Management ++ (>10 Years Of Experience)
  • Microsoft Office +++ (>20 Years Of Experience)
  • Microsoft Visio +++ (>15 Years Of Experience)
  • Microsoft Project ++ (>7 Years Of Experience)
  • Microsoft Access ++ (>7 Years Of Experience)
  • Jira, Confluence ++ (>5 Years Of Experience)
  • Diverse Itil / Itsm Tools +++ (>20 Years Of Experience)
  • Financial Controlling +++ (>10 Years Of Experience)
  • Security And Company Fundamental Analysis +++ (>15 Years Of Experience)
  • Accounting Standards ++ (>10 Years Of Experience)
  • Financial Engineering (Focus Derivatives) ++ (>5 Years Of Experience)
  • Business And Competition Law ++ (>7 Years Of Experience)

Languages

German
Native
English
Advanced
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