Freelancer profile translated to English.

Description

Replacing legacy ERPs, migrating data cleanly, connecting systems that previously didn't communicate: that's my domain. For over 20 years, I've been supporting Swiss SMEs and large corporations in areas where data migrations, system integrations, and process automations become challenging.

Typical mandates: Replacing a legacy ERP with Dynamics 365 or SAP, including complete data migration and validation. Middleware between CPQ tools, internal ERP, and group-wide SAP. ETL pipelines that reduce manual daily work at the touch of a button. Python frameworks that validate 100% of data records instead of using samples.

My stack: SQL Server, C#, .NET, Azure, Python, REST and OData interfaces. What sets me apart from traditional developers: I listen first. As a graduate systems engineering professional (FH) with experience as CIO and development team lead, I understand not only the code but also the business processes behind it. This helps when it comes to accurately capturing requirements, mediating between business departments and IT, and creating technical concepts that are sustainable in everyday practice.

I prefer to work as a technical sparring partner: closely with the team, transparently, and with the goal that not only data but also know-how remains with the client in the end.

Industry field of expertise

Languages

German
Native or bilingual
English
Conversational
French
Basic

Workplace preferences

Can work on-site

St. Gallen (up to 50km), Zürich (up to 50km)

CH Haustechnik-Unternehmen
Migration Planning (Subcontracting)
CIVIL ENGINEERING
January 2026 - March 2026 (2 months)
Support in creating the cut-over plan for the introduction of Microsoft Dynamics 365 CRM, with integration to SAP and CPQ solution. Structuring of migration steps, risk assessment for go-live.
Goal:
• Structured and risk-minimized introduction of Microsoft Dynamics 365 CRM
• Definition and coordination of all migration steps until go-live
Data Migration Microsoft Excel Jira/Confluence Project Management
Helion Energy AG
Data Migration Specialist
September 2024 - May 2025 (8 months)
• Analysis of data structures and content in the legacy system (SQL-based)
• Extraction, preparation, and transformation of source data via SQL Views and Stored Procedures
• Development of a Python validation framework: 100% of data records automatically validated (instead of samples)
• Daily validation cycles, early detection of data inconsistencies
Technologies:
• SQL Server
• Python (Pandas, openpyxl, tqdm), T-SQL
• OData API (D365), REST, Excel
Helion Energy AG
Business Analyst, Senior Software Engineer
October 2024 - June 2025 (8 months)
Conceptualization of the internal order flow between custom CPQ development, group-wide SAP, and Microsoft Dynamics 365 Field Service. Requirements gathering with business departments, ensuring flexibility for CPQ further development despite integration with SAP and D365. Conceptualization of data migration from the predecessor system.
Goal:
• Integration of CPQ, SAP, and D365, seamless usability
• Maximum flexibility for CPQ further development despite SAP integration
Technologies:
• Azure SQL
• C#, .NET Core
• OData, SAP