Stefan W.-Architect/Software Developer/Infrastructure

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Experience
Architect/Software Developer
Global Logistics Support GmbH
Tasks
- Further development of a new ERP system with Blazor
- Generation of e-invoices in the XRechnung and Zugferd formats
- UI/UX design Client-server system
- Windows 11 Technology
- Microsoft .NET 9, Git, Azure DevOps, ASP.NET, MSSQL, Blazor Programming languages
- C#, MVVM Development tools
- Microsoft Visual Studio .NET 2022 Database
- MSSQL Industry
- Other
Architect/Software Developer/Infrastructure
HDI
- Migration of database servers and application servers to the new environment (infrastructure, WPF applications, ASP.NET applications, Excel)
- Replacement of the migrated applications with new applications developed from scratch
- Creation of CI/CD pipelines
- System: Windows 11, Windows Server 2022
- Technologies: Microsoft .NET 4.8, ASP.NET, WPF, Oracle, MSSQL, SSRS, Azure, Azure Blob Storage
- Languages: C#, MVVM, VBA
- Tools: Microsoft Visual Studio .NET 2022, Azure Storage Explorer
- Database: Oracle, MSSQL
- Industry: Insurance
Architect/Software Developer
G+D
- Further development of the Zeus project
- Bug fixing
- Implementation of new features
- Data modeling
- Refactoring of legacy code
- System: Windows 10, Windows 11
- Technologies: Microsoft .NET 4.8, WPF, Oracle, Git, Scrum, Docker, Kubernetes
- Languages: C, C++, C#, XML, XSLT, XSD, Unity, MVVM, Design Patterns, PL SQL
- Tools: Microsoft Visual Studio .NET 2022, Git, Jira, Docker, Oracle SQL Developer, Oracle SQL Developer Data Modeler
- Database: Oracle, SQLite
- Industry: Industrial
Software Developer
In-house development
- Setup of the PV system in Solaranzeige
- Creation of charts using Grafana
- System: Raspberry Pi, Linux
- Technologies: Docker, WAGO control system
- Languages: C#, C++, Grafana
- Database: Maria DB
Architect/Software Developer
Zeppelin Rental GmbH
- Creation of databases with Postgresql
- Creation of services based on OpenAPI
- Creation of a GUI with Angular 12, access to services from the GUI
- Creation of integration tests to test the services
- Creation of tests for Angular components
- Creation of controls
- Creation of reports with Stimulsoft
- Responsive design
- Data modeling
- System: Windows 10
- Technologies: Microsoft .NET 6, Stimulsoft, Scrum, RabbitMQ
- Languages: C#, Design Patterns, Typescript, Angular 12, Swagger, Javascript
- Tools: Micrsoft Visual Studio .NET 2019, Swagger, Git, pgAdmin
- Database: Postgresql 12
- Industry: Industrial
Software Developer
Allianz Wien
- Support for multiple languages (German, English)
- System: Windows 10, Linux
- Technologies: Microsoft .NET 4.6, Winforms
- Languages: C#, C, C++
- Tools: Microsoft Visual Studio .NET 2019 Enterprise, Excel, Git, Oracle SQL Developer, Oracle SQL Developer Data Modeler
- Database: PostgreSQL, Oracle
- Industry: Insurance
Software Developer
Roche Diagnostics GmbH
- Development of the GUI for a recipe software using WPF
- Development of a web application using ASP.NET MVC
- Display/editing of Business Process Model diagrams using BPMN IO
- Refactoring
- System: Windows 10
- Technologies: Microsoft .NET 4.6, Design Pattern, Prism, Unity, WPF, ASP.NET MVC, .NET Core, gRPC, Microsoft Entity Framework, NHibernate, Azure
- Languages: C#, XML, Unity, Prism, Design Patterns, Javascript, Typescript, Node.js, Java
- Tools: Microsoft Visual Studio .NET 2019 Enterprise, DevExpress
- Database: Microsoft SQL Server 2019
- Industry: Pharma
Software Developer Database Development
Münchner Rückversicherungs AG
- Development and maintenance of an Excel plugin using VSTO
- Data modeling
- Data comparison
- System: Windows 10
- Technologies: Microsoft .NET 4.6, Design Pattern
- Languages: C#, VSTO, Design Patterns
- Tools: Microsoft Visual Studio .NET 2017 Enterprise, Excel, Oracle SQL Devloper, Oracle SQL Developer Data Modeler, C++
- Database: Oracle
- Industry: Insurance
Software Developer
AKDB
- Development of forms using ASP.Net MVC
- Migration of Cobol code to C#
- System: Windows 10
- Technologies: Microsoft .NET 4.5, ASP.NET 4.5, ASP.NET MVC, RESTful Services, Microsoft Entity Framework 6.1, Nuget, NPM, WCF, Design Pattern
- Languages: C#, XML, XSD, Autofac, Design Patterns, jQuery, Javascript, Cobol
- Tools: Microsoft Visual Studio .NET 2015 Ultimate
- Database: Microsoft SQL Server 2019
- Industry: Public Authority
Software Developer
Unicredit AG
- Development of forms using AngularJS
- Development of components with AngularJS 2
- Use of NHibernate and Entity Framework as OR mappers
- Development of RESTful Services
- Many years of experience with the USP framework
- Access to Oracle databases
- System: Windows 7
- Technologies: Microsoft .NET 4.5, ASP.NET 4.5, ASP.NET MVC, RESTful Services, Microsoft Entity Framework 6.1, NHibernate, Nuget, NPM
- Languages: C++, C#, XML, XSD, Spring.NET, Design Patterns, jQuery, NVelocity, AngularJS, AngularJS 2, Javascript, Typescript, PL/SQL
- Tools: Microsoft Visual Studio .NET 2015 Ultimate
- Database: Microsoft SQL Server 2008 R2, Oracle
- Industry: Banking
Developer
Hausbank eG
- Creation of documentation for an existing system (installation guide, specifications)
- Creation of test cases
- System: Windows Server 2008 R2
- Technologies: Microsoft Winforms, Crystal Reports
- Languages: C#, PL/SQL
- Tools: Microsoft Visual Studio .NET 2008
- Database: Oracle 11g
- Industry: Banking
Consultant
Qunis GmbH
- Embedding the ASP.NET ReportViewer control into a website
- Creation of reports
- System: Windows Server 2012, Sharepoint 2013
- Technologies: Microsoft ASP.NET 4.0, SSRS 2012
- Languages: C#
- Tools: Microsoft Visual Studio .NET 2010
- Database: Microsoft SQL Server 2012
- Industry: Business Intelligence
Architect/Software Developer
Asset Media Ltd.
- Creation of a web application for evaluating the quality of websites
- Use of SSRS 2008 R2 to create analyses
- System: Windows Server 2008 R2
- Technologies: Microsoft ASP.NET 4.0, SSRS 2008 R2, Microsoft ASP.NET MVC 4.0
- Languages: C#, Design Patterns
- Tools: Micrsoft Visual Studio .NET 2012 Premium
- Database: Microsoft SQL Server 2008 R2
- Industry: Web Design
Software Developer
ZERO-Lacke
- Creation of a cube for an enterprise resource planning system (Microsoft Dynamics AX) to analyze sales
- Creation of reports for the cube
- System: Windows 7, Windows Server 2008 R2
- Technologies: Microsoft Analysis Services (SSAS), Microsoft Reporting Services (SSRS)
- Languages: MDX, T-SQL
- Tools: SQL Server Business Intelligence Development Studio 2008
- Database: Microsoft SQL Server 2008
- Industry: Industry
Architect/Software Developer
EDAG GmbH & Co. KGaA.
- Creation of a .NET architecture for an existing Excel application
- Implementation of the architecture with C#
- Use of Design Patterns
- Creation of a database model
- Use of Microsoft's Entity Framework
- System: Windows 7, Windows Server 2008 R2
- Technologies: Microsoft .NET 4.0, WPF, MVVM
- Languages: VB.NET, C#, XML, XSLT, XSD, Spring .NET, Unity, AOP, Design Patterns, PL/SQL
- Tools: Microsoft Visual Studio Ultimate .NET 2010
- Database: Oracle 11g
- Industry: Industry
Software Developer, Architect
Bayerisches Landesamt für Denkmalpflege
- Creation of web services
- Database access via the ADO .NET Entity Framework
- Systems: Windows 7, Windows Server 2003, Windows Server 2008 R2
- Technologies: Microsoft .NET 3.5, IIS
- Languages: C#, T-SQL, WCF
- Tools: Micrsoft Visual Studio .NET 2008
- Database: Microsoft SQL Server 2005
- Industry: Government agency
Software Developer, Architect
TECOPS GmbH
- Creation of a vacation planner as a web application (personnel management, holiday management, analyses, vacation requests)
- Systems: Windows 7, Windows Server 2003, Windows Server 2008 R2
- Technologies: Microsoft .NET 3.5
- Languages: C#, ASP.NET 3.5, T-SQL, Ajax, Active Directory
- Tools: Micrsoft Visual Studio .NET 2008, Ajax Control Toolkit
- Database: Microsoft SQL Server 2005
- Industry: IT staffing service provider
Architect/Software Developer Database Development
Knorr Bremse Deutschland
- Creation of requirements with Enterprise Architect
- Creation of an abstract XML description language
- Creation of a framework for managing abstract elements
- Use of WPF to display objects
- Creation of reports for Microsoft Projekt 2010
- Use of design patterns (MVVM, Singleton, Factory, Adapter)
- Creation of high-level and detailed concepts
- Use of the UML functionality of Visual Studio 2022
- Migration of legacy data, creation of SSIS packages
- Refactoring of legacy code
- System: Windows 10
- Technologies: Microsoft .NET 4.5, WPF, Microsoft Projekt 2010, SSRS, SSIS, .NET MAUI
- Languages: C++, C#, XML, XSLT, XSD, Spring .NET, Unity, AOP, MVVM, Design Patterns, Java
- Tools: Micrsoft Visual Studio .NET 2019/2022, Microsoft Office 2003, Altova XML Spy 2013, Enterprise Architect, Actipro Software Syntax Editor, Microsoft Business Intelligence Studio 2008, Infragistics, Git, Jira, SQL Developer, Oracle SQL Developer Data Modeler
- Database: Microsoft SQL Server 2008 R2, Microsoft SQL Server 2012/2014/2019, Oracle, MySQL
- Industry: Industry
Architect/Software Developer
R+V Versicherung Wiesbaden
- Revision of an existing .NET 3.5 application
- Separation of GUI and business logic
- System: Windows Vista
- Technologies: Microsoft .NET 3.5, Winforms
- Languages: C#, ADO.NET, LINQ
- Tools: Micrsoft Visual Studio .NET 2008, Microsoft Office 2007, SQL*Plus, Devexpress
- Database: Microsoft SQL Server 2005, Oracle 10g
- Industry: Insurance
Architect/Software Developer
BSH Bosch Siemens Hausgeräte GmbH
- Excel templates are made available for download through an ASP.NET application, depending on permissions
- After the Excel files are edited, they are uploaded again through the same application, after which the OLAP cube is recalculated.
- Export and import of Excel files using OOXML
- Creation of ASP.NET pages using XSLT templates
- System: Windows XP
- Technologies: Microsoft .NET 4.5
- Languages: C#, ADO.NET, XML, OLAP, MDX, SSIS, ASP.NET, XSLT, XPath, OOXML 2.0, SSIS, SSRS
- Tools: Micrsoft Visual Studio .NET 2008, Microsoft Office 2010, SSMS
- Database: Microsoft SQL Server 2005/2008/2012/2014, Analysis Services
- Industry: Industry
Software Developer, Architect
Axa
- Development of an application for comprehensive customer consulting.
- Creation of a data model using the ADO.NET Entity Framework
- Use of WPF for the GUI
- Design of XAML files with Expression Blend
- Creation of automated builds with MS Build
- Creation of a setup program with Visual Studio 2008
- System: Windows XP, Windows Vista, Windows 7
- Technologies: Microsoft .NET 3.5, Silverlight 3
- Languages: C#, ADO.NET Entity Framework, XML, XSD
- Tools: Micrsoft Visual Studio .NET 2008, Infragistics, WPF Toolkit, Expression Blend 3, Team Foundation Server 2008
- Database: Microsoft SQL Server Compact Edition 3.5, Microsoft SQL Server 2008
- Industry: Insurance
Software Developer, Architect
TÜV Süd
- Development of an application with the .NET Compact Framework 3.5 for creating assessments for cars and trucks
- Synchronization of the mobile application with the server
- System: Windows XP, Windows Mobile 6.1
- Technologies: Microsoft .NET 3.5
- Languages: C#, ADO.NET, XML, XSD
- Tools: Micrsoft Visual Studio .NET 2008, Resco, Smart Device Framework
- Database: Microsoft SQL Server Compact Edition 3.5
- Industry: Manufacturing
Architect/Software Developer
BSH Bosch Siemens Hausgeräte GmbH
- Conversion of an existing Excel solution into a solution with .NET 3.5
- Analysis of the existing data in Excel and creation of a data model
- Storage of all relevant data in a SQL Server 2005 database
- Creation of a data warehouse to enable access to the data via OLAP
- Creation of dimensions, measures and measure groups with Visual Studio 2008
- Development of a WinForms application for entering data and displaying calculated fields
- System: Windows XP
- Technologies: Microsoft .NET 3.5
- Languages: C#, ADO.NET, XML, XSD, OLAP, MDX, SSIS
- Tools: Micrsoft Visual Studio .NET 2008, Microsoft Office 2003, SSMS 2005
- Database: Microsoft SQL Server 2005, Analysis Services 2005
- Industry: Manufacturing
Software Developer
MTU Aero Engines
- Development of configuration software for engine controllers with .NET 3.5 according to DO-178B
- Display of analog and digital signals from the engine controller in plots and analog gauges
- Implementation of tests
- System: Windows XP
- Technologies: Microsoft .NET 3.5
- Languages: C#, ADO.NET, XML, XSD
- Tools: Micrsoft Visual Studio .NET 2008, Dimensions, Infragistics, IOComp Plotpack, Liquid XML Studio 2008, Microsoft Word 2003
- Industry: Manufacturing
Software Developer
MobileX AG
- Further development of a mobile application with Devexpress components using the MVC pattern.
- System: Windows XP
- Technologies: Microsoft .NET 2.0
- Languages: C#, ADO.NET
- Tools: Micrsoft Visual Studio .NET 2005, Subversion, TortoiseSVN, Devexpress
- Database: SQLite
- Industry: Manufacturing
Software Developer
ThyssenKrupp Präzisionsschmiede
- Development of a framework for BDE (operational data collection)
- Reports with Crystal Reports and Visual Studio 2005.
- System: Windows XP
- Technologies: Microsoft .NET 2.0
- Languages: VB.NET, ADO.NET, PL-SQL, Crystal Reports
- Tools: Micrsoft Visual Studio .NET 2005
- Database: Oracle 9
- Industry: Manufacturing
Software Developer
Paccar Ltd.
- Extension of the MKF Framework (Modular Component Framework), which is used to develop large ASP.NET applications (>3000 PC's)
- Development of client- and server-side modules for the application.
- The application used some very large tables (>100Million)
- Creation and optimization of stored procedures (T-SQL).
- Creation of web tests and database tests using VSTS 2008.
- System: Windows 2000/XP, Windows Server 2000/2003
- Technologies: Microsoft ASP.NET 2.0, AJAX
- Languages: C#, Javascript, T-SQL, XML
- Tools: Micrsoft Visual Studio .NET 2005, TFS 2008, VSTS 2008
- Database: SQL Server 2000/2005
- Industry: Manufacturing
Software Developer
TECOPS GmbH
- Management of candidate profiles with ASP.NET 2.0 as the frontend and MS SQLServer 2005 as the back end. The main task was database modeling and the creation of stored procedures
- Creation of reports with MS SQL Server 2005 Report Services and integration into an ASP page.
- Creation of database-driven ASP pages and their optimization for large amounts of data. Use of full-text search to search for profiles.
- System: Windows XP, Windows Server 2003
- Technologies: Microsoft .NET 2.0
- Languages: C#, VB.NET, ASP.NET 2.0, T-SQL, Report Services and Notification Services of SQL Server 2005
- Tools: Micrsoft Visual Studio .NET 2005
- Database: Microsoft SQL Server 2005
- Industry: IT staffing services
Architect/Software Developer
Personal development
- Creation of a website with ASP.NET 2.0 and MS SQL Server 2000 as the database for registering DEX and providing feedback on DEX.
- DEX-Dynamic Explorer: Creation of a tool for easy access to file paths for desktop and web.
- Technologies: Microsoft ASP.NET 2.0, .NET 2.0, MFC
- Languages: C#, XML, UML, Webservice, C++, STL, Shell programming
- Tools: Visual Studio 2005, Photo Impact 11 (graphics), Platform SDK
- Database: SQL Server 2000
Architect/Software Developer
Personal development
- Creation of an invoicing program for veterinarians with Microsoft Access 2010
- Creation of a client version with Microsoft Access XP/2007/2010
- Use of SQL Server 2000 as the database
- Creation of a version with the .NET Compact Framework 2.0 for mobile devices (Pocket PC's) and use of MS SQL Server Compact as the database. Performance tuning for a large number of customers and items.
- Creation of diaries on the Pocket PC
- Entry of customers, patients, treatments and medications on the PDA
- Printing of documents on a thermal transfer printer via Pocket PC
- Development of test concepts for quality assurance
- Creation of e-invoices from the program (X-Factura, Zugferd)
- System: Windows 2000/XP/Vista/10/11, Linux, Red Hat Enterprise
- Technologies: Microsoft .NET 1.1/2.0 Winforms, .NET 8.0, Microsoft Compact Framework 2.0, Microsoft Office, .NET MAUI, Docker, XCode
- Languages: C#, VBA, XML, UML, XAML
- Tools: Microsoft Access 97/2003/2007/2010/2021, SSIS, SSRS
- Database: Access XP/2007, SQL Server 2000/2005/2008/2012/2019, SQL Server Compact Edition 3.1, Snapshot Replication
- Industry: Veterinary medicine
Software Developer
Compear AG
- Development of an application with Java for creating insurance rates
- Development of a Pocket PC application with MFC
- Languages: Java, Java Swing
- Tools: Visual Studio 6.0
- Industry: Insurance
Software Developer
Ambulante Pflegedienste
- Development of an application for outpatient care services with Microsoft Access
Architect/Software Developer
Münchner Rückversicherungs AG
- Atom-Designer: Development of a tool with Visual C++ for the interactive graphical creation of mathematical models. Models and components can be evaluated using tabular and graphical views. Implementation of interfaces to Excel and XML.
- Creation of pivot tables with Excel 2003 to evaluate accounting data in Microsoft Access.
- Anjapro: Development of the user interface for a tool for loss reserves (MFC/C++, later .NET 2.0/Oracle/Webservices). Database modeling and provision of business objects for web services. Use of a role-based access system.
- IBNR-Platform: Creation of use cases and implementation of the product in several iterations. Connection to the business data warehouse and interfaces to FSRI. Implementation of Excel exports/imports using ADO.NET. Quality assurance in TestDirector/Quality Center.
- Automation of Excel 2003, Word 2003 and PowerPoint 2003 in numerous small projects.
- RAC Review-Tool Plus: Development of an audit tool for underwriters to evaluate contracts/claims. Development of a summary tool for tabular and graphical overall evaluations. Data exchange using compressed XML files.
- RAC-Analyser: Development of a tool for creating data analyses and reports for any type of data. Evaluations with Access 2003 and Oracle 9.
- Atom-Script: Development of a tool in Visual C++ for the reserving process. Development of a C++ parser and a custom language for automatic GUI generation. Creation of a print engine for outputting tables and graphics.
- Technologies: .NET 2.0, MFC, .NET 1.1, ADO.NET, COM, XML, VBA, Excel 2003, Access 2003, Oracle 8/9/10g, SQL/PLSQL, UML.
- Tools: Visual Studio 6.0/2003/2005, Visual Source Safe, Team Foundation Server, Toad, TestDirector/Quality Center, Rational Rose, Infragistics, Dundas.
Software Developer
Fa. Käsbeitzer GmbH
- Development of an application in Microsoft Access for creating delivery notes, invoices, dunning letters and collective invoices
- Database: Microsoft Access 97/XP/2003
- Industry: Retail
Software Developer
Siemens AG
- Migration of the customer and order database PN (private networks) to SAP
- Development of an interface to SAP (adjustment of the data model, adjustment of the Oracle database, adjustment of C programs) for data transport between the server and SAP
- Languages: C, PL/SQL
- Tools: SQLplus
- Database: Oracle 7/8
- Industry: Telecommunications
Employee
IA Information Systems AG
- Development of a Java applet to display object relationships
- Development of an ActiveX control to display object relationships
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Healthcare, Information Technology, Manufacturing, Insurance, Banking and Finance, and Energy.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Product Development, Quality Assurance, Business Intelligence, and Accounting.
Skills
Databases
- Msaccess 2000/2003/2007/2010/2021
- Oracle
- Sqlserver2000/2005/2008/2012/2014/2019
- Sqlserverce/2005
- Sybase
Programming Languages/Software
- Testdirector/Quality Center
- Team Foundation Server
- .Net Compact Framework 1.0/2.0/3.5
- Excel 2003/2007
- Word 2003/2007
- Asp.Net 2.0
- C#, Vb .Net
- .Net 1.1/2.0/3.0/3.5/4.0
- Visual Basic
- Visual Studio 2005/2008/2010
- Visual Fox Pro
- Ajax
- Odbc, Dao
- Ole/Active X
- Unix Shell Scripts
- Pl/Sql, Sql
- Adsi (Active Directory Service Interface)
- Java
- Shell Programming Under Windows 95/98/Nt/2000/Xp/Vista
- Oracle Web Server
- Html
- C++, Managed C++
- Toad
- Wpf (Windows Presentation Foundation)
- Wcf (Windows Communication Foundation)
- Linq
- Nunit
- Design Patterns (Mvc, Mvp, Factory, Singleton, Facade, Mvvm)
- Analysis Services 2005, Mdx
- Reporting Services 2005
- Silverlight 4
Operating Systems
- Unix
- Windows 95/98/Nt/2000/Xp/Vista
Specialized Knowledge
- In-Depth Knowledge Of The Reinsurance Industry
- Shell Programming
- Enocean
Languages
Education
FH Regensburg
Diplom-Informatiker (FH), focus on object-oriented software development · Computer Science (Technology) · Regensburg, Germany · Gut
Statistics
Experience
Global experience
Expertise
Frequently asked questions
Have questions? Find more information here.
Stefan is based in Ottobrunn, Germany and prefers 100% remote projects.
Stefan speaks the following languages: German (Native), English (Advanced).
Stefan has at least 29 years of experience. During this time, Stefan has worked in at least 9 different roles and for 32 different companies. The average length of individual experience is 1 year and 10 months. Note that Stefan may not have shared all experience and actually has more experience.
Based on recent experience, Stefan would be well-suited for roles such as: Architect/Software Developer, Architect/Software Developer/Infrastructure, Software Developer.
Stefan's most recent position is Architect/Software Developer at Global Logistics Support GmbH.
In recent years, Stefan has worked for Global Logistics Support GmbH, HDI, G+D, In-house development, and Zeppelin Rental GmbH.
Stefan is most experienced in industries like Healthcare, Information Technology, and Manufacturing. Stefan also has some experience in Insurance, Banking and Finance, and Energy.
Stefan is most experienced in business areas like Information Technology, Product Development, and Quality Assurance. Stefan also has some experience in Business Intelligence and Accounting.
Stefan has recently worked in industries like Healthcare, Information Technology, and Manufacturing.
Stefan has recently worked in business areas like Information Technology, Product Development, and Quality Assurance.
Stefan attended FH Regensburg for Computer Science (Technology).
Stefan is immediately available full-time for suitable projects.
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The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 7 Nov 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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