Ulrich Proeller - Software Architect for .NET Cloud Systems

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Friedberg, Germany

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Experience

Jul 2023 - Jun 2025

2 years

Software Architect

Carl Zeiss SMT

Development of a modular application framework as the future foundation and for consolidating more than 500 in-house applications.
Role: Software Architect.
Process: Scrum, 9-person team, clean code principles.
Technologies: Visual Studio 2022, Git, C# 12, .NET 8.0, WPF, MVVM, xUnit, WIX-Toolset 4, Visual Studio Templating, Enterprise Architect, REST services, SignalR, SAP, Oracle DB, OAuth 2.0, OpenId.

May 2021 - May 2023

2 years 1 month

Architecture and Development

Carl Zeiss Microscopy

Development of a suite installer (comparable to the Microsoft Visual Studio Installer) for deploying the ZEISS Microscopy Software Suite.
Role: Architecture and Development.
Process: Scrumban, 12-person team, clean code principles.
Technologies: Visual Studio 2022, C# 9, .NET 6.0, WPF, MVVM, Windows Azure, WIX-Toolset, OpenId.

Mar 2021 - May 2021

3 months

Developer

COPiTOS GmbH

Development and maintenance of in-house software for securities management.
Role: Development.
Technologies: Visual Studio 2019, C#, Windows Forms.

Feb 2020 - Aug 2020

7 months

External Developer

Renk Test System, MAN-Gruppe, Augsburg

Further development of the configuration, control, and monitoring software for complex industrial gearbox test benches.
Improving the usability of the existing applications.
Role: External Developer.
Process: Agile, 10-person team, clean code principles.
Technologies: Visual Studio 2019, C#, .NET Framework 4.8, WPF, MVVM, WCF, PRISM, DevExpress WPF, Entity Framework 6, NUnit, MS SQL Server, Git.

Jan 2020 - Feb 2020

2 months

External Consultant

ARZ, Darmstadt

Analysis and optimization of a complex WPF application with regard to the performance of the DevExpress WPF controls.
Role: External Consultant.
Technologies: C#, WPF, MVVM, DevExpress WPF and XPO controls, Visual Studio 2019, SVN, .NET Framework 4.5, Windows 10, Oracle SQL Server, NLog.

Jan 2016 - Sep 2019

3 years 9 months

Software Architect, Project Responsibility

Pharmatechnik, Starnberg

Set up and developed an Azure cloud-based billing center for pharmacies.
Responsible for software architecture and framework development.
Integrated an IBML high-performance scanner.
Developed a web application for customers.
Integrated the in-house IXOS merchandise management software.
Responsible for the smooth billing of prescriptions worth over 1 billion EUR per year.
Role: Software Architect, Project Responsibility.
Process: Scrum, 10-person team, clean code principles.
Technologies: Windows Azure, C#, Micro Services, WCF, WPF, MVVM, Visual Studio 2019, TFS, .NET Framework 4.7, Windows 10, SQL Server 2016, Entity Framework, Log4net, NUnit, PowerShell, Enterprise Architect, IBML.

Jul 2012 - Dec 2015

3 years 6 months

System Architect

Renk Test System, MAN Group, Augsburg

Complete redevelopment of the configuration, control, and monitoring software for complex industrial gearbox test benches.
Developed a visual editor for connecting electronic components.
Role: System architecture, selection of software components, implementation of the GUI with a graphical editor (WPF), the server (WCF), and the data layer (Entity Framework).
Process: Agile, 5-person team, clean code principles.
Technologies: Visual Studio 2013, C#, .NET Framework 4.5, WPF, MVVM, WCF, PRISM, DevExpress DXperience, Entity Framework 6, NHibernate, MS SQL Server 2014, TFS 2013, NUnit, C++.

Mar 2012 - Jun 2012

4 months

Architect

devworx, Augsburg

Architecture and selection of components for an application used to create customized document collections for the publishing industry.
Implemented user interfaces and data layers.
Role: Architecture, selection of components, implementation of user interfaces and data layers.
Process: Agile, 5-person team.
Technologies: Visual Studio 2012 and 2010, C#, .NET Framework 4.5 and 4.0, WPF, MVVM, DevExpress DXperience, Entity Framework 4.3, MS SQL Server Compact 4.0, TFS 2012.

Jun 2011 - Dec 2011

7 months

Software Architect

Technolas Perfect Vision GmbH, Munich

Redesigned the user interface and control system for a therapeutic eye laser.
Architecture and implementation of the WPF interface.
Connected the control computer via SOAP.
TFS administration and programming.
Role: Software Architect.
Process: Scrum, 15-person team.
Technologies: Visual Studio 2010, C#, C++, .NET Framework 4.0, WPF, WCF, TFS 2010, SQL Server, NUnit.

Mar 2011 - May 2011

3 months

Software Developer

Munich RE AG, Munich

Further development of an underwriting platform for facultative risks.
Role: Software Developer.
Process: Agile, 12-person team.
Technologies: Visual Studio 2008, C#, .NET Framework 3.5, WCF, Windows Forms, WPF, Team Foundation Server 2010, Oracle, Infragistics NetAdvantage.

Dec 2010 - Aug 2016

5 years 9 months

Architecture and Development

RWB AG, Oberhaching

Development of sales and administration applications using WPF and Windows Forms.
Development of web applications using ASP.NET MVC3.
Development of industry-specific software for the investment sector.
Role: Architecture and Development.
Technologies: Visual Studio 2010, C#, .NET Framework 4.0, ASP.NET MVC3, WPF, DevExpress WPF, SQL Server, NHibernate, Windows Forms, Telerik RadControls for WinForms, TFS 2010.

Oct 2010 - Nov 2010

2 months

Software Architect

Lauer-Fischer Fürth

Architectural analysis of a new application platform.
Design of a LINQ provider for distributed domain objects.
Development of the basic infrastructure for a distributed enterprise application.
Role: Software Architect.
Process: Agile, 10-person team.
Technologies: Visual Studio 2010, C#, .NET Framework 4.0, Team Foundation Server 2010, MS SQL Server 2008, LINQ, WPF, Silverlight, NLog, NUnit.

Apr 2010 - Sep 2010

6 months

Software Architect

Intercom, Vienna

Architecture and implementation of a generic view framework.
Extension and optimization of the existing OR mapper.
Integration of Oracle with the OR mapper.
New development of an electronic records management system for the Austrian Federal Ministry of Education and the Austrian state school authorities.
Role: Software Architect.
Process: Scrum, 10-person team.
Technologies: Visual Studio 2008, Team Foundation Server 2008, Oracle DB Server 10 and 11, C#, .NET Framework 3.5, DevExpress DXperience 9.3 Windows Forms, NLog, LINQ, NUnit.

Jan 2010 - Mar 2010

3 months

Software Architect

Cassidian - EADS Defense & Security - Military Air Systems

Development of a .NET control based on Log4View for integration into proprietary software solutions.
Project: Control Center.
Role: Software Architect.
Technologies: Visual Studio 2010, Team Foundation Server 2010, C#, WCF, .NET Framework 3.5, DevExpress DXperience 9.3 Windows Forms, Log4net, LINQ, C5 Collections, NUnit.

Nov 2008 - Mar 2009

5 months

Consultant

Siemens Medical Solutions GSD GmbH, Berlin

Training and development with Infragistics NetAdvantage Windows Forms.
Development of operating room planning software for hospitals.
Role: Consultant.
Process: Agile, 4-person team.
Technologies: Visual Studio .NET 2005, SVN, C#, Windows Forms, SAP/R3, .NET Framework 3.0, Windows Vista, Infragistics NetAdvantage.

May 2007 - Dec 2009

2 years 8 months

Software Architect

Pharmatechnik, Starnberg

Architecture of the NHibernate database layer.
Architecture and implementation of redundant data storage to increase fault tolerance (SQL Server 2008 R2).
New development of an enterprise resource planning system for pharmacies.
Role: Software Architect.
Process: Scrum, 18–25-person team.
Technologies: Visual Studio 2008, Team Foundation Server 2008, C#, WCF, WPF, .NET Framework 3.5, Windows Server, SQL Server 2008, NHibernate, Log4net, NUnit, Infragistics NetAdvantage, Enterprise Architect.

Jan 2005 - May 2007

2 years 5 months

Subproject Manager and Software Architect

Bosch Sicherheitssysteme GmbH, Ottobrunn near Munich

New development of a complex, highly scalable and extensible video management system for up to 10,000 cameras, with high requirements for runtime performance, security and system stability (24/7/365).
Architecture and implementation of the central server for event processing and the decentralized servers for video recording.
Architecture of the communication structure and server components.
Implementation of central server modules.
Role: Subproject Manager and Software Architect.
Process: Agile, 16-person team.
Technologies: Visual Studio .NET 2005, Team Foundation Server, C#, .NET Remoting, Windows Forms, .NET Framework 3.0, Windows Server 2003, SQL Server 2005, Genuine Channels, Log4net, Infragistics Framework, Enterprise Architect.

Feb 2003 - Dec 2004

1 year 11 months

Software Architect, PC Frontend Development

Agfa Gevaert AG, Munich

Development of an X-ray scanner.
Development of an XML-based meta-language and a code generator.
Migration from COM+ to .NET.
Development of a remoting server.
Implementation of user interfaces.
Development of a TWAIN driver.
Role: Software Architect, PC frontend development for a medical scanner.
Process: Waterfall, 8-person team.
Technologies: Visual Studio .NET 2003, C#, Managed and Unmanaged C++, .NET Remoting, Windows Forms, .NET Framework 1.1, Windows XP, Genuine Channels, Log4net, .NET Charting Library, OOP.

Dec 2002 - Mar 2004

1 year 4 months

Project Manager

Bündnis 90 / Die Grünen, Landesverband Bayern

Design, implementation and maintenance of an application for financial management.
Automated creation of officially recognized donation receipts.
Role: Project Manager.
Technologies: Microsoft Visual Studio 2003, C#, .NET Framework, ADO.NET, Windows Forms, XML, Visual Studio .NET, Windows XP, MS Excel.

Jul 2002 - Nov 2002

5 months

Senior Developer

OCÉ Printing Systems Poing near Munich, Printing Technology

Design and implementation of a relational database model for transferring data from an IBM host-based enterprise resource planning system.
Implementation of data validation and data transfer tools.
Design and implementation of a Windows expert interface with a remoting-enabled database connection.
Role: Senior Developer.
Technologies: C#, .NET Framework, ADO.NET, Windows Forms, .NET Remoting, Visual Studio .NET, MS SQL Server 2000, Windows XP.

Feb 2000 - Jun 2002

2 years 5 months

Software Architect, Sub-Project Manager

Bosch Telecom GmbH, Ottobrunn, Telecommunications & Security Technology

Architecture and implementation of an internet-enabled security and building management system.
Architecture and development of a library for secure and fast interprocess communication over the internet.
Development of internet clients.
Role: Software Architect, Sub-Project Manager.
Technologies: Windows 2000, Visual C++ 6.0, Visual Studio .NET, C#, MFC, STL, .NET Framework, XML, HTML, MS SQL Server, ActiveX, AutoDesk Whip, CryptLib++, TCP/IP, Sockets, HTTP, Internet Information Server, ISAPI, Apache, AES, SRP, Lead Tools.

Feb 1999 - Jan 2000

1 year

Senior Developer

Bosch Telecom, Telecommunications & Security Technology

Architecture and implementation of the communication layer of an alarm management system for the German state central banks.
Role: Senior Developer.
Technologies: Windows NT, Visual C++ 5.0, MFC, STL, POET.

Jan 1998 - Jan 1999

1 year 1 month

Software Architect, Senior Developer

Giesecke & Devrient, Munich, Securities Printing

Architecture and specification of a 3-tier client/server production system for EC cards.
Implementation of the user interface.
Implementation of the business logic.
Development of the communication library.
Role: Software Architect, Senior Developer.
Technologies: Windows NT, Visual C++ 5.0, MFC, Oracle, UML.

Aug 1996 - Dec 1997

1 year 5 months

Developer

Giesecke & Devrient, Munich, Securities Printing

Development of a production system for laser-personalized ID cards.
Development of a client/server system with a database-driven GUI front end.
Role: Developer.
Technologies: Windows NT, Visual C++ 5.0, MFC, Oracle.

Jul 1995 - Jun 1996

1 year

Project Manager

Institute for Pharmacodynamic Research, Munich

Development of a client/server application for managing pharmacological studies.
Project management, software architecture, and implementation of core components.
Role: Project Manager.
Technologies: Windows NT, Visual C++ 4.0, MFC.

Jan 1993 - Dec 1995

3 years

IT Manager

Institute for Pharmacodynamic Research, Munich

Development of integrated statistical software for analysis of variance and graphical presentation of pharmacological studies.
Development of hardware and software for laser control in the medical field.
Role: IT Manager.
Technologies: Windows 3.1, Windows NT, Borland Pascal.

Jan 1989 - Dec 1992

4 years

Project Manager

CD im Asamhof, Munich

Architecture and development of a multi-user inventory management system, including database.
Development of a multitasking kernel and network drivers.
Role: Project Manager.
Technologies: MS-DOS, Borland Pascal.

Jan 1978 - Dec 1989

12 years

Freelance Software Developer and Statistician

Bishop's Ordinariate Augsburg, Dornier Medical Technology Germering, Katharinen Hospital Stuttgart, LMU Munich (various

Development of business analysis software.
Conducting scientific statistical analyses.
Development of clinical patient management and other applications.
Role: Freelance Software Developer and Statistician.
Technologies: COBOL, Z80 Assembly, MS-DOS, Borland Pascal, SPSS, BMDP, dBASE.

Industry experience

See where this freelancer has spent most of their professional time.

Experienced in Healthcare, Information Technology, Government and Administration, Manufacturing, Education, and Pharmaceutical.

Healthcare

Information Technology

Government and Administration

Manufacturing

Education

Pharmaceutical

Business area experience

See which departments and functions this freelancer has contributed to most.

Experienced in Information Technology, Product Development, Research and Development, Project Management, Business Intelligence, and Finance.

Information Technology

Product Development

Research and Development

Project Management

Business Intelligence

Finance

Summary

I have been working as a developer and software architect for more than 40 years, with my own GmbH since 1999. During this time, I have successfully completed numerous projects. Nevertheless, I never stop improving. My specialties are complex multi-tier/cloud architectures, applications with high performance and stability requirements, and hardware integration.

As the creator of the internationally successful Log4View® software (development and sales), I have proven practical experience in all phases of software development.

Friendly, clear manner and strong persuasive skills.

Optics, pharmacy software, mechanical engineering, medical technology, security technology.

Building and managing small development teams; selecting the necessary design, development, and quality assurance tools.

Regular attendance at developer conferences (MS Build, PDC, Tech-Ed);

Author of publications in the trade press.

Skills

Methodologies

Agile Processes (Scrum, Scrumban), Unit Testing, Microservices, Event Bus & Message Queuing, Microsoft Patterns & Practices

Languages, Tools, Apis

C#, .Net Core & Framework, Wpf, Linq, Ms Visual Studio, Wcf, Windows Forms, Xunit, C++, Powershell, Postsharp, …

Platforms

Windows Azure, Windows Server, Windows

Databases

Ms Sql Server, Entity Framework, Dapper, Nhibernate, Oracle

.Net Gui Libraries

Devexpress, Infragistics, Telerik

Application Lifecycle Tools

Azure Devops, Microsoft Dev Ops, Git, Wix-Toolset, Tfs

Languages

German

Native

English

Advanced

French

Elementary

Education

LMU München

Diplom-Psychologe · Psychology · Munich, Germany

Certifications & licenses

ScrumAlliance

Statistics

Experience

Total positions 28

Experience in Healthcare 20.5 y

Avg length 1 y 11 m

Longest experience 11 y 11 m

Expertise

Recent roles Software Architect, Architecture and Development, Developer

Main industries Healthcare, Information Technology, Government and Administration

Main business areas Information Technology, Product Development, Research and Development

Qualifications

Highest degree Master

Certifications earned 2

Profile

Member since

October 2025

Last update

October 2026

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Frequently asked questions

Have questions? Find more information here.

Ulrich is based in Friedberg, Germany and can operate in on-site, hybrid, and remote work models.

Ulrich speaks the following languages: German (Native), English (Advanced), French (Elementary).

Ulrich has at least 46 years of experience. During this time, Ulrich has worked in at least 18 different roles and for 25 different companies. The average length of individual experience is 2 years and 8 months. Note that Ulrich may not have shared all experience and actually has more experience.

Based on recent experience, Ulrich would be well-suited for roles such as: Software Architect, Architecture and Development, Developer.

Ulrich's most recent position is Software Architect at Carl Zeiss SMT.

In recent years, Ulrich has worked for Carl Zeiss SMT and Carl Zeiss Microscopy.

Ulrich is most experienced in industries like Healthcare, Information Technology, and Government and Administration. Ulrich also has some experience in Manufacturing, Education, and Pharmaceutical.

Ulrich is most experienced in business areas like Information Technology, Product Development, and Research and Development. Ulrich also has some experience in Project Management, Business Intelligence, and Finance.

Ulrich has recently worked in industries like Manufacturing.

Ulrich has recently worked in business areas like Information Technology and Product Development.

Ulrich holds a Master in Psychology from LMU München.

Ulrich has 2 certificates. These include: Certified ScrumMaster (CSM) and Microsoft Certified Professional (MCP).

The availability of Ulrich needs to be confirmed.

Daily rate distribution

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Average rates for similar positions

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Daily rate avg. 1050 €

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Median rate 1020 €

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 17 Oct 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.