C# / .NET Entwicklung
Aktualisiert am 10.03.2026
Profil
Freiberufler / Selbstständiger
Remote-Arbeit
Verfügbar ab: 10.03.2026
Verfügbar zu: 50%
davon vor Ort: 0%
C#
.NET
MS SQL Server
Back-End
ASP.NET
ADO.NET Entity Framework
Windows Presentation Foundation
Git
Visual Studio
TypeScript
React
Front-End
SpecFlow
Reqnroll
Testautomatisierung
PostgreSQL
Redis
Azure Devops
Clean Code
Functional Programming
xUnit
NUnit
System Design
German
Native
Englisch
business-fluent

Einsatzorte

Einsatzorte

Karlsruhe (+10km)
Deutschland, Schweiz, Österreich
möglich

Projekte

Projekte

3 Jahre 10 Monate
2022-02 - 2025-11

Multiple Client Projects

Freelance Senior Software Developer C# .NET MS SQL Server ...
Freelance Senior Software Developer
  • Built backend and frontend components for IoT?based smart metering platforms.
  • Developed tools for synchronization analysis and operational data processing.
  • Designed and implemented integrations (e.g., Cadooz platform) for customer reward
  • systems.
C# .NET MS SQL Server EF Core TypeScript NestJS TypeORM React Redis MongoDB InfluxDB
Schulz Informatik
Waldshut-Tiengen
17 Jahre 11 Monate
2008-01 - 2025-11

Shiftconnector® Intelligent Operations Platform

Senior Software Developer C# .NET MS SQL Server ...
Senior Software Developer
  • Designed and developed core backend and frontend features for a large-scale manufacturing operations system.
  • Designed and developed data migration tools.
  • Modernized legacy components, improving maintainability and performance.
  • Migrated large code base to async/await with over 60K lines of code changed and zero new bugs.
  • Improved performance of tenant transfers by 1570%.
  • Reduced build times by 335%.
  • Contributed to architecture decisions for new platform features.
  • Led code?quality initiatives including coding guidelines, refactoring strategies, and code reviews.
  • Mentored new developers and supported onboarding processes.
C# .NET MS SQL Server EF Core ASP.NET Core WPF SpecFlow/Reqnroll React Angular TypeScript Git Azure Devops
Bad Säckingen
11 Jahre 2 Monate
2008-02 - 2019-03

PBE ? Multi?Project/Multi?Resource Management System

Freelance Senior Software Developer C# .NET MS SQL Server ...
Freelance Senior Software Developer
  • Contributed to architecture and full?stack development of enterprise resource management solutions.
  • Modernized Silverlight and .NET components; built data?heavy user interfaces and
  • backend services.
C# .NET MS SQL Server MS Silverlight ASP.NET Windows Communication Foundation ADO.NET Entity Framework
effect-it GmbH
Karlsruhe (Baden)
2 Monate
2012-10 - 2012-11

Pharma Policy Portal

Freelance Senior Software Developer C# .NET MS SQL Server ...
Freelance Senior Software Developer
  • Developed a SharePoint portal for the management of company policies.
C# .NET MS SQL Server ASP.NET WebORB Adobe Flex
eschbach GmbH
Bad Säckingen
3 Monate
2012-08 - 2012-10

Energy Procurement System

Freelance Senior Software Developer C# .NET MS SQL Server ...
Freelance Senior Software Developer
  • Contributed to a system for the analysis of energy prices on the market and the optimization of energy procurement for production plants.
C# .NET MS SQL Server ASP.NET WebORB Adobe Flex
eschbach GmbH
Bad Säckingen
2 Jahre
2009-11 - 2011-10

Parking Meters Management Solution

Freelance Senior Software Developer C# .NET MS SQL Server ...
Freelance Senior Software Developer
  • Contributed to solution for the management an analysis of parking meters.
C# .NET MS SQL Server ASP.NET Adobe Flex WebORB
eschbach GmbH
Bad Säckingen
9 Monate
2010-02 - 2010-10

Risk Management Solution

Freelance Junior Software Developer C# .NET MS SQL Server ...
Freelance Junior Software Developer
  • Developed a solution for the management of risks in production processes.
C# .NET MS SQL Server ASP.NET WebORB Adobe Flex
eschbach GmbH
Bad Säckingen
7 Monate
2008-04 - 2008-10

Document Management System

Freelance Junior Software Developer C# .NET MS SQL Server ...
Freelance Junior Software Developer
  • Contributed to a document management suite.
C# .NET MS SQL Server WinForms NetAdvantage
Karlsruhe (Baden)

Aus- und Weiterbildung

Aus- und Weiterbildung

1 Monat
2025-11 - 2025-11

Foundational C# with Microsoft

Foundational C# with Microsoft, Microsoft
Foundational C# with Microsoft
Microsoft
1 Monat
2006-02 - 2006-02

J2SE 5.0 New Features and Behavioral Changes

SunWJT-2761, Sun
SunWJT-2761
Sun
1 Monat
2005-06 - 2005-06

Sun Certified Java Associate for the Java 2 Platform Standard Edition

Sun Certified Java Associate, Sun
Sun Certified Java Associate
Sun

Kompetenzen

Kompetenzen

Top-Skills

C# .NET MS SQL Server Back-End ASP.NET ADO.NET Entity Framework Windows Presentation Foundation Git Visual Studio TypeScript React Front-End SpecFlow Reqnroll Testautomatisierung PostgreSQL Redis Azure Devops Clean Code Functional Programming xUnit NUnit System Design

Schwerpunkte

C#
.NET
MS SQL Server
WPF
EF Core
ASP.NET Core
TypeScript
React
SQLite
MongoDB
Redis
PostgreSQL
MySQL
InfluxDB
Visual Studio
JIRA
Confluence
Git
Axure DevOps
SpecFlow/Reqnroll
NUnit
xUnit
AwesomeAssertions
NSubstitute
Serilog
Clean Code
Test Automation
Functional Programming
System Design

Produkte / Standards / Erfahrungen / Methoden

Profil

Senior software developer with over 20 years of experience in designing and building scalable, high-quality enterprise applications with C#/.NET and modern web technologies for manufacturing, industry, and data-intensive environments. Strong background in backend architecture, SQL Server, and full-stack development with ASP.NET Core, TypeScript, and React. Proven track record of improving code quality and performance, modernizing legacy systems, and consistently delivering solutions on time within agile teams. 


Tools & Technologies

  • Visual Studio 
  • JIRA 
  • Confluence 
  • Git
  • Azure 
  • DevOps 
  • SpecFlow/Reqnroll 
  • NUnit 
  • xUnit
  • AwesomeAssertions 
  • NSubstitute 
  • Serilog


Architecture & Practices

  • Clean Code 
  • Test Automation
  • Functional Programming 
  • System Design


Strengths

  • Client-focused 
  • Solution-oriented 
  • High code quality standards 
  • Clean code advocate
  • Excellent problem-solving and debugging abilities 
  • Quick learner; adapts rapidly to new technologies
  • Team player


Work Experience

1999 - 2006

Role: Software Developer

Customer: WEB. DE, united?domains AG, Intelligent Media Systems AG, and others


Tasks:

  • Developed web applications
  • e?learning systems
  • backend services
  • synchronization tools, and database?driven applications 


Skills:

Java/J2EE, Oracle, PHP, MySQL

Programmiersprachen

C#
.NET
WPF
EF Core
ASP.NET Core
TypeScript
React
Java (historical)
  

Datenbanken

MS SQL Server
SQLite
MongoDB
Redis
PostgreSQL
MySQL
InfluxDB


Einsatzorte

Einsatzorte

Karlsruhe (+10km)
Deutschland, Schweiz, Österreich
möglich

Projekte

Projekte

3 Jahre 10 Monate
2022-02 - 2025-11

Multiple Client Projects

Freelance Senior Software Developer C# .NET MS SQL Server ...
Freelance Senior Software Developer
  • Built backend and frontend components for IoT?based smart metering platforms.
  • Developed tools for synchronization analysis and operational data processing.
  • Designed and implemented integrations (e.g., Cadooz platform) for customer reward
  • systems.
C# .NET MS SQL Server EF Core TypeScript NestJS TypeORM React Redis MongoDB InfluxDB
Schulz Informatik
Waldshut-Tiengen
17 Jahre 11 Monate
2008-01 - 2025-11

Shiftconnector® Intelligent Operations Platform

Senior Software Developer C# .NET MS SQL Server ...
Senior Software Developer
  • Designed and developed core backend and frontend features for a large-scale manufacturing operations system.
  • Designed and developed data migration tools.
  • Modernized legacy components, improving maintainability and performance.
  • Migrated large code base to async/await with over 60K lines of code changed and zero new bugs.
  • Improved performance of tenant transfers by 1570%.
  • Reduced build times by 335%.
  • Contributed to architecture decisions for new platform features.
  • Led code?quality initiatives including coding guidelines, refactoring strategies, and code reviews.
  • Mentored new developers and supported onboarding processes.
C# .NET MS SQL Server EF Core ASP.NET Core WPF SpecFlow/Reqnroll React Angular TypeScript Git Azure Devops
Bad Säckingen
11 Jahre 2 Monate
2008-02 - 2019-03

PBE ? Multi?Project/Multi?Resource Management System

Freelance Senior Software Developer C# .NET MS SQL Server ...
Freelance Senior Software Developer
  • Contributed to architecture and full?stack development of enterprise resource management solutions.
  • Modernized Silverlight and .NET components; built data?heavy user interfaces and
  • backend services.
C# .NET MS SQL Server MS Silverlight ASP.NET Windows Communication Foundation ADO.NET Entity Framework
effect-it GmbH
Karlsruhe (Baden)
2 Monate
2012-10 - 2012-11

Pharma Policy Portal

Freelance Senior Software Developer C# .NET MS SQL Server ...
Freelance Senior Software Developer
  • Developed a SharePoint portal for the management of company policies.
C# .NET MS SQL Server ASP.NET WebORB Adobe Flex
eschbach GmbH
Bad Säckingen
3 Monate
2012-08 - 2012-10

Energy Procurement System

Freelance Senior Software Developer C# .NET MS SQL Server ...
Freelance Senior Software Developer
  • Contributed to a system for the analysis of energy prices on the market and the optimization of energy procurement for production plants.
C# .NET MS SQL Server ASP.NET WebORB Adobe Flex
eschbach GmbH
Bad Säckingen
2 Jahre
2009-11 - 2011-10

Parking Meters Management Solution

Freelance Senior Software Developer C# .NET MS SQL Server ...
Freelance Senior Software Developer
  • Contributed to solution for the management an analysis of parking meters.
C# .NET MS SQL Server ASP.NET Adobe Flex WebORB
eschbach GmbH
Bad Säckingen
9 Monate
2010-02 - 2010-10

Risk Management Solution

Freelance Junior Software Developer C# .NET MS SQL Server ...
Freelance Junior Software Developer
  • Developed a solution for the management of risks in production processes.
C# .NET MS SQL Server ASP.NET WebORB Adobe Flex
eschbach GmbH
Bad Säckingen
7 Monate
2008-04 - 2008-10

Document Management System

Freelance Junior Software Developer C# .NET MS SQL Server ...
Freelance Junior Software Developer
  • Contributed to a document management suite.
C# .NET MS SQL Server WinForms NetAdvantage
Karlsruhe (Baden)

Aus- und Weiterbildung

Aus- und Weiterbildung

1 Monat
2025-11 - 2025-11

Foundational C# with Microsoft

Foundational C# with Microsoft, Microsoft
Foundational C# with Microsoft
Microsoft
1 Monat
2006-02 - 2006-02

J2SE 5.0 New Features and Behavioral Changes

SunWJT-2761, Sun
SunWJT-2761
Sun
1 Monat
2005-06 - 2005-06

Sun Certified Java Associate for the Java 2 Platform Standard Edition

Sun Certified Java Associate, Sun
Sun Certified Java Associate
Sun

Kompetenzen

Kompetenzen

Top-Skills

C# .NET MS SQL Server Back-End ASP.NET ADO.NET Entity Framework Windows Presentation Foundation Git Visual Studio TypeScript React Front-End SpecFlow Reqnroll Testautomatisierung PostgreSQL Redis Azure Devops Clean Code Functional Programming xUnit NUnit System Design

Schwerpunkte

C#
.NET
MS SQL Server
WPF
EF Core
ASP.NET Core
TypeScript
React
SQLite
MongoDB
Redis
PostgreSQL
MySQL
InfluxDB
Visual Studio
JIRA
Confluence
Git
Axure DevOps
SpecFlow/Reqnroll
NUnit
xUnit
AwesomeAssertions
NSubstitute
Serilog
Clean Code
Test Automation
Functional Programming
System Design

Produkte / Standards / Erfahrungen / Methoden

Profil

Senior software developer with over 20 years of experience in designing and building scalable, high-quality enterprise applications with C#/.NET and modern web technologies for manufacturing, industry, and data-intensive environments. Strong background in backend architecture, SQL Server, and full-stack development with ASP.NET Core, TypeScript, and React. Proven track record of improving code quality and performance, modernizing legacy systems, and consistently delivering solutions on time within agile teams. 


Tools & Technologies

  • Visual Studio 
  • JIRA 
  • Confluence 
  • Git
  • Azure 
  • DevOps 
  • SpecFlow/Reqnroll 
  • NUnit 
  • xUnit
  • AwesomeAssertions 
  • NSubstitute 
  • Serilog


Architecture & Practices

  • Clean Code 
  • Test Automation
  • Functional Programming 
  • System Design


Strengths

  • Client-focused 
  • Solution-oriented 
  • High code quality standards 
  • Clean code advocate
  • Excellent problem-solving and debugging abilities 
  • Quick learner; adapts rapidly to new technologies
  • Team player


Work Experience

1999 - 2006

Role: Software Developer

Customer: WEB. DE, united?domains AG, Intelligent Media Systems AG, and others


Tasks:

  • Developed web applications
  • e?learning systems
  • backend services
  • synchronization tools, and database?driven applications 


Skills:

Java/J2EE, Oracle, PHP, MySQL

Programmiersprachen

C#
.NET
WPF
EF Core
ASP.NET Core
TypeScript
React
Java (historical)
  

Datenbanken

MS SQL Server
SQLite
MongoDB
Redis
PostgreSQL
MySQL
InfluxDB


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Im Bereich Freelancing
Im Bereich Arbeitnehmerüberlassung / Personalvermittlung

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Rufen Sie uns an +49 89 500316-300 oder schreiben Sie uns:

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