Johannes Euteneier-Freelance Software Consultant
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Experience
Freelance Software Consultant
S|R Software GmbH & Co. KG
- Provided consulting for modernizing legacy applications
- Delivered critical features under tight deadlines for backend and frontend
- Technologies: C#, .NET, WPF, WCF, REST, Angular, MS SQL Server
Freelance Senior Software Engineer
Continental AG
- Designed and implemented distributed, full-stack applications for automated ECU flashing, production control, and system monitoring
- Delivered scalable and maintainable backend and frontend architectures using .NET and Angular
- Built and maintained CI/CD pipelines in Azure DevOps and containerized applications with Docker
- Integrated Blockly to enable configurable, domain-specific workflow logic in production environments
- Technologies: .NET 6-9, C#, Angular 2+, WinForms, WPF, Docker, Azure DevOps, REST, RabbitMQ, MQTT, SignalR, Keycloak, PostgreSQL, Oracle, Elasticsearch, Blockly
Senior IT Consultant / Software Developer
valantic STI GmbH
- Delivered software for ECU flashline systems with a focus on cybersecurity at Continental
- Refactored and optimized administrative tools for the City of Frankfurt
- Enhanced internal tools and services
- Technologies: C#, WinForms, Blazor, SQL Server, Oracle, Azure DevOps, Azure Cloud
Technical Project Lead / Software Developer
IQ-Optimize Software AG
- Led development of campaign and customer retention tools
- Refactored and optimized a high-volume SIM card ordering application to improve performance and scalability
- Designed data cleanup and archival utilities
- Migrated legacy WinForms to ASP.NET MVC
- Technologies: C#, .NET Framework, ASP.NET MVC, WinForms, Informix, MySQL, MS SQL Server, Netezza, Linux/Bash
Software Architect & Developer
S|R Software GmbH & Co. KG
- Designed and developed a complete rental, POS, and warehouse management system, including a touch-optimized interface, backend API, and the migration from a monolithic application to a scalable client-server architecture
- Migrated databases from Jet to MS SQL Server with custom tooling
- Integrated various third-party APIs and device drivers
- Technologies: WPF, C#, .NET Framework/Core, WCF, ASP.NET, WinForms, VB6, MS SQL Server, Jet, Access, List & Label, SOAP, REST, XML
Software Developer
pawisda systems GmbH
- Developed low-level backend services and drivers for document and print management
- Built a PDF library in C++ and fax server under SuSE Linux
- Technologies: C++, C, Tcl/Tk, PostgreSQL, PHP, HTML, NSIS, MSI, SuSE Linux
Research Assistant
FernUniversität Hagen
Co-founder
First Aid Computerservice GbR
Provided IT services and support
QA Tester
Sunflowers
Tested games including "Anno 1503" and "Knights of Honor"
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Information Technology, Transportation, Retail, Education, Media and Entertainment, and Automotive.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Product Development, Supply Chain Management, Research and Development, Customer Service, and Quality Assurance.
Summary
Senior Software Engineer and Architect with 20 years of experience in designing, developing, and modernizing business-critical applications. Specialized in Microsoft technologies (.NET Core, C#) and modern frontend frameworks like Angular. Extensive experience in full-stack development, technical project leadership, and systems used in the automotive domain. Proven track record in building distributed and scalable solutions for automotive production environments, with a focus on ECU flashing, monitoring, and control systems.
Skills
Languages
- C#, Typescript, Javascript, C/C++, Vb6, Html, Css
Frameworks/Tools
- Angular, .Net, Wpf, Winforms, Wcf, Blazor, Rest, Soap, Git, Azure Devops, Blockly
Architecture & Methodology
- Mvvm, Mvc, Ooa/Ood, Tdd, Agile (Scrum), V-Model
OS
- Windows (Client/Server), Linux
Databases
- Ms Sql Server, Mysql, Postgresql, Oracle, Informix, Netezza, Access, Sqlite
Ci/Cd & Devops
- Azure Devops, Docker, Git, Jenkins (Basic)
Languages
Education
FernUniversität Hagen
Master of Science, Computer Science · Computer Science · Hagen, Germany · Very Good
University of Applied Sciences Darmstadt
Bachelor of Science, Computer Science · Computer Science · Darmstadt, Germany · Good
Statistics
Experience
Global experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
Johannes is based in Dreieich, Germany and can operate in on-site, hybrid, and remote work models.
Johannes speaks the following languages: German (Native), English (Advanced), Russian (Advanced).
Johannes has at least 27 years of experience. During this time, Johannes has worked in at least 9 different roles and for 8 different companies. The average length of individual experience is 3 years. Note that Johannes may not have shared all experience and actually has more experience.
Based on recent experience, Johannes would be well-suited for roles such as: Freelance Software Consultant, Freelance Senior Software Engineer, Senior IT Consultant / Software Developer.
Johannes's most recent position is Freelance Software Consultant at S|R Software GmbH & Co. KG.
In recent years, Johannes has worked for S|R Software GmbH & Co. KG, Continental AG, and valantic STI GmbH.
Johannes is most experienced in industries like Information Technology, Transportation, and Retail. Johannes also has some experience in Education, Media and Entertainment, and Automotive.
Johannes is most experienced in business areas like Information Technology, Product Development, and Supply Chain Management. Johannes also has some experience in Research and Development, Customer Service, and Quality Assurance.
Johannes has recently worked in industries like Automotive, Information Technology, and Professional Services.
Johannes has recently worked in business areas like Information Technology and Product Development.
Johannes holds a Master in Computer Science from FernUniversität Hagen and a Bachelor in Computer Science from University of Applied Sciences Darmstadt.
The availability of Johannes needs to be confirmed.
Daily rate distribution
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Average rates for similar positions
Rates are based on recent contracts and do not include FRATCH margin.
The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
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 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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