Johannes Euteneier - Freelance Software Consultant

Q: Where is Johannes based?

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

Q: What languages does Johannes speak?

Johannes speaks the following languages: German (Native), English (Advanced), Russian (Advanced) .

Q: How many years of experience does Johannes have?

Johannes has at least 26 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 and 11 months . Note that Johannes may not have shared all experience and actually has more experience.

Q: What is Johannes's latest experience?

Johannes's most recent position is Freelance Software Consultant at S|R Software GmbH & Co. KG .

Q: What companies has Johannes worked for in recent years?

In recent years, Johannes has worked for S|R Software GmbH & Co. KG , Continental AG , and valantic STI GmbH .

Q: Which industries is Johannes most experienced in?

Johannes is most experienced in industries like Information Technology (IT) , Transportation and Logistics , and Retail . Johannes also has some experience in Education , Media, Entertainment and Publishing , and Automotive .

Q: Which business areas is Johannes most experienced in?

Johannes is most experienced in business areas like Information Technology (IT) , Product Development , and Supply Chain Management . Johannes also has some experience in Research and Development (R&D) , Customer Service , and Quality Assurance (QA) .

Q: Which industries has Johannes worked in recently?

Johannes has recently worked in industries like Automotive , Information Technology (IT) , and Professional Services .

Q: Which business areas has Johannes worked in recently?

Johannes has recently worked in business areas like Information Technology (IT) and Product Development .

Recommended expert

Dreieich, Germany

Experience

May 2023 - Present

2 years 10 months

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

Nov 2022 - Present

3 years 4 months

Frankfurt, Germany

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

Feb 2021 - Oct 2022

1 year 9 months

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

Oct 2019 - Jan 2021

1 year 4 months

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

Jun 2009 - Sep 2019

10 years 4 months

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

Sep 2006 - May 2009

2 years 9 months

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

Jan 2000 - Dec 2006

7 years

Research Assistant

FernUniversität Hagen

Jan 2000 - Dec 2006

7 years

Co-founder

First Aid Computerservice GbR

Provided IT services and support

Jan 2000 - Dec 2006

7 years

QA Tester

Sunflowers

Tested games including "Anno 1503" and "Knights of Honor"

Industries Experience

See where this freelancer has spent most of their professional time. Longer bars indicate deeper hands-on experience, while shorter ones reflect targeted or project-based work.

Experienced in Information Technology (22.5 years), Transportation (10.5 years), Retail (10.5 years), Education (7 years), Media and Entertainment (7 years), and Automotive (5 years).

Information Technology

Transportation

Retail

Education

Media and Entertainment

Automotive

Business Areas Experience

The graph below provides a cumulative view of the freelancer's experience across multiple business areas, calculated from completed and active engagements. It highlights the areas where the freelancer has most frequently contributed to planning, execution, and delivery of business outcomes.

Experienced in Information Technology (26 years), Product Development (17.5 years), Supply Chain Management (10.5 years), Research and Development (7 years), Customer Service (7 years), and Quality Assurance (7 years).

Information Technology

Product Development

Supply Chain Management

Research and Development

Customer Service

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

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

German

Native

English

Advanced

Russian

Advanced

Education

Apr 2004 - Mar 2006

FernUniversität Hagen

Master of Science, Computer Science · Computer Science · Hagen, Germany · Very Good

Oct 2000 - Mar 2004

University of Applied Sciences Darmstadt

Bachelor of Science, Computer Science · Computer Science · Darmstadt, Germany · Good

Profile

Created

August 2025

Last Update

August 2025

Need a freelancer? Find your match in seconds.

Try FRATCH GPT

Frequently asked questions

Do you have questions? Here you can find further information.

Where is Johannes based?

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

What languages does Johannes speak?

Johannes speaks the following languages: German (Native), English (Advanced), Russian (Advanced).

How many years of experience does Johannes have?

Johannes has at least 26 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 and 11 months. Note that Johannes may not have shared all experience and actually has more experience.

What roles would Johannes be best suited for?

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.

What is Johannes's latest experience?

Johannes's most recent position is Freelance Software Consultant at S|R Software GmbH & Co. KG.

What companies has Johannes worked for in recent years?

In recent years, Johannes has worked for S|R Software GmbH & Co. KG, Continental AG, and valantic STI GmbH.

Which industries is Johannes most experienced in?

Johannes is most experienced in industries like Information Technology (IT), Transportation and Logistics, and Retail. Johannes also has some experience in Education, Media, Entertainment and Publishing, and Automotive.

Which business areas is Johannes most experienced in?

Johannes is most experienced in business areas like Information Technology (IT), Product Development, and Supply Chain Management. Johannes also has some experience in Research and Development (R&D), Customer Service, and Quality Assurance (QA).

Which industries has Johannes worked in recently?

Johannes has recently worked in industries like Automotive, Information Technology (IT), and Professional Services.

Which business areas has Johannes worked in recently?

Johannes has recently worked in business areas like Information Technology (IT) and Product Development.

What is Johannes's education?

Johannes holds a Master in Computer Science from FernUniversität Hagen and a Bachelor in Computer Science from University of Applied Sciences Darmstadt.

What is the availability of Johannes?

Johannes is immediately available part-time for suitable projects.

What is the rate of Johannes?

Johannes's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.