Thomas Fritz - Senior Fullstack Developer .NET...

Q: Where is Thomas based?

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

Q: What languages does Thomas speak?

Thomas speaks the following languages: German (Native), English (Elementary) .

Q: How many years of experience does Thomas have?

Thomas has at least 22 years of experience. During this time, Thomas has worked in at least 3 different roles and for 10 different companies . The average length of individual experience is 1 year . Note that Thomas may not have shared all experience and actually has more experience.

Q: What is Thomas's latest experience?

Thomas's most recent position is Senior Fullstack Developer at DB InfraGO AG .

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

In recent years, Thomas has worked for DB InfraGO AG and DB Netz AG / DB InfraGO AG .

Q: Which industries is Thomas most experienced in?

Thomas is most experienced in industries like Transportation , Telecommunication , and Healthcare . Thomas also has some experience in Insurance , Manufacturing , and Education .

Q: Which business areas is Thomas most experienced in?

Thomas is most experienced in business areas like Information Technology , Product Development , and Operations . Thomas also has some experience in Quality Assurance and Project Management .

Q: Which industries has Thomas worked in recently?

Thomas has recently worked in industries like Transportation .

Q: Which business areas has Thomas worked in recently?

Thomas has recently worked in business areas like Information Technology and Operations .

Recommended expert

Rodgau, Germany

Experience

Jan 2025 - Dec 2025

1 year

Frankfurt, Germany

Remote

Senior Fullstack Developer

DB InfraGO AG

Frontend: new development in Angular
Backend: new development in ASP.NET Web API
Database: modeling, implementation, and operation based on Microsoft SQL Server
Requirements management, design, and implementation
Deployment, maintenance, operation
Knowledge transfer to internal staff
Agile development (SCRUM)

Aug 2020 - Dec 2025

5 years 5 months

Frankfurt, Germany

Remote

Senior Fullstack Developer

DB Netz AG / DB InfraGO AG

Frontend: new development in Angular
Backend: new development in ASP.NET Web API to provide data for frontend services
Database: modeling, implementation, and operation based on Microsoft SQL Server
New development based on an existing WPF application
Requirements management, design, and implementation
Identity/access management (account administration, authorization)
Deployment, maintenance, operation
Knowledge transfer to internal staff
Consulting on full-stack architecture decisions and designing new requirements
Conducting code reviews, debugging, and performance optimization
Agile development (SCRUM)

Jan 2020 - Mar 2020

3 months

Senior Fullstack Developer

SG Service GbR

Concept and documentation
Frontend: new development in Angular
Backend: new development in ASP.NET Web API
Agile development (SCRUM)

Aug 2019 - Dec 2019

5 months

Senior Fullstack Developer

Dentsply Sirona

Configuration Management
Implementation and prototyping
Integration
Agile development (SCRUM)

Aug 2018 - Jul 2019

1 year

Sabbatical

Self-employed

Travel through 8 countries

Jan 2018 - Jul 2018

7 months

Senior Fullstack Developer

Dentsply Sirona

Requirements management
Implementation and prototyping
Integration

Dec 2017 - May 2018

6 months

Senior Fullstack Developer

Dentsply Sirona

Requirements management
Implementation
Concept and documentation
Integration

Mar 2016 - Dec 2017

1 year 10 months

Senior Fullstack Developer

Dentsply Sirona

Requirements management
Technical project management
Implementation and prototyping

Mar 2016 - Dec 2017

1 year 10 months

Senior Fullstack Developer

Dentsply Sirona

Requirements management
Technical project management
Implementation and prototyping
Concept and documentation
Test supervision

Apr 2014 - Dec 2015

1 year 9 months

Senior Fullstack Developer

Dentsply Sirona

Requirements management
Concept and documentation
Implementation and integration

Oct 2013 - Mar 2014

6 months

Senior Fullstack Developer

Dentsply Sirona

Requirements management
Technical architecture
Design and implementation
Integration

Aug 2013 - Sep 2013

2 months

Training

Self-employed

Scrum training with final certification exam as Certified Scrum Master (CSM)
Training and advanced training for WPF (Windows Presentation Foundation)

Apr 2010 - Jun 2013

3 years 3 months

Senior Fullstack Developer

Deutsche Telekom AG

Requirements management
Technical architecture
Design and development
Maintenance and operation

Apr 2008 - Mar 2010

2 years

Senior Fullstack Developer

Deutsche Telekom AG

Technical architecture
Design
Implementation

Sep 2007 - Mar 2008

7 months

Senior Fullstack Developer

Deutsche Post AG

Quality assurance and test framework
Test management

Apr 2007 - Aug 2007

5 months

Senior Fullstack Developer

Deutsche Post AG

Source code analysis of the existing application
Taking over the application for maintenance
Design and further development
Test support

Jun 2005 - May 2006

1 year

Senior Fullstack Developer

MORGEN & MORGEN GmbH

Concept
Implementation

Jan 2005 - Apr 2005

4 months

Senior Fullstack Developer

MORGEN & MORGEN GmbH

Concept
Technical leadership
Implementation

Aug 2004 - Mar 2007

2 years 8 months

Senior Fullstack Developer

MORGEN & MORGEN GmbH

Framework development
Framework architecture and design
Training development teams

Mar 2004 - Jul 2004

5 months

Senior Fullstack Developer

Adam Opel AG / Dürr-Schenck Engineering

Requirements management
Concept
Implementation

Mar 2004 - Jul 2004

5 months

Senior Fullstack Developer

TU Darmstadt

Requirements analysis
Design and implementation
Integration into an existing system

Aug 2002 - Aug 2003

1 year 1 month

Senior Fullstack Developer

TU Darmstadt

Requirements analysis
Design and implementation
Integration into an existing system

Industry Experience

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

Experienced in Transportation, Healthcare, Telecommunication, Insurance, Manufacturing, and Education.

Transportation

Healthcare

Telecommunication

Insurance

Manufacturing

Education

Business Area Experience

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

Experienced in Information Technology, Operations, Product Development, Quality Assurance, and Project Management.

Information Technology

Operations

Product Development

Quality Assurance

Project Management

Summary

As a freelance software developer & IT consultant with over 20 years of experience, I deliver modern software applications based on up-to-date technologies. I design and implement projects agilely using SCRUM – from requirement engineering through architecture and coding to release.

Skills

Software Development And Architecture, System Integration, Interface Specification
Angular With Typescript, Angular Material, Visual Studio Code
Asp.net Web Api With .Net, C#, Visual Studio
Wpf (Windows Presentation Foundation) With .Net, C#, Visual Studio
Database Modeling And Programming With Sql Server
Methods & Tools: Agile Approach, Scrum, Clean Code Development
Ajax
Altova Xmlspy
Aris Uml Designer
Asp.net Mvc
Automapper
Blazor
Bootstrap
Bruno
Bugzilla
Css
Dicom
Dependency Injection (Prism, Unity)
Entity Framework
Expression Blend
Finalbuilder
Flash
Flash Remoting Mx
Git
Github
Html5
Internet Information Services (Iis)
Javascript
Jira
Json
Linq
Log4net
Mvvm
Microsoft Access
Microsoft Biztalk Server
Microsoft Enterprise Library
Microsoft Integration Services (Ssis)
Microsoft Reporting Services (Ssrs)
Microsoft Sql Server Management Studio
Microsoft Team Foundation Server (Tfs)
Microsoft Visual Studio
Microsoft Visual Studio Code
Microsoft .Net Compact Framework
Nant
Ng2-charts
Nunit
Nuget
Node.js
Polarion
Postman
Razor
Resharper
Rest Api
Rest Services
Responsive Design
Rxjs
Scss
Serena Dimensions
Soap
Sql
Sql Delta
Sqlite
Sparx Enterprise Architect
Stored Procedures
Subversion (Svn)
Swagger
Teamcity
Telerik Ui Controls
Together
T-sql
Uml
Unit Testing
Unity
Vb.net
Vba
Visio
Visual Sourcesafe
Wcf (Windows Communication Foundation)
Windows Forms
Windows Installer Xml Toolset (Wix)
Xaml
Xml
Xml-webservices
Xslt
Xunit

Languages

German

Native

English

Elementary

Education

TU Darmstadt

Diploma Engineer, specialization in Computer Science · Civil Engineering · Darmstadt, Germany

Certifications & licenses

Certified Scrum Master (CSM)

Scrum Alliance

BizT@lk University Certificate

ITIL Foundation Certificate

Microsoft Certified Technology Specialist BizTalk

NLP Practitioner

Windows Communication Foundation, Master Class

Statistics

Experience

Total positions 22

Experience in Transportation 6.5 y

Avg length 1 y 2 m

Longest experience 5 y 4 m

Global Experience

Countries worked in 1 (Germany)

Primary country Germany

Expertise

Recent roles Senior Fullstack Developer, Sabbatical, Training

Main industries Transportation, Healthcare, Telecommunication

Main business areas Information Technology, Operations, Product Development

Qualifications

Highest degree Master

Certifications earned 6

Profile

Created

January 2026

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Frequently asked questions

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

Where is Thomas based?

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

What languages does Thomas speak?

Thomas speaks the following languages: German (Native), English (Elementary).

How many years of experience does Thomas have?

Thomas has at least 22 years of experience. During this time, Thomas has worked in at least 3 different roles and for 10 different companies. The average length of individual experience is 1 year. Note that Thomas may not have shared all experience and actually has more experience.

What roles would Thomas be best suited for?

Based on recent experience, Thomas would be well-suited for roles such as: Senior Fullstack Developer, Sabbatical, Training.

What is Thomas's latest experience?

Thomas's most recent position is Senior Fullstack Developer at DB InfraGO AG.

What companies has Thomas worked for in recent years?

In recent years, Thomas has worked for DB InfraGO AG and DB Netz AG / DB InfraGO AG.

Which industries is Thomas most experienced in?

Thomas is most experienced in industries like Transportation, Telecommunication, and Healthcare. Thomas also has some experience in Insurance, Manufacturing, and Education.

Which business areas is Thomas most experienced in?

Thomas is most experienced in business areas like Information Technology, Product Development, and Operations. Thomas also has some experience in Quality Assurance and Project Management.

Which industries has Thomas worked in recently?

Thomas has recently worked in industries like Transportation.

Which business areas has Thomas worked in recently?

Thomas has recently worked in business areas like Information Technology and Operations.

What is Thomas's education?

Thomas holds a Master in Civil Engineering from TU Darmstadt.

Does Thomas have any certificates?

Thomas has 6 certificates. Among them, these include: Certified Scrum Master (CSM), BizT@lk University Certificate, and ITIL Foundation Certificate.

What is the availability of Thomas?

Thomas is immediately available part-time for suitable projects.

What is the rate of Thomas?

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