Michael Trapp - Freelance Software Engineer .NET C#

Q: Where is Michael based?

Michael is based in Hambrücken, Germany .

Q: What languages does Michael speak?

Michael speaks the following languages: German (Native), English (Intermediate) .

Q: How many years of experience does Michael have?

Michael has at least 13 years of experience. During this time, Michael has worked in at least 11 different roles and for 11 different companies . The average length of individual experience is 1 year and 1 month . Note that Michael may not have shared all experience and actually has more experience.

Q: What is Michael's latest experience?

Michael's most recent position is Development of an app for displaying sheet music at Freelance Software Developer .

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

In recent years, Michael has worked for Freelance Software Developer , Hundegger , Private project , Open source project , and AP Sensing .

Q: Which industries is Michael most experienced in?

Michael is most experienced in industries like Information Technology , Manufacturing , and Media and Entertainment .

Q: Which business areas is Michael most experienced in?

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

Q: Which industries has Michael worked in recently?

Michael has recently worked in industries like Information Technology , Manufacturing , and Media and Entertainment .

Q: Which business areas has Michael worked in recently?

Michael has recently worked in business areas like Information Technology , Operations , and Product Development .

Recommended expert

Hambrücken, Germany

Check rate

Experience

Apr 2026 - Present

1 month

Development of an app for displaying sheet music

Freelance Software Developer

Industry: Digital music solutions
Technologies used: Flutter, Dart, iOS, Android, GitLab, PlantUML

Jul 2025 - Mar 2026

9 months

Freelance Software Developer

Hundegger

Industry: Mechanical engineering, wood processing industry
Technologies used: .NET, WPF, DevExpress, Clipper, xUnit, Moq, PlantUML, Azure DevOps
Expertise in software architecture, WPF development, and mechanical engineering
Development of geometric algorithms to calculate polygon orientation
Refactoring of an existing software project to improve the architecture
Use of Clipper2Lib to calculate clipping operations
Development of unit and integration tests with xUnit and Moq
Further development of user interfaces with WPF and DevExpress
Creation of documentation in Azure DevOps following arc42
Use of Azure DevOps as a DevOps platform

May 2025 - Present

1 year

Deployment of the Firefly III finance management system

Private project

Technologies used: Kubernetes, Azure, Terraform, Docker, IaC, IaaS, SSL, DNS, Let's Encrypt, Traefik, Linux, Bash, GitHub
Use of Azure as an IaaS platform
Automated creation of the Kubernetes cluster with Terraform
Automated execution of backups with Azure Function Apps

Dec 2024 - Present

1 year 5 months

Event Storming PlantUML library

Open source project

Technologies used: GitHub, Docker, Markdown
PlantUML library for creating Event Storming diagrams
Published on GitHub
Automated build and tests with GitHub Actions

Oct 2024 - May 2025

8 months

Freelance Software Developer

AP Sensing

Industry: Electrical industry
Technologies used: .NET, WPF, PostgreSQL, Dapper, xUnit, Moq, FakeItEasy, Fluent Assertions, PlantUML, GitLab
Further development of a production software based on .NET 8
Persistence and querying of data with a Postgres database using PostgreSQL and Dapper
Development of unit and integration tests with xUnit, Moq, FakeItEasy, and Fluent Assertions
Creation of user interfaces with WPF, MVVM Toolkit, and Extended WPF Toolkit
Creation of mockups with PlantUML
Use of GitLab as a DevOps platform

Feb 2024 - Jul 2024

6 months

Freelance Software Architect

SEW-EURODRIVE

Industry: mechanical engineering
Technologies used: .NET, WPF, NuGet, arc42, Domain-Driven Design, Event Storming, Azure DevOps, Nuke, xUnit, Moq, FakeItEasy, Fluent Assertions, PlantUML
Definition of the future software architecture of the modular system together with agile teams
Documentation of the software architecture in the Azure Wiki according to arc42 with PlantUML
Leading workshops to identify and define software architecture (e.g., Event Storming)
Development of a .NET framework in C# for building modular software systems following Domain-Driven Design principles
Development of unit and integration tests with xUnit
Development of CI pipelines for automated test execution and deployment of NuGet packages with Azure Pipelines and Nuke

Aug 2019 - Jan 2024

4 years 6 months

Software Developer and Architect

SEW-EURODRIVE

Permanent position in the development department in the field of human-machine interfaces
Development of software systems in C# with .NET Framework and .NET Core
Development of user interfaces with WPF
Connecting relational databases with SQL
Analysis, design, and documentation of software system architecture with Enterprise Architect, PlantUML, Mermaid, and arc42
Development of unit and integration tests with MSTest and xUnit
Automation of tests to integrate software into the development process with Azure Pipelines
Scrum Master of an agile development team
Technical support of test rigs for automated integration tests
Operation of internal online services with Docker, Nginx, and Linux
Supervision of students

Jan 2019 - Present

7 years 4 months

Smart Home with Node-RED and Shelly

Personal Project

Technologies used: Docker, MQTT, JavaScript, NoSQL, SSL, DNS, Letsencrypt, Traefik, Nginx, InfluxDB, Linux, Bash, SSH, GitHub
Implementation of a smart home with Shelly devices using Node-RED and MQTT
Creation of automated workflows with Node-RED and JavaScript
Control of Shelly devices via MQTT
Processing power consumption data with InfluxDB (time-series NoSQL database)

Jan 2018 - Jul 2019

1 year 7 months

Software Developer

Weber Ultrasonics

Permanent position in the development department in the field of embedded systems
Development of low-level software libraries in C/C++ and C# .NET
Design of user interfaces and development of human-machine interaction logic with WPF
Design and development of PLC software via a netX fieldbus gateway from Hilscher
Implementation of tests with MSTest to validate the PLC software
Development of software interfaces to integrate fieldbus components into industrial IoT networks like MQTT
Design, development, and maintenance of test software in C# .NET and C++ for automated functional testing of electronic components

Jun 2016 - Dec 2017

1 year 7 months

Working Student in Image Processing

Fraunhofer IOSB Karlsruhe

Wrote the bachelor thesis "Generation and updating of 360° image panoramas using PTZ camera images for visualization in a VR video surveillance application"
Research in camera calibration
Implementation of applications for generating 360° panoramas with C++, OpenCV, and OpenGL
Development of plugins for image processing pipelines with C++ and Qt

Jan 2014 - Present

12 years 4 months

Provisioning a Nextcloud instance

Private Project

Technologies used: Docker, HTML, SSL, DNS, Let's Encrypt, Traefik, Nginx, Linux, Bash, SSH, rdiff-backup, MariaDB, Redis, GitHub
Deployed Nextcloud to secure, manage, and share files, calendars, contacts, etc., using Docker, Nginx, and Traefik
Automated generation of SSL certificates with Let's Encrypt
Automated creation of incremental backups with rdiff-backup

Feb 2011 - Sep 2011

8 months

Mechatronics technician

Schott und Meissner Blaufelden

Permanent position in the assembly department
Electrical and mechanical assembly and commissioning of special machines for thermal bonding
Supervisor during installations in Germany, Italy, France, and Hungary

Industry Experience

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

Experienced in Information Technology and Manufacturing.

Information Technology

Manufacturing

Business Area Experience

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

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

Operations

Information Technology

Product Development

Project Management

Quality Assurance

Research and Development

Summary

Software That Understands - that's my goal. Software should understand what makes your business so special. With deep industry domain knowledge and thoughtful software architecture, I create solutions that deliver real competitive advantages.

I offer you comprehensive experience in the agile development of complex software systems. My technology focus is on .NET. In addition, I bring versatile know-how in software architecture and in applying many other technologies and methodologies.

In my work, it's important to me to create a sustainable, high-quality solution that can be efficiently further developed and maintained beyond my project engagement.

With me, you have found the ideal partner to successfully drive your next project forward!

Skills

Programming Languages: C# .Net - 8 Years, C++ - 2 Years, Typescript, Java, Javascript, Python, Dart - Basic Knowledge
Frontend: Wpf - 8 Years, Flutter - Basic Knowledge
Backend: Wcf, Sql, Postgres, Microsoft Sql Server Compact, Entity Framework, Dapper
Cloud: Kubernetes, Docker, Terraform, Azure, Ssl, Linux, Traefik, Nginx
Software Development: Mstest, Xunit, Git, Test Automation, Azure Devops, Gitlab, Github, Continuous Integration
Software Architecture: Certified Professional For Software Architecture By Isaqb, Uml, Documentation, Requirements Analysis, Design Patterns, Api Design, Domain-driven Design, Arc42
Agile Methods: 6 Years Experience In Agile Scrum Development Teams, Scrum Master - 1 Year
Mechanical Engineering: Training As A Mechatronics Technician, Electrical Specialist, Cad Design, 3d Printing

Languages

German

Native

English

Intermediate

Education

Oct 2012 - Feb 2017

Karlsruhe University of Applied Sciences - Business and Technology Karlsruhe

Bachelor of Science · Computer Science · Karlsruhe, Germany · 1.8

Sep 2007 - Feb 2011

Schott und Meissner

Apprenticeship as a mechatronics technician · Mechatronics · Blaufelden, Germany

Karlsruhe University of Applied Sciences - Business and Technology Karlsruhe

Master, Interactive Systems · Computer Science · Karlsruhe, Germany

Certifications & licenses

Large Language Models - LLMs, Retrieval-Augmented Generation - RAG systems, Generative AI Python, Large Language Models - LLMs

Software architecture for AI lifecycle of AI systems, architectural patterns for AI

iSAQB SWARC4AI

Cloud infrastructure IaaS, IaC, AWS, Docker, Kubernetes, Terraform, Ansible, Cloud Native, Cloud

iSAQB CLOUDINFRA

Soft skills conflict resolution, moderating, leading workshops, reflection, presenting

iSAQB SOFT

iSAQB Foundation Level Software Architecture

Certified Professional For Software Architecture

iSAQB

Statistics

Experience

Total positions 12

Experience in Information Technology 12.5 y

Avg length 2 y 7 m

Longest experience 12 y 3 m

Expertise

Recent roles Development of an app for displaying sheet music, Freelance Software Developer, Deployment of the Firefly III finance management system

Main industries Information Technology, Manufacturing

Main business areas Operations, Information Technology, Product Development

Qualifications

Highest degree Master

Certifications earned 6

Profile

Created

April 2026

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Frequently asked questions

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

Where is Michael based?

Michael is based in Hambrücken, Germany.

What languages does Michael speak?

Michael speaks the following languages: German (Native), English (Intermediate).

How many years of experience does Michael have?

Michael has at least 13 years of experience. During this time, Michael has worked in at least 11 different roles and for 11 different companies. The average length of individual experience is 1 year and 1 month. Note that Michael may not have shared all experience and actually has more experience.

What roles would Michael be best suited for?

Based on recent experience, Michael would be well-suited for roles such as: Development of an app for displaying sheet music, Freelance Software Developer, Deployment of the Firefly III finance management system.

What is Michael's latest experience?

Michael's most recent position is Development of an app for displaying sheet music at Freelance Software Developer.

What companies has Michael worked for in recent years?

In recent years, Michael has worked for Freelance Software Developer, Hundegger, Private project, Open source project, and AP Sensing.

Which industries is Michael most experienced in?

Michael is most experienced in industries like Information Technology, Manufacturing, and Media and Entertainment.

Which business areas is Michael most experienced in?

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

Which industries has Michael worked in recently?

Michael has recently worked in industries like Information Technology, Manufacturing, and Media and Entertainment.

Which business areas has Michael worked in recently?

Michael has recently worked in business areas like Information Technology, Operations, and Product Development.

What is Michael's education?

Michael holds a Master in Computer Science from Karlsruhe University of Applied Sciences - Business and Technology Karlsruhe and a Bachelor in Computer Science from Karlsruhe University of Applied Sciences - Business and Technology Karlsruhe.

Does Michael have any certificates?

Michael has 6 certificates. Among them, these include: Large Language Models - LLMs, Retrieval-Augmented Generation - RAG systems, Generative AI Python, Large Language Models - LLMs, Software architecture for AI lifecycle of AI systems, architectural patterns for AI, Cloud infrastructure IaaS, IaC, AWS, Docker, Kubernetes, Terraform, Ansible, Cloud Native, and Cloud.

What is the availability of Michael?

Michael is immediately available for suitable projects.

What is the rate of Michael?

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