Markus Demmler - Senior Developer, Coach

Augsburg, Germany

Experience

Sep 2022 - Present

2 years 11 months

Augsburg, Germany

Senior Developer, Coach

Retail

Developed an app for branch management
C#/XAML, Xamarin.Forms, MvvmCross, NUnit, Xamarin.UITest, Entity Framework Core, ASP.NET Core Web API, Azure DevOps, Visual Studio App Center

May 2022 - Aug 2022

4 months

Augsburg, Germany

Senior Developer, Coach

Logistics

Rebuilt an app framework for unified app development in the logistics sector
C#, .NET MAUI, Reactive, SkiaSharp, moq, XUnit, Xamarin UI Test, Confluence, Jira, Bitbucket, Jenkins

Jan 2021 - Apr 2022

4 months

Augsburg, Germany

Senior Developer, Coach

Logistics

Developed a web application for log file analysis and data replay
C#, Blazor, MudBlazor, Reactive, ASP.NET Web API, moq, XUnit, Confluence, Jira, Bitbucket, Jenkins

Feb 2020 - Dec 2021

1 year 11 months

Augsburg, Germany

Senior Developer, Coach

Logistics

Modernized the driver workstation of a logistics market leader by redeveloping a modern Android app and integrating it into existing business processes using web services
C#/XAML, Xamarin.Forms, Xamarin.Android, Xamarin.Forms-Shell, Jenkins, Jira, Bitbucket, Swagger, Scrum

Sep 2019 - Jan 2020

5 months

Augsburg, Germany

Lead Developer

Public Transport

Developed a ticketing app for Android and iOS
C#, Xamarin.iOS, Xamarin.Android, SVN, Jira, Location Services, Activity Recognition, Background Services

Nov 2018 - Jul 2019

9 months

Augsburg, Germany

Senior Developer, Coach

Logistics

Modernized the driver workstation of a logistics market leader by redeveloping a modern Android app and integrating it into existing business processes using web services
C#/XAML, Xamarin.Forms, Xamarin.Android, MvvmCross, Jenkins, Jira, Bitbucket, Swagger, Scrum

Jul 2018 - Oct 2018

4 months

Augsburg, Germany

Senior Developer, Coach

IT Document Management

Redeveloped a WPF app and corresponding Office add-ins for secure management, editing, and sharing of documents
C#/XAML, WPF, MVVM, MahApps.Metro, Zeplin, moq, Visual Studio 2017, Team Foundation Server 2017, Scrum

Apr 2017 - Jun 2017

3 months

Augsburg, Germany

Lead Developer

Industry

Developed an app for service technicians to manage all production-relevant resources and perform maintenance tasks
C#/XAML, Xamarin.Forms, MvvmCross, Visual Studio 2017, TFS 2017, Scrum, App Center

Jan 2016 - Dec 2019

2 years

Augsburg, Germany

Consultant

Microsoft

Supported Microsoft in technical presales as P-TSP (Partner Technology Solution Professional) with a focus on Xamarin, mobile development, and Mobile DevOps tools (Visual Studio App Center)

Jul 2015 - Jul 2017

2 years 1 month

Augsburg, Germany

Lead Developer

Banknote Processing

Developed a cross-platform framework (Windows (UWP + WPF), iOS, Android) for applications in banknote processing
C#/XAML, WPF, Xamarin.Forms, MvvmCross, Universal Windows Platform (UWP) apps, Visual Studio 2017, Team Foundation Server 2015, Scrum

Mar 2015 - May 2015

3 months

Augsburg, Germany

Lead Developer

IT Consulting

Requirements analysis, design, and implementation of a mobile application for consolidated access to processing tasks
C#, HTML5, CSS3, JavaScript, AngularJS, Apache Cordova, Ionic, Bootstrap, ASP.NET Web API, Visual Studio 2015, Azure Mobile Apps, TFS 2013, iOS, Android, Balsamiq Mockups

Jan 2015 - Mar 2015

3 months

Augsburg, Germany

Lead Developer

Healthcare

Developed a mobile application for iPad and Android tablets to provide secure access to key performance indicators (KPIs), including financial and personnel data for management and controlling
C#/XAML, Xamarin.Forms, MVVM, Syncfusion Essential Studio for Xamarin, ASP.NET Web API, Visual Studio 2013, Team Foundation Server 2012, iOS, Android

Dec 2013 - Nov 2014

1 year

Augsburg, Germany

Senior Developer

IT Document Management

Developed a responsive web application for secure management, editing, and sharing of documents
Single Page Application (SPA), ASP.NET MVC 5, ASP.NET Web API 2, JavaScript, HTML5, CSS3, Knockout.js, Bootstrap, QUnit, Visual Studio 2013, Team Foundation Server 2013, Git, Scrum

Jan 2013 - Aug 2013

8 months

Augsburg, Germany

Lead Developer

IT Consulting

Developed a Windows 8 line-of-business app for recording work and performance times and assigning them to projects/orders using Microsoft Dynamics CRM as the backend system
C#/XAML, Windows 8/WinRT, MVVM, .NET 4.5, layered architecture, caching, user experience, Visual Studio 2012, Team Foundation Server 2012, Microsoft Dynamics CRM 2011, OData, LINQ, SQLite, Scrum

Jan 2010 - Sep 2012

1 year 9 months

Augsburg, Germany

Senior Developer

Smart Card & Security Applications

Developed a one-time-password application
C#, .NET 4.0, Enterprise Library, moq, Coded UI Tests, Visual Studio 2010, Scrum

Jan 2009 - Jun 2010

6 months

Augsburg, Germany

Lead Developer

Healthcare

Developed a distributed practice application for a therapy center
C#, .NET 4.0, WPF, WCF, Entity Framework, Enterprise Library, DevComponents UI Controls, SQL Server 2008, Visual Studio 2010, Team Foundation Server 2010, LINQ

Oct 2009 - Dec 2010

1 year 3 months

Augsburg, Germany

Senior Developer

Smart Card & Security Applications

Enhanced a TPM application with an associated management server
C#, ASP.NET 3.5 Web Forms, Coded UI Tests, Visual Studio 2008/2010, Scrum

Aug 2005 - Aug 2008

3 years 1 month

Augsburg, Germany

Enterprise Developer

Surveying

Developed a distributed product framework for GPS surveying applications to process real-time data
C#, .NET 2.0/3.5 Windows Forms, .NET Remoting, Windows Services, SQL Server 2005, XML, Enterprise Library, VS 2005 Team System, MSTest

Summary

As a freelance .NET Senior Software Developer/Architect, I support my clients in the development process, architecture design, coaching measures, and technical project management. Technologically, I master the entire .NET development environment. My core competency lies in developing mobile business apps with Xamarin.Forms/.NET MAUI and .NET web development with Blazor.