Markus Demmler

Senior Developer, Coach: Retail

Markus Demmler
Augsburg, Germany

Experience

Sep 2022 - Present
3 years 5 months

Senior Developer, Coach: Retail

  • Developed a store management app
  • Technologies: 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

Senior Developer, Coach: Logistics

  • Developed a new app framework for unified app development in logistics
  • Technologies: C#, .NET MAUI, Reactive, SkiaSharp, Moq, xUnit, Xamarin UI Test, Confluence, Jira, Bitbucket, Jenkins
Jan 2022 - Apr 2022
4 months

Senior Developer, Coach: Logistics

  • Developed a web application for log file analysis and data replay
  • Technologies: C#, Blazor, MudBlazor, Reactive, ASP.NET Web API, Moq, xUnit, Confluence, Jira, Bitbucket, Jenkins
Feb 2020 - Dec 2021
1 year 11 months

Senior Developer, Coach: Logistics

  • Modernized the driver workstation for a leading logistics company by developing a modern Android app and integrating it into existing business processes using web services
  • Technologies: C#/XAML, Xamarin.Forms, Xamarin.Android, Xamarin.Forms Shell, Jenkins, Jira, Bitbucket, Swagger, Scrum
Sep 2019 - Jan 2020
5 months

Lead Developer: Public Transport

  • Developed a new ticketing app for Android and iOS
  • Technologies: C#, Xamarin.iOS, Xamarin.Android, SVN, Jira, location services, activity recognition, background services
Nov 2018 - Jul 2019
9 months

Senior Developer, Coach: Logistics

  • Modernization of the driver's workstation for a leading logistics provider by redeveloping a modern Android app and integrating it into existing business processes using web services
  • Technologies: C#/XAML, Xamarin.Forms, Xamarin.Android, MvvmCross, Jenkins, Jira, Bitbucket, Swagger, Scrum
Jul 2018 - Oct 2018
4 months

Senior Developer, Coach: IT Document Management

  • Redevelopment of a WPF app and related Office add-ins for the secure management, editing, and sharing of documents
  • Technologies: C#/XAML, WPF, MVVM, MahApps.Metro, Zeplin, moq, Visual Studio 2017, Team Foundation Server 2017, Scrum
Apr 2017 - Jun 2017
3 months

Lead Developer: Industry

  • Development of an app for service technicians to manage all production-related resources and perform maintenance tasks
  • Technologies: C#/XAML, Xamarin.Forms, MvvmCross, Visual Studio 2017, Team Foundation Server 2017, Scrum, App Center
Jan 2017 - Dec 2018
2 years

Consultant: Microsoft

  • Support for Microsoft in technical presales as a 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

Lead Developer: Banknote Processing

  • Development of a cross-platform framework (Windows UWP+WPF, iOS, Android) for applications in banknote processing
  • Technologies: C#/XAML, WPF, Xamarin.Forms, MvvmCross, Universal Windows Platform, Visual Studio 2017, Team Foundation Server 2015, Scrum
Mar 2015 - May 2015
3 months

Lead Developer: IT Consulting

  • Requirements analysis, design, and implementation of a mobile application for consolidated access to processing tasks
  • Technologies: C#, HTML5, CSS3, JavaScript, AngularJS, Apache Cordova, Ionic, Bootstrap, ASP.NET Web API, Visual Studio 2015, Azure Mobile Apps, Team Foundation Server 2013, iOS, Android, Balsamiq Mockups
Jan 2015 - Mar 2015
3 months

Lead Developer: Healthcare

  • Developed a mobile application for iPad and Android tablets to provide secure access to key performance indicators (KPIs), including financial and HR data for management and controlling
  • Technologies: 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 - Dec 2016
3 years 1 month

Senior Developer: IT Document Management

  • Developed a responsive web application for secure management, editing, and exchange of documents
  • Technologies: 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 - Jun 2015
2 years 6 months

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
  • Technologies: 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 2011 - Sep 2012
1 year 9 months

Senior Developer: Smart Card and Security Applications

  • Developed a new one-time password application
  • Technologies: C#, .NET 4.0, Enterprise Library, Moq, Coded UI Tests, Visual Studio 2010, Scrum
Jan 2010 - Sep 2013
3 years 9 months

Lead Developer: Healthcare

  • Developed a distributed practice application for a therapy center
  • Technologies: 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

Senior Developer: Smart Card and Security Applications

  • Enhanced a TPM application with its management server
  • Technologies: C#, ASP.NET 3.5 Web Forms, Coded UI Tests, Visual Studio 2008/2010, Scrum
Aug 2005 - Aug 2008
3 years 1 month

Enterprise Developer: Surveying

  • Built a new distributed product framework for GPS surveying applications to process real-time data
  • Technologies: C#, .NET 2.0/3.5, Windows Forms, .NET Remoting, Windows Services, SQL Server 2005, XML, Enterprise Library, Visual Studio 2005 Team System, MSTest

Summary

As a freelance .NET senior software developer/architect, I help my clients with the development process, architecture design, coaching, and technical project management.

I am skilled in the full .NET development environment.

My main expertise is in building mobile business apps with Xamarin.Forms and .NET MAUI, as well as .NET web development with Blazor.

Skills

  • Mobile – .Net Maui, Xamarin.forms, Xamarin.ios, Xamarin.android, Uwp, Azure Mobile Apps, Mvvmcross, Sqlite, Visual Studio App Center, Skiasharp, Reactive

  • Windows – C# / .Net, Xaml, Wpf, Uwp, Winui, Mahapps.metro

  • Backend – Asp.net Core Web Api, Rest, Odata, Wcf, Web Services, Entity Framework, Linq, Windows Services

  • Web – Blazor, Mudblazor, Javascript, Html5, Css3, Bootstrap, Single-page Applications

  • Testing – Xunit, Moq, Xamarin Ui Test

  • Engineering / Responsibilities – Clean Code, Software Quality, Software Design, Design Patterns, Architecture: Layers, Mvc, Mvvm, Client/server, Unit Testing, Tdd, Code Reviews, Pair Programming, Coding Guidelines, Scrum/agile, Process Models, Tfs, Git, Visual Studio, Resharper, Visual Studio For Mac, Ui Design, Usability, User Experience, Analysis: Business, Technical, Conceptual, Ooa/ood, Uml, Lead Developer, Consultant, Coach

Languages

German
Advanced
English
Advanced

Education

Lorem ipsum dolor sit amet

University Diploma in Computer Science · Computer Science

Certifications & licenses

Xamarin Certified Mobile Mobile Developer

Xamarin.iOS

Xamarin Certified Mobile Developer

SQLite

Visual Studio App Center

Microsoft Technical Summit

Reactive Azure Solutions Certification

Microsoft 70-532 Developing Microsoft

SkiaSharp

SCRUM Master Training + Certification

Management 3.0 Training

MahAps.Metro

Lead Developer: Tasks and Workshop

ASP.NET Core Web API

Entity Framework, LINQ

iSAQB Architecture Days

OData

Visual Studio ALM Days 2012

Xamarin.Android

DWX Developer Week

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