Karl Steinzer
Verified Expert in Engineering
Windows Communication Foundation (WCF) Developer
Horitschon, Austria
Toptal member since February 22, 2021
With a BS in software development and 15 years of experience in complex software projects ranging from small startups to international companies, Karl is able to quickly contribute to development teams. He enjoys working in multi-cultural and distributed teams and is eager to improve his technical skills. Because of his passion for software development, he strives to deliver high-quality work and to exceed the expectations of customers and users.
Portfolio
Experience
Availability
Preferred Environment
Visual Studio .NET, Git, Microsoft Team Foundation Server, .NET Core, C#.NET
The most amazing...
...project i've worked on was an object annotation app for a German automotive company with people from multiple countries pushing autonomous driving forward.
Work Experience
Senior Full-stack Developer
Freelance
- Developed a WPF application for object annotation with 12 parallel views of 2D camera images and 3D point clouds.
- Optimized code to handle a huge amount of data with HDF as a data source and SQLite as a local client database.
- Acted as the lead developer in an international team with up to 15 members distributed in Germany, Austria, India, and Russia.
- Created an implementation in .NET Core to connect RFID readers and payment terminals to a custom vending platform.
Senior Full-stack Developer
JetTicket Software GmbH
- Developed and refactored a custom template based webshop including migration from older versions.
- Created an update tool to improve the webshop update process in terms of required time and error prevention.
- Created the prototype of a WCF service to act as a middleware to a legacy system.
Senior Full-stack Developer
Freelance
- Developed a CMS using MS Silverlight and front ends including social media integration (Facebook, Twitter, and Google+).
- Implemented unit tests and automated web tests using the Telerik framework.
- Created the concept for an eNegotation platform and served as the team lead of an Egyptian development team.
Full-stack Developer
negPoint
- Created an eSourcing solution for auctions and tenders hosted on Microsoft IIS and SQL Server.
- Integrated Excel for online and offline editing and calculation.
- Implemented, tested, and deployed the solution including monitoring and support.
Experience
C.Label
eSource
An Excel template engine was implemented to allow online and offline spreadsheet calculation and editing as well as import/export.
As a reporting framework, Telerik was used and export to PDF of online data was provided.
Education
Bachelor's Degree in Software and Information Engineering
Technical University of Vienna - Vienna, Austria
Skills
Libraries/APIs
REST API, HDF5, Entity Framework
Tools
Visual Studio .NET, Microsoft Development, Git, Microsoft Silverlight, Telerik Reports
Languages
.NET, SQL, JavaScript, VB.NET, XAML, HTML, C++
Frameworks
.NET Core, ASP.NET, Windows Presentation Foundation (WPF)
Paradigms
Dependency Injection, Inversion of Control
Storage
SQLite, JSON, SQL Server 2010, SQL Server
Platforms
Windows Development, Azure, Telerik
Other
Windows Communication Foundation (WCF), Ajax, IIS 7, Social Media Integration, Payment APIs, IIS
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