Erhan Yigit
Systems Management Consultant
Experience
Commerzbank
- New development of an ASP.NET web application for mortgage financing
- Maintenance as well as functional and technical enhancements (expanding to other loan types, connecting to various services, developing custom web services)
- Analysis of business requirements in close collaboration with business units
- Creation of IT concepts and technical documentation
- Development in both back and front end
- Design and implementation of automated build, deployment and test processes
- Creating scripts for automated generation of data access layers (C# classes and SQL scripts) and integrating them into build and deployment processes
- Languages: C#, PowerShell, JavaScript
- Technologies: ASP.NET, Windows Forms, XML Web Services, Windows Services, MS SQL Server, Entity Framework, unit testing, automated build, deployment and test processes
- Tools: Visual Studio 2005-2015, Team Foundation Server, DevExpress, Rational ClearCase, Rational ClearQuest, CruiseControl.net
Software development company for Pfizer
- Development of two ASP.NET applications for modeling internal company processes
- Languages: C#
- Technologies: ASP.NET, Plumtree Portal Server, MS SQL Server
- Tools: Visual Studio .NET 2003, Visual SourceSafe
Software development company for Pfizer
- Migration of ASP applications to ASP.NET as part of a portal migration
- Creation of target and realization concepts, implementation and testing
- Languages: C#
- Technologies: ASP.NET, Plumtree Portal Server, MS SQL Server
- Tools: Visual Studio .NET 2003, Visual SourceSafe
Sinius GmbH
Rollout Management Software (05/2005 – 12/2005): Design and development of a web-based rollout management software based on ASP.NET with Oracle integration. Languages: C#, PL/SQL. Technologies: ASP.NET, Windows Forms, ODP.NET, Application Blocks. Tools: Visual Studio .NET 2003, Crystal Reports (VS.NET Edition), Visual SourceSafe, Infragistics NetAdvantage, PL/SQL Developer.
On-site Inspection Software (03/2005 – 12/2005): Development of a web-based on-site inspection software using ASP.NET, XML Web Services and smart clients with Oracle integration. Languages: C#. Technologies: ASP.NET, XML Web Services, Windows Forms (smart client), WSE, ODP.NET, Application Blocks. Tools: Visual Studio .NET 2003, Crystal Reports (VS.NET Edition), Visual SourceSafe, Infragistics NetAdvantage, NUnit.
Patch and Build Management Software (01/2005 – 04/2005): Design and development of a system to manage build and patch information. Languages: C#. Technologies: XML Web Services, Windows Forms, WSE, Application Blocks, MS SQL Server. Tools: Visual Studio .NET 2003, Visual SourceSafe.
System Configuration and Management System (01/2003 – 06/2005): Development of a system for installation, configuration, software distribution, Citrix farm configuration, hardware, software and user inventory with reporting capabilities on Windows systems. Languages: C#, C++, WSH (JScript, VBScript). Technologies: ASP.NET, XML Web Services, Windows Services (both .NET and classic), COM server (ATL), WSE, ADSI, WMI, MFCOM, Application Blocks, O/R Mapping, MS SQL Server. Tools: Visual Studio .NET 2003, Visual SourceSafe, NUnit.
Freelance Software Developer
Trainings – mainly in Microsoft technologies:
Azure
New .NET technologies (up to .NET 9, C# 13)
…
Various personal projects for private use or practice, for example:
Small applications against various APIs (e.g. from bitcoin.de, IG, Todoist)
Extracting and displaying information from iPhone backups and third-party apps
…
Languages: C#, PowerShell, Python
Technologies: Azure, .NET Core, .NET 6-9, WPF, MVVM, Blazor, Git, Docker, WSL, Web API, Entity Framework, SQLite, MS SQL Server, …
Tools: Visual Studio 2019-2022, Visual Studio Code, Postman, GitHub, …
Sinius GmbH/Deutsche Bank AG
- Participated in various projects in development, automation, and systems management
Systems Management Consultant
SerCon GmbH
System Developer
SRZ Rheinland GmbH
Industries Experience
See where this freelancer has spent most of their professional time. Longer bars indicate deeper hands-on experience, while shorter ones reflect targeted or project-based work.
Experienced in Information Technology (31 years), Banking and Finance (16 years), and Pharmaceutical (0.5 years).
Business Areas Experience
The graph below provides a cumulative view of the freelancer's experience across multiple business areas, calculated from completed and active engagements. It highlights the areas where the freelancer has most frequently contributed to planning, execution, and delivery of business outcomes.
Experienced in Information Technology (31 years) and Product Development (29.5 years).
Summary
- Professional experience since 1995. Initially as a developer at Sparkassen Rechenzentrum Rheinland GmbH, later as a consultant at SerCon GmbH
- Freelance software developer since 1999. Main assignments were: Commerzbank for 12 years, Deutsche Bank for 7 years
- Specialization in Microsoft technologies since 2003
- Fullstack developer focused on Microsoft technologies (C#, .NET Framework up to .NET 9, SQL Server)
- Always up to date through training and personal projects.
Skills
Programming And Scripting Languages
- C# +++
- Powershell, Html, Css, Javascript, Typescript ++
- Python +
Frameworks
- .Net Framework, .Net Core, Asp.net, Entity Framework +++
Application Types
- Asp.net Mvc, Asp.net Core Mvc, Asp.net Core Web Api, Winforms, Wpf, Xunit +++
- Blazor Server ++
Development Tools
- Microsoft Visual Studio, Visual Studio Code, Sql Server Management Studio, Postman +++
Source Control And Ci/cd
- Microsoft Team Foundation Server, Git +++
- Azure Devops +
Methodologies
- Incremental Development, Agile Development (Scrum, Kanban), Oop +++
Patterns And Practices
- Solid, Mvvm, Dependency Injection +++
Databases
- Microsoft Sql Server, Sqlite ++
Others
- Azure, Docker, Wsl ++
Languages
Education
Training as Mathematical-Technical Assistant · Mathematical-Technical Assistant · Germany
Certifications & licenses
AZ-900: Microsoft Azure Fundamentals
Microsoft Certified Solution Developer (MCSD) For Microsoft .NET
Microsoft Certified Application Developer (MCAD) For Microsoft .NET
Microsoft Certified Professional
Profile
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