Holger Klink

Data Migration Sage 100 to Odoo

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Merzalben, Germany

Experience

Feb 2025 - Apr 2025
3 months

Data Migration Sage 100 to Odoo

LRT Automotive

  • SQL database development, design, and documentation of procedures, functions, and triggers
  • Migration of data from Sage Line 100 database to Odoo
  • Database design with MS-SQL Server and SQL (T-SQL)
  • Use of Power Query and Excel
Jun 2024 - Feb 2025
9 months

Application and database development

Aktive-Time

  • Implementation of a general web API for various clients (WPF, ASP.Net Core app)
  • Design and documentation of database and application architecture
  • Technologies: C#.Net Core 8.0, SQL, Entity Core 9.0, LINQ, ASP.Net Core Web API (JSON), Docker, Serilog
Aug 2020 - Mar 2024
3 years 8 months
Munich, Germany

ASP.Net application development

IF Blueprint AG

  • ASP.Net application and database development
  • Design and documentation of web APIs
  • Bug fixing in C#, WPF, and unit tests
  • Adjustments at ADO document level and VSTO add-ins
  • Development of Office add-ins for Excel, Word, and SLV
  • Technologies: C#, .Net Framework 4.8, VBA, Python, WPF, VSTO, Windows API, .Net Core, Excel-DNA, SQLite DB, Autofac, ClosedXML, Log4Net, COM interop, ActiveX, custom task pane, WCF, XAML
Jul 2019 - Mar 2020
9 months
Unterschleißheim, Germany

Application development

Alpine

  • Implementation of a 64-bit legacy wrapper
  • Implementation of EF Core (context manager, repository, SQLite DB)
  • Bug fixing with debugging and testing in C#, WPF
  • Implementation of an ASP.Net Core Web API for data exchange
  • Technologies: C#.Net, SQL, Entity Core 2.2/3.1, LINQ, ASP.Net Core Web API (JSON), SQLite
Oct 2018 - Mar 2019
6 months
Stuttgart, Germany

Visual Studio application development

MDC Stuttgart

  • Integration of .Net WinForms and WPF into Sage 100 GUI (MS Access)
  • Project management, design, planning, and development
  • Technologies: C#, Entity Framework, LINQ, Access VBA, WPF, WinForms, SQL
Aug 2018 - May 2019
10 months
Stuttgart, Germany

Application Development

MDC Stuttgart

  • DRACOON cloud integration with Sage Line 100
  • Project management, concept design, planning, and development
  • Technologies: C#.Net, Sage add-in (Access, VBA), SQL, Entity Framework 6.2, LINQ, ADO
Oct 2017 - Feb 2018
5 months
Stuttgart, Germany

Application Development

MDC Stuttgart

  • Revision and further development of the existing Sage Access add-in
  • Project management, concept design, planning, and development
  • Technologies: Access, VBA, ADO, SQL, Word, Outlook
Jun 2017 - Oct 2017
5 months
Stuttgart, Germany

Application Development

MDC Stuttgart

  • Programming of the Sage task center
  • Project management, concept design, planning, and development
  • Technologies: C#, Entity Framework 6.2, LINQ, ADO.Net, SQL
Mar 2017 - Apr 2017
2 months
Stuttgart, Germany

Application Development

MDC Stuttgart

  • Integration of Bonobo Git Server and DRACOON Cloud with JSON REST and version control
  • Use of Thomson Reuters RFA API and OpenDacs
  • Project management, concept design, planning, and development
  • Technologies: IIS, Git
Jan 2017 - Apr 2017
4 months
Stuttgart, Germany

Application Development

MDC Stuttgart

  • Creation of reports in SSMS (Reporting Services) and Excel
  • Project management, concept design, planning, and development
  • Technologies: VBA, SQL, ADO
Oct 2016 - Feb 2019
2 years 5 months
Schwaig, Germany

Application development

1stVision

  • Retrieval of currency, foreign exchange and precious metal rates via Reuters RFA API
  • Development of Windows services for scheduled processing of export and import interfaces
  • Technologies: C#.Net, SQL, XML
Sep 2016 - Jan 2017
5 months
Stuttgart, Germany

Application development

MDC Stuttgart

  • Revision of auditor assignment and server certificate management in a Windows domain (AC)
  • Creating new Word documents and coding text blocks
  • Project management, concept, planning and development
  • Technologies: MS-SQL Server, Sage Add-In (VBA), SQL
Sep 2016 - Oct 2016
2 months

Application development

O & S EDV Weingarten

  • Updating legacy systems
  • Project management, concept, planning and development
  • Technologies: VB.Net, Sage Add-In (VBA), SQL
Sep 2016 - Sep 2016
1 month
Stuttgart, Germany

Application development

MDC Stuttgart

  • Development of an interface for data transfer to DADIS
  • Project management, concept, planning and development
  • Technologies: Core FTP, Sage Add-In (VBA), SQL
Jul 2016 - Aug 2016
2 months

Application development

O & S EDV Weingarten

  • Development of an interface from Sage Line (ERP, PPS) to Calitime (employee time tracking)
  • Project management, concept, planning and development
  • Technologies: VB.Net, Sage Add-In (VBA), SQL
Apr 2016 - Jun 2016
3 months

Application development

O & S EDV Weingarten

  • Customizations and updates of legacy systems
  • Project management, concept, planning and development
  • Technologies: VB.Net, Sage Add-In (VBA), SQL
Apr 2016 - Apr 2016
1 month

Application development

O & S EDV Weingarten

  • Updates of legacy systems
  • Project management, concept, planning and development
  • Technologies: VB.Net, Sage Add-In (VBA), SQL
Mar 2016 - Apr 2016
2 months

Application development

O & S EDV Weingarten

  • Development of SQL database triggers for table synchronization of different Sage databases
  • Project management, concept, planning and development
  • Technologies: SQL
Jan 2015 - Sep 2015
9 months
Munich, Germany

Application development

Smeg Hausgeräte GmbH

  • Development of a logistics interface between Sage OfficeLine and Rhenus
  • Setup of a transfer database and a Windows service
  • Implementation of an SFTP interface and MS SQL report server
  • Technologies: VB.Net, Sage Add-In (VBA), SQL
Jul 2014 - Jul 2015
1 year 1 month
Dahn, Germany

Application development

SLS Kunststoffverarbeitungs GmbH & Co. KG

  • Preliminary costing with quote creation for AktiveTime manufacturing
  • Development of quantity-dependent quote creation based on a resource list
  • Technologies: PowerBuilder application, VBA
Jun 2013 - Aug 2013
3 months
Munich, Germany

Application Development

Smeg Hausgeräte GmbH

  • Development of a purchase disposition in Excel with document workflow
  • Project management, design, planning and development
  • Technologies: VBA, SQL
Oct 2012 - Nov 2012
2 months
Munich, Germany

Application Development

Smeg Hausgeräte GmbH

  • Extension of the ServiceTool software to include a reminder system for technicians
  • Project management, design, planning and development
  • Technologies: Powerbuilder .Net Win Form Application
May 2012 - Jul 2016
4 years 3 months
Dahn, Germany

Database Development

SLS Kunststoffverarbeitungs GmbH & Co. KG

  • Development and delivery of reports with MS-SQL Reporting Services
  • Project management, design, planning and development
  • Technologies: SQL (T-SQL), stored procedures and functions
Mar 2012 - Dec 2012
10 months
Munich, Germany

Application Development

Smeg Hausgeräte GmbH

  • Development of a logistics interface from Sage OfficeLine to COGLAS GmbH Logistic Solutions
  • Project management, design, planning and development
  • Technologies: Sage Add-In (VBA Access), SQL
Jan 2012 - May 2012
5 months
Munich, Germany

Application Development

Smeg Hausgeräte GmbH

  • Development of a .Net WCF service to connect the service software and web client
  • Project management, design, planning and development
  • Technologies: Powerbuilder .Net Winform Application, VB.Net WCF service, TAPI interface
Jan 2010 - Jul 2010
7 months
Munich, Germany

Application Development

Smeg Hausgeräte GmbH

  • Development of a service center web client for field staff
  • Features for reports, customer lists, online orders and bonus calculation
  • Technologies: Powerbuilder .Net Web Form Application
Mar 2009 - Mar 2016
7 years 1 month
Munich, Germany

System Administrator

Smeg Hausgeräte GmbH

  • Administration of servers, networks, devices and software
  • Support of Windows Server domains (DNS, DHCP, AD), SQL Server, Exchange Server, ESXi Server
  • Use of Symantec Backup Exec, time tracking systems and telephone systems
Sep 2004 - Oct 2005
1 year 2 months
Dortmund, Germany

Application Development

Hadley Profiltechnik GmbH

  • Customization of the AktiveTime manufacturing for coils in roll production
  • Project management, concept, planning and development
  • Technologies: Powerbuilder Application, Sage Add-In (VBA), VBA
Mar 2003 - May 2006
3 years 3 months

Application Development

Aktive-Time Software

  • Development of a PPS production management system as an add-in for Sage OfficeLine
  • Project management, concept, planning and development
  • Technologies: Powerbuilder Application, Sage Add-In (VBA), VBA

Summary

Creative professional with extensive project experience. My strengths include analytical thinking, creativity, perfectionism, passion, patience, and teamwork.

As a self-employed database and software developer, I have spent the last years designing and developing projects for mid-sized industrial companies, banks, government agencies, and automotive suppliers. My main areas include ERP systems (Sage 100), production planning (PPS), PowerBuilder applications, interfaces, as well as standalone solutions for government agencies.

Besides project work, I'm open to new challenges and can well imagine bringing my experience in a temporary assignment (ANÜ) or in a permanent position.

Skills

  • Project Management And Consulting
  • Legacy System Migration
  • Digitization Of Government Authorities And Offices
  • Analysis, Planning, Programming, Implementation, Documentation, And Training

Programming And Development

  • Backend And Frontend Programming In C#/vb.net (Framework, Core), Vba (Winforms, Wpf, Wcf, Soap, Json/rest, Asp.net Web Service, Services, Interfaces)
  • Database Programming (Ms-sql Server, Sqlite, Transact-sql)
  • Erp Application Development, Especially Sage Line 100 (Officeline), In C#, Powerbuilder, Vb.net, And Access (Vba)
  • Customizations In Sage Line 100 (Documents, Dcm, Add-in, App Designer, Task Center)
  • Interface Programming For Logistics, Pps, Shop Floor Data Acquisition (Bde), Time Tracking, Cloud Integration
  • Ms Office Programming (Vba, Vsto, Com Interop)

Programming Focus Areas

  • C#
  • Vb.net
  • Vba
  • Sql
  • Ms Office
  • Powerbuilder

Databases

  • Ms-sql Server (Ssms, T-sql, Procedures, Functions, Triggers, Db Design, Reporting Services)
  • Sqlite
  • Sybase Ase

Frameworks And Technologies

  • Entity Framework / Core
  • Asp.net Web Api
  • Linq
  • Ado / Ado.net
  • Winforms
  • Wpf
  • Wcf

Data Formats

  • Xml
  • Json
  • Xaml

Tools

  • Visual Studio
  • Git
  • Docker
  • Jira
  • Vs Code

Special Skills

  • Thomson Reuters Api Rfa (Robust Foundation Api), Opendacs
  • Dracoon Cloud (Json Rest, Swagger-codegen)
  • Sage Task Center (Logisoft)

Administration

  • Exchange
  • Windows Domain (Ac), Networks
  • Windows Server
  • Ms-sql Server
  • Vmware Esxi
  • Hyper-v
  • Linux Server
  • Iis
  • Core Ftp

Ms Office

  • Word
  • Excel
  • Access
  • Powerpoint

Languages

German
Native
English
Intermediate

Education

Sep 2000 - Jul 2002

Commercial School Donaueschingen

Secondary school leaving certificate · Secondary school leaving certificate · Donaueschingen, Germany

Sep 2000 - Jul 2002

IT Consulting Weiss Schiltach

IT Specialist for Application Development · IT Specialist for Application Development · Schiltach, Germany

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