Ernst Höfler - Support/Development/Consulting – Process Development, E-Invoicing, XRechnung, ZUGFeRD

Q: Where is Ernst based?

Ernst is based in Munich, Germany .

Q: What languages does Ernst speak?

Ernst speaks the following languages: German (Native), English (Advanced) .

Q: How many years of experience does Ernst have?

Ernst has at least 21 years of experience. During this time, Ernst has worked in at least 16 different roles . The average length of individual experience is 1 year and 1 month . Note that Ernst may not have shared all experience and actually has more experience.

Q: What is Ernst's latest experience?

Ernst's most recent position is Support/Development/Consulting – Process Development, E-Invoicing, XRechnung, ZUGFeRD .

Q: Which industries is Ernst most experienced in?

Ernst is most experienced in industries like Information Technology , Construction , and Professional Services . Ernst also has some experience in Retail , Food and Beverage , and Manufacturing .

Q: Which business areas is Ernst most experienced in?

Ernst is most experienced in business areas like Information Technology , Operations , and Project Management . Ernst also has some experience in Finance , Accounting , and Quality Assurance .

Q: Which industries has Ernst worked in recently?

Ernst has recently worked in industries like Information Technology , Professional Services , and Manufacturing .

Q: Which business areas has Ernst worked in recently?

Ernst has recently worked in business areas like Information Technology , Operations , and Project Management .

Q: What is Ernst's education?

Ernst attended Munich University of Applied Sciences for Business Informatics .

Recommended expert

Munich, Germany

Experience

Jan 2025 - Present

1 year 3 months

Germany

Support/Development/Consulting – Process Development, E-Invoicing, XRechnung, ZUGFeRD

Support and further development of a complex process for creating XML documents for electronic invoices / E-Invoicing (XRechnung, ZUGFeRD)
Automation of operational processes, process development, and optimization
Development of frontend applications with MS Power Apps
Porting SQL Server 2016 to SQL Server 2022
SQL Server database administration

Mar 2024 - Jul 2024

5 months

Design/Development/Consulting – Digital Print Products, Configuration and Pricing

Design, development, and further development of custom software (backend) for an online portal to configure and calculate digital print products
Review and extension of the database structure
Implementation of a new configuration and calculation process
Optimization/automation of process flows
Performance analysis and database tuning
Design and development of an admin client (MS Access) for maintenance and management of master data
Data provisioning for the web frontend
Project management with Taiga

Nov 2023 - Mar 2024

5 months

Design/Development/Consulting – Sales Price Calculation

Further development of an application to calculate sales prices for any items
Integration with an existing inventory data system (MS SQL Server)

Sep 2023 - Dec 2024

1 year 4 months

Design/Development/Consulting – Process Development, E-Invoicing, XRechnung, ZUGFeRD

Design, development, and further development of various routines for handling business processes with SQL Server, MS Access, and MS Outlook
Automation of operational processes (office automation, electronic invoices / E-Invoicing, XRechnung, ZUGFeRD)

Feb 2022 - Jul 2023

1 year 6 months

Design/Development/Consulting – Process Development, E-Invoicing, XRechnung, ZUGFeRD

Design, development, and further development of custom software for processing and optimizing business processes with SQL Server, MS Access, and MS Outlook
Design and further development of a process for generating XML documents for electronic invoices (XRechnung, ZUGFeRD)
SQL Server database administration
Support and further development of a data warehouse
Automation of operational processes, process development, and optimization
Configuration of web applications
Administration and monitoring of a CRM application
Performance analysis and database tuning
Porting SQL Server 2014 to SQL Server 2019

Mar 2021 - Jun 2021

4 months

Design/Development/Consulting – Management of Sales Commissions

Design, development, and enhancement of an application for capturing, maintaining, and evaluating commission data for sales representatives
Integration of an existing warehouse data system via ODBC

Oct 2019 - Dec 2020

1 year 3 months

Design/Development/Consulting – E-Commerce, Big Data

Application development for a complex e-commerce system (couponing system, online shops, campaign automation) to comply with GDPR requirements
Implementation of a complex concept for deleting personal data in a big data environment
Creation of tools for process optimization and automation (Unix, Oracle)
Development of interfaces for monitoring tools and processes

Apr 2018 - Feb 2023

4 years 11 months

Design/Development/Consulting – Process Development and Optimization, DB Management

Design, development, and enhancement of custom software for managing and maintaining databases with SQL Server, MySQL, MS Access, and MS Outlook
Design and enhancement of an existing Access application (client-server) for capturing, maintaining, and evaluating database management data
Optimization of database operations (Oracle, MS SQL Server, MySQL, PostgreSQL)
SharePoint integration to provide database management data
Automation of operational processes, process development, and optimization
Planning and implementation of a patch strategy
Extension of database monitoring with SCOM and OEM
Design and setup of a monitoring solution for MySQL databases
Performance analysis and database tuning
Design and redevelopment of an Access application (client-server) for capturing, maintaining, and evaluating asset information for MySQL databases

Apr 2018 - Nov 2021

3 years 8 months

Design/Development/Consulting – Kopano Mail Server

Designing, installing, and configuring a Kopano mail server (with Postfix and Fetchmail), including the WebApp
Operation and support

Mar 2018 - Feb 2023

5 years

Design/Development/Consulting – Event Management

Design, development, and enhancement of an existing application for capturing, maintaining, and evaluating event management data
Installation and configuration of SQL Server 2017
Porting the database and backend application from SQL Server 2008 to SQL Server 2017
Performance tuning
Porting the frontend application from Windows 7/MS Office 2010 to Windows 10/MS Office 2016
Integration of new functionalities
Connecting to a media database
Incident and CR management with SharePoint
Project management

Apr 2016 - Jun 2016

3 months

Design/Development/Consulting – Sales Price Calculation

Further development of an application for calculating sales prices for various items
Integration of an existing warehouse data system via ODBC

Feb 2015 - Nov 2015

10 months

Design/Development/Consulting – Hospitality, Fully Automated Cocktail Machine

Further development of an existing application to control a fully automated cocktail machine and to collect, manage, and analyze master and transaction data
General overhaul of the application
Performance tuning
Internationalization
Integration of new features
Project management

Jul 2014 - Feb 2018

3 years 8 months

Design/Development/Consulting – E-Commerce, Business Process Management

Partner and application support for a complex e-commerce system (couponing system, online shops)
Online quality management and business process management
Process support and optimization for promotion and coupon processing
Development of tools for process automation (Unix, Oracle)
Implementation of various modules and reports for data analysis and evaluation (Oracle)
Development of monitoring tools and processes
Third-level support for various applications

Feb 2014 - Jan 2015

1 year

Design/Development/Consulting – SharePoint Server

Design, installation, and configuration of a SharePoint server (user management, web content management, collaboration, access deployment)
Operation and support

Dec 2013 - Jun 2015

1 year 7 months

Design/Development/Consulting – Price Comparison Data Management

Design and implementation of an application for capturing, maintaining, and analyzing price comparison data
Integration of an existing warehouse data system via ODBC
Excel export from MS Access

Mar 2012 - Jan 2014

1 year 11 months

Design/Development/Consulting – Supply Chain Management

Development and further enhancement of various backend components of an application for master data management and maintenance in supply chain management
Creation and optimization of queries, implementation of various reports and exports (Access, Excel, SharePoint)
Development of various interface components (Data Warehouse, SAP)
Rollout management and incident management

Mar 2011 - Feb 2018

7 years

Design/Development/Consulting – Event Management

Further development of an existing application for capturing, maintaining, and analyzing event management data
Migration to SQL Server as the backend database
Performance tuning
Integration of new features
Incident and change request management with SharePoint
Project management

Sep 2010 - Dec 2017

7 years 4 months

Design/Development/Consulting – Zarafa Mail Server

Planning, installation, and configuration of a Zarafa mail server (with Postfix and Fetchmail) including web app
Operation and support

Jul 2005 - Jul 2014

9 years 1 month

Design/Development/Consulting – Construction Industry, Custom Software (ERP System)

Implementation of various modules for a system for central operating and result accounting, cost capture, financial analysis, cost accounting, time tracking, participation management, subcontractor/supplier management, guarantee management, and flat-rate tax recording
Extension of existing interfaces to SAP, Dynamics, and Navision
Development of administration tools and complex analysis tools
Process administration
Third level support for all applications
Porting of multiple databases from MS SQL Server 2000 to 2008

Industry Experience

See where this freelancer has spent most of their professional time.

Experienced in Information Technology, Construction, Professional Services, Retail, Food and Beverage, and Manufacturing.

Information Technology

Construction

Professional Services

Retail

Food and Beverage

Manufacturing

Business Area Experience

See which departments and functions this freelancer has contributed to most.

Experienced in Information Technology, Operations, Project Management, Finance, Accounting, and Quality Assurance.

Information Technology

Operations

Project Management

Finance

Accounting

Quality Assurance

Skills

Special Skills

Design, Programming, And Use Of Relational Databases
Application Development For Relational Databases
Business Process Optimization
E-invoicing / Electronic Invoices (Xml, Xrechnung, Zugferd)
Designing And Implementing Interface Programs
Performance Tuning For Relational Databases
Migration And Software Porting
Client-server Solutions
Application Development (Design And Implementation)
Crm Systems (Customer Relationship Management)
Solaris/unix/sinix Shell Scripting
Sharepoint / Sharepoint Server
Mail Servers (Kopano, Zarafa)
Website Design, Programming, And Deployment

Focus Areas Of Recent Projects

Agile Software Development
Developing Various Applications In Sql Server And Windows Environments
Developing Business Processes For E-invoicing (Electronic Invoices)
Implementation Of Custom Software (Windows, Ms Access, Vba, Sharepoint)
Upgrading/migrating Access Databases (Various Uses)
Designing And Implementing Interfaces (Oracle / Sql Server)
Business Process Optimization
Project Leadership / Project Management
Process Optimization / Monitoring In E-commerce
Developing Various Applications In Oracle And Unix/solaris Environments
Customer Relationship Management
Online Quality Management / Business Process Management
Data Deletion (Big Data)

Databases

Ms Sql Server (Transact-sql)
Oracle (Pl/sql, Sql*plus)
Ms Access
Mysql
Postgresql
Informix (Sql, Esql/c, 4gl In Online And Se)

Operating Systems

Windows / Windows Server
Sunos (Solaris), Unix, Ubuntu
Ms-dos

Programming Languages

Transact-sql (Ms Sql Server)
Pl/sql, Sql*plus (Oracle)
Visual Basic (Vba, Ms Access, Ms Word, Ms Excel, Ms Outlook)
Sql, Esql/c, 4gl (Informix)
Shell (Solaris, Unix, Sinix, Ubuntu)
Ms-dos Batch, Windows Powershell
Html
Python
C

Tools

Sql Server Enterprise Manager, Sql Query Analyzer, Ssms
Sql Server Integration Services (Ssis), Sql Server Reporting Services (Ssrs)
Ms Visual Studio
Ms Power Apps
Toad, Pl/sql Developer, Oracle Sql Developer
Red Gate Sql (Data) Compare
Mysql Workbench
Confluence Wiki Software (Atlassian)
Sharepoint, Sharepoint Designer
Servicenow, Iet Itsm (Integrated Service Level Management)
Svn (Subversion), Tortoisesvn, Visualsvn Server
Rcs, Cvs, Wincvs
Control-m
Joomla (Cms)
Nextcloud
Taiga (Project Management)
Idoc (Sap)
Webmethods
Awk / Sed

Work Areas / Methods

Accounting / Electronic Invoices
Agile Software Development / Prototyping / Scrum
Application Development / Custom Software
Order Processing
Business Process Management
Controlling
Customer Relationship Management
Database Administration
Database Design / Data Modeling / Relational Databases
Devops / Continuous Delivery
E-commerce (Couponing, Online Shops, Promotions, Online Quality Management)
E-invoicing / Electronic Invoices (Xml, Xrechnung, Zugferd)
Full Stack Development
Business Process Optimization
Incident Management
Internet/intranet Development
Design And Implementation
Mail Servers, Messaging
Marketing / Sales
Migration / Porting
Monitoring (Processes, Databases)
Project Leadership / Project Management / Project Controlling
Rollout
Interfaces
Supply Chain Management
Support
System Administration
Tuning
Workflow

Languages

German

Native

English

Advanced

Education

Munich University of Applied Sciences

Business Informatics · Munich, Germany

Statistics

Experience

Total positions 19

Experience in Information Technology 14.5 y

Avg length 2 y 8 m

Longest experience 9 y

Global Experience

Countries worked in 1 (Germany)

Primary country Germany

Expertise

Recent roles Support/Development/Consulting – Process Development, E-Invoicing, XRechnung, ZUGFeRD, Design/Development/Consulting – Digital Print Products, Configuration and Pricing, Design/Development/Consulting – Sales Price Calculation

Main industries Information Technology, Construction, Professional Services

Main business areas Information Technology, Operations, Project Management

Profile

Created

December 2023

Last Update

January 2026

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Ernst based?

Ernst is based in Munich, Germany.

What languages does Ernst speak?

Ernst speaks the following languages: German (Native), English (Advanced).

How many years of experience does Ernst have?

Ernst has at least 21 years of experience. During this time, Ernst has worked in at least 16 different roles. The average length of individual experience is 1 year and 1 month. Note that Ernst may not have shared all experience and actually has more experience.

What roles would Ernst be best suited for?

Based on recent experience, Ernst would be well-suited for roles such as: Support/Development/Consulting – Process Development, E-Invoicing, XRechnung, ZUGFeRD, Design/Development/Consulting – Digital Print Products, Configuration and Pricing, Design/Development/Consulting – Sales Price Calculation.

What is Ernst's latest experience?

Ernst's most recent position is Support/Development/Consulting – Process Development, E-Invoicing, XRechnung, ZUGFeRD.

Which industries is Ernst most experienced in?

Ernst is most experienced in industries like Information Technology, Construction, and Professional Services. Ernst also has some experience in Retail, Food and Beverage, and Manufacturing.

Which business areas is Ernst most experienced in?

Ernst is most experienced in business areas like Information Technology, Operations, and Project Management. Ernst also has some experience in Finance, Accounting, and Quality Assurance.

Which industries has Ernst worked in recently?

Ernst has recently worked in industries like Information Technology, Professional Services, and Manufacturing.

Which business areas has Ernst worked in recently?

Ernst has recently worked in business areas like Information Technology, Operations, and Project Management.

What is Ernst's education?

Ernst attended Munich University of Applied Sciences for Business Informatics.

What is the availability of Ernst?

Ernst is immediately available full-time for suitable projects.

What is the rate of Ernst?

Ernst's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.

How to hire Ernst?

To hire Ernst, click the Meet button on the profile to request a meeting and discuss your project needs.

Average rates for similar positions

Rates are based on recent contracts and do not include FRATCH margin.

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900

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Market avg: 870-1030 €

The rates shown represent the typical market range for freelancers in this position based on recent contracts on our platform.

Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.

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