Ralf Scholler - Senior Java Consultant and Developer

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Michelbach, Germany

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Experience

Apr 2024 - Jul 2025

1 year 4 months

Senior Consultant / Developer

Überall Lokal

Development of a marketplace for local retailers
Technologies: Java, ORACLE, Ingres, REST, Spring Boot, Angular, nginx.

Nov 2021 - Mar 2024

2 years 5 months

Business Analysis, Test Analysis, Product Owner, Team Lead Development/Test

Authority/Public Sector

Project support as part of a large strategic process to implement a financial process.
Support in the specification, creation of the requirements document, and requirement documentation.
Business analysis, test analysis, product owner, and team lead development/test.
Technologies: Elster/Ginster/XML, Confluence, Scrum, JIRA, UML, use case diagrams, activity diagrams.

Nov 2020 - Mar 2021

5 months

Consultant

Allianz Global Investors

Consulting to achieve BaFin requirements.
Analysis of the business managed applications that do not comply with the KAIT requirements of BaFin.
Development of proposals on how the KAIT requirements can be met.

Apr 2020 - Oct 2020

7 months

Consultant

R&V Versicherung

Building a documentation platform for on-premise cloud.
Analysis of the cloud documentation.
Development of a concept for designing a documentation platform for training measures, documentation, and knowledge sharing.
Building the documentation platform with Confluence.
Technologies: Confluence, JIRA.

May 2019 - Feb 2020

10 months

Software Developer, Project Manager, Business/Requirements Engineer

DVAG Deutsche Vermögensberatung

Analysis, design, and implementation of software to clean up the data inventory in the DVAG cloud environment.
Analysis, design, and implementation of software to migrate the DVAG cloud data inventory from ORACLE to Microsoft Azure.
Organization and preparation of the DVAG cloud migration to Microsoft Azure.
Technologies: Java, JUnit, Mockito, Oracle, JIRA.

Jan 2019 - Apr 2019

4 months

Software Developer

Helaba Invest

Development of software for financial accounting.
Technologies: Java, JUnit, Mockito, Xentis, Final, Doxis, Oracle, JIRA, CI/CD.

Dec 2018 - Jan 2019

2 months

Software Developer

Porting a web application from AngularJS to Angular 7 / Typescript.
Migration of the server to Spring Boot for access to a MySQL database via REST interface.
Technologies: Angular 7, Typescript, REST, Java, JUnit, Mockito, JSON, MySQL, JDBC, IntelliJ, Git.

Jun 2018 - Oct 2018

5 months

Project Manager, Business/Requirements Engineer

Deutsche Bank

New development of software for managing public funding programs.
Setup and initial management of the design and implementation.
Business requirements analysis and coordination of step-by-step implementation by an Indian supplier.
Management of a project to create the essential prerequisites for the new development.
Development of a configurable test data generator in Java and ORACLE for a migration project.
Technologies: Java, JUnit, Mockito, ORACLE, IntelliJ, git, maven, Microservices.

Jan 2016 - Oct 2017

1 year 10 months

Germany

Component Owner, Project Manager, Business/Requirements Engineer

Landeshauptstadt München

Responsible for the life cycle management of several IT software systems as Product Owner.
Interface between the IT department, city departments, and vendors.
Requirements gathering, planning, design, and identification of optimization potential.
Quality management, configuration management, release management, and architecture support.
Handling escalations and conflicts as a mediator.
Migration of applications and databases from legacy servers to a virtualized environment, including technical design and execution of the database migration.
Technologies: ORACLE, PL/SQL, architecture.

Jul 2015 - Oct 2015

4 months

Java Developer

Postbank

Migration and further development of a web application from Apache Struts to the Apache Wicket framework.
Development of reusable modules such as display panels for accounts.
Development of CSS classes for a consistent look and feel (web usability).
Technologies: Java, JSP, JavaScript, Jquery, Struts, Apache Wicket, JUnit, Mockito, http, Eclipse, IntelliJ, Maven, SVN, HTML, CSS, HP ALM, Git.

Jun 2014 - Mar 2015

10 months

Java Developer

ING DIBA

Migration of an internal bank CRM application from Apache Struts to the Apache Wicket framework.
Ensured parallel operation of Struts and Wicket screens during the migration.
Worked on technical concepts for new developments and coordinated business topics with departments.
Developed reusable modules and CSS classes for web usability.
Technologies: Java, JSP, Struts, Apache Wicket, JUnit, Mockito, http, Eclipse, IntelliJ, Maven, SVN, HTML, CSS, Jenkins.

Nov 2012 - Nov 2013

1 year 1 month

Germany

Developer

AKDB

Development of Java software for a central information system for state population registers.
Development of technical concepts for a re-engineering of the architecture.
Creation of user stories for the business logic.
Technologies: Java, JUnit, http, JBOSS, Hibernate, JDBC, Eclipse, Maven, SVN, HTML, CSS, OSCI, Scrum, PL/SQL, architecture, Jenkins, test automation, CI/CD.

Apr 2011 - Jun 2012

1 year 3 months

Developer

1und1

Development of a web client for mobile devices based on the Java Wicket framework.
Development of reusable modules and CSS classes to standardize web usability.
Technologies: Java, JUnit, JMockit, Wicket, REST, XML, JAXB, JSON, http, TOMCAT, Eclipse, IntelliJ, Selenium, Maven, SVN, Git, HTML, CSS, Spring, Scrum, test automation.

Nov 2010 - Dec 2010

2 months

Consultant

CBS (Click & Buy)

Creation of an RFP for a CRM system using requirement engineering.

Aug 2008 - Nov 2009

1 year 4 months

Consultant

E-Plus

Design and implementation management for the porting of a WIN32-based registration and activation system to a web service-based system.
Design and implementation management of a web service-based dealer interface for customer registration and activation.
Analysis of existing business processes.
Methods: requirement engineering, project management.

Jan 2007 - Apr 2008

1 year 4 months

Germany

Consultant

Loyalty Partner

Design and development of a monitoring application for interface monitoring between subsystems such as Siebel Hospitality, Loyalty Systems, and CRM.
Creation of a customization guide for the Loyalty Bonus System LMS by analyzing a Java EE application based on Struts/Hibernate/Spring.
Design and development of a C application to initialize and load an Oracle database for one billion records using real data.
Methods: Requirement Engineering.

Oct 2005 - Dec 2006

1 year 3 months

Project Architect

Adidas

Integration of the miadidas environment into the Adidas U.S. eCommerce platform, including synchronization of user data.
Development of a data model for miadidas to support new features and existing supply chain applications.
Architect for the Online Catalog project to improve customer interaction based on Interwoven Teamsite and Mediabin.
Documentation of architecture descriptions in UML with the ARIS Toolset.
Technologies: Requirement Engineering, Java, JDBC, ORACLE, project management.

Jan 2003 - Dec 2005

3 years

Germany

Project Architect, Senior Consultant

Solvatis Consult GmbH & Co. KG

Architect in the miadidas project and in the Mercury ITG project for consolidating data models.
Senior consultant for logistics at DHL: carried out a study on the use of the Easylog software and developed an analysis application for data inventories.
Senior consultant for telecommunications: responsible for product management, development, and marketing of the EBPP product (electronic bill presentment and payment).
Design and management of system extensions for telecom companies and billers.
Project management for application changes at Talkline.

Jan 2002 - Dec 2003

2 years

United States

Strategy and concept developer

Development of strategies and concepts for the use of the internet in healthcare in the USA.

Jan 2000 - Dec 2002

3 years

United States

Lead Consultant and Architect

PCS One Lancaster

Consulting for a migration of user data from the BSCS system to AMDOCS.
Analysis of the BSCS environment as well as design and development to correct invalid data.
Design and development of an application to migrate user data from AMDOCS to BSCS for prepaid and postpaid customers.
Technologies: Requirement Engineering.

Jan 2000 - Dec 2000

1 year

Greece

Lead Consultant and Architect

Cosmote

Project management for the migration of a modified BSCS system to a new standard version.
Management of all involved vendors and reporting to the board.
Successful completion of the migration without any impact on revenue and reputation.

Jan 1999 - Dec 2000

2 years

Turkey

Lead Consultant

Turkcell

Analysis and evaluation of billing processes to improve throughput.

Jan 1999 - Dec 2000

2 years

Italy

Lead Consultant and Architect

Wind

Analysis and design of a Best Option Plan system to determine the optimal tariff for customers.
Analysis and evaluation of business processes to optimize the billing environment.
Support for management in building a local software development team for analysis, design, testing, and go-live.
Methods: Requirement Engineering.

Jan 1999 - Dec 1999

1 year

Israel

Lead Consultant

Orange

Analysis and evaluation of billing processes with the aim of improving throughput.

Jan 1995 - Dec 1998

4 years

Malaysia

Lead Consultant and Architect

Binariang

Design and implementation of an Interconnect Settlement System to support scenarios such as Equal Access.
Solution Architect for the extension of the GSM system with fixed line, information, and entertainment services.
Development of an online frontend for the ordering process and a duplex interface to BSCS.
Design of an enterprise data model.
Methods: Requirement Engineering.

Jan 1995 - Dec 1998

4 years

Indonesia

Lead Consultant and Architect

Excelcom

Requirements analysis and specification of changes for the BSCS billing system.
Design and implementation of a subsystem for processing incoming payment flows from banks.
Design and implementation of a prepaid application for communication with the BSCS system, including supplier management.

Jan 1995 - Dec 1998

4 years

Germany

Lead Consultant and Architect

LHS

Analysis and development of a prototype for a CORBA-based prepaid backend system in Java and C++.
Achieving new throughput values in testing at Excelcom Indo in Jakarta.
Technologies: Java, C, JDBC, ORACLE.

Jan 1994 - Dec 1995

2 years

Italy

Lead Consultant

Omnitel

Lead consultant for BSCS integration and customization.

Jan 1994 - Dec 1994

1 year

France

Consultant

France Telecom

Integration of the BSCS rating engine into the existing billing system.
Design and implementation of the changes as well as training of the partner's staff.

Jan 1994 - Dec 1994

1 year

Russian Federation

Lead Consultant

US West

Lead consultant for BSCS integration and customization.

Jan 1992 - Dec 1994

3 years

Germany

Application Developer and Architect

LHS

Responsible for the design and development of the rating engine of BSCS.

Jan 1984 - Dec 1992

9 years

Germany

Mathematician / Software Analyst

Dr. Jens Grumann Datenkommunikation GmbH

Selection of mathematical methods for the semi-automatic analysis of software applications.
Development of an application for the semi-automatic documentation of existing COBOL applications as part of an EU-funded project.
Collaboration with leading European universities.

Industry experience

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

Experienced in Information Technology, Telecommunication, Government and Administration, Retail, Banking and Finance, and Transportation.

Information Technology

Telecommunication

Government and Administration

Retail

Banking and Finance

Transportation

Business area experience

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

Experienced in Information Technology, Product Development, Project Management, Research and Development, Business Intelligence, and Quality Assurance.

Information Technology

Product Development

Project Management

Research and Development

Business Intelligence

Quality Assurance

Skills

Artificial Intelligence

Pytorch
Jupyter Notebook
Pycharm
Langchain

Programming Languages

Java
Javascript
Typescript
C / C++
Java Server Pages
Html, Html5, Dhtml
Xml
Css
Java Script
Basic
Fortran
Cobol
Assembler
Vba
Angularjs
Angular

Databases

Oracle, 7.X To 9.1
Database Design
Database Administration
Sql Programming
Embedded Sql
Microsoft Access
Microsoft Sql Server
Mysql

Web Technologies & Tools

Docker
Kubernetes
Microservices
Continuous Integration / Continuous Development, Cicd, Ci/Cd
Test-Driven Development
Test Automation
Teamcity
Jfrog Artifactory
Apache Wicket
Swing
Jaxb, Json
Junit, Mockito, Hamcrest
Http
Rest
Rest Apis
Restful Web Services Using Spring
Hibernate
Jdbc
Jquery
Corba
Springboot

Operating Systems

Unix, Linux And Derivatives
Microsoft Windows
Windows Server
Macos

Miscellaneous

Apache Web Server
Apache Archiva
Tomcat Jsp Server
Jboss
Macromedia Flash
Adobe Photoshop
Eclipse
Intellij Idea
Selenium
Testng
Maven
Svn
Git
Bitbucket
Atlassian
Oop
Agile Development
Microsoft Excel Xlt
Hp Alm
Jira
Confluence
Artifactory
Jenkins
Jenkins Pipeline
Veracode
Sonarcube
Springboot
Soap Ui & Postman
Agile
Scrum

Languages

German

Native

English

Intermediate

Education

Dipl. Math. · Mathematics

Certifications & licenses

Statistics

Experience

Total positions 32

Experience in Information Technology 19.5 y

Avg length 1 y 9 m

Longest experience 8 y 11 m

Global experience

Countries worked in 10 (Germany, United States, Italy, Greece, Turkey, +5)

Primary country Germany

Expertise

Recent roles Senior Consultant / Developer, Business Analysis, Test Analysis, Product Owner, Team Lead Development/Test, Consultant

Main industries Information Technology, Telecommunication, Government and Administration

Main business areas Information Technology, Product Development, Project Management

Qualifications

Highest degree Master

Certifications earned 1

Profile

Member since

August 2025

Last update

August 2026

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Frequently asked questions

Have questions? Find more information here.

Ralf is based in Michelbach, Germany and can operate in on-site, hybrid, and remote work models.

Ralf speaks the following languages: German (Native), English (Intermediate).

Ralf has at least 37 years of experience. During this time, Ralf has worked in at least 16 different roles and for 29 different companies. The average length of individual experience is 1 year and 2 months. Note that Ralf may not have shared all experience and actually has more experience.

Based on recent experience, Ralf would be well-suited for roles such as: Senior Consultant / Developer, Business Analysis, Test Analysis, Product Owner, Team Lead Development/Test, Consultant.

Ralf's most recent position is Senior Consultant / Developer at Überall Lokal.

In recent years, Ralf has worked for Überall Lokal and Authority/Public Sector.

Ralf is most experienced in industries like Information Technology, Telecommunication, and Government and Administration. Ralf also has some experience in Retail, Transportation, and Banking and Finance.

Ralf is most experienced in business areas like Information Technology, Product Development, and Project Management. Ralf also has some experience in Research and Development, Business Intelligence, and Quality Assurance.

Ralf has recently worked in industries like Government and Administration and Information Technology.

Ralf has recently worked in business areas like Information Technology, Business Intelligence, and Quality Assurance.

Ralf holds a Master in Mathematics.

Ralf has 1 certificate: ITIL Foundation Certificate.

The availability of Ralf needs to be confirmed.

Daily rate distribution

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<€640 €800-960 €960-1120 €1120+

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Average rates for similar positions

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Daily rate avg. 865 €

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Median rate 840 €

The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.

Calculated based on our freelancers’ daily rates as of 28 Aug 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.