Jörg-Ulrich Hammerbacher - BigData Engineer

Q: Where is Jörg-Ulrich based?

Jörg-Ulrich is based in Friedrichsdorf, Germany and can operate in on-site , hybrid , and remote work models.

Q: What languages does Jörg-Ulrich speak?

Jörg-Ulrich speaks the following languages: German (Native), English (Advanced) .

Q: How many years of experience does Jörg-Ulrich have?

Jörg-Ulrich has at least 30 years of experience. During this time, Jörg-Ulrich has worked in at least 26 different roles . The average length of individual experience is 1 year and 2 months . Note that Jörg-Ulrich may not have shared all experience and actually has more experience.

Q: What is Jörg-Ulrich's latest experience?

Jörg-Ulrich's most recent position is Data flows for health insurance providers .

Q: Which industries is Jörg-Ulrich most experienced in?

Jörg-Ulrich is most experienced in industries like Information Technology , Banking and Finance , and Tourism . Jörg-Ulrich also has some experience in Insurance , Transportation , and Telecommunication .

Q: Which business areas is Jörg-Ulrich most experienced in?

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

Q: Which industries has Jörg-Ulrich worked in recently?

Jörg-Ulrich has recently worked in industries like Information Technology , Insurance , and Banking and Finance .

Q: Which business areas has Jörg-Ulrich worked in recently?

Jörg-Ulrich has recently worked in business areas like Information Technology , Business Intelligence , and Product Development .

Q: What is Jörg-Ulrich's education?

Jörg-Ulrich attended education in Computer Science .

Recommended expert

Friedrichsdorf, Germany

Experience

May 2024 - Present

1 year 11 months

Data flows for health insurance providers

Further development and creation of data flows for health insurance providers
Data management across various storage systems (DB2, MSSQL, PostgreSQL, S3, custom APIs, ...)
Documentation and training
Planning and deployment of NiFi 2.x (major upgrade)
Integrating Grafana for visualization, monitoring, and alerting
Extensive use of the NiFi API to continuously monitor the system and its components

Jan 2024 - Apr 2024

4 months

Setup and development of a BI solution/data platform in the energy sector

Fundamental setup and development of the entire system
Continuous integration of power production data - building ETL flows to connect load profile data from various wind and solar farms
Visualization of power production, prices, etc.
Monitoring, observability, alerting
Automated analyses
Building a security infrastructure (servers, agents) to detect and alert intrusions and security events (OSSEC)
Setting up a private virtual network (OpenVPN server/clients)
Setting up a relay email service

Dec 2023 - Dec 2023

1 month

Further development of a bank-wide data platform

Updating the data platform components at the hosting partner for all environments
Extending extensive NiFi flows for various production applications
Training employees in the technology areas
Anonymization of customer and revenue data

May 2023 - Nov 2023

7 months

Further development, optimization, documentation, and knowledge transfer of an ETL and search solution for corporate customer

Expanding the core business solutions (mainly in NiFi)
Updating development infrastructures (Apache NiFi, Apache Solr cluster, ...)
Load and performance testing with overall system optimizations
Knowledge transfer
System documentation (e.g., tech specs)
Data anonymization for testing purposes

Nov 2021 - Apr 2023

1 year 6 months

Setup and development of a bank-wide data platform

Advising on tool selection
Installing and configuring the data platform components at the hosting partner for all environments
Creating extensive NiFi flows for various production applications
Building a central log server that aggregates production logs and makes them searchable
Training employees in the technology areas
Anonymization of customer and revenue data

Jul 2019 - Sep 2021

2 years 3 months

Development of various IT solutions - especially in the open source search area

Evaluations and proofs of concept
Building core business solutions (mainly in NiFi)
Setting up, distributing, and using development infrastructures (Apache NiFi, Apache Solr cluster, ...)
Load and performance tests with overall system optimizations
Creating the access service layer (RESTful)
Building various security infrastructures

Jan 2018 - Jun 2019

1 year 6 months

Architecture, design, and implementation of a solution for the continuous centralization and updating of globally distributed

Contributing to the core idea of the solution
Prototype implementation
Building the core business solution (mainly in NiFi)
Setting up, distributing, and using development infrastructures (Apache NiFi, Apache Solr cluster, Spring application)
Load and performance tests with overall system optimizations
Creating the access service layer (RESTful)
Ongoing development communication and coordination with client systems to improve the overall solution
Building various security infrastructures

Mar 2011 - Dec 2017

6 years 10 months

Architecture modernization and further development of the enterprise-wide search engines for a large German private bank

Architecture and design of the new system and setup of the platform/the enterprise-wide secure and scalable search engine ecosystem
Load and performance tests with overall system optimizations
Setting up, distributing, and using development infrastructures (Maven, Hudson/Jenkins, Nexus, MySQL, Wiki, Backlog, ...)
Database design with access layers
Development and implementation of project-specific monitoring solutions
Introduction of extensive unit and web frontend tests
System documentation (e.g., TechSpec)
Development and creation of SOAP web service and JSON interfaces for in-house client systems with consultation
Development and integration of a security connector framework
Building various security infrastructures

Nov 2010 - Feb 2011

4 months

Development with load and performance optimizations for the budget-oriented entry of the vehicle configurator of a large company

Building parts of the administration logic (frontend and business logic)
Load and performance tests as well as overall system optimizations
Migrating the application from a BEA cluster to a GlassFish cluster
Automating the entire application (e.g., cron jobs)

Sep 2010 - Jan 2011

5 months

Development of an international web application for identifying protective clothing

Initial setup of the complete development infrastructure
Architecture and design of all middleware services
Concept for the domain model and database design
Results presentations
Support in front-end development

May 2010 - Aug 2010

4 months

New development of the reservation system for a large German tour operator

Analysis of the existing Travel Document Production process
Designing the submodule for the new system in UML
Presenting results
Organizing and conducting ongoing coordination with the Architecture Board
Clarifying, evaluating, and integrating numerous new requirements (features)

Jul 2009 - Apr 2010

10 months

New development of a corporate-wide CRM system for a large German private bank

Technical Lead for the Service Layer team
Planning and tracking of Scrum stories
Coordination and alignment of numerous reference and client systems
Developing, aligning, and implementing architectural topics
Technical integration of reference systems
Detailed design and implementation of service operations

Aug 2008 - May 2009

10 months

New development of a telecommunications monitoring platform

Reviewing and enhancing functional specifications
Developing complete IT concepts and architectural aspects
Implementing complete GUI views (full creation of the interface, integrations and database optimizations; print functionality; ...)
Integrating and connecting a search engine
Introducing unit tests
Coordinating with quality assurance

May 2008 - Jun 2008

2 months

Drafting architecture modernization

Detailed documentation of a future alternative architecture with pros and cons of all involved system components
Supporting the preparation and presentation of results

Jan 2008 - Apr 2008

4 months

Relaunch of the banking portal (extranet)

Enhancement and new development of various portal functions: TableOfContent lists; Login/MyProfile processes and dialogs; voting; online survey; newsletter dispatch; content functions: automated order requests, contact forms, and forwarding functions
Integrating current market and stock exchange data from a supplier into the portal

Mar 2007 - Dec 2007

10 months

Design and implementation of new standalone application components for an intranet-based eCRM system

Concept, design and implementation of the new standalone application component using Java Server Faces (first time deployed at the client) and iBATIS
Ongoing adjustments and improvements to this application component at the request of various departments
Further development of existing eCRM application modules
Introduction of new technologies (JSF, iBATIS) and staff coaching
Execution and analysis of load and performance tests
Presentation of analysis results with recommendations
Implementation of overall system performance optimizations

Jan 2007 - Feb 2007

2 months

Extensions to the corporate intranet and public website

Creation of IT concepts
Goal-oriented coordination with the business unit
Implementation of various “small tasks”

Nov 2005 - Dec 2006

1 year 2 months

Company-wide unique customer identification according to Basel II / US-GAAP

Architecture, design and implementation
Implementation of the Eclipse RCP client (first time deployed at the client)
Build process management
Setup and maintenance of the project wiki
Staff coaching

Jan 2005 - Sep 2005

9 months

Evaluation of an existing software solution and setup and integration of a prototype into the existing booking reservation

Evaluation and recommendation of a partially existing solution
Concept, design and implementation of the new JSF prototype
Participation in strategic company concept and documentation for the “Future Leisure Platform”
Support of product launch in cluster operation

Jan 2002 - Dec 2004

3 years

Design and development of a complete leisure travel system

Co-responsibility for building the software architecture
Design and development of services
Evaluation and development of web services for the communication architecture from the Swing client to the server
Development and setup of the product structure plan and the complete build process using ANT
Setup of the client service layer to encapsulate all client database access
Deployment of the application in cluster mode

Mar 2001 - Dec 2001

10 months

Design and implementation of an intranet eCRM system

Design and implementation of an administration front end and its database design for system user modifications
Implementation of the "Client Profile" component to manage comprehensive customer data
Updated the application from Struts 0.5 to Struts 1.0
Implemented a JavaMail solution for automated email sending for new application accounts
Implemented and enhanced the "TradeList" and "CoreInformation" components
Developed a generic filter (XP-Filter) for dynamic SQL query generation using JDOM

Feb 2001 - Mar 2001

2 months

ATG Dynamo eBusiness Platform training

Designed and implemented transactional enterprise portals with ATG Dynamo
Developed dynamic web components
Administered and configured the Dynamo server platform

Oct 2000 - Feb 2001

5 months

Concept, design, and implementation of a printing system

Server-side development of a printing system for monetary receipts
Database design for managing receipts, printers, and print jobs

Sep 1998 - Sep 2000

2 years 1 month

Analysis, design, and development of a web client

Further development of a rich client for a travel reservation system
Analysis, design, and development of a new web client

Oct 1996 - Aug 1998

1 year 11 months

Concept, analysis, design, development, and introduction of the client software for a travel reservation system

Concept, analysis, design, development, and introduction of the client software
Basic development and creation of a framework
Technical coordination of subsequent application projects

Apr 1995 - Sep 1996

1 year 6 months

New development, object-oriented analysis and design of storage retrieval logistics

Collaborated on the new development of storage retrieval logistics
Object-oriented analysis and design using OMT
Client and server implementations

Industry Experience

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

Experienced in Information Technology, Banking and Finance, Tourism, Insurance, Transportation, and Telecommunication.

Information Technology

Banking and Finance

Tourism

Insurance

Transportation

Telecommunication

Business Area Experience

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

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

Information Technology

Product Development

Quality Assurance

Business Intelligence

Logistics

Project Management

Skills

Apache Nifi (Dataflow) / Apache Solr Search Engine, Big Data Etl / Data Engineer
Object-oriented Analysis, Architecture, Design And Implementation Of Middleware Architectures Based On Java Ee (Java Experience Since 2001)
Development Of Application Software
J2ee
User Interface Development (Rcp, Jsf)
Databases
Apache Nifi (Dataflow)
Apache Solr (Search Engine)
Analysis, Architecture, Design And Implementation Of Middleware Architectures Based On Java Ee
Development Of Application Software (Interfaces, Business Logic, Databases)
Object-oriented Software Development
Systematic Setup And Optimization Of It Project Infrastructures
Coordination And Tracking Of Development Tasks
Technical Project Management
Apache Nifi
Etl
J2ee (Jee)
Ooa/ood (Uml, Omt)
Rup
Xp
Prototyping
Staff Coaching
Scrum
Apache Nifi
Apache Solr
Nifi Registry
Minifi
Pki
Aes
Veracrypt
Ossec
Openvpn
J2se
Jee (Expert)
Grafana
Prometheus
Banana
Superset
Redis Cluster / Sentinel
Visual Studio Code
Eclipse Platform
Rich Client Platform (Rcp)
Kubernetes
Ansible
Jsf Frameworks: Apache Myfaces, Primefaces, Jboss Richfaces, Sun Jsf
Hudson
Jenkins
Cruisecontrol
Ant
Maven
Junit
Easymock
Mockito
Sonarcube
Together
Argouml
Magicdraw
Enterprise Architect
Git
Subversion (Svn)
Cvs
Mks Source Integrity
Continuus
Clearcase
Java
Jdk
Tcp/ip
Http(s)
Ftp
Putty (Ssh)
Struts
Spring
Soa
Web Services
Axis2
Jax-ws
Soapui
Bugzilla
Jira
Mercury Quality Center
Vmware
Oracle Vm Virtualbox
Mingle (Scrum Tool)
Jmeter
Hp Idol
Manifoldcf
Qgis
Postfix
Microsoft Office
Libreoffice
Mariadb / Mysql
Postgresql
Oracle
Hsqldb
Sybase
Informix
Jdbc
Hibernate + Ehcache
Ibatis
Db2
Redis
Flyway
Bea Weblogic
Jboss
Apache Tomcat
Jetty
Ibm Websphere
Macromedia Jrun
Glassfish
Java
Xml
Sql
Jsp
Jsf
Ejb
Xslt
Xsd
Jaxb
Jms
Jpa
Jax-ws
Html
Javascript
Json
Jsonpath
Jquery
Tcl
Unix (Linux, Hp-ux, Ibm Aix, Solaris)
Windows (Nt, 2000, Xp, Vista, 7, 8, ...)
Many Years Of Experience In Software Projects
Big Data Flows
Design And Implementation Of Software Architectures (3-tier) Based On Java Ee And Their Deployment
Technical And Economic View Of Project Goals
Coordination And Communication Between Business And It
Strong Team Skills With A Clear Focus On Goals
High Level Of Responsibility And Initiative
Use Of Open Source Solutions In Enterprise Applications

Languages

German

Native

English

Advanced

Education

Diploma in Computer Science (FH) · Computer Science

Statistics

Experience

Total positions 26

Experience in Information Technology 11 y

Avg length 1 y 1 m

Longest experience 6 y 9 m

Expertise

Recent roles Data flows for health insurance providers, Setup and development of a BI solution/data platform in the energy sector, Further development of a bank-wide data platform

Main industries Information Technology, Banking and Finance, Tourism

Main business areas Information Technology, Product Development, Quality Assurance

Profile

Created

September 2025

Last Update

March 2026

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Frequently asked questions

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

Where is Jörg-Ulrich based?

Jörg-Ulrich is based in Friedrichsdorf, Germany and can operate in on-site, hybrid, and remote work models.

What languages does Jörg-Ulrich speak?

Jörg-Ulrich speaks the following languages: German (Native), English (Advanced).

How many years of experience does Jörg-Ulrich have?

Jörg-Ulrich has at least 30 years of experience. During this time, Jörg-Ulrich has worked in at least 26 different roles. The average length of individual experience is 1 year and 2 months. Note that Jörg-Ulrich may not have shared all experience and actually has more experience.

What roles would Jörg-Ulrich be best suited for?

Based on recent experience, Jörg-Ulrich would be well-suited for roles such as: Data flows for health insurance providers, Setup and development of a BI solution/data platform in the energy sector, Further development of a bank-wide data platform.

What is Jörg-Ulrich's latest experience?

Jörg-Ulrich's most recent position is Data flows for health insurance providers.

Which industries is Jörg-Ulrich most experienced in?

Jörg-Ulrich is most experienced in industries like Information Technology, Banking and Finance, and Tourism. Jörg-Ulrich also has some experience in Insurance, Transportation, and Telecommunication.

Which business areas is Jörg-Ulrich most experienced in?

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

Which industries has Jörg-Ulrich worked in recently?

Jörg-Ulrich has recently worked in industries like Information Technology, Insurance, and Banking and Finance.

Which business areas has Jörg-Ulrich worked in recently?

Jörg-Ulrich has recently worked in business areas like Information Technology, Business Intelligence, and Product Development.

What is Jörg-Ulrich's education?

Jörg-Ulrich attended education in Computer Science.

What is the availability of Jörg-Ulrich?

Jörg-Ulrich is immediately available part-time for suitable projects.

What is the rate of Jörg-Ulrich?

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