Recommended expert
Claus Kerpen
Developer, Architect
Experience
Apr 2005 - Present
20 years 11 monthsDeveloper, Architect
Freelance Developer
Mar 2003 - Mar 2005
2 years 1 monthConsultant and Developer
ML Systems
Oct 2000 - Mar 2003
2 years 6 monthsConsultant and Developer
CSC Ploenzke
Jul 1999 - Sep 2000
1 year 3 monthsSAP R/3 Basis Consultant
Mannesmann DV
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 (26.5 years) and Professional Services (2.5 years).
Information Technology
Professional Services
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 (26.5 years) and Product Development (23 years).
Information Technology
Product Development
Skills
- Ajax
- Angular
- Angularjs
- Ant
- Aop
- Apache
- Applet
- Arquillian
- Aws
- Axis
- Bamboo
- Bipro
- Bitbucket
- Borland Enterprise Server
- C
- Camunda
- Castor
- Confluence
- Continuus
- Css
- Cvs
- Docker
- Dom4j
- Db2
- Dbunit
- Dbvisualizer
- Dropwizzard
- Eclipse
- Ejb
- Fortran
- Fop
- Frontpage
- Git
- Github
- Glassfish
- Gosu
- Gradle
- Guidewire
- Gwt
- Hibernate
- Html
- Htmlunit
- Httpunit
- Intellibo
- Intellij
- Jaas
- Jakarta Ee
- Java
- Javascript
- Javamail
- Java Ee
- Java Se
- Jaxb
- Jaxp
- Jax-ws
- Jboss
- Jbpm
- Jbuilder
- Jca
- Jdbc
- Jdom
- Jdo
- Jenkins
- Jetty
- Jira
- Jmeter
- Jmock
- Jms
- Jmx
- Jpa
- Jprobe
- Jquery
- Jsf
- Jsp
- Jstl
- Jta
- Junit
- Junitperf
- Kafka
- Keycloak
- Ldap
- Liferay
- Linux
- Liquibase
- Log4j
- Mapstruct
- Maven
- Mockito
- Mongodb
- Ms Reportbuilder
- Ms Sqlserver
- Mysql
- Nexus
- Node.js
- Odata
- Olingo
- Openapi
- Openshift
- Oracle
- Oracle Rdb
- Php
- Pl/sql
- Portlet
- Postgresql
- Rad
- Rest
- Resumeablejs
- Rmi
- Rsa
- Sap R/3
- Servlet
- Soap
- Soapui
- Sonar
- Sourceoffsite
- Spring
- Spring Batch
- Spring Boot
- Spring Data
- Spring Jdbc
- Spring Mvc
- Spring Security
- Spring Webservices
- Sql
- Storedprocedure
- Struts
- Svn
- Swagger
- Swing
- Testng
- Together
- Tomcat
- Tws
- Typescript
- Uml
- Unix
- Vaadin
- Vms
- Vs Code
- Vue.js
- Webservice
- Was
- Wcms
- Webspheremq
- Weblogic Server
- Wicket
- Windows
- Wiremock
- Wps
- Wsdl
- Xml
- Xslt
- Xpath
- Xquery
- Etc.
Languages
German
NativeEnglish
AdvancedEducation
Oct 1993 - May 1999
University of Cologne
Physics studies · Cologne, Germany
Oct 1993 - May 1999
Cardiff University
Physics studies · Cardiff, United Kingdom
Certifications & licenses
TOGAF 8
Sun Certified Java Programmer (SCJP)
Client Server
Jakarta EE Training
SAP-R/3 Basis
Profile
Created
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Frequently asked questions
Do you have questions? Here you can find further information.
Where is Claus based?
Claus is based in Nörvenich, Germany.
What languages does Claus speak?
Claus speaks the following languages: German (Native), English (Advanced).
How many years of experience does Claus have?
Claus has at least 27 years of experience. During this time, Claus has worked in at least 3 different roles and for 4 different companies. The average length of individual experience is 7 years and 8 months. Note that Claus may not have shared all experience and actually has more experience.
What roles would Claus be best suited for?
Based on recent experience, Claus would be well-suited for roles such as: Developer, Architect, Consultant and Developer, SAP R/3 Basis Consultant.
What is Claus's latest experience?
Claus's most recent position is Developer, Architect at Freelance Developer.
What companies has Claus worked for in recent years?
In recent years, Claus has worked for Freelance Developer.
Which industries is Claus most experienced in?
Claus is most experienced in industries like Information Technology (IT) and Professional Services.
Which business areas is Claus most experienced in?
Claus is most experienced in business areas like Information Technology (IT) and Product Development.
Which industries has Claus worked in recently?
Claus has recently worked in industries like Information Technology (IT).
Which business areas has Claus worked in recently?
Claus has recently worked in business areas like Information Technology (IT) and Product Development.
What is Claus's education?
Claus attended University of Cologne for Physics studies.
Does Claus have any certificates?
Claus has 5 certificates. Among them, these include: TOGAF 8, Sun Certified Java Programmer (SCJP), and Client Server.
What is the availability of Claus?
Claus is immediately available for suitable projects.
What is the rate of Claus?
Claus'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 Claus?
To hire Claus, 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.
1200
900
600
300
Market avg: 850-1010 €
Market avg: 850-1010 €
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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