Enterprise JavaBeans Experts in Cologne
matched in minutes from over 15,000 CVs with the power of AI.Hire experts who build and support EJB session beans, message-driven beans, and Jakarta EE back ends, and who can steady legacy Java EE systems during refactors, upgrades, and production fixes. Get fast, precise matching with vetted, available freelancers.
Meet FRATCH Experts in Cologne, who have recently used Enterprise JavaBeans
Rainer Langbehn
Last position:
Senior IT Consultant, Senior Software Architect, Senior Software Developer, Senior DevOps Engineer at Techniker Krankenkasse
Automation of the database major / minor releases for the TKeasy project
Concept for database major / minor release automation
As-is analysis
Evaluation of Redgate Flyway functionality
Concept creation
Products: Redgate Flyway, GitHub, Quest, Erwin Data Modeller, Oracle, Atlassian Jira, Atlassian Confluence
Skills: Docker, Continuous Delivery, Continuous Integration, Redgate Flyway, Major Releases, Minor Releases
Louis Nguenkam
Last position:
Specialist in Adobe Experience Manager & Microservices at Nguenkam Consulting & Engineering
Java 11/21
Springboot
Swagger/OpenApi
Azure Pipelines
Trivy Integration
Apache Sling
OSGI
Java Content Repository (JCR)
Apache Jackrabbit Oak
Adobe HTL
GraphQL
Maven
GitLab
IntelliJ
Azure Cloud
Azure DevOps
Terraform
AEM specialist in the Scrum team
Development and deployment of microservices via Open API interfaces
Operation of microservices in the Azure Cloud
Implementation of AEM modules and integration with microservices
Member of the knowledge transfer team and a backend coordination team
Andreas Beckers
Last position:
Senior Frontend Developer at Roadex
- Development of an app
- Technologies: React Native, Expo, SupaBase, TypeScript, GitHub, Trello
Last position:
Rewe Digital
- Creation of Spring Boot integration tests
- Creation of JUnit tests for the coupon system
- Creation of component tests for Kafka topics
- Creation of CI/CD pipeline scripts
- Creation of UI tests with Playwright
- Creation of UI tests with Cypress
- Review of developer unit tests
- Planning the test architecture for integration tests
- Creation of the test automation concept
- Evaluation and creation of test reports
Fabian Zur Heide
Last position:
Freelance IT Specialist
IT specialist Application Engineering / Software Development since 2012
Allal Kharaz
Last position:
Java Senior Full Stack Developer at Insurance ÖRAG
- Further development of a policy administration system (contract/claims) for the legal expenses insurer ÖRAG.
- My role: Senior Software Developer.
- The team consists of 12 developers.
- Technologies used: Java 8/21, Java EE, Quarkus, WebLogic, JPA, RabbitMQ, JTA, CI, CD, Jenkins, DB2, Maven, Jenkins, GIT (bitbucket) later GitLab, Junit, Elasticsearch, Mockito, Jira, SonarQube, Scrum, React, Workflow
- Migration and modernization of legacy systems: rewrote C and C++ code in Java to improve maintainability, scalability, and performance. Refactored Python into Java, including optimization and integration into modern architectures.
- Study on the use of AI (Codex) for implementing a Java feature. The goal is to compare the time spent and productivity of AI-supported development with a classic implementation by a developer. The results should show how strongly the use of AI affects development time and efficiency.
- Development of the following tariff calculators for the years 2024/2026: private, companies, doctors, farmers, owner-occupied G + H, landlords, traffic, club, top managers, sales representatives, special criminal law, savings bank, municipal, BayGT, doctors, Dehoga
Discover over 15,000 top freelancers
Statistics of experts using Enterprise JavaBeans
Aggregated from the professional profiles of matched freelancers.
Experience
28 years (Germany: 25 years)
Position duration
3.3 years (Germany: 2.7 years)
Positions per freelancer
13
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Banking and Finance, Automotive
Bachelor's degree or higher
100% (Germany: 98%)
Master's degree or higher
100% (Germany: 70%)
Certifications per freelancer
2
Most common languages
German, English, French
Speak two or more languages
100% (Germany: 93%)
Based on our profile pool as of 30 Aug 2026.
Daily rate distribution
The chart shows how the daily rates of freelancers in this technology in Cologne are distributed, based on recent contracts on our platform. Each bar covers a rate range — its height shows how many freelancers charge within that range.
Average rates of experts in Cologne using Enterprise JavaBeans
Rates are based on recent contracts and do not include FRATCH margin.
The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
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 30 Aug 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
About the technology
What EJB Is
Enterprise JavaBeans, often called EJB, is a server-side Java technology for business logic inside Java EE and Jakarta EE applications. It is used for transactional services, security-sensitive workflows, and components that need container services such as lifecycle handling and remote access.
Where It Fits
EJB often sits in the middle tier of enterprise systems and connects web layers, databases, queues, and legacy services. It appears in banking, insurance, logistics, public-sector, and internal workflow systems where stable transaction handling matters.
Common Work
- Session beans for business services and orchestration
- Message-driven beans for asynchronous processing
- Transaction and security configuration
- Integration with JPA, JMS, and JDBC
- Migration from older Java EE code to newer Jakarta EE patterns
Tooling And Stack
Strong specialists work across application servers such as WildFly, Payara, and WebLogic, plus build tools like Maven or Gradle. They also need solid Java, SQL, JMS, JPA, and debugging skills to trace container-managed behavior and integration faults.
When To Bring In Help
Companies bring in EJB experts when an old application must stay stable while features keep moving. They are also useful when transactions fail under load, remote calls need cleanup, or a Cologne team needs short-term support for a release, audit, or server migration.
What Good Experts Do
Good EJB professionals read legacy code quickly, find hidden coupling, and reduce risk without breaking production. They write clear service boundaries, tune transaction use, and know when to keep EJB and when to move parts of the system toward simpler Jakarta EE services.
Frequently asked questions
Not sure where to start with Enterprise JavaBeans? These answers cover the essentials.
Enterprise JavaBeans is used for server-side business logic in Java enterprise systems. Teams use it for transaction-heavy services, asynchronous message handling, security-controlled workflows, and integration with databases or message queues.
EJB is still relevant where mature Java EE or Jakarta EE systems already rely on it. Spring is often chosen for new services, but EJB remains common in established applications that need container-managed transactions, security, and remote component access.
A strong Enterprise JavaBeans specialist can keep legacy systems stable, fix transaction issues, and improve component design without unnecessary rewrites. They should also understand the surrounding stack, especially application servers, JPA, JMS, and SQL.
The best EJB experts usually bring deep Java knowledge plus JPA, JMS, JDBC, SQL, and application server experience. For older enterprise systems, familiarity with WebLogic, WildFly, or Payara is often essential.
A Enterprise JavaBeans project benefits most from someone who has worked on production systems, not just tutorials. The important signs are clean transaction handling, safe refactoring, and the ability to read older code bases quickly.
Yes, EJB work is often well suited to remote collaboration because much of the task is code review, analysis, and controlled change. On-site time can still help when access to an old application server, sensitive systems, or cross-team workshops is needed.
Look for clear explanations of transaction boundaries, careful handling of container services, and practical experience with production incidents. A strong Enterprise JavaBeans professional should also be able to explain why a change is safe, not just how to code it.
EJB stands for Enterprise JavaBeans, the component model used in many Java EE enterprise applications. In older systems, it often appears alongside session beans, message-driven beans, and container-managed transactions.
The average hourly rate of freelancers in Cologne, Germany who have used Enterprise JavaBeans in their recent projects is 88 €, which corresponds to a daily rate of about 706 € based on an 8-hour working day.
Of the freelancers in Cologne, Germany who have used Enterprise JavaBeans in their recent projects, 100% hold at least a Bachelor's degree and 100% hold at least a Master's degree.
On average, freelancers in Cologne, Germany who have used Enterprise JavaBeans in their recent projects have 28 years of professional experience, with a single engagement typically lasting around 3.3 years.
The most common languages among freelancers in Cologne, Germany who have used Enterprise JavaBeans in their recent projects are German (100%), English (100%), and French (50%).
The most common industries among freelancers in Cologne, Germany who have used Enterprise JavaBeans in their recent projects are Information Technology (100%), Banking and Finance (67%), and Automotive (50%).
The most common business areas among freelancers in Cologne, Germany who have used Enterprise JavaBeans in their recent projects are Information Technology (100%), Product Development (83%), and Quality Assurance (67%).
Main locations of FRATCH Experts, who have recently used Enterprise JavaBeans
Our freelancers and interim experts are at home across the DACH region — available on-site in the major business hubs or fully remote. Choose a location to discover matched specialists, local market insights and up-to-date availability.
Berlin Hamburg Munich 
Cologne Frankfurt Stuttgart Dusseldorf Leipzig Dortmund Essen Bremen Dresden Hanover Nuremberg 
Munich Request a free demo
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Philipp Thomaschewski
FRATCH CEO
