Enterprise JavaBeans Experts in Germany
with precise AI matching and vetted, available freelancersHire experts who modernize EJB applications, design Jakarta EE services and connect enterprise systems with JPA, JMS and application servers. FRATCH matches you quickly with precise, vetted and available freelancers for your project.
Meet FRATCH Experts in Germany, who have recently used Enterprise JavaBeans
Timo H.
Last position:
Software Developer at Smiths Detection
- Extension of a Swing-based UI for recording Security Restricted Articles during baggage screening.
- Introduction of a new workflow for recording Deboarding Events.
- Extension of the reporting system for Security Restricted Articles and Deboarding Events.
- Implementation using JBoss Wildfly, PostgreSQL, spring-boot 3.x, Java 8/21, Swing, JSF, JAX-RS/Resteasy, Docker, Maven, Kiro.
Michael S.
Last position:
IT & Test Consultant at Testing Experts GmbH
AI Readiness - Part 3: Creating an e-book on the use of AI in software testing
- Designed and created an e-book on the sensible and safe use of AI in software testing from the perspective of an experienced test expert.
- Used generative AI (ChatGPT, Perplexity Pro) as a sparring partner for structuring, wording suggestions and creating variations, with all content finally reviewed and approved using my own expertise.
- Developed practical insights into the opportunities and risks of AI in testing, with a special focus on collaboration between testers and AI instead of “tester vs. AI”.
- Title: “11 starke Gründe: Dream-Team statt Rivalen - Tester und KI sind gemeinsam unschlagbar”
- Subtitle: “Wie Mensch und Maschine im Softwaretest das perfekte Team bilden – und warum reines KI-Testing riskant ist.”
- Planned use of the e-book as a basis for workshops, customer meetings or internal training.
- Technology: Generative AI, ChatGPT, Perplexity Pro, Microsoft Word, Adobe Acrobat, many years of hands-on professional testing experience, common sense.
Robert D.
Last position:
Software Architect at FinTech / Wealth Management
- Analysis of existing microservice structures and integration into the event-driven architecture
- Design and implementation of prototypes
- Introduction of structured workflows and integration into a solid testing strategy
- Team: Small specialized team (3-5 people) from analysis through implementation readiness
- Documentation of architectural decisions and definition of interfaces
- Integration of the event-driven pipeline into the existing landscape
- Technologies: Kafka, Docker, Microservices, Event-Driven Architecture, Java, Liquibase
Khalid E.
Last position:
Lead Architect & Developer at kem-consulting
Development of an agent-based governance platform for the automated assurance of EU AI Act compliance and ODA-compliant orchestration of AI services in complex enterprise environments.
Design and implementation of an agent-based "Mission Control" framework (Aletheia Conductor) for autonomous state monitoring and process control.
Development of "Compliance-as-Code" (CaC) solutions based on OPA/Rego for system-wide enforcement of regulatory guardrails.
Integration of TM Forum ODA standards (TMF630, TMF622, TMF642) to ensure interoperability and standardization.
Building a highly available event-driven architecture using Redpanda and CloudEvents v1.0 for near-real-time event processing.
Implementation of an audit-proof "Evidence Chain" through cryptographic linking of trace logs in preparation for automated audits.
Tech Stack: Java 21 (Quarkus Native), TypeScript (Next.js), Redpanda (Kafka API), CloudEvents v1.0, OPA (Open Policy Agent) & Rego, TimescaleDB, ZincSearch, Redis, TM Forum ODA, Git, GitHub, Clean Code Development, Like-C4.
Sabahattin K.
Last position:
Sole responsibility (design, development, infrastructure, operations) at Own project busik.ch
- Ride-sharing and bus platform, live and fully functional. Backend with Spring Boot 4.1 on Java 21, PostgreSQL with Flyway, and Testcontainers integration tests. Hosted in my own AWS account (ECS Fargate, ALB, ECR, IAM Least-Privilege) with CI/CD via GitHub Actions and OIDC federation without static credentials. Development fully AI-supported with Claude Code, including custom skills and project-specific memory. Spring Boot · Java 21 · PostgreSQL · Flyway · Docker · AWS ECS/ALB/ECR · CI/CD · GitHub Actions · Claude Code
Osman T.
Last position:
Senior Architect, DevOps Engineer at genPsoft GmbH
IT consulting, analysis, architecture design, new and further development, code review, test automation, continuous integration, continuous delivery in backend and frontend areas for Automotive Project Instavalo.
Frontend:
- Implementation of UI components according to specifications, especially style guides and responsive design eith React and Typescript
- Component testing
- Code documentation
- CI/CD with Gitlab Pipeline
Backend / IoT:
- Analysis and architectural design with AWS Greengrass IoT on Edge Devices
- Setting up Microservices containers with Docker Compose on Edge device with AWS Greengrass and AWS IoT IAM, Token Exchange Service, Ansible
- CI/CD with Gitlab Pipeline, Terraform, AWS ECR
- Logging with Fluentbit Lua Language for AWS Cloudwatch
- Python Lambda for AWS Greengrass Recipe deployment on Edge Devices
- Implementation of test-driven development with JUnit, Mockito, and code Coverage
- Jacoco
- Definition of REST interfaces with OpenAPI / Swagger
- Development and enhancement of software based on Java Quarkus, Typescript NestJs NodeJs and Python
- Authentication and authorization in Aws IAM
- Development of REST and gRPC interfaces for the frontend and backend
- Implementation of Maven dependencies with DevSecOps OWASP
- Spring AI, Jetbrains AI Assistant, Junie, Github Copilot, Claude Code, Agents, Skills, Command, Hooks, Subagents
Markus B.
Last position:
Developer / DevOps, Consulting at A state authority in Baden-Württemberg / FSAS Technologies GmbH
Oracle Project Management and Automation
As part of the project, the operation of an Oracle infrastructure was automated by developing and enhancing Puppet modules and migrating existing Bash scripts to a standardized configuration management solution.
The aim of the project was to standardize and automate administrative processes, improve the maintainability of the Oracle platform, and increase the efficiency and traceability of infrastructure management through the use of Infrastructure as Code.
- Analysis and migration of existing Bash shell scripts to a Puppet-based automation solution
- Development and enhancement of Puppet modules for Oracle environments
- Automation of installation, configuration and operational processes using Infrastructure as Code
- Standardization and optimization of configuration management for Oracle systems
- Creation and maintenance of technical and operational documentation
- Planning, coordination and professional support during project implementation
- Operation and automation of Oracle systems on x86-based Linux server platforms
- Testing and quality assurance of the developed Puppet modules
- Analysis and resolution of technical errors as part of the automation and migration
- Close coordination with specialist departments and infrastructure teams to implement automation requirements
Technologies used: Puppet 7/8, SLES 15, Oracle 19, Oracle Grid, SVN, Windows Server, Confluence, VS Code, Ruby, Bash, Pass
Tamás E.
Last position:
Senior Software Developer / Tech Lead at NDA (defense / OSINT)
- Designing the audit logging framework
- Implementing APIs for developers to integrate in their codebase
- Implementing ingestion pipeline, database query layer and UI for browsing the audit events
- Improving stability and reliability of the backend system
Alexander Z.
Last position:
Fullstack Developer and DevOps Engineer at Freelancer
- Developing the infrastructure and improving existing infrastructure: Jenkins, Gitlab Pipeline, OpenShift, Docker, Helm Chart, Kubernetes, Artifactory, CodePipeline, CodeArtifact, Python
- Documenting solutions in Jira/Confluence
- Supporting other colleagues in different technical areas
Andreas B.
Last position:
Senior Software Developer at ELIONOVA AG
- Created an application to control measurement hardware with a Tauri application using React.JS and TypeScript on Raspberry Pi
- Developed a cloud application for storing and analyzing measurement results using Spring Boot and React.JS
- Built a Tauri application for printing ZPL labels on Windows
- Technologies: Java, JavaScript, Tauri, Rust, React.JS, AWS, Kubernetes, Docker, GitLab CI/CD, REST API (JSON), Maven, CI/CD, PostgreSQL
Rainer L.
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
Assessment of the current state
Evaluation of Redgate Flyway functionalities
Concept development
Products: Redgate Flyway, GitHub, Quest, Erwin Data Modeller, Oracle, Atlassian Jira, Atlassian Confluence
Knowledge: Docker, Continuous Delivery, Continuous Integration, Redgate Flyway, Major Releases, Minor Releases
Kyu-Wang L.
Last position:
Software Architect & Lead Software Engineer at Landesamt für Steuern Niedersachsen
The goal of BIENE is to provide a unified tax collection program for all federal states.
Tax collection involves collecting the taxes that have been assessed. This includes, for example, taking due dates into account, recording incoming and outgoing payments, and initiating reminders or refunds. Limitation periods and payment reminders are also important. BIENE handles all payment transactions with banks and accounting.
Set up the architecture and coordinated the provision of development and test environments at the Hannover site
Installed and configured the environments on Linux servers (Apache Kafka, PostgreSQL)
Interface coordination: coordinated and aligned the connection of software products from other departments and their test data
Migrated the application server, JDK, and Maven project structure
Coordinated environments and managed builds
Implemented external interfaces
Delivered business requirements
Designed and implemented RESTful APIs and OpenAPI specifications
Designed and implemented a microservice architecture
Set up and maintained CI/CD pipelines
Deployed applications on OpenShift
Created technical documentation and diagrams
Worked with SQL databases (Oracle and PostgreSQL)
Set up authentication and authorization for the application and users
Containerized the application (automated deployment through the CI/CD pipeline)
Felix S.
Last position:
Systems Consultant / Consultant at Freelance work
- Projects in the areas of identity and access management, single sign-on and LDAP directories
- Development of Java modules
- Development and administration of Java/J2EE-based applications on various application servers
- Administration of Unix systems (Linux, Solaris, AIX) and applications
- Migration of systems
Jorge E.
Last position:
Bittrich & Bittrich
- Extension and maintenance of the Doktree tax advisory document management tool
- Alfresco and Angular development
- Linux system maintenance
Christian T.
Last position:
HDI DevOps & Fullstack Engineer at HDI
- Spring Boot Software Engineer
- DevOps Engineer (Kubernetes, Azure DevOps)
Toolstack: Java, Spring Boot, Kubernetes, Helm, GitOps, ArgoCD, Docker, Azure DevOps, CI/CD Pipelines, Git, Postgres
Discover over 15,000 top freelancers
Statistics of experts using Enterprise JavaBeans
Aggregated from the professional profiles of matched freelancers.
Experience
25 years
Position duration
2.6 years
Positions per freelancer
14
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Banking and Finance, Government and Administration
Certification focus areas
Information Technology, Product Development, Project Management
Bachelor's degree or higher
98%
Master's degree or higher
68%
Doctorate
9%
Certifications per freelancer
2
Most common languages
German, English, French
Speak two or more languages
93%
Based on our profile pool as of 29 Oct 2026.
Daily rate distribution
The chart shows how the daily rates of experts in this technology in Germany are distributed, based on recent contracts on our platform. Each bar covers a rate range — its height shows the share of experts charging within that range.
Average rates of experts in Germany 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 29 Oct 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
Enterprise JavaBeans experts industry focus
See which industries our matched freelancers work in most often — every figure is calculated live from the freelancers on FRATCH.
- Information Technology (99%)
- Banking and Finance (66%)
- Government and Administration (49%)
- Automotive (46%)
- Telecommunication (43%)
- Insurance (41%)
- Retail (41%)
- Transportation (35%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Enterprise JavaBeans in practice
Enterprise JavaBeans, commonly called EJB, is a server-side component model for reliable business logic in enterprise Java applications. It provides managed transactions, security, concurrency and lifecycle handling through an application server. Companies use it for transactional services, integration layers and core systems where consistency and operational control matter.
Applications and systems
EJB appears in banking, insurance, manufacturing, logistics, public services and other environments with complex business rules. It supports modular backends, service layers and integration with databases, messaging systems and external applications. Common assignments include:
- Extending legacy EJB business services
- Migrating Java EE applications toward Jakarta EE
- Connecting services through JMS and REST interfaces
- Stabilizing transaction-heavy enterprise systems
Ecosystem and tooling
Strong EJB specialists work across the surrounding Java enterprise stack. Relevant knowledge includes JPA and Hibernate for persistence, JMS for asynchronous messaging, CDI for dependency injection, JAX-RS for REST APIs and application servers such as WildFly, Payara, GlassFish, WebLogic and WebSphere. Maven, Gradle, Git, automated testing and container deployment are also common parts of the delivery environment.
When companies need specialists
Freelance expertise helps when an internal team must understand a mature codebase, handle a migration or deliver a critical integration without disrupting operations. It is especially useful when documentation is incomplete, application-server configuration is complex or business transactions cross several systems. In Germany, specialists may support remote delivery or work on site where regulated operations and close stakeholder collaboration require it.
What strong professionals deliver
A capable EJB professional separates business logic from infrastructure concerns and makes transaction boundaries explicit. They understand stateful and stateless session beans, message-driven beans, security contexts, pooling and failure handling. They can trace production issues across code, database, messaging and server configuration, then document decisions clearly for the permanent team.
Selecting the right expertise
Look for evidence of comparable enterprise systems rather than familiarity with EJB terminology alone. Discuss the application server, Java EE or Jakarta EE version, persistence approach, messaging model, deployment process and migration constraints before work begins. Clear tests, repeatable builds, observable transactions and a practical modernization plan are strong signs of quality.
Frequently asked questions
Before you brief your next project: the most common questions about Enterprise JavaBeans.
Enterprise JavaBeans is used to implement server-side business services that need managed transactions, security, concurrency and reliable lifecycle handling. EJB is common in large Java applications that connect databases, message brokers and external systems.
Enterprise JavaBeans is part of the Java EE and Jakarta EE enterprise standards and normally runs inside an application server. Spring offers a broader application framework with a different configuration and deployment model, so the better choice depends on the existing system, operational requirements and migration goals.
A strong EJB specialist usually understands JPA or Hibernate, JMS, CDI, JAX-RS, relational databases and application-server administration. Experience with Maven or Gradle, automated testing, REST integration, observability and container deployment is also valuable.
The required depth depends on the system’s criticality, age and integration complexity. For a legacy migration or transaction-heavy core system, choose a professional who can demonstrate hands-on work with the relevant application server, persistence model, messaging flows and production troubleshooting.
Enterprise JavaBeans projects can often be delivered remotely when repositories, test environments and deployment access are available. On-site collaboration may still help with regulated systems, restricted infrastructure or workshops involving several German-speaking business and technology stakeholders.
EJB modernization makes sense when the application server is difficult to maintain, releases are slow, infrastructure costs are rising or the system must move toward Jakarta EE, containers or lighter services. A careful assessment should protect transaction behavior, security controls and integrations before changing the architecture.
A reliable Enterprise JavaBeans professional makes transaction boundaries, error handling and security behavior easy to inspect. Review the test coverage, deployment documentation, logging, monitoring and code structure, and ask how the solution behaves when a database or messaging dependency fails.
Before starting an EJB engagement, clarify the Java EE or Jakarta EE level, application server, build pipeline, database, messaging provider and release process. Also confirm access restrictions, remote or on-site expectations, language needs and whether the assignment focuses on maintenance, migration or new services.
The average hourly rate of freelancers in Germany who have used Enterprise JavaBeans in their recent projects is 90 €, which corresponds to a daily rate of about 723 € based on an 8-hour working day.
Of the freelancers in Germany who have used Enterprise JavaBeans in their recent projects, 98% hold at least a Bachelor's degree, 68% hold at least a Master's degree, and 9% hold a doctorate.
On average, freelancers in Germany who have used Enterprise JavaBeans in their recent projects have 25 years of professional experience, with a single engagement typically lasting around 2.6 years.
The most common languages among freelancers in Germany who have used Enterprise JavaBeans in their recent projects are German (99%), English (94%), and French (18%).
The most common industries among freelancers in Germany who have used Enterprise JavaBeans in their recent projects are Information Technology (99%), Banking and Finance (66%), and Government and Administration (49%).
The most common business areas among freelancers in Germany who have used Enterprise JavaBeans in their recent projects are Information Technology (100%), Product Development (96%), and Quality Assurance (60%).
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.
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