JBuilder Experts in Germany
matched in minutes from over 15,000 CVs with the power of AIWork with specialists who maintain legacy Borland JBuilder codebases, modernize Enterprise JavaBeans architectures, and execute clean migrations to modern IDEs with vetted, available freelancers.
Meet FRATCH Experts in Germany, who have recently used JBuilder
Hans-Dieter G.
Last position:
Training as an AI Expert
I continuously expand my expertise in AI and automation. I work with ChatGPT, OpenAI, Manus, Gemini, MS CoPilot, APIs, LangChain, Hugging Face, Manus, TensorFlow, and Auto-GPT, as well as Python-based ML frameworks and MLOps tools, to intelligently transform traditional software development, analysis, and testing processes.
Ola V.
Last position:
IT Lecturer
- IT training in theory and practice for IT specialists in application development and system integration
Bernd H.
Last position:
Deutsche Bahn
- Migration of the platform to X systems
- Analysis of changes related to TCP/IP communication
- Handling error tickets
- Installation and configuration of Xypro Security 1 attack detection
- Setting up an SNMP.v3 connection to send alert traps to Netcool (Tivoli)
- Installation and configuration of the RemoteAnalyst software
- Migration of master data and timetable data
- Setting up and monitoring MQ pipelines to external partners
Stefan M.
Last position:
Bundesrechtsanwaltskammer
- Design, planning and execution of complex acceptance tests for a document exchange platform for the German justice authorities.
- Validation of decrypted and certificate-based message exchange via web platform, mobile app, and Java API.
- Documentation of test cases, execution steps, and test results.
- Technologies: Windows 11/10, Ubuntu, iOS, Android, Bash for Windows, Java 17, IntelliJ, Git, Jira, Confluence, Citrix Server, xJustiz standard implementation, specific justice software.
Werner K.
Last position:
Test Coordinator, Designer and Engineer at IBM
- Testing the SekIDP and related components
- Test design, execution and automation, microservices, GitHub Enterprise, Eclipse, Katalon Test Platform, API Testing, Confluence 8, JIRA/Xray, Draw.io, Swagger/OpenAPI, Postman, Docker, Kubernetes, Podman, PuTTY, E-Health, Telematik, Gematik standards, EPA, E-Rezept, sektoraler IDP, encryption, XaDES, PaDES, DICOM, HL7, FHIR, IHE, ICD, SSO, SAML/Shibboleth, OAuth, smartcards, JWT, two factor authentication Android and iOS, Wireshark, BrowserStack, Cypress, gRPC, REST, SOAP, WS-Security, Linux Shell, PowerShell, SSH/SSL, Java, Kotlin, Cordova, Gradle, Groovy, Python, TypeScript
Olaf T.
Last position:
BI Architect in Kanban Team at Gulp / Randstad for HHLA
- Creation of automated tests.
- Extension of the functionality of the enterprise BI data warehouse.
- Design and development in SQL and PL/SQL.
- Data modeling as well as performance measurement and tuning.
- Creation of and contribution to user stories and concepts.
- Technical environment: Windows, Linux.
- Database: Oracle 19c incl. DWH, CDB, PDB.
- Tools: Confluence, CVS, Eclipse, Git, GitLab, Jira, N4, PL/SQL, SQL Developer, utPLSQL.
Karsten K.
Last position:
IT Consultant at Freelance IT Consultant
EvoBus / Daimler Buses (Spare parts)
- Support existing pricing platform
- Further development of existing pricing platform
- Refactoring the central pricing logic
Motorservice International (MSI) (Spare parts)
- Support existing pricing platform
- Further development of existing pricing platform
MAHLE (Spare parts)
- Further development of existing pricing platform
MANN & HUMMEL (Spare parts)
- Support existing pricing platform
HELLWEG Building & Garden Centers (Full assortment) Central pricing setup
- Analysis and documentation of pricing rules
- Setup of pricing for stores & online
- Software architect
- Lead developer of pricing logic (Groovy)
- Support pricing platform
- Further development of pricing platform
PORSCHE AG (Spare parts & accessories) Pricing setup for headquarters and subsidiaries
- Analysis and documentation
- Setup of pricing for headquarters and stores
- Software architect
- Lead developer of pricing logic (Groovy)
- Support pricing platform
- Further development of pricing platform
Achille C.
Last position:
Backend/Frontend Developer at ITZ-Bund
Development of a microservice application for calculating postings on accounts
Development of backend components with Java or JEE, Quarkus, Kafka, Rest API
Development of the test component with mocking frameworks (Mockito)
Development of integration test components
Creation of OpenAPI specification format
Configuration of CI/CD pipeline
Development of frontend components with React
Design, further development and optimization of system structures
Code review
Java Corretto 21, JEE, Quarkus, Golang
Reactive programming with Spring WebFlux, Project Reactor
Git, Azure DevOps for CI/CD pipeline, YAML, Json Swagger UI, Postman, Rest OpenAPI, Kafka Streams, Kafka Connect, Log4J
Microservices, Jira, Confluence, MySQL, Docker, Kubernetes (deployment via Helm charts)
Spring Security, OAuth 2, JWT, Sonarqube
IntelliJ, Maven, logging framework Splunk, Agile method Scrum, Nexus, Vaadin V24, build tool Vite
React, React.JS, Node.js, Jess/JavaScript, Tailwind CSS, Agile method Scrum, accessibility BITV, Playwright
Ioan D.
Last position:
Senior Software Developer at ING
- Tribe Home, Product Area 4 - Customer in Life, Squad Cybertron.
- Analysis, design, development, and testing of new requirements for Optimmo, construction financing software.
- Analysis, design, development, and testing of the JEE application MWS kredit-baufi.
- Analysis, design, development, and testing of the Wicket Optimmo application.
- Analysis, design, development, and testing of kredit-baufi batch programs.
- Migration of kredit-baufi batches to RHEL9.
- CiL SCS Consumer Pacts with Finagle.
- CiL ScS Touch Point Architecture Integration.
- Team size: 10.
- Tools / Frameworks: OpenJDK Java 17, Kotlin 1.6.0, Azure, Jenkins, Stash, JEE, Gitlab, JIRA, Confluence, git, Spring 6.0, Sping Cloud, Spring Data, Hibernate, JPA, JMS, Kafka, Oracle, PL/SQL, Red Hat Enterprise Linux (RHEL), Maven, REST, JBoss, Intellij IDEA, Wicket 9 and 10, Istio.
Stephan H.
Last position:
Software development, software quality assurance, tester, test automation engineer at IT services
Refactoring the CRM system of an IT service provider This includes a complete refactoring of the legacy application, in particular the migration from JDK 1.6 to JDK 25 and the replacement of self-developed infrastructure components, such as the Object-Relational Mapper (ORM) and the frontend template engine, with current standard components based on Spring Boot. At the same time, the previous close coupling between the back end and front end is being removed and the application is being migrated to a modern microservice architecture. The microservices are implemented as independent, reusable units and operated in autonomous Docker containers. The backend components are provided through REST APIs. As part of the project, CI/CD and deployment processes for the container-based microservice architecture were also established and automated using GitLab CI. At the same time, quality assurance is ensured through the implementation and automation of unit, integration and system tests. The work is supported by AI, particularly through the use of GitHub Copilot and LM Studio (gpt-oss) for code development and prompt engineering. Position: Software development, software quality assurance, tester, test automation engineer
Work performed:
- Analysis of the functional and technical use cases (workflows, involved processes/systems, communication paths, security requirements)
- Code refactoring (code cleanup, optimization)
- Dependency refactoring
- Refactoring of REST services (SpringBoot)
- Refactoring of the ORM layer
- Test execution / test automation (Serenity, Selenium, Playwright, JUnit)
- Establishment and automation of CI/CD pipelines for build, test and deployment steps in a Docker/microservice environment Team size: 2 people IT basis: Technologies: Java (JDK 25), Spring Boot, Hibernate, JPA, SQLServer, MariaDB, Docker, Yaml, Markdown, JSON, HTML/CSS, REST Tools: IntelliJ, DBeaver, Git/GitLab, GitHubCopilot (AI) Work management: Gitlab Tests: Serenity, Selenium, Playwright, JUnit Platform: Linux, Windows Version control: Gitlab Build management: Gitlab CI
Rahul J.
Last position:
Hybris Consultant at Bosch Digital
- Implement Hybris Commerce projects for customer.
- Provide technical implementation of Developer and Integrator portal using Hybris solution.
- Integration with Billing and Payment systems.
- Technical ownership of the solution.
- Introduce best practices in Hybris solution and Java technologies.
- Provide release support on AWS environments.
- Technical focal point for sales and engineering teams.
- Supporting engineering team to scope the requirements and in architecting & designing the solutions.
- Proliferate best practices from one project to others, Knowledge management.
Vladimir M.
Last position:
Developer at Financial services provider
- Support and further development of a framework for developing applications in a banking association: DynS/OSPE
- Migration of the framework to Java 11 and Java 17
- Java8, Java11 and Java17, Spring, Spring-Batch, Spring WebServices, Spring-Security, Spring-Data, JPA, Hibernate, OpenSource libraries etc.
- XML, JAXB, JSON, REST and SOAP services, DB2, Oracle, WebSphere or Liberty AS, FreeMaker, Junit, mock libraries, JaCoCo, Maven, IntelliJ, Eclipse, GitHub, SVN, Jira
Gerhard H.
Last position:
Application Developer at Lila Logistik
- Supported the application
- Developed applications in COBOL
- Extended customer and in-house requirements
- Assisted in ensuring smooth operation
- Methods/tools: COBOL, HP3000, MPE/XL operating system, IMAGE database, Whisper (development interface)
Reinhard D.
Last position:
Continuing Education Data Analytics, Artificial Intelligence, Deep Learning, Machine Learning at Continuing Education
- Continuing education in Data Analytics, Artificial Intelligence, Deep Learning and Machine Learning
- Operating system: Windows
- Development environments: JetBrains PyCharm, Jupyter Notebook, Spyder
- Programming languages: Python 3.10
- Other technologies: Anaconda, Keras 2.10, NumPy, OpenCV, Pandas, Scikit-learn, Seaborn, TensorFlow 2.10, PyTorch
Matti L.
Last position:
FullStack Developer at Ing DiBa GmbH
- Developed and extended Fiori UI5/WebApps for areas such as general ledger, asset accounting, and others.
- Implemented backend logic and OData services for a new S/4 HANA system
- Analyzed the current state of SAP GUI transactions and derived suitable standard and custom developments
- Designed technical concepts and implemented custom UI5 apps in the Fiori Launchpad
- Automated OPA tests, extended and adapted standard Fiori apps
- Documented and created developer manuals in the wiki
- Conducted code reviews, approved and delivered software units via GitLab and SAP transports
Discover over 15,000 top freelancers
Statistics of experts using JBuilder
Aggregated from the professional profiles of matched freelancers.
Experience
28 years
Position duration
2.5 years
Positions per freelancer
24
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Banking and Finance, Automotive
Certification focus areas
Information Technology, Quality Assurance, Product Development
Bachelor's degree or higher
59%
Master's degree or higher
53%
Doctorate
12%
Certifications per freelancer
2
Most common languages
German, English, French
Speak two or more languages
96%
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 JBuilder
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.
JBuilder 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 (100%)
- Banking and Finance (70%)
- Automotive (61%)
- Insurance (57%)
- Retail (57%)
- Transportation (52%)
- Telecommunication (52%)
- Healthcare (48%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Borland JBuilder in Enterprise Computing
Borland JBuilder was once the gold standard integrated development environment for enterprise Java. Many organizations in Germany still run mission-critical legacy applications initially built and maintained within Borland or Embarcadero JBuilder environments. Today, specialists are engaged primarily to stabilize, maintain, or migrate these extensive codebases.
Core Workflows and Legacy Architecture
JBuilder excels in handling early enterprise specifications and rapid application development through visual design tools. Key components managed within these environments include:
- Java 2 Platform Enterprise Edition components
- Enterprise JavaBeans session and entity beans
- Visual component libraries and Swing user interfaces
- Proprietary deployment descriptors and server bindings
Migration to Modern Toolchains
Most current projects center on detangling software from proprietary JBuilder project metadata and build scripts. Professionals extract business logic into standard build tools such as Maven or Gradle. They replace outdated visual design bindings with clean Java code and transition workflows to contemporary environments like Eclipse or IntelliJ IDEA.
Ecosystem and Server Integration
JBuilder offered tight integration with classic enterprise application servers. Specialists working with this IDE possess deep familiarity with legacy versions of BEA WebLogic, IBM WebSphere, Borland Enterprise Server, and Apache Tomcat. They resolve runtime discrepancies when targeting modern Java Virtual Machines while preserving core business logic.
Industrial Relevance Across Germany
In Germany, long-lifecycle industries such as manufacturing, logistics, banking, and public administration continue to depend on systems designed during the JBuilder era. External specialists provide the rare knowledge required to audit these stable codebases, perform security patching, and execute careful modernization roadmaps without disrupting daily enterprise operations.
Hallmarks of Experienced Professionals
Proficient specialists understand both early enterprise specifications and contemporary software architecture. They diagnose complex classpath issues, refactor legacy patterns, and manage Ant build configurations cleanly. Their work ensures historical enterprise software remains dependable, audit-compliant, and ready for future cloud transformation.
Frequently asked questions
Questions about JBuilder? Start with the answers below.
Today, JBuilder is almost exclusively encountered in legacy software maintenance, modernization, and migration projects. Organizations rely on specialists to untangle proprietary IDE dependencies, compile legacy business logic against newer runtime environments, and transition source code into modern build tools.
While modern IDEs rely on open build systems like Maven or Gradle, Borland JBuilder used proprietary project files and specialized visual designers. Contemporary tools offer superior refactoring, language support, and container integration, making the migration away from JBuilder a top priority for engineering teams.
A strong JBuilder professional combines deep knowledge of early Java EE specifications, Enterprise JavaBeans, and Apache Ant with modern software practices. They must be skilled in porting legacy UI designs to contemporary frameworks and migrating proprietary builds into standard toolchains.
Most applications constructed in Embarcadero JBuilder or earlier Borland versions depend on outdated Java versions. Running them on current releases requires upgrading deprecated APIs, replacing proprietary libraries, and addressing significant classloader changes introduced in newer runtime environments.
Many established German industrial, financial, and logistical firms operate core back-office systems built during the late 1990s and 2000s. These JBuilder applications are often exceptionally reliable and carry intricate domain logic, so companies prefer carefully planned refactoring over risky rewrites.
Remote collaboration is standard for JBuilder code audits, build script migrations, and core refactoring. However, projects in Germany involving air-gapped on-premises servers or strict compliance rules in banking and public administration may occasionally require on-site presence.
Look for a proven track record in legacy software modernization rather than basic application maintenance. An exceptional JBuilder specialist demonstrates the ability to dismantle legacy project structures, decouple proprietary libraries, and deliver fully reproducible, automated builds without business interruption.
While technical documentation and codebases are in English, many historical specifications and internal process documents across German mid-market enterprises are written in German. A Borland JBuilder specialist who communicates effectively in both languages offers a distinct advantage during legacy reviews.
The average hourly rate of freelancers in Germany who have used JBuilder in their recent projects is 91 €, which corresponds to a daily rate of about 729 € based on an 8-hour working day.
Of the freelancers in Germany who have used JBuilder in their recent projects, 59% hold at least a Bachelor's degree, 53% hold at least a Master's degree, and 12% hold a doctorate.
On average, freelancers in Germany who have used JBuilder in their recent projects have 28 years of professional experience, with a single engagement typically lasting around 2.5 years.
The most common languages among freelancers in Germany who have used JBuilder in their recent projects are German (100%), English (96%), and French (17%).
The most common industries among freelancers in Germany who have used JBuilder in their recent projects are Information Technology (100%), Banking and Finance (70%), and Automotive (61%).
The most common business areas among freelancers in Germany who have used JBuilder in their recent projects are Information Technology (100%), Product Development (87%), and Quality Assurance (87%).
Main locations of FRATCH Experts, who have recently used JBuilder
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 Request a free demo
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Philipp Thomaschewski
FRATCH CEO
