JBuilder Experts in Germany
in minutes from over 15,000 CVs with the power of AI.Hire experts who keep Borland JBuilder and JBuilder codebases stable, maintain legacy Java desktop and Java EE applications, and support safe migration work. Get fast, precise matching with vetted, available freelancers.
Meet FRATCH Experts in Germany, who have recently used JBuilder
Rahul Joshi
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.
Olaf Taesch
Last position:
BI Architect in a 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.
Ola Van Dunen
Last position:
IT Lecturer
- IT training in theory and practice for IT specialists in application development and system integration
Stephan Heilmann
Last position:
Development, Tester at Telecommunications
Set up an operational contract information system. This is mainly used as an order management system - for migrating existing contracts as well as for creating and providing new contract bundles.
Sales agents can use it to order new services, modify existing ones and migrate service types, as well as provide price information to the customer.
This supports the marketing of new services as well as the replacement of old services for existing customers.
In addition, existing data is imported, processed (ETL) and provided via services for further use in the portal front end.
Analysis of the business and technical use cases (workflows, involved processes/systems, communication paths, security requirements)
Further development / creation of the front-end components (React/JavaScript)
Design and implementation of the business logic
Creation of the functional and technical component documentation
Test execution / test automation (Cypress, test coverage)
Team size: 8 people
Technologies: React, JavaScript, Rest (JSon), Yaml, Markdown, MariaDB (SQL), Docker, Swagger, Cypress
Tools: Webstorm, ReactDeveloperTools, VisualStudioCode, Word, DBeaver, Git/GitLab
Work management: GitLab
Platform: Linux
Build management: GitLab
Stefan Marx
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.
Hans-Dieter Große-Kreul
Last position:
Training as an AI Expert
I continuously expand my expertise in AI and automation, working with ChatGPT, OpenAI, Manus, Gemini, MS CoPilot, API, LangChain, Hugging Face, Manus, TensorFlow and Auto-GPT as well as Python-based ML frameworks and MLOps tools to intelligently transform classic software development, analysis, and testing processes.
Igor Kazarnovskiy
Last position:
Freelance Software Developer
Werner Keil
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
Achille Chimi
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
Karsten Kurvin
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
Vladimir Maznicenko
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 Haunstetter
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 Duy
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
Roman Pintsuk
Last position:
IT manager, specialist and consultant; robotics specialist; business analyst; actuary at Righley Cooper GmbH
- IT manager, specialist and consultant
- Robotics specialist
- Business analyst
- Actuary
Ioan Dobre
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, mortgage 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, Spring 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.
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
61%
Master's degree or higher
50%
Doctorate
11%
Certifications per freelancer
2
Most common languages
German, English, French
Speak two or more languages
96%
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 Germany 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 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 30 Aug 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
About the technology
Legacy Java IDE
JBuilder is a Java IDE once known as Borland JBuilder, later tied to the CodeGear name. It was used to build desktop tools, server-side Java systems, and long-lived enterprise applications. Companies still need specialists when they must keep these systems running or move them forward carefully.
What experts handle
- Maintenance of older JBuilder projects and workspaces
- Debugging Java code built around the JBuilder toolchain
- Support for Swing, EJB, JDBC, and web application code
- Source control, build, and deployment cleanup in legacy setups
- Migration planning from JBuilder to newer Java IDEs
Why companies hire help
Teams bring in freelance experts when the original project knowledge is gone, a release is blocked, or a legacy system must be changed without breaking production. JBuilder often appears in older insurance, manufacturing, public sector, and internal business systems. In Germany, this work is often mixed with older in-house code and strict handover needs.
Ecosystem and tooling
Strong professionals know the Java stack around JBuilder, not just the IDE itself. They are comfortable with Ant, early Java EE patterns, servlet containers, databases, and source repositories used in older enterprise setups. They can read old project layouts, replace brittle scripts, and document what is safe to update.
Signs you need a specialist
- The original JBuilder expert is no longer available
- The code runs, but changes are risky
- Builds or deployments depend on old local settings
- You need a migration path, not a full rewrite
- Documentation is thin and the system is business-critical
What good JBuilder professionals do
A strong specialist works carefully, tests changes in small steps, and understands how legacy Java code behaves in production. They can stabilize the current setup, explain technical debt clearly, and guide a team through modernization without forcing unnecessary rewrites. That is what keeps older JBuilder systems useful while reducing risk.
Frequently asked questions
Questions about JBuilder? Start with the answers below.
JBuilder is mainly used to maintain and extend older Java applications. It shows up in legacy desktop tools, server-side systems, and internal business software that was built years ago and still matters today. Many companies bring in a specialist to keep the code base working while they plan a careful update.
JBuilder is the name most people use now, but many searchers still mean Borland JBuilder or the later CodeGear-branded version. The product line changed hands over time, so different project documents may use different names. A good expert should understand all three references and be able to work across that history.
JBuilder is much older than current tools such as IntelliJ IDEA or Eclipse. It is not usually chosen for new work, but it can still be important for maintaining code written against old project layouts and IDE-specific settings. If the goal is modernization, a specialist can help move the code without breaking it.
A strong JBuilder specialist should know core Java, Ant, JDBC, and common enterprise patterns from older Java systems. Knowledge of Swing, servlets, application servers, and source control helps a lot too. If migration is part of the job, experience with newer IDEs and build tools is useful as well.
A JBuilder expert can usually start with limited context if the source code and build files are available. They still need access to the project history, run instructions, and any deployment details that live only in team memory. The more fragile the system, the more important a short handover becomes.
Yes, most JBuilder work can be done remotely if the code base, environments, and access rights are set up well. In Germany, some companies still prefer on-site support for sensitive systems or for a first handover with internal teams. Remote collaboration works best when the specialist can inspect builds, logs, and older configuration files directly.
Look for proof that the JBuilder expert has worked on legacy Java systems, not just general Java projects. Good signs are careful debugging, clear notes, and a plan that protects the current system while improving it step by step. Ask how they would handle old project files, missing documentation, and migration risk.
Companies usually need JBuilder help when a release is blocked, the old maintainer is gone, or the application must be changed without a rewrite. It is also common when a team has to document a legacy system before handing it over. In those cases, a specialist can save time by reading the old setup quickly and making it understandable again.
The average hourly rate of freelancers in Germany who have used JBuilder in their recent projects is 90 €, which corresponds to a daily rate of about 724 € based on an 8-hour working day.
Of the freelancers in Germany who have used JBuilder in their recent projects, 61% hold at least a Bachelor's degree, 50% hold at least a Master's degree, and 11% 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 (71%), and Automotive (58%).
The most common business areas among freelancers in Germany who have used JBuilder in their recent projects are Information Technology (100%), Product Development (88%), and Quality Assurance (88%).
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
Get in touch with the FRATCH team and we will get back to you within 4 hours.
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We always have the time for a call or email!
Philipp Thomaschewski
FRATCH CEO
