WildFly Experts in Cologne
in minutes from over 15,000 CVs with vetted specialists and the power of AI.Hire experts who can keep WildFly application servers stable, tune Java EE and Jakarta EE deployments, and handle cluster setups, security, and migration work. Get fast, precise matching with vetted, available freelancers.
Meet FRATCH Experts in Cologne, who have recently used WildFly
Hooman Behmanesh
Last position:
Fullstack Developer at Möbel Roller GmbH
- Further development of the existing e-commerce platform based on SAP Commerce (Hybris) to meet the growing demands of digital commerce.
- Ensuring the scalability and performance of the backend, so the platform remained stable and efficient even under heavy user load.
- Development and integration of new OCC REST APIs and services for modular extensions and flexible adjustments, to implement new features quickly.
- Optimization of data flows and interfaces, which significantly improved platform efficiency and system performance.
- Ensuring a maintainable and scalable code base by using Clean Code principles, proven design patterns, and a future-proof architecture.
- Reduction of errors through extensive testing with JUnit, Mockito, and load tests with Gatling, supported by the introduction of automated test processes.
- Improved system performance through targeted refactoring measures and efficient database queries, especially to handle peak loads.
- Use of modern cloud and monitoring tools such as Kubernetes, Google Cloud Platform (GCP), and Grafana to ensure a stable and monitored infrastructure.
- Clear improvement in efficiency, scalability, and reliability of the platform, which now meets the demands of a dynamic and growing e-commerce market.
Burhan Dinler
Last position:
Enterprise Architect & Solution Architect at DB Netz AG
With project PRIZMA, DB will modernize its infrastructure on the one hand, and develop a fail-safe IT landscape on the other hand, which can be restored quickly and securely in case of a disaster.
- Capture current architectures of existing systems as well as methodical consulting and development of target architectures
- Deepen and maintain the building plan / target IT landscape
- Implement technical architecture concepts & architecture descriptions
- Implement migration concepts for updating and further developing the platform and information systems
- Assess submitted improvement suggestions as part of the project
- Capability management: identify capability gaps, develop target visions, and support transformation planning within the enterprise architecture.
- Create a compatibility matrix of the components in use and compare dependencies of specific versions
- Create an IT concept for extending the platform with the following topics: hardware and software requirements, security, licensing, high availability, load balancing, backup & recovery, update strategy, monitoring integration, etc.
- Coordinate with business architects as well as technical architects from the cross-functional architecture area of the PRISMA program for the topics (backup, Active Directory, monitoring, Citrix, and business applications ...)
- Status meetings and alignment of project planning with the Release Train Engineer / Project Manager
- Advise the Release Train Engineer / Project Manager in identifying project risks
- Advise the System Architect Engineers in steering the implementation of the concept
- Implement the IT concept
- Document the infrastructure
Label: MS Project, LINUX, Windows, ORACLE, Java, REST, SharePoint, Microsoft Exchange, UML, Enterprise Architect, BPMN, AZURE, AWS, V-MODEL, Micro Service, VisualStudio, SAP S/4HANA, SCRUM(SAFE), ESB (TIBCO), Python, Innovator, LeanIX (TOGAF), Ansible, Ansible Tower, Ansible Automation, ROBOT, SpringBoot
Marc Smyk
Last position:
Fullstack Developer at PLANT-MY-TREE
PLANT-MY-TREE®-per-order
The application enables Shopify merchants to automatically place tree-planting orders for every incoming order. By integrating ecological contributions directly into the purchase process, the manual effort for tracking and billing reforestation initiatives is eliminated. The system increases transparency for end customers through real-time visualizations of the ecological impact directly in the storefront. The architecture is based on a modular monolith with Spring Boot in the backend and an integrated React app inside the Shopify admin area. The solution uses webhooks to capture order data in an event-driven way and integrates the weclapp ERP system for automated monthly invoicing. An app proxy mechanism provides dynamic statistics such as CO2 compensation and planted trees without any performance loss for the merchant shop.
Tasks:
- Design of the modular software architecture based on Spring Modulith to ensure high maintainability
- Development of the event-driven business logic for evaluating Shopify orders via webhooks
- Implementation of automated invoicing by connecting the weclapp REST API
- Building the frontend using React Router and Shopify App Bridge for native integration
- Design of the database model and implementation of the persistence layer with JPA/Hibernate and Prisma
- Integration of internationalization processes for global use in the frontend and email communication
- Automation of deployment processes using Docker and GitLab CI/CD
Project skills: Java 25, Spring Boot, Spring Security, Spring Modulith, Hibernate, JPA, REST API, PostgreSQL, Maven, Liquibase, React, TypeScript, React Router, Vite, Node.js, Prisma, Zod, Docker, Docker Compose, GitLab CI/CD, Shopify CLI, Shopify App Bridge, Polaris, weclapp, i18next, Lombok, Vitest
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.
Andreas Ernst
Last position:
Consultant at Iteratec GmbH
Pierre Gronau
Last position:
Ansible Automation, Windows Third Level Support at DB InfraGO AG
- PRISMA project
- Ansible automation
- Windows third level support for Windows NT, Windows 2000, Windows 2013, Windows 2016, Windows 2019
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 WildFly
Aggregated from the professional profiles of matched freelancers.
Experience
26 years (Germany: 24 years)
Position duration
1.8 years (Germany: 2 years)
Positions per freelancer
30 (Germany: 17)
Top business areas
Information Technology, Product Development, Logistics
Top industries
Information Technology, Transportation, Retail
Bachelor's degree or higher
100% (Germany: 89%)
Master's degree or higher
67% (Germany: 50%)
Certifications per freelancer
2
Most common languages
German, English, Arabic
Speak two or more languages
100% (Germany: 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 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 WildFly
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
WildFly in practice
WildFly is a Java application server for running enterprise back ends. Teams use it to host Jakarta EE services, expose APIs, and run transactional systems with clear deployment rules. It is the name many people still use for JBoss Application Server in its later form.
Typical work
- Deploy and maintain Java web applications
- Configure datasources, JMS, clustering, and security
- Support migration from older JBoss AS setups
- Tune server settings for performance and stability
WildFly fits projects that need controlled runtime behavior, not just a simple servlet container.
Ecosystem and tooling
Strong specialists know the surrounding stack, not only the server itself. That includes Jakarta EE, CDI, JPA, EJB, Maven or Gradle, and the application logs and scripts used in daily operations.
They also work with domain-specific add-ons, integration queues, and build pipelines. In Cologne, this often matters for companies that want enterprise Java support without expanding their permanent team.
When companies bring in help
Freelance expertise is useful when a server is hard to start, a deployment breaks after a library change, or a legacy setup needs cleaning up. It also helps when a team must move from older JBoss AS installations, separate environments, or mixed WildFly versions.
- Upgrade and migration projects
- Production incidents and troubleshooting
- New environment setup and hardening
- Performance reviews and deployment fixes
What strong professionals deliver
Good WildFly specialists read server logs quickly, understand module loading, and know how to isolate application problems from infrastructure issues. They can explain why a deployment fails, which setting caused it, and how to prevent the same issue later.
They also document changes clearly so operations teams can keep the system stable after handover.
Why the fit matters
WildFly projects often touch authentication, message handling, database access, and release processes at the same time. A weak setup can look fine in development and fail under load or during restart.
The right specialist keeps the server predictable, makes changes safely, and helps teams deliver enterprise Java systems with less risk.
Frequently asked questions
Before you brief your next project: the most common questions about WildFly.
WildFly is used to run enterprise Java back ends, APIs, and transactional business applications. It is a fit when teams need a managed server runtime with Jakarta EE features such as security, persistence, and messaging.
WildFly is the newer name that followed JBoss Application Server in Red Hat's Java server line. People still search for JBoss AS, so good specialists should understand both the current product and the older setup patterns.
WildFly is broader than Tomcat because it provides a full Java enterprise runtime, not just servlet support. Compared with Payara, it is often chosen by teams already invested in the JBoss or Red Hat ecosystem and those that need specific WildFly operational habits.
A strong WildFly specialist usually knows Jakarta EE, JPA, CDI, EJB, JMS, Maven, and Linux operations. Experience with databases, reverse proxies, and deployment automation is also important because server issues often cross those boundaries.
WildFly work can start with one focused specialist if the task is clear, such as a deployment fix or a server upgrade. Larger migrations, cluster tuning, or security hardening usually need someone who has handled production systems before and can make careful changes.
Yes, most WildFly support can be done remotely because the key work is configuration, logs, deployments, and controlled testing. On-site time in Cologne is mainly useful for sensitive handovers, infrastructure access, or projects where local teams want close workshop sessions.
Look for someone who can explain server logs, deployment failures, and module problems in plain language. A strong WildFly expert shows a clear method for testing changes, rollback planning, and documenting what was changed in the runtime.
A strong WildFly specialist usually starts with the startup logs, datasource checks, deployment status, and security configuration. That quickly shows whether the issue is in the application, the server, or an external dependency such as the database or message broker.
The average hourly rate of freelancers in Cologne, Germany who have used WildFly in their recent projects is 99 €, which corresponds to a daily rate of about 795 € based on an 8-hour working day.
Of the freelancers in Cologne, Germany who have used WildFly in their recent projects, 100% hold at least a Bachelor's degree and 67% hold at least a Master's degree.
On average, freelancers in Cologne, Germany who have used WildFly in their recent projects have 26 years of professional experience, with a single engagement typically lasting around 1.8 years.
The most common languages among freelancers in Cologne, Germany who have used WildFly in their recent projects are German (100%), English (100%), and Arabic (14%).
The most common industries among freelancers in Cologne, Germany who have used WildFly in their recent projects are Information Technology (100%), Transportation (86%), and Retail (86%).
The most common business areas among freelancers in Cologne, Germany who have used WildFly in their recent projects are Information Technology (100%), Product Development (86%), and Logistics (71%).
Main locations of FRATCH Experts, who have recently used WildFly
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
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
