WildFly Experts in Cologne
in minutes from over 15,000 CVs with the power of AIHire experts who build and maintain WildFly-based Java applications, tune Jakarta EE deployments, and handle server migration, clustering, and security. Get fast, precise matching with vetted, available freelancers.
Meet FRATCH Experts in Cologne, who have recently used WildFly
Hooman B.
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 D.
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 S.
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
Pierre G.
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
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.
Allal K.
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
Andreas E.
Last position:
Consultant at Iteratec GmbH
Discover over 15,000 top freelancers
Statistics of experts using WildFly
Aggregated from the professional profiles of matched freelancers.
Experience
26 years (Germany: 25 years)
Position duration
1.8 years (Germany: 1.9 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: 47%)
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 19 Sep 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 19 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
WildFly 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%)
- Transportation (86%)
- Retail (86%)
- Automotive (71%)
- Banking and Finance (57%)
- Insurance (57%)
- Government and Administration (57%)
- Energy (43%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
WildFly in practice
WildFly is a Java application server used for Jakarta EE workloads, REST services, and enterprise back ends. It is common in systems that need managed deployments, transactions, security, and application lifecycle control. Many teams still know it through its former JBoss AS roots.
What it powers
WildFly is used for:
- Business applications with server-managed Java components
- APIs and service layers with JAX-RS and related Jakarta EE tooling
- Systems that need transactions, messaging, and security in one runtime
- Migration work from older JBoss or Java EE setups
Skills that matter
Strong professionals working with WildFly understand deployment descriptors, datasources, connection pools, and the application server console. They also work with Maven, Jakarta EE APIs, CDI, JPA, JMS, and integration with databases, LDAP, and reverse proxies. Clear knowledge of server logs and startup issues is essential.
When companies bring help
Teams usually look for outside expertise when a rollout is blocked, an upgrade is risky, or the server needs tuning for a new production load. WildFly specialists also help with domain mode, clustering, SSL setup, and moving applications from older JBoss platforms. In Cologne, this often fits mixed in-house and remote delivery.
Ecosystem and tooling
WildFly fits into a wider Java stack that often includes Maven, Git, Jenkins, Docker, and monitoring tools. It runs well in environments where deployment control, configuration management, and repeatable releases matter. Good specialists know how to keep the server stable while the application code changes.
What good work looks like
Strong WildFly professionals do more than start the server. They document configuration, isolate deployment errors quickly, and leave behind clean settings for datasources, security realms, and integrations. They also explain trade-offs clearly so operations and application teams can support the setup after handover.
Frequently asked questions
Before you brief your next project: the most common questions about WildFly.
WildFly is used to run Jakarta EE applications, REST services, and other enterprise Java workloads on a managed application server. It is a strong fit when a team wants built-in support for deployments, transactions, security, and messaging. Many projects use it for internal business systems and service back ends.
WildFly is the community application server that tracks the open source Java enterprise stack, while JBoss EAP is the supported commercial counterpart from the same ecosystem. Compared with Tomcat, it offers a broader Jakarta EE feature set and more server-managed services. The right choice depends on whether you need a full application server or a lighter servlet container.
A strong WildFly specialist usually knows Jakarta EE, Maven, logging, deployment configuration, and server-side troubleshooting. Database connectivity, JMS, security setup, and reverse proxy integration are also common parts of the job. If your stack includes Docker or CI pipelines, that experience helps too.
Companies usually bring in WildFly expertise when deployments fail, upgrades are risky, or the runtime needs production tuning. It is also useful for migrations from older JBoss setups, application server clustering, and security hardening. Outside help can shorten the path from issue analysis to a stable release.
A WildFly project can sometimes be handled by a general Java specialist, but production systems benefit from someone who has already worked with server configuration, datasources, and deployment errors. If you have clustering, legacy migration, or strict security requirements, deeper application server experience matters more. The more complex the environment, the more valuable hands-on server knowledge becomes.
Yes, WildFly work is often suitable for remote collaboration because most tasks can be done through code, configuration, logs, and controlled test environments. On-site time can still help during incident response, handover, or work that needs access to internal infrastructure. In Cologne, many teams combine remote delivery with occasional local sessions.
Look for clear answers about deployment flow, configuration choices, and how they handled past server issues in WildFly. Good specialists can explain why a datasource fails, how a deployment is isolated, and what they would monitor after release. Clean documentation and calm troubleshooting are strong signs of quality.
WildFly remains relevant where teams need a full application server with Jakarta EE support and strong runtime control. It is not the best fit for every new service, especially very small microservices, but it still works well for enterprise back ends with shared security and transaction requirements. Many organizations keep it because it fits their existing Java platform well.
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.
Would you rather directly get in touch?
We always have the time for a call or email!
Philipp Thomaschewski
FRATCH CEO
