JBoss Experts in Cologne
in minutes from over 15,000 CVs with the power of AI.Hire experts who work with JBoss EAP, WildFly, Java EE and Jakarta EE deployments, application server tuning, clustering and security. Get fast, precise matching with vetted, available freelancers.
Meet FRATCH Experts in Cologne, who have recently used JBoss
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
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.
Thomas Pawlitzki
Last position:
Freelance Software Architect at Self-employed
Markus Glagla
Last position:
Full Stack Developer at REWE Digital
- A warehouse valuation system was reimplemented using Java, Spring Boot, and Camunda. The backend solution focuses on integration and batch calculations, the frontend on managing formulas and reviewing results.
- Java 21
- Spring Boot
- JPA
- Maven
- REST
- Kafka
- PostgreSQL
- DB2
- Liquibase
- Google Cloud Storage
- Keycloak
- GitLab CI/CD
- Helm
- Terragrunt
- SonarQube
- Angular
- IntelliJ
- JUnit 5
- Mockito
- Open API
Andreas Ernst
Last position:
Consultant at Iteratec GmbH
Alexander Vasiliev
Last position:
Senior DevOps / Platform Engineer at Kaufland e-commerce / real.digital (ex hitmeister.de)
- Evolved the platform from bare-metal infrastructure with a monolithic PHP application to a hybrid Google Cloud architecture with Go microservices on Kubernetes
- Managed and scaled a production infrastructure with 300+ VMs and dozens of clusters, including MySQL, PostgreSQL, MongoDB, RabbitMQ, Redis and Elasticsearch clusters
- Designed architecture, deployment, monitoring, performance analysis, and upgrades for all platform services using Terraform and Ansible
- Migrated observability systems from ELK and Prometheus to Datadog, managed with Terraform
- Introduced Jenkins CI/CD with SonarQube integration and automated tests to speed up feedback cycles
- Containerized the testing environment and implemented GitLab CI pipelines for Docker image builds, static code analysis, and infrastructure tests
- Performed zero-downtime migrations of MySQL and MongoDB clusters to Google Cloud
- Developed reusable Ansible roles for database clusters and automated data obfuscation for staging environments
- Decomposed monolithic databases and migrated to microservice architectures
- Built tools to detect and optimize slow queries in MySQL and MongoDB
- Conducted online schema migrations with pt-online-schema-change without downtime windows
- Developed internal Go applications for batch queries, GitLab-Jira integration, and MongoDB backup recovery
- Technologies: Debian, Ubuntu, Alpine, Go, Bash, Python, PHP, SQL, GitLab CI, Jenkins, Drone CI, MySQL, MongoDB, PostgreSQL, Redis, Elasticsearch, RabbitMQ, Kafka, Docker, Kubernetes, Nomad, Ansible, Terraform, Grafana, ELK, Prometheus, Datadog, Nagios, Zabbix, Nginx, HAProxy, Vault, Helm, SonarQube, Filebeat, Auditbeat, Google Cloud, AWS
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
Sebastian Thees
Last position:
Software Engineer / Cloud Engineer at OC Fulfillment GmbH
- Hybrid role as the first software engineer in the company to bootstrap the organization, laying out technical foundation and advising management on organizational aspects.
- Set up the SaaS platform architecture, selected languages and tools, and designed processes to deliver customer value quickly and reliably.
- Designed and implemented build and continuous deployment pipeline with multi-tenant approach enabling extreme scaling of the SaaS platform.
- Established initial ITSM and support processes, provided monitoring and alarming, and participated in the on-call team.
- Proposed new approaches to scale the platform and improve backend interfaces to mitigate bugs and communication overhead.
- Mentored new employees and served as a trustful team member and lateral leader.
- Conducted interviews for technical roles.
- Used technologies: Typescript, Node.js, Bash, Google Cloud Platform (App Engine, Cloud Run, Cloud Functions, Google Endpoints, Firebase), GitHub Actions, Docker, Terraform, MongoDB, Firebase, REST APIs, GraphQL.
Jacqueline Haefke
Last position:
Kitchen Appliance Manufacturer
Setting up and enhancing an international subscription management system
Migrating and decommissioning a Hybris-SAP system and integrating Zuora
Implementing numerous interfaces to various systems (external and internal)
Setting up and improving monitoring with Grafana, Prometheus, and Databricks
Introducing logging with Loki
Implementing business requirements using jQuery, Thymeleaf, Spring Boot, Java, Go, and Python
Adjusting and extending the GitLab CI pipelines
Setting up and extending infrastructure as code with Terraform and ArgoCD on AWS
Setting up and running E2E and performance tests
Expanding the Databricks business intelligence solution to provide various KPIs
Responsibilities: Architecture, DevOps, development, unit tests, coaching employees and apprentices, E2E, smoke, and integration tests, agile methods consulting (Kanban, Scrum)
Technologies and methods: Java, Go, Kotlin, Node.js, Spring Boot, SOAP/REST, Quarkus, Thymeleaf, Vaadin, Slack, Jira, Confluence, IntelliJ, GitLab, SQS, Kafka, AWS, Kubernetes, Terraform, Maven, Gradle, GitLab CI, Databricks
Last position:
Rewe Digital
- Creation of Spring Boot integration tests
- Creation of JUnit tests for the coupon system
- Creation of component tests for Kafka topics
- Creation of CI/CD pipeline scripts
- Creation of UI tests with Playwright
- Creation of UI tests with Cypress
- Review of developer unit tests
- Planning the test architecture for integration tests
- Creation of the test automation concept
- Evaluation and creation of test reports
Miroslav Pavlovic
Last position:
Managing Consultant at ICTT Digital Networks
TSI customer project data center migration (since 2024-07-01)
Inventory of active IT/OT components
Creation and management of the migration concept
Planning and execution of migration tests
Carrying out the IoT migration (network, VPN gateway, firewall adjustments)
Service migrations (mobile services)
Re-design of outdated technologies/services
Integration into operations
Logistics bus project at Daimler Truck and Mercedes Benz (2024-01-01 – 2024-06-30)
Development manager/technical consultant for the logistics bus
Coaching customers/TSI development teams and product owners
Creation/review of architecture designs and documentation
Project planning/customer meetings
Support for migrations from Java/WebSphere/JBoss to Kubernetes
Service design for performance visibility (2022-06-01 – 2023-10-31)
Performance visibility service development, network monitoring service for Telekom internal customers
Planning/integration/expansion of PV monitoring in cloud environments (AWS, Microsoft Azure)
Design/planning/implementation of performance visibility services based on NetScout/Kadiska software in customer environments
Agile project management/execution of PoCs (proof of concepts)
Design/architecture/concept creation
Diagnosis of network issues
Packet capturing/debugging
Preparation of customer and training documentation
Fabian Zur Heide
Last position:
Freelance IT Specialist
IT specialist Application Engineering / Software Development since 2012
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 JBoss
Aggregated from the professional profiles of matched freelancers.
Experience
28 years (Germany: 24 years)
Position duration
3 years (Germany: 2.2 years)
Positions per freelancer
17
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Automotive, Banking and Finance
Certification focus areas
Information Technology, Product Development, Project Management
Bachelor's degree or higher
100% (Germany: 90%)
Master's degree or higher
80% (Germany: 56%)
Doctorate
20% (Germany: 7%)
Certifications per freelancer
5 (Germany: 3)
Most common languages
German, English, French
Speak two or more languages
100% (Germany: 97%)
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 JBoss
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
JBoss in practice
JBoss is an enterprise Java application server used to run business applications, APIs and integration services. It is often discussed together with Red Hat JBoss EAP and WildFly, which are the names many teams still use when they search for help. Strong specialists keep legacy systems stable while preparing them for cleaner deployment and easier operations.
Typical work
- Install and configure JBoss EAP or WildFly
- Deploy Java EE or Jakarta EE applications
- Tune data sources, messaging and security
- Set up clustering, failover and log handling
- Support upgrades, migrations and rollback plans
Where it fits
JBoss is common in internal business systems, portals, integration layers and older enterprise platforms that still need careful support. In Cologne, it can appear in corporate IT, insurance, logistics and media environments where stable Java runtimes matter and teams need specialists who can work with existing release and operations processes.
Tools and skills
Good JBoss professionals know the server itself, but also the wider stack around it. They work with Java, Maven, Gradle, JDBC, JMS, REST services, Linux, shell scripts and container setups when the runtime is moved into modern delivery pipelines. They also understand configuration files, domain mode and troubleshooting under load.
When to bring in help
Companies bring in freelance experts when an application server is hard to upgrade, production behavior is unclear, or the original setup is poorly documented. That is common after vendor changes, platform refreshes or failed migration attempts. A strong specialist can isolate the issue, reduce risk and keep business systems running.
What strong experts deliver
A solid JBoss expert does more than patch errors. They review architecture, clean up deployment steps, improve security settings and make server behavior repeatable across environments. They explain trade-offs clearly, document the work and leave the team with a setup that is easier to maintain.
Frequently asked questions
Not sure where to start with JBoss? These answers cover the essentials.
Companies bring in JBoss specialists for application server setup, deployment support, tuning and migration work. They are often needed when a Java business system is running on JBoss EAP or WildFly and production issues need careful diagnosis. The work usually includes configuration, troubleshooting and making releases safer.
JBoss is the common umbrella term many teams use, but people may also mean Red Hat JBoss EAP or WildFly. The exact product matters because support, configuration and upgrade paths differ. A good freelancer will ask which runtime is in place before starting work.
JBoss is a full application server, while Tomcat is usually used as a lighter servlet container. WebSphere serves a similar enterprise role but has its own tooling, administration model and migration path. The right choice depends on how much enterprise Java functionality the application needs.
A strong JBoss specialist usually also knows Java, Jakarta EE, REST, JMS, JDBC and Linux. In many projects, Maven, shell scripting, certificate handling and basic container knowledge are also useful. Those skills help with deployment, debugging and operations work.
JBoss work is rarely a good fit for general Java help only. If the task involves server migration, clustering, security hardening or production incidents, you want someone who has handled similar runtime setups before. Smaller deployment tasks can be simpler, but legacy environments often hide edge cases.
Most JBoss work can be done remotely if the team can provide access to logs, configs and test environments. On-site help in Cologne can be useful when the environment is highly sensitive, the documentation is poor, or several internal teams need quick alignment. Many projects use a mix of both.
Look for someone who can explain the server setup clearly, not just list tools. A good JBoss expert has practical experience with deployment, upgrades, security and recovery, and can show how they reduced risk in previous systems. Clear documentation and a structured approach are strong signs of quality.
Before joining a JBoss project, freelancers should understand the exact server version, release process, access model and expected support windows. It also helps to know whether the system is legacy, in migration, or tied to specific infrastructure rules. Clear expectations make troubleshooting much faster.
The average hourly rate of freelancers in Cologne, Germany who have used JBoss in their recent projects is 91 €, which corresponds to a daily rate of about 731 € based on an 8-hour working day.
Of the freelancers in Cologne, Germany who have used JBoss in their recent projects, 100% hold at least a Bachelor's degree, 80% hold at least a Master's degree, and 20% hold a doctorate.
On average, freelancers in Cologne, Germany who have used JBoss in their recent projects have 28 years of professional experience, with a single engagement typically lasting around 3 years.
The most common languages among freelancers in Cologne, Germany who have used JBoss in their recent projects are German (100%), English (100%), and French (15%).
The most common industries among freelancers in Cologne, Germany who have used JBoss in their recent projects are Information Technology (92%), Automotive (54%), and Banking and Finance (54%).
The most common business areas among freelancers in Cologne, Germany who have used JBoss in their recent projects are Information Technology (100%), Product Development (92%), and Quality Assurance (62%).
Main locations of FRATCH Experts, who have recently used JBoss
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 
Munich 
Frankfurt 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
