RabbitMQ Experts in Cologne
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Meet FRATCH Experts in Cologne, who have recently used RabbitMQ
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
Patrick D.
Last position:
Fullstack Developer
- SPA for automated communication of medical findings with role-based access (Sanctum)
- Server-side LLM integration (OpenRouter) with structured processing
- Automated sending via SMS/voice call (Twilio, ElevenLabs) with queue + status retry
- Full test coverage with 80+ documented test cases
Technologies: PHP, Laravel, LLM API (OpenRouter), Twilio, ElevenLabs, Laravel Sanctum, PHPUnit, Playwright, Docker, REST
Hassan A.
Last position:
DevOps & Observability Consultant at ALDI South (Albrecht's Discount)
- Supporting the DevOps team in Terraform-managed, multi-region AWS infrastructure to achieve environment parity.
- Developed end-to-end CI/CD pipelines using AWS CodePipeline, CodeBuild, and CodeDeploy, automating the build and deployment.
- Maintained pre- and post-deployment scripts to automate critical tasks such as database schema migrations and environment sanity checks.
- Implemented CI/CD flow specifically for hotfixes via separate Git branches, managing back-merge activities from feature branches to release branches to ensure code integrity through automated conflict resolution.
- Deployed a dedicated, lightweight sanity check application hosted cost-effectively on Azure Container Apps to run automated health and basic functional checks as a post-deployment activity triggered via pipeline.
- Investigated production incidents through code changes and AWS CloudWatch logs.
- Coordinated integration of Dynatrace APM and its APIs for monitoring purposes.
- Full stack QA strategist for a high-traffic e-commerce platform built on a layered architecture for the back-end testing of core platform services, especially the order management system in Zed and Glue layers.
- Managed automation activities, testing process, and refactoring practices.
- Responsible for framework migrations, setup, and training for new automation frameworks.
- Promoted a shift-left approach within the QA team and created the test concept.
- Participated in meetings with IT managers, business owners, product owners, and team members.
- Designed and implemented contract testing to validate API schema compatibility between the order management system and the Zed and Glue layers, reducing production-relevant breaking changes by approximately 3%.
- Led the migration to a multi-environment framework that enabled test execution across 4 country configurations from a single codebase.
- Integrated automated unit and functional tests directly into the GitLab CI/CD pipeline, reducing pipeline runtime by 32%.
- Coached and trained 5 QA engineers across Germany and Hungary in test automation, framework architecture, and best practices.
- Architected a layered backend test automation framework separating business logic, API request builders, and the database layer.
- Piloted AI-assisted testing with Playwright Agents, the Playwright MCP Server, and GitHub Copilot for automated test generation, execution, and self-healing Playwright scripts.
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
Alexander V.
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
Jacqueline H.
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
Andreas B.
Last position:
Senior Frontend Developer at Roadex
- Development of an app
- Technologies: React Native, Expo, SupaBase, TypeScript, GitHub, Trello
Discover over 15,000 top freelancers
Statistics of experts using RabbitMQ
Aggregated from the professional profiles of matched freelancers.
Experience
25 years (Germany: 19 years)
Position duration
2.1 years (Germany: 1.9 years)
Positions per freelancer
21 (Germany: 13)
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Retail, Automotive
Certification focus areas
Information Technology, Project Management, Operations
Bachelor's degree or higher
86% (Germany: 88%)
Master's degree or higher
57% (Germany: 52%)
Certifications per freelancer
1 (Germany: 2)
Most common languages
German, English, French
Speak two or more languages
100% (Germany: 98%)
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 RabbitMQ
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.
RabbitMQ 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%)
- Retail (88%)
- Automotive (75%)
- Banking and Finance (75%)
- Insurance (63%)
- Transportation (63%)
- Government and Administration (63%)
- Media and Entertainment (50%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Messaging flow
RabbitMQ is used to move work between services without tying them together directly. It fits order handling, background jobs, notifications, and event-driven systems where messages must wait, route, or retry safely. Strong experts know when to use queues, exchanges, and acknowledgements, not just how to install the broker.
Core skills
A strong RabbitMQ specialist understands AMQP, routing keys, dead-letter queues, and consumer behavior.
- queue and exchange design
- retry and dead-letter handling
- publisher confirms and acknowledgements
- consumer prefetch and throughput tuning
- monitoring, alerts, and failure recovery
Common stack
RabbitMQ often sits beside Java, Spring Boot, .NET, Node.js, Python, Docker, Kubernetes, and cloud managed services. Experts also work with TLS, authentication, vhosts, and access policies to keep traffic controlled. In Cologne, this is especially useful for teams that run distributed systems across product, logistics, media, or internal business tools.
When to bring help
Companies usually bring in freelance specialists when message flows become unreliable, queues pile up, or a service redesign changes the integration pattern. They also help during migrations from direct HTTP calls, when teams need operational guidance, or when on-site and remote specialists must work with the same delivery and support setup.
What good work looks like
Strong RabbitMQ professionals keep message handling predictable under load and failure. They document routing logic, define clear retry paths, and make it easy to trace a message from producer to consumer. They also understand when RabbitMQ is the right choice and when a different event or streaming tool fits better.
Delivery focus
Typical deliverables include broker setup, queue topology, exchange and binding design, consumer services, and operational runbooks. Experts may also review existing message flows, improve resilience, clean up stale queues, and support incident response. For Cologne teams, good collaboration usually means clear English, direct communication, and practical handover notes.
Frequently asked questions
Quick answers to the questions that come up most around RabbitMQ.
RabbitMQ is used to pass messages between services, jobs, and workers without making every system call happen in real time. It is common for order processing, notifications, file handling, task queues, and event-driven workflows. Teams choose it when they need buffering, routing, and reliable delivery.
RabbitMQ is usually chosen for classic message brokering: flexible routing, acknowledgements, retries, and many delivery patterns. Kafka is stronger for durable event streams and replay at scale, while Redis-based queues are often simpler but less feature-rich. The best choice depends on whether the project needs messaging, streaming, or a lightweight queue.
A strong RabbitMQ specialist usually knows at least one backend stack well, such as Java, Spring Boot, .NET, Node.js, or Python. Useful extras include Docker, Kubernetes, monitoring, TLS, and basic system administration. They should also understand failure handling, idempotency, and service integration design.
RabbitMQ projects that only need a basic queue can be handled quickly, but production systems need deeper experience. Look for someone who has designed exchanges, handled retries, tuned consumers, and supported live systems. If the broker is part of a critical workflow, practical operations experience matters as much as setup knowledge.
Yes, RabbitMQ work is often well suited to remote delivery because most design decisions can be reviewed through diagrams, message flows, and configuration. For Cologne teams, remote specialists can still join planning, incident reviews, and handover sessions in English or German. On-site time is useful when the broker sits in a larger integration or operations effort.
Ask for concrete examples of message topology design, retry strategy, dead-letter handling, and recovery from consumer failures. A strong RabbitMQ professional explains trade-offs clearly and documents the broker setup, not just the code. Good signs are clean routing, sensible queue names, and operational notes that your team can actually use.
No, RabbitMQ is useful anywhere work needs to be decoupled, buffered, or routed. It can connect monoliths, batch workers, integration layers, and external systems as well as microservices. Many teams use it to move slow or fragile tasks out of request paths.
Before bringing in a RabbitMQ specialist, collect current architecture notes, queue names, failure cases, and examples of message payloads. It helps to clarify which systems publish, which consume, and what must happen on retries or errors. That gives the freelancer a clear view of the real routing and reliability problems.
The average hourly rate of freelancers in Cologne, Germany who have used RabbitMQ in their recent projects is 91 €, which corresponds to a daily rate of about 726 € based on an 8-hour working day.
Of the freelancers in Cologne, Germany who have used RabbitMQ in their recent projects, 86% hold at least a Bachelor's degree and 57% hold at least a Master's degree.
On average, freelancers in Cologne, Germany who have used RabbitMQ in their recent projects have 25 years of professional experience, with a single engagement typically lasting around 2.1 years.
The most common languages among freelancers in Cologne, Germany who have used RabbitMQ in their recent projects are German (100%), English (100%), and French (25%).
The most common industries among freelancers in Cologne, Germany who have used RabbitMQ in their recent projects are Information Technology (100%), Retail (88%), and Automotive (75%).
The most common business areas among freelancers in Cologne, Germany who have used RabbitMQ in their recent projects are Information Technology (100%), Product Development (88%), and Quality Assurance (75%).
Main locations of FRATCH Experts, who have recently used RabbitMQ
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 
Frankfurt Request a free demo
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FRATCH CEO
