Enterprise Service Bus Experts in Germany
to connect complex systems with vetted, available freelancers matched by AIHire experts who integrate applications, orchestrate messages and modernize legacy interfaces with platforms such as Mule ESB, IBM Integration Bus and WSO2. FRATCH matches you quickly and precisely with vetted, available freelancers for your integration project.
Meet FRATCH Experts in Germany, who have recently used Enterprise Service Bus
Gerhard K.
Last position:
Senior Project Manager and Site Manager at HENSOLDT Optronics GmbH
- Set-up of the data center in Oberkochen (Defence division)
- Planning of the fiber-optic ring and simulation of Wi-Fi coverage
- Installation plan for WAN and LAN cables for office and production (infrastructure)
- Adaptation of the SAP system (R3) for the Oberkochen site (software)
- IT transformation of the SAP system to SAP HANA
- Planning of network infrastructure and server technologies in the SAP environment
- Pre-sales support and establishment of change management
- Independent coordination of utilities according to time, budget and quality
- Mapping of the project in MS Project and SERVICENow
- Development and design of hardware and software
- Demand management and portfolio management
- Set-up of a risk register and migration plan
- Preparation of payment-supporting documents in coordination with the responsible finance and commercial functions
- Budget: 5 million - 34 FTE
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
Michael K.
Last position:
Enterprise Architect, Lead Architect of the transformation program and coach at Swiss Ministry
- Development of the overall architecture
- Support for the respective workstreams in developing architectures in the areas of infrastructure, data centers, security, and network topology
- Management of the architect pool
- Support for program management in setting up the transformation project based on agile methods
- Consideration of regulatory requirements for IT projects in the federal administration
Santhosh K.
Last position:
Freelance Software Engineer at Zalando SE
- Drive migration of enterprise authorization platform from Styra DAS to open-source OPA via Skipper (Zalando's Golang-based ingress proxy) integration
- Optimise k8s resources and integrate native Prometheus metrics with OPA
- Migrate from internal monitoring solution to Prometheus CRs + Dash0
Tech Stack: Java/Kotlin, Golang, Python, Spring Boot, AWS, Kubernetes, Docker, OpenTofu, Prometheus, Grafana
Walid E.
Last position:
Solution Architect & DevOps Consultant at Extra Something – IT Consulting
- Technical leadership and architecture for enterprise clients (including LR Health & Beauty, Deutsche Bahn, Trusted Shops)
- Cloud migration, microservices architectures, CI/CD optimization
Christian T.
Last position:
HDI DevOps & Fullstack Engineer at HDI
- Spring Boot Software Engineer
- DevOps Engineer (Kubernetes, Azure DevOps)
Toolstack: Java, Spring Boot, Kubernetes, Helm, GitOps, ArgoCD, Docker, Azure DevOps, CI/CD Pipelines, Git, Postgres
Ulrich S.
Last position:
Senior Tester at Arvato Systems GmbH
- Planning, defining, and executing test cases for product creation, measurement data upload, and chart verification
- Developing keyword driven function tests using Robot Framework
- Defining and generating realistic test data with Python
- Implementing data-driven and REST API interface tests
- Performing image comparison tests based on OpenCV
- Developing load tests for various environments
- Conducting regression and end-to-end tests, reporting results, and managing defects
- Systematic expansion of test coverage
- Integrating Jenkins with Xray for test management
- Managing tickets with JIRA and documenting in Confluence
- Used Robot Framework, Playwright, Python, VS Code, Prectavi, JIRA, Confluence & Xray, Bitbucket, GitHub, Jenkins, MS Office 365, and Teams in an agile project.
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
Norbert G.
Last position:
Support for implementing the Pimcore CMS as well as support assistance and partner management at Akademisch Arbeitsgemeinschaft GmbH
- Support for implementing the Pimcore CMS, support assistance, and partner management for the existing application landscape.
- Know-how transfer to the existing application landscape.
- Advising stakeholders on the new implementation.
- Support in data modeling for Pimcore.
- Designing and overseeing data migrations from Salesforce to Pimcore using ESB.
- Creating user stories.
- 3rd level support for business-critical processes.
- Technologies: Salesforce Marketing, Sales, and Service Cloud; Talend ESB; Pimcore; Shopware; ERP system Move; DB2; MySQL; MS Office; MS Visio; Jira; Confluence.
Klaus E.
Last position:
Exasolution DBA at Rechenzentrum Innsbruck
- DBA Exasolution Server consulting and migration to version 8
- Analysis of SQL query performance and tuning
- Troubleshooting in batch scripts
- Technologies: Gitlab, EXACloud, EXAOperation, DBeaver, Control M
Robert V.
Last position:
Freelance Consultant Information Security and Business Continuity at Freelance business consulting
- Provide consulting services nationwide in both private and public sectors
- Advise on information security management systems, IT-Grundschutz, KRITIS compliance, TISAX, business continuity and crisis management
- Support the introduction of policies, risk management methods, asset registers and supplier management
- Conduct internal audits, training workshops and support audit preparations
Holger G.
Last position:
Senior Vice President of Engineering at Uptempo GmbH
- Responsible for development, architecture, QA, BI, AI and cloud operations across a global engineering organization of 150+ engineers in 21 teams across 6 countries
- Led the transformation from legacy single-tenant architecture to a cloud-native multi-tenant SaaS platform using AWS, Kubernetes and event-driven architectures
- Established engineering operating models, architecture governance and DevOps practices across multiple international teams
- Introduced Generative AI capabilities (Azure OpenAI, RAG) to enable AI-driven product features and secure enterprise data access
- Responsible for cloud infrastructure strategy, security and compliance (ISO 27001, SOC1/2) and cloud cost optimization (FinOps)
- Led enterprise integrations with ERP, CRM and commerce systems for global customers
Gilbert H.
Last position:
Process Design: Solution Development and Release Management at E.ON Digital Services
- Led workstream for analysis and optimisation of the solution development and release process within the newly established organizational structure
- Analyzed and adopted existing processes after transition of technical responsibility to E.ON Digital Services
- Supported the agile development approach within engineering teams
- Established a unified workflow for business requirements and clear communication interfaces, documented using Atlassian Jira on both the business and engineering sides
- Created dashboards with Rich Filters for Jira Dashboards to provide an overview of feature releases and their connection to technical releases
- Designed new burnup charts and statistics per release to improve transparency of overall technical progress at the product level
Lothar H.
Last position:
Solution Manager for PoC investigation and for replacing and refining an existing cloud and IoT power plant control system at Shell AG and NEXT Kraftwerke GmbH
- Investigating the PoC and replacing and refining an existing cloud and IoT power plant control solution for certificate management of renewable energy plants (solar, wind, biomass, etc.) for the largest European renewable energy network operator, including examining the field IoT devices and their integration and network connections, aiming for automated PKI key management.
- Messaging with Kubernetes for large API-connected enterprise applications
- Risk and attack vector analysis, software quality & bug assessments
- Agile workload scheduling via Jira & Confluence
- Evaluation of pub/sub message streams for MQ and Kafka.
- Various tests with “best design approaches” for resilience patterns like circuit breaker designs, throughput measurement and monitoring, bulkhead governors – for robust EA design
- Integration of API management with IBM's API Connect to Kubernetes for platform-agnostic microservices API management designs. Google Apigee
- Solution health check approaches for load burst situations + remedy
- Research and evaluation of potential sub-service providers in the coordinating role as solution manager. CIS20 controls.
- DREAD and STRIDE security assessments.
Discover over 15,000 top freelancers
Statistics of experts using Enterprise Service Bus
Aggregated from the professional profiles of matched freelancers.
Experience
25 years
Position duration
2.2 years
Positions per freelancer
16
Top business areas
Information Technology, Product Development, Project Management
Top industries
Information Technology, Automotive, Banking and Finance
Certification focus areas
Information Technology, Project Management, Quality Assurance
Bachelor's degree or higher
86%
Master's degree or higher
59%
Doctorate
9%
Certifications per freelancer
4
Most common languages
German, English, French
Speak two or more languages
97%
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 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 Enterprise Service Bus
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.
Enterprise Service Bus 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%)
- Automotive (59%)
- Banking and Finance (59%)
- Professional Services (52%)
- Transportation (48%)
- Education (45%)
- Government and Administration (38%)
- Insurance (34%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Integration backbone
An Enterprise Service Bus, commonly called an ESB, connects applications that use different protocols, data formats and communication patterns. It routes messages, transforms payloads and coordinates exchanges without forcing every system to integrate directly with every other system. Companies use ESBs to link ERP, CRM, payment, logistics and customer-facing applications across a shared integration layer.
Core capabilities
A strong ESB implementation handles synchronous APIs, asynchronous messaging, queues, events and scheduled data flows. It can apply validation, enrichment, transformation, routing and error handling while recording enough context for support teams to trace a transaction. This reduces point-to-point interfaces and gives integration rules a controlled place to evolve.
Ecosystem and tooling
The technology appears in commercial and open-source ecosystems, including Mule ESB, IBM Integration Bus, formerly WebSphere Message Broker, WSO2 and Apache ServiceMix. Specialists often work with XML, JSON, SOAP, REST, JMS, AMQP, Kafka, SQL and cloud connectors. They also use mapping tools, message brokers, API gateways, monitoring systems, version control and automated deployment pipelines.
Typical delivery work
- Design canonical data models and message flows
- Connect SAP, CRM, databases, partner systems and cloud services
- Modernize legacy interfaces without interrupting operations
- Configure retries, dead-letter handling, security and audit trails
- Test transformations, throughput, failure scenarios and releases
Projects may include a new integration hub, a migration from WebSphere Message Broker, or a transition from tightly coupled interfaces toward APIs and event-driven services. The right approach depends on existing systems, operational risk and the company’s future architecture.
When freelance expertise helps
Companies bring in freelance specialists when an integration program has a fixed delivery window, scarce platform knowledge or a backlog of fragile interfaces. Germany-based organizations may value professionals who can work with local stakeholders on-site when needed, while remote collaboration suits distributed teams. Clear documentation and communication in the required business language matter as much as configuration skills.
What strong professionals bring
The best professionals understand business processes as well as transport protocols and product tooling. They separate reusable integration logic from environment settings, protect credentials, define observability early and make failures recoverable. They also assess whether an ESB remains appropriate or whether an API-led, event-driven or direct integration pattern is simpler. Quality is visible in reliable deployments, useful runbooks, traceable messages and an architecture that teams can maintain.
Frequently asked questions
Everything clients usually want to know about Enterprise Service Bus, in one place.
An Enterprise Service Bus connects applications that communicate through different protocols, formats or interfaces. It can route, transform, validate and monitor messages between systems such as ERP, CRM, payment and logistics platforms.
An ESB provides a centralized integration layer with routing, transformation and orchestration capabilities. APIs support controlled service access, while event-driven designs distribute changes through events; a suitable architecture may combine these approaches rather than selecting only one.
A strong Enterprise Service Bus specialist usually understands REST, SOAP, XML, JSON, JMS, AMQP, SQL and message brokers. Experience with Kafka, API gateways, cloud services, identity management, CI/CD and observability is also useful.
The required depth depends on the integration landscape, operational risk and number of connected systems. An ESB migration or production redesign calls for a professional who has handled message failures, security, deployment automation, monitoring and legacy constraints in comparable environments.
Yes. Enterprise Service Bus work is often suitable for remote collaboration because configuration, testing and documentation can be managed through shared repositories and environments. On-site sessions may still help with workshops, access restrictions, operational handover or sensitive legacy systems.
Mule ESB can suit organizations that need a broad connector ecosystem, visual flow design and API-oriented integration capabilities. The decision should consider existing Mule assets, team skills, licensing, deployment targets and whether a lighter integration pattern would be easier to operate.
Ask for clear flow diagrams, test evidence, deployment documentation and examples of recoverable error handling. A capable ESB professional explains message ownership, security, observability, retries and operational support rather than focusing only on successful-path mappings.
IBM Integration Bus, formerly known as WebSphere Message Broker, remains relevant in environments that depend on its existing flows and operational model. A specialist should assess migration options, supported runtime components, maintenance needs and the business risk before recommending replacement or continued use.
The average hourly rate of freelancers in Germany who have used Enterprise Service Bus in their recent projects is 103 €, which corresponds to a daily rate of about 827 € based on an 8-hour working day.
Of the freelancers in Germany who have used Enterprise Service Bus in their recent projects, 86% hold at least a Bachelor's degree, 59% hold at least a Master's degree, and 9% hold a doctorate.
On average, freelancers in Germany who have used Enterprise Service Bus in their recent projects have 25 years of professional experience, with a single engagement typically lasting around 2.2 years.
The most common languages among freelancers in Germany who have used Enterprise Service Bus in their recent projects are German (100%), English (97%), and French (21%).
The most common industries among freelancers in Germany who have used Enterprise Service Bus in their recent projects are Information Technology (100%), Automotive (59%), and Banking and Finance (59%).
The most common business areas among freelancers in Germany who have used Enterprise Service Bus in their recent projects are Information Technology (100%), Product Development (86%), and Project Management (79%).
Main locations of FRATCH Experts, who have recently used Enterprise Service Bus
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
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Philipp Thomaschewski
FRATCH CEO
