Enterprise Application Integration Experts in Germany
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Meet FRATCH Experts in Germany, who have recently used Enterprise Application Integration
Franz Bauer
Last position:
Product Development (AI) at Own initiative
AI telephone assistant platform
Claude Code, Google AI Studio, Python, LLM / Voice-AI, PostgreSQL
- Conception and hands-on development of an AI-supported telephone assistant platform (voice AI / LLM) – from idea and architecture to MVP/product.
- Built agentic workflows and full automations with Claude Code and Google AI Studio.
- Also delivered AI-supported work in client engagements: used Claude Code for governance documentation, requirement drafts, and automations.
Olaf Taesch
Last position:
BI Architect in a Kanban Team at Gulp / Randstad for HHLA
- Creation of automated tests.
- Extension of the functionality of the enterprise BI data warehouse.
- Design and development in SQL and PL/SQL.
- Data modeling as well as performance measurement and tuning.
- Creation of and contribution to user stories and concepts.
- Technical environment: Windows, Linux.
- Database: Oracle 19c incl. DWH, CDB, PDB.
- Tools: Confluence, CVS, Eclipse, Git, GitLab, Jira, N4, PL/SQL, SQL Developer, utPLSQL.
Thorsten Lenzen
Last position:
Senior Security Analyst
- Analysis and remediation of security vulnerabilities in a risk assessment system for energy trading
- System analysis
- Threat modeling
- Decision-making on vulnerability mitigation strategies
- Implementation of vulnerability detection mechanisms
- Security scans
- DevSecOps practices
- Technical environment: Visual Studio Code, JetBrains Suite, MS Threat Modeling Tool, DevSecOps, Git, AWS, DynamoDB, SQL Server, Endur, Snowflake, Orca
- Languages: C#, JavaScript, TypeScript, Python, PowerShell, Bash, Terraform, SQL
Marco Ronsdorf
Last position:
Senior Consultant at Oventrop GmbH & Co. KG
- Review of planning and production processes
- Identification of process improvements
- Design and implementation on SAP S/4HANA and SAP IBP
- Design review
- Conceptual design for future planning and production processes
- Definition of SOP process and decoupling points to reduce stocks and lead time
- Approach and conceptual design for automated statistical forecasting including ABC/XYZ
- Implementation and test SAP S/4HANA PP/DS, DDMRP, PP IBP SOP Demand
Waldemar Biller
Last position:
Software-Architekt Produktdaten-Management Tool at Ferchau Contract GmbH
- Definition of the software architecture
- Design and development of modules
- Supporting internal employees in the learning and onboarding process
- Tools: SAP CAP / CDS, Java 21, SAP Hana, SAP Business Technology Platform (BTP)
Matthias Ottowski
Last position:
IT Project Manager at IT service provider
Implementation of anti-money laundering requirements in accordance with AMLA/KYC for an international large bank in Munich
Services provided:
- Clarification of the assignment, definition of the work package structure for the AMLA/KYC implementation project
- AI-supported project planning using my own AI workflow for project management
- Creation of the project management plan
- Resource and capacity planning
- Development of collaboration structures between IT service provider and bank client
- Alignment of responsibilities (RACI matrix)
- Management of 5 project members (core team)
- Project control, project monitoring, project reporting
- Communication management
- Escalation management
- Stakeholder management (11 stakeholders)
- Permanent member of the steering committee
- Project representation internally and externally
- Project reporting, management of decision-making bodies
- Project volume: 506 person-days (development effort)
- Risk management
- Quality management
- Organization and running of workshops
Methods: PMI PMBOK, EVM, GWG, DORA, BAIT, KANBAN, AML, AMLR, AMLA, GWG, KYC
IT environment: JIRA, Confluence, Sharepoint, Kantata Kimble, AI LLM Copilot, ChatGPT, anti-money laundering systems (in-house developments and SMARAGD)
Mike Krüger
Last position:
Consultant at Capgemini
- Operation, administration, and further development of an Oracle 21c database environment on Oracle Linux, including performance analysis, troubleshooting, and PL/SQL
- Setup and operation of a Kubernetes environment on AWS (EKS)
Skills: Oracle 21c DBA, Oracle Linux, Kubernetes, AWS
Alexander Schulze
Last position:
AI Consultant for AI Voice Bot System at Rudolf Hörmann GmbH & Co.KG
- Consultant for system architecture, AI agents & integration, coach for data & process logic, Graph-RAG approaches, security and data protection.
- On-premise AI solutions with high compliance and performance requirements.
- Architecture decisions, operational setup, strategic prioritization & deployment.
- Technologies: LiveKit JS SDK, LiveKit Agents, Web Audio API, JS, AudioWorklet, Loki, vLLM, Zscaler, Docker, Neo4j, MySQL, Python.
- Models: GPT-OSS 20B, Whisper large v3 turbo, Qwen3-TTS.
Yahya Vall
Last position:
BTP Integration Engineer at SAP
(Technology)
- Design and implementation of an SAP BTP CAP microservice to consolidate cross-system transactional checks between SAP Sales Cloud (C4C) and On-Premise SAP CRM (05/2024– 06/2025)
- Bi-directional Cloud-to-On-Premise integration enabling real-time validation of Contact lifecycle and open document dependencies prior to record updates (05/2024– 06/2025)
Responsibilities / Deliverables
- development of custom CAP (Cloud Application Programming) services on SAP BTP
- API design, data mapping, and end-to-end integration across C4C (Cloud Runway) and legacy CRM (Traditional Runway)
Timo Heck
Last position:
Software Developer at Continentale Krankenversicherung AG
- Implementation of a REST-based web service for querying contract, claims, customer, and sales data as part of the Dialogmanager project.
- Data release is done in compliance with CoC requirements and individual user permissions from IAM (Identity and Access Management).
- Implementation using JBoss EAP 8.1 (JakartaEE 10) and Java 21 as well as JAX-RS, CDI, Microprofile-Config, Microprofile-OpenAPI.
Alex Odesser
Last position:
Contractor at Telefonica Germany GmbH & Co. OHG
- Data-analysis, Preparation, gathering and coordination of business requirements for retrieval of monthly- and long term (CLV – relevant) cost- and revenue-components per contract for a customer–base–grouping project (HUB–Project) for B2C-Postpaid-Controlling
- Concept and Implementation of cost- and revenue-KPIs calculation and corresponding CLV–reports (Oracle, Perl, SVN, MS SQL Server, MS Power BI, Serviceware Performance Analytics)
- Operational support of the HUB-Project – various ad-hoc reports, deployments, job-scheduling etc. (Oracle, SVN, BICSuite–Scheduler, DWSODA etc.)
- Analysis, implementation, retrieval and reporting of various physical and financial KPIs for B2P-Prepaid Business on an existing data-mart (Oracle, Perl)
Orhan Yazar
Last position:
SAP Senior Consultant OTC/MM/WM/LE/CS/PS/GTS, C4C-Cloud (Sales, Services, E-Commerce) at High-Technologie
- Support and consulting for the integration of SAP ECC into an SAP S/4HANA system, retirement of legacy systems, implementation, and process optimization in the new harmonized system
- Project implementation of S/4HANA Cloud Private & Public Sales & Services with SAP SCM/OTC/MM/LE/CS/PS, S/4HANA Cloud, CPI, BTP, EDI, IDOC, ABAP, User-Exit, SolMan, ITIL, SAP Cloud AL
- Customizing and optimization in OTC and MM, including condition maintenance, document type and item category extensions, integration with FI/CO, scheduling agreement configuration, material master and purchasing info record maintenance, release procedures, message control, and master data quality
- Ensuring integration of PTP with FI/CO, SD, and WM, process analysis, and efficiency improvement for the S/4HANA environment
- Process modeling in Signavio, workshops, and trainings
- 2nd & 3rd level support in OTC, MM, CS, PS, C4C Sales & Services, GTS, and MDG: incident and change tickets, feasibility analyses, service management, embedded analytics, customizing, tests, documentation, training, debugging, IDOC/EDI monitoring
- SAP S/4HANA migration: data migration, system harmonization, global rollouts, and template development
- ABAP development and optimization: reports, dialog programs, user exits, IDOC/EDI monitoring
Antonio Disarò
Last position:
Agile Project Manager at Openry GmbH
End Customer: Openry GmbH
E-commerce platform to globally commercialize high-quality Italian artistic productions. Several European shops are already operational and Asian markets soon coming up. My role as Agile Project Manager is to lead the complete team on both the customer and technical side (offshore) including strong strategic consulting, in a continuous delivery approach. As project in a small enterprise, the budget management aspects are particularly challenging, in a quest to deliver the maximum business value with minimal overheads. Technologies: Magento 2, M2E Pro, Linux, Apache, MySql, PHP (LAMP), Stripe
Tobias Stötzer
Last position:
SAP S/4 Public Cloud Role Model Expert with License Optimization at TIMETOACT Group
To achieve savings and optimize compliance, apps were restructured to align with identity management assignments, restrictions were defined, and overuse costs were cut. Communication with stakeholders, permission validation with users, and technical implementation provided significant added value for the group. Documentation was also prepared for the financial audit.
Carlos Medina
Last position:
Implementation in Pimcore/Shopware
- Consulting, design, analysis, software architecture and development
- Designing, developing, and implementing a Pimcore environment and connecting multiple external API systems in a Kubernetes environment, as well as various PIM and ERP systems
- Technologies: Unix environment, design, Symfony development, PHP 8+, software architecture, MySQL/SQL, shell scripting, Git DevOps tasks, AI coding support, Pimcore 12, Shopware 6
- Team size: >10 people
Discover over 15,000 top freelancers
Statistics of experts using Enterprise Application Integration
Aggregated from the professional profiles of matched freelancers.
Experience
28 years
Position duration
3.2 years
Positions per freelancer
18
Top business areas
Information Technology, Project Management, Quality Assurance
Top industries
Information Technology, Professional Services, Automotive
Certification focus areas
Information Technology, Project Management, Operations
Bachelor's degree or higher
77%
Master's degree or higher
32%
Certifications per freelancer
3
Most common languages
German, English, Spanish
Speak two or more languages
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 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 Application Integration
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
What it covers
Enterprise Application Integration connects business systems that must share data and processes without manual work. It is used to move messages between ERP, CRM, finance, logistics, and custom applications through reliable interfaces, service calls, and event flows.
Common stacks
- Message brokers and integration brokers
- ESB patterns and service orchestration
- SAP PI/PO, SAP Integration Suite, and similar middleware
- REST, SOAP, JMS, AMQP, and file-based interfaces
- Monitoring, retries, mapping, and error handling
When to bring in help
Companies hire freelance specialists when integration work touches many systems, old interfaces, or strict business rules. It also helps when a release is blocked by broken mappings, unstable queues, unclear ownership, or a migration from point-to-point connections to a cleaner integration layer.
Strong specialist profile
A strong professional understands data formats, canonical models, and how to keep interfaces supportable over time. They document flows clearly, test edge cases, and work with security, operations, and business teams so integrations do not fail silently.
Typical project work
- Interface design and message mapping
- Middleware setup and configuration
- Migration from legacy EAI or ESB solutions
- Monitoring, incident handling, and interface hardening
- Integration of SAP and non-SAP landscapes
Germany delivery
In Germany, enterprise integration often spans manufacturing, logistics, finance, and public-sector systems. Teams may work in English, German, or both, and freelance experts are often brought in to support remote delivery, on-site workshops, or handover sessions with internal specialists.
Frequently asked questions
Key details about Enterprise Application Integration, drawn from the questions we get asked most.
Enterprise Application Integration is used to connect business applications so they can exchange data and trigger processes automatically. It reduces manual transfers between systems such as ERP, CRM, finance, and logistics. Teams also use it to centralize monitoring, error handling, and transformation logic.
EAI usually covers broader system-to-system integration, including messaging, orchestration, file exchange, and legacy middleware. API integration is one part of that picture and is often better for direct service access. Many projects use both, but EAI is the wider architecture view.
A strong Enterprise Application Integration freelancer often works with SAP PI/PO, SAP Integration Suite, IBM integration products, MuleSoft, webMethods, or similar middleware. They should also know message brokers, mapping tools, and runtime monitoring. The exact stack depends on whether the landscape is SAP-heavy, cloud-based, or mixed.
Enterprise Application Integration work needs more than tool knowledge. Good specialists understand XML, JSON, REST, SOAP, JMS, data mapping, security, and error recovery. They also need clear communication because many issues sit between business rules and technical limits.
A Enterprise Application Integration project benefits from someone who has already handled live interfaces, not just training exercises. Simple API or message flows can be straightforward, but complex landscapes with SAP, legacy systems, and shared data models need strong architecture judgment. The right specialist should be able to explain trade-offs, not just configure middleware.
Yes, most Enterprise Application Integration work can be done remotely if access to systems, logs, and test environments is arranged well. In Germany, on-site time is still useful for workshops, cutover support, and stakeholder alignment. Many teams use a hybrid setup with remote implementation and selected in-person sessions.
A good Enterprise Application Integration specialist can describe how they handle retries, idempotency, monitoring, versioning, and rollback. They should show clear examples of interface design, not vague claims about tools. Ask how they document flows, test failures, and keep integrations maintainable after go-live.
No, Enterprise Application Integration is used in SAP environments, but it is not limited to them. It also connects custom applications, cloud services, partner systems, and older middleware platforms such as WebSphere MQ or other broker-based setups. In many companies, the challenge is mixing SAP and non-SAP systems in one reliable flow.
The average hourly rate of freelancers in Germany who have used Enterprise Application Integration in their recent projects is 114 €, which corresponds to a daily rate of about 913 € based on an 8-hour working day.
Of the freelancers in Germany who have used Enterprise Application Integration in their recent projects, 77% hold at least a Bachelor's degree and 32% hold at least a Master's degree.
On average, freelancers in Germany who have used Enterprise Application Integration in their recent projects have 28 years of professional experience, with a single engagement typically lasting around 3.2 years.
The most common languages among freelancers in Germany who have used Enterprise Application Integration in their recent projects are German (100%), English (97%), and Spanish (20%).
The most common industries among freelancers in Germany who have used Enterprise Application Integration in their recent projects are Information Technology (97%), Professional Services (70%), and Automotive (50%).
The most common business areas among freelancers in Germany who have used Enterprise Application Integration in their recent projects are Information Technology (100%), Project Management (93%), and Quality Assurance (67%).
Main locations of FRATCH Experts, who have recently used Enterprise Application Integration
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
