OData Experts in Germany
for connected business systems, matched in minutes with vetted freelance specialistsHire experts who design and implement OData services, connect SAP S/4HANA data with business applications, and secure queryable APIs across enterprise environments. FRATCH matches you quickly with precise, vetted and available freelancers.
Meet FRATCH Experts in Germany, who have recently used OData
Thorsten H.
Last position:
Product Owner, AI Manager at crazyALEX.de GmbH
Digitalization of real-world locations using 3D/LiDAR scans to make spatial data usable for AI applications and derive concrete use cases and prototypes from it.
- Digital capture of real-world locations as a basis for faster planning and analysis
- Browser-based access to 3D data for easier use and coordination
- Conversion of spatial data into concrete use cases, prototypes and AI training scenarios
- Planning basis for urban development and other digital applications of the future
Keywords: LiDAR, 3D scan, AI, use cases, AI training, prototyping, Python, web development, data models, architecture
Mladen B.
Last position:
Senior SAP BW/4HANA / BPC / SAC Consultant – Freelancer at Company in Berlin and Belgium in the utilities sector
- Implementation of data models in BW/4HANA, ABAP CDS Views, HANA Calculation Views, AMDP Scripts, OData Services, object-oriented ABAP in BW, SAC.
- Adjustments in BPC for BW/4HANA.
Sabahattin K.
Last position:
Sole responsibility (design, development, infrastructure, operations) at Own project busik.ch
- Ride-sharing and bus platform, live and fully functional. Backend with Spring Boot 4.1 on Java 21, PostgreSQL with Flyway, and Testcontainers integration tests. Hosted in my own AWS account (ECS Fargate, ALB, ECR, IAM Least-Privilege) with CI/CD via GitHub Actions and OIDC federation without static credentials. Development fully AI-supported with Claude Code, including custom skills and project-specific memory. Spring Boot · Java 21 · PostgreSQL · Flyway · Docker · AWS ECS/ALB/ECR · CI/CD · GitHub Actions · Claude Code
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
Giuseppe A.
Last position:
Embedded Software Developer at Inheco
- AI Integration (LLM & RAG): Design and build of an internal intelligent RAG system (Retrieval-Augmented Generation) based on LLMs, n8n, and vector data for the automated analysis of technical documents and error logs.
- Design & Implementation: Design of a robust RS-232/UART communication interface for an SBC-based embedded device to control medical shaker systems.
- Architecture & Protocol Design: Implementation of a highly maintainable software structure (OOP, SOLID) and definition of hardware-close, resilient communication protocols including multithreading and advanced error handling.
- Quality Assurance & DevOps: Test automation using xUnit, integration tests directly on the hardware target, and maintenance of technical documentation according to strict medical technology standards via Azure DevOps.
Label: C#, .NET, LLMs, RAG, n8n, RS-232, UART, Multithreading, async/await, xUnit, gRPC/protobuf, Blazor, MudBlazor, EF Core, Visual Studio 2026, Azure DevOps
Georgi L.
Last position:
Techno-functional MM/SD consultant at GLIT Circle GmbH
- Implementation of the S/4HANA transformation (brownfield) at an agricultural equipment manufacturer
- Implementation of the new supplier evaluation in S/4HANA, including programmed technical adjustments to customer-specific processes
- Conducting workshops with business departments on technical and functional changes in S/4HANA, with a focus on P2P processes and approval processes
- Preparation of the new system incl. customizing and conversion of customer-specific ABAP developments to Clean ABAP
Philipp D.
Last position:
IT Architect & IT Product Manager at Dr. Ing. h.c. F. Porsche AG
- Optimization of software lifecycle processes for SAP platform apps (BTP CAP)
- Development of template MCP servers for S/4 CALM systems of Porsche AI (BTP)
- Design, development, and IT product management for two MS CoPilot custom agents supporting SAP systems (incl. MCP integration)
- Lead Center of Practice: AI-assisted ABAP development
- Initiation and coordination of the proof of concept implementation of conduct.ai
- Advising application teams on software and integration architecture, clean core principles and implementation, as well as AI use on the SAP platform
Mindaugas K.
Last position:
SAP Developer at Jungheinrich - Jungheinrich Aktiengesellschaft, based in Hamburg, is a publicly listed German company
Project description: SAP S/4HANA implementation (greenfield). SCRUM methodology Scope: SAP ABAP, BTP, RAP, CDS, ABAP Cloud, Clean Core, CI/CD for SAPUI5/ABAP with GitLab, unit tests, and test-driven development (TDD)
Maurice K.
Last position:
Solution Architect – Cloud-Native Transformation of IoT Monitoring Platform at NDA / Wind Energy Sector
- Led the end-to-end architecture and migration of a legacy on- premise IoT monitoring system to a cloud-native Azure platform within a 17-member development team
- Designed and implemented a scalable microservices architecture (Java 21, Spring Boot, Kubernetes, Azure Services), decoupling IoT data streams and eliminating legacy system bottlenecks
- Defined technology stack, mentored developers, and orchestrated cross-functional teams in 4 countries to ensure high-quality delivery and alignment with architectural standards
- Drove requirements engineering and system redesign, removing years of technical debt and introducing event-driven processing and automated workflows
- Key Achievements
- Increased system stability and uptime by ~10x, eliminating need for 24/7 DevOps intervention
- Reduced hosting costs by ~80% (5x savings) through cloud optimization
- Improved performance and scalability, enabling stable handling of high-volume IoT data streams
- Delivered successful zero-disruption migration from on-prem to cloud, with strong user satisfaction and reliability from day one
Egon M.
Last position:
SAP S/4HANA Integration Consultant – MES / Siemens Opcenter Integration at Metso Corporation
- Supported an integration project between SAP S/4HANA and a MES / Siemens Opcenter system via Azure Middleware.
- Responsible for SAP-side analysis, mapping and provisioning of relevant data objects such as material master data, production orders and process orders using SAP standard APIs and OData services.
- SAP-side mapping for Material Master, Production Orders and Process Orders
- Usage of API_PRODUCT, API_PRODUCTION_ORDER_2_SRV and API_PROCESS_ORDER_2_SRV
- Consideration of SAP S/4HANA Advanced Available-to-Promise for order confirmation, production availability and downstream MES execution
- Support for SAP Gateway and OData service topics
- Interface coordination between SAP S/4HANA, Azure Middleware and MES / Siemens Opcenter
- Support for testing, monitoring and error analysis
- Worked with BTC Cockpit and Deloitte ASADEV Tool
Orhan Y.
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
Tobias E.
Last position:
C# Fullstack Developer / Scrum Master / Product Owner Cloud Services / Product Owner Infrastructure & Core Services / Head of at TRUMPF Werkzeugmaschinen SE & Co. KG
- Many years of work in different roles within the MES product area, with technical development, agile leadership, and strategic product responsibility for key MES components.
- As C# Fullstack Developer / Scrum Master (2018–2020): further development of a programming system for laser machines, introduction and moderation of Scrum processes, quality assurance through automated tests and documentation.
- As Product Owner Cloud Services (2019–2020): leadership of two AWS-based cloud services for providing laser data and legal documents, definition of the product vision, backlog maintenance, and stakeholder communication.
- As Product Owner Infrastructure & Core Services / Head of DevOps / Product Security (2020–2025): responsibility for core MES components such as Service Orchestrator, Licensing Service, IAM, and AppLauncher, building and maintaining Azure DevOps pipelines for over 70 components, and introducing security standards (CRA).
- Company-wide contact for Azure DevOps and largely responsible for its introduction.
- Standardized versioning of all components.
- Structuring of CI/CD and release pipelines.
- Building an agent scale set with special software configuration.
- Connecting Azure DevOps with ServiceNow.
- Standardizing the integration of security tools such as SonarCloud, Dependency Track, and digital signing.
- Technologies & tools: .NET (C#, 4.8 / Core 3.x / 8), WPF, WCF, REST, OData, JSON, DevExpress, Duende IDP, Azure DevOps, AWS, PowerBI, SonarCloud, Dependency Track, Visual Studio Pro.
- Method: Scrum.
- Project language: German / English.
Gavrilo O.
Last position:
Head of Software Development at Davidsmeyer & Paul GmbH
- Strategic project development, realisation, and implementation with internal and/or external development team
- Multi stakeholder management
- Planning new projects, cost calculation, risk calculation
- AI project for the electrical components production
- Building management systems integrations (BACnet, Modbus, etc)
- Inhouse BACring system architecture and development (control system for fire protection and smoke extraction systems)
- Inhouse MES system architecture and development
- Project management
- Agile-SCRUM project development
- Solution architecture and processes analytics (UML)
- Business application development
- Jira project management
- Reporting and documentation
- Recruitment process for the IT staff
- Software architecture, project development, costs, risks
- Education IT staff (internal and external)
- Responsibility for 5 development/DevOps/QA teams
Joaquim L.
Last position:
Freelance ABAP Developer, Logistics at Cheplapharm
- Tested integration of TIBCO EBX with SAP S/4HANA via TIBCO BusinessWorks – proof of concept
- Implemented use case: communication between TIBCO EBX and SAP S/4HANA via IDocs to exchange material master data and business partner data
- Customized, configured, and implemented inbound and outbound processing in the SAP S/4HANA environment for communication with the TIBCO EBX software interface
- Distributed classes, characteristics, and values between TIBCO BusinessWorks and SAP S/4HANA and customized the inbound processing
- Documented the technical components
Mathis D.
Last position:
Senior Web/Frontend Developer at KemCom GmbH
- Modernized the homepage of a luxury residential building for a better user experience and contemporary design
- Developed and implemented the website and modules using current web technologies
- Optimized for SEO to improve visibility in search engines
- Created a modern and professional appearance that enhances the building's image
- Increased efficiency in content maintenance by using a CMS
- Technologies: HTML5, HTML, CSS3, CSS, JavaScript, Umbraco, C#, .NET
Discover over 15,000 top freelancers
Statistics of experts using OData
Aggregated from the professional profiles of matched freelancers.
Experience
19 years
Position duration
2 years
Positions per freelancer
17
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Manufacturing, Professional Services
Certification focus areas
Information Technology, Project Management, Product Development
Bachelor's degree or higher
80%
Master's degree or higher
52%
Doctorate
13%
Certifications per freelancer
3
Most common languages
German, English, French
Speak two or more languages
93%
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 OData
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.
OData 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 (91%)
- Manufacturing (66%)
- Professional Services (58%)
- Automotive (48%)
- Banking and Finance (45%)
- Retail (45%)
- Transportation (40%)
- Energy (39%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
What OData does
OData, short for Open Data Protocol, is a standard for exposing and consuming structured data through web APIs. It gives clients consistent conventions for resources, relationships, filtering, sorting, paging and metadata. Companies use it to connect enterprise data with web applications, mobile interfaces, reporting tools and automation services.
Core API capabilities
OData services use predictable HTTP requests and URI options such as $filter, $select, $expand, $orderby and $top. The protocol can publish an Entity Data Model so clients understand available entities, fields, keys and relationships. Strong implementations also handle validation, pagination, concurrency, error responses and precise authorization rules.
Ecosystem and tooling
OData appears across Microsoft and SAP environments as well as open-source stacks. Relevant technologies include ASP.NET Core OData, Microsoft.OData libraries, Apache Olingo, SAP Gateway and SAP S/4HANA services. Professionals may also work with:
- Entity Data Model design and service metadata
- SAP Gateway and Fiori integration
- .NET, Java or JavaScript service implementations
- API testing, documentation and client generation
When companies need specialists
Freelance expertise is useful when an existing service needs new entities, associations or query options without breaking consumers. It also helps during SAP integrations, legacy API modernization, performance tuning and migrations between OData implementations. Companies in Germany often need specialists who can coordinate remote delivery with internal product, SAP and security teams, while communicating clearly in English or German.
Delivery and project fit
A project may involve exposing ERP data, building a service for a Fiori application, creating a reporting interface or standardizing APIs across business units. The professional must clarify data ownership, service boundaries, authorization, expected query patterns and compatibility requirements before changing the model. Test data, contract tests and monitoring make the result easier to operate.
What strong professionals bring
Strong OData professionals understand the protocol beyond generating endpoints. They model useful entities, control expensive expansions, protect sensitive fields and keep metadata stable for consuming applications. They can trace a slow request through the API, database and authorization layers, explain trade-offs to stakeholders, and leave clear tests and documentation for the team.
Frequently asked questions
Quick answers to the questions that come up most around OData.
OData is used to expose structured business data through consistent, queryable web APIs. It is common in SAP integrations, Microsoft applications, Fiori interfaces, reporting solutions and services that need controlled access to related entities.
OData is a REST-oriented protocol with defined conventions for metadata, querying, relationships and service behavior. REST gives teams more freedom but fewer shared rules, while GraphQL lets clients shape responses through a different query model and requires a separate schema approach.
An OData specialist should usually understand HTTP, REST principles, relational data modeling and API security. SAP Gateway, SAP S/4HANA, ABAP, ASP.NET Core, Java, databases, OAuth and automated API testing are valuable depending on the project.
The right OData experience depends on the scope. A small service extension may need strong API and data-modeling skills, while an SAP landscape integration also calls for knowledge of Gateway, authorization, transport processes and the consuming Fiori or enterprise applications.
Yes, OData work is well suited to remote collaboration because service contracts, metadata, tests and API documentation can be reviewed online. For teams in Germany, clarify whether meetings require German, English or both, and agree how the specialist will access SAP systems and protected data.
Ask an OData professional to explain an entity model, query restrictions, authorization boundaries and performance risks in a concrete scenario. Review examples of metadata, tests and error handling, and check whether they can protect backward compatibility instead of only producing working endpoints.
An OData service may be a poor fit when the API needs highly specialized commands, streaming workloads or a very small fixed response contract. It is strongest when consumers benefit from standardized querying and metadata; a simpler REST API or another interface may be clearer for narrow use cases.
A strong OData engagement should produce a documented service model, implemented endpoints, authorization rules and tests for filters, expansions, paging and errors. The handover should also cover deployment settings, monitoring guidance, consumer compatibility and any limits placed on expensive queries.
The average hourly rate of freelancers in Germany who have used OData in their recent projects is 101 €, which corresponds to a daily rate of about 806 € based on an 8-hour working day.
Of the freelancers in Germany who have used OData in their recent projects, 80% hold at least a Bachelor's degree, 52% hold at least a Master's degree, and 13% hold a doctorate.
On average, freelancers in Germany who have used OData in their recent projects have 19 years of professional experience, with a single engagement typically lasting around 2 years.
The most common languages among freelancers in Germany who have used OData in their recent projects are German (99%), English (93%), and French (18%).
The most common industries among freelancers in Germany who have used OData in their recent projects are Information Technology (91%), Manufacturing (66%), and Professional Services (58%).
The most common business areas among freelancers in Germany who have used OData in their recent projects are Information Technology (100%), Product Development (78%), and Quality Assurance (63%).
Main locations of FRATCH Experts, who have recently used OData
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.
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Munich Request a free demo
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