OData Experts in Berlin
to connect business data with vetted, available freelancers matched in minutesHire experts who design OData services, model entities and expose secure APIs across SAP, Microsoft and custom business systems. Work with vetted, available freelancers selected through fast, precise AI matching for your Berlin-based project.
Meet FRATCH Experts in Berlin, who have recently used OData
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.
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
Matthias O.
Last position:
Freelance work at Etengo (für Syna AG)
Consulting in the SAP EAM module as part of the migration to EON's S/4 HANA oneERP system
Review and cost estimation of customer-specific developments (e.g. cockpit for EAM orders, document flow display)
Preparation of EAM classification data for technical objects (functional locations, equipment) for migration to new classes
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
Heiko K.
Last position:
SAP development, Adobe form development at Arvato SE
- conversion of a function-group-based Adobe Interactive Forms framework to an object-oriented Adobe framework for documents in transport/logistics and dunning (FI)
- Adobe Lifecycle Designer 11.0.1 for SAP
- creating new and troubleshooting existing forms, function modules, programs, classes, and methods
- maintaining Smart Forms
- document printing, email sending, and file archiving
- message control for deliveries, orders, invoices, proforma invoices, and transports
- ticket system: Jira
- communication: Microsoft Teams
- migrating customers to a new SAP framework
- handling incident and change request tickets
- software: SAP ERP 6.0, SAP_ABA 7.5G, S4CORE 1.05
Beserithan M.
Last position:
SD Development and CRM Interaction Center Development at Sanner GmbH
- Part-time 2-3 days/week
- Developments in the SD module and CRM Interaction Center
- Consulting, customizing in SD module
- Adapting Fiori applications in the SD module
- Approval workflow for credit memos: design, concept, implementation, customizing
- Credit memo request: object type BUS 2094
- If the credit memo request value is below a certain threshold -> automatic release and removal of billing block
- If the credit memo request value is above a certain threshold -> automatic determination of the responsible employee
- The employee receives a work item in their integrated inbox or in My Inbox (Fiori) -> the employee can reject, approve, or edit the credit memo request
- UML modeling in technical documentation
- Creating a Z-table for customer sample line items
- Merging COA1 (delivery) + COA2 (CAQ) forms and adding to the spool request as a single PDF
- Correcting workflow title according to NACE, fixing message "ZBMA title is displayed incorrectly in SBWP (Workplace)"
- Receiving PLM documents from an external PLM system, creating an RFC function module, storing PLM documents in the material master as GOS objects
- On releasing a production order, reading PLM documents from MM and saving them in a shared folder for the MES system
- Displaying the number of inspection methods in a popup when creating an order -> VA01/VA02
- Automatic stock reconciliation LVS IDOC INVCON
- Performing AQUA tests
- IDOC archiving for old IDOCs
- NL_PM_drawings and storing print output, informing MES via ZPPORDER IDOC, writing technical documents
- Using SD user exits, BADIs for various requirements
- Extending screens for customer requests via screen exits
- Creating message types for sales orders, purchase orders, and invoices
- Extending CRM Interaction Center Business Partner -> Overview -> Contract with customer-specific requirements
- New Fiori application departure control with data from Z-table and standard equipment tables, displaying a pie chart, calculating "vehicles in operation"
- Extending Interaction Center Business Partner -> Overview -> new tab on Overview Page with list tables for performance feedback, attachments from GOS objects
- Extending Interaction Center Business Partner -> Overview -> new tab on Overview Page with list tables for PM quality notifications, attachments from GOS objects
- Implementing BADIs in CRM
- File storage on SAP server/UNIX server
- Using BOL/GENIL architecture in CRM development
- Project language: German
Gopal K.
Last position:
SAP ABAP & Cloud Architect at parasus GmbH
- Concept and re-implementation of customer application over cloud and make the source code cloud ready
- Re-designing and putting a new architecture to overcome all the Team Scale findings and push ABAP code to ABAP cloud
- Converted the existing custom application code to ABAP cloud code and used ABAP Clean code guidelines
- Create a dynamic framework to call old vs new implementation from a Table maintenance to validate both implementations
- Utilized Key User Extensibility to seamlessly integrate multiple custom fields into a standard Fiori application, enhancing both the front-end and back-end GUI
Discover over 15,000 top freelancers
Statistics of experts using OData
Aggregated from the professional profiles of matched freelancers.
Experience
24 years (Germany: 19 years)
Position duration
1.4 years (Germany: 2.1 years)
Positions per freelancer
30 (Germany: 17)
Top business areas
Information Technology, Product Development, Supply Chain Management
Top industries
Information Technology, Manufacturing, Professional Services
Certification focus areas
Information Technology, Project Management, Procurement
Bachelor's degree or higher
100% (Germany: 81%)
Master's degree or higher
83% (Germany: 51%)
Doctorate
33% (Germany: 13%)
Certifications per freelancer
2 (Germany: 3)
Most common languages
German, English, Russian
Speak two or more languages
100% (Germany: 94%)
Based on our profile pool as of 29 Oct 2026.
Daily rate distribution
The chart shows how the daily rates of experts in this technology in Berlin are distributed, based on recent contracts on our platform. Each bar covers a rate range — its height shows the share of experts charging within that range.
Average rates of experts in Berlin 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 29 Oct 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 (100%)
- Manufacturing (86%)
- Professional Services (86%)
- Automotive (71%)
- Banking and Finance (71%)
- Healthcare (71%)
- Transportation (57%)
- Utilities (57%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
OData in practice
OData, short for Open Data Protocol, is a standard for exposing and consuming structured data through web APIs. It uses familiar HTTP operations, resource-based URLs and query options for filtering, sorting, selecting and expanding data. Companies use it to connect business applications, reporting tools, portals and mobile services without creating a separate interface for every consumer.
Services and data models
OData services describe business entities and the relationships between them through metadata. Strong implementations define clear entity sets, keys, navigation properties and data types before exposing them to clients. Specialists also manage pagination, versioning, validation and consistent error responses so that integrations remain predictable as systems change.
- Design entity models and service metadata
- Expose filtered, paged and expandable resources
- Connect ERP, CRM and operational data
- Document endpoints for internal and external consumers
Ecosystem and tooling
OData appears in SAP Gateway and SAP S/4HANA integrations, Microsoft services and custom applications built with .NET, Java or Node.js. Professionals may work with OData libraries, service frameworks, API gateways, identity providers and client tools such as Power BI. They need to understand both the protocol and the source system behind each service.
When specialists help
Companies bring in freelance OData expertise when an API must expose complex business data, an existing service is slow or inconsistent, or an integration needs to support several consumers. Berlin teams may need local collaboration for workshops while keeping implementation remote. Clear communication in English, and German where required, helps align business and technical stakeholders.
- Replace fragile point-to-point integrations
- Extend SAP or Microsoft data access safely
- Resolve query, authorization or metadata issues
- Prepare services for analytics and applications
Security and performance
Reliable OData services apply authentication, authorization and input controls at the service boundary. Specialists review which entities and fields each consumer may access, then test query complexity, response size, caching and database behavior. They also protect against excessive expansion, unauthorized filtering and accidental exposure of sensitive business data.
What strong professionals deliver
The right professional can trace a request from a client query through the OData service to the underlying system and back. They explain trade-offs between broad flexible access and tightly defined endpoints, and they test both valid and abusive requests. Look for experience with metadata-driven clients, API lifecycle management, automated tests and the specific SAP, Microsoft or custom environment involved.
Frequently asked questions
Key details about OData, drawn from the questions we get asked most.
OData is used to expose structured business data through standard web APIs. It is common for ERP, CRM, analytics, portals and mobile applications that need filtering, sorting, paging or related records without custom endpoints for every query.
OData follows REST principles but adds a defined query language, metadata format and conventions for entities and relationships. GraphQL offers client-defined fields through a different schema model, while a plain REST API leaves more of the query behavior and documentation to the implementation.
OData work often requires knowledge of HTTP, JSON, XML, API security and database behavior. Depending on the system, useful adjacent skills include SAP Gateway, ABAP, S/4HANA, Microsoft .NET, Power BI, OAuth and API gateway configuration.
OData expertise should match the system risk and data complexity, not a fixed time period. A simple internal service may need a specialist who can model entities and configure access, while SAP integrations or externally exposed APIs call for proven work with security, performance and lifecycle concerns.
OData projects can usually be delivered remotely when repositories, environments and test data are accessible. On-site workshops in Berlin can still help when teams must map business processes, clarify SAP ownership or agree on data access with several departments.
OData quality is visible in consistent metadata, clear entity relationships, useful errors and predictable query behavior. Ask for evidence of automated tests, authorization checks, pagination, performance testing and documentation that a client team can use without relying on the original specialist.
Microsoft OData refers to Microsoft's implementations, libraries and related tooling around the Open Data Protocol. The underlying conventions are broader than Microsoft products, so a specialist should explain which version, framework and service components a project actually uses.
OData services often slow down when flexible queries trigger expensive joins, unrestricted expansions or large unpaged responses. A capable specialist traces requests to the data source, restricts costly operations where needed and improves indexing, caching, serialization or service design.
The average hourly rate of freelancers in Berlin, Germany who have used OData in their recent projects is 98 €, which corresponds to a daily rate of about 783 € based on an 8-hour working day.
Of the freelancers in Berlin, Germany who have used OData in their recent projects, 100% hold at least a Bachelor's degree, 83% hold at least a Master's degree, and 33% hold a doctorate.
On average, freelancers in Berlin, Germany who have used OData in their recent projects have 24 years of professional experience, with a single engagement typically lasting around 1.4 years.
The most common languages among freelancers in Berlin, Germany who have used OData in their recent projects are German (100%), English (100%), and Russian (14%).
The most common industries among freelancers in Berlin, Germany who have used OData in their recent projects are Information Technology (100%), Manufacturing (86%), and Professional Services (86%).
The most common business areas among freelancers in Berlin, Germany who have used OData in their recent projects are Information Technology (100%), Product Development (86%), and Supply Chain Management (86%).
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.
Berlin 
Hamburg Munich Cologne Frankfurt Stuttgart Dusseldorf Leipzig Dortmund Essen Bremen Dresden Hanover Nuremberg 
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Philipp Thomaschewski
FRATCH CEO
