ADO.NET Experts in Germany
for reliable data access, matched in minutes with vetted professionalsHire experts who connect .NET applications to relational databases, shape efficient SQL workflows and modernize legacy data layers with ADO.NET, while FRATCH finds a precise match among vetted, available freelancers.
Meet FRATCH Experts in Germany, who have recently used ADO.NET
Johannes O.
Last position:
Co-Developer at fundgarden GmbH
- Work with the Berlin-based fundgarden GmbH (fund.garden), a platform for funding management with a focus on the music sector
- Technologies: PHP 8.3–8.4, Laravel 12, Livewire 2–3, Tailwind CSS, AlpineJS
Dimitrij N.
Last position:
Logistics Designer / Network Designer at Deutsche Bahn Cargo
- Requirements analysis, design, and development of a product for freight logistics (dispatching, planning, timetable and network optimization)
- Documentation of technical focus areas and support with acceptance and integration testing
- DBMS-agnostic modeling and mathematical algorithms for optimization with solver integration (Gurobi, Cplex, Coin-OR)
- Implementation of service layer, automated testing, and integration with third-party systems
Holger K.
Last position:
Data Migration Sage 100 to Odoo at LRT Automotive
- SQL database development, design, documentation of procedures, functions, and triggers
- Migration of data from the Sage Line 100 database to Odoo
- DB design with MS SQL Server and SQL (T-SQL)
- Use of Power Query and Excel
Johannes K.
Last position:
Software Developer at Hoffmann Engineering Services GmbH
- Software development
- Technical design of software architecture and design (considering functional and non-functional requirements)
- Frontend and Backend
- Refactorings
- Code reviews
- Unit tests
- Automated integration tests
- E2E tests
Global Identity Services (GIS) is the identity provider for the Digital Services Platform (DSP). GIS is responsible for authenticating and authorizing end users and other DSP services by issuing security tokens. This includes:
- Identity management (e.g., user registration, password reset and change, user profiles)
- Management of roles and permissions
- Single Sign-On (SSO) across DSP services
- Management of OAuth resources and terms and conditions
Vamsi K.
Last position:
Full Stack .NET Developer at Neusta GmbH
- Implemented and maintained logistics-domain applications using Angular, C#, ASP.NET, HTML5, CSS3, JavaScript, AJAX and Bootstrap
- Analyzed, designed, coded and deployed backend services and integrations using .NET, XML Web Services and RESTful APIs
- Developed automated SSIS packages and scheduled ETL jobs to support data workflows
- Built and maintained Python scripts for automation and prototyping; applied Cursor AI to build/refactor full-stack AI/ML model integrations
- Implemented unit and integration testing (NUnit) and conducted performance tuning for backend services
- Managed source control and CI/CD using GitHub, Azure CI/CD pipelines and TeamCity
Dietmar B.
Last position:
Freelance Developer at Hirschmann/Belden
- Extension of test software for functional testing of IO modules in WPF with MVVM
- Configuration and extension of a specialized WPF control from Nevron
- Connection to Siemens PLCs via Siemens OPC UA Client and Allen-Bradley/Rockwell PLCs via Codebix OPC UA Client
- Integration of various data sources via REST API and JSON
- Development of stored procedures, views, and triggers for PostgreSQL and SQL Server with ADO.NET and Entity Framework 6
Vladimir M.
Last position:
Developer at Financial services provider
- Support and further development of a framework for developing applications in a banking association: DynS/OSPE
- Migration of the framework to Java 11 and Java 17
- Java8, Java11 and Java17, Spring, Spring-Batch, Spring WebServices, Spring-Security, Spring-Data, JPA, Hibernate, OpenSource libraries etc.
- XML, JAXB, JSON, REST and SOAP services, DB2, Oracle, WebSphere or Liberty AS, FreeMaker, Junit, mock libraries, JaCoCo, Maven, IntelliJ, Eclipse, GitHub, SVN, Jira
Oliver H.
Last position:
Orbis Support at Recura Kliniken Beelitz
- Incident handling
- Error analysis
Petru K.
Last position:
Architect & Technical Team Lead & Senior Developer at Goetel GmbH
- Design, architecture & development/programming of ETL/ELT data pipelines, DWH, BI solution
- Technical project lead, POC – proof-of-concept creation
- Liaison between business units and technical teams
- Azure DevOps Boards & Jira
- Data modeling & data engineering – data warehouse & data mart
- Azure (Data Factory, Azure SQL, Azure DevOps CI/CD, Azure Data Lake V2, Business Central REST API, OData API, OAuth2 tokens)
- SharePoint lists & API for ADF, Firebird DB, Postgres DB, DB2
- Power BI (Power Query), DAX, Excel PBI add-on, GIS data
- Automated ETL process monitoring/logging, performance monitoring, error monitoring – capturing & resolution
- Index performance tuning & statistics monitoring, Transact-SQL
- Data security – MFA (multi-factor authentication) & OAuth2, MS Graph, Azure networks & firewalls, gateways, roles, user groups – with read/write permissions
- Sources – Vario Bill, Camunda, Radius, Geo Database, OTRS, PAST, MS Dynamics Business Central, Azure Blob Data Lake, SharePoint lists
Bernhard H.
Last position:
Conversion of external Excel and CSV delivery point lists for internal database interface, architecture at Stadtwerke Heilbronn
- Conversion of external Excel and CSV delivery point lists for internal database interface.
- The utility company receives delivery point lists from external service providers as Excel or CSV files. These lists are not interface-compliant and must be converted before importing into the database. Using Excel, the relevant data from the service providers for electricity and/or gas are prepared.
- Extension of the program with new features.
- Excel programming with VBA.
- Operating system: Windows 2010.
- Software: Excel, VBA.
Christian K.
Last position:
Infrastructure components for computed tomography at Siemens Healthineers CT
- Design and development of components for computed tomography (CT)
- Infrastructure components for computed tomography (CT)
- Components for inter-process communication (WCF)
- Components for analysis of inter-process communication
Michael S.
Last position:
Consultant, Architect, Developer at Self-employed
Thomas A.
Last position:
Managing Director and Shareholder at TGA Systeme GmbH
- Introduction of ERP systems Dynamics XAL, Dynamics AX and Dynamics 365 Finance Operations
- Modules: Production, Project, Service, Procurement, Sales, Logistics
- Development of custom adaptations and industry-specific solutions
- Industries served: Metal manufacturing, Plant engineering, Technical wholesale, Technical building equipment, Vehicle manufacturing and equipment, Waste management and disposal, Furniture manufacturing, Beverage and fresh produce trade, Consumer goods production and distribution, Retail fashion, Children's furniture production, Children's clothing production, Steel trading, Services, Internet providers and portals, Real estate management and development
- Technologies used: MorphX and X++, SysOperationFramework, Enterprise Portal and Web Services, Workflows, SSRS Reports, Services and interfaces (ODATA, SOAP, REST, XML, JSON), Pre- and post-event handlers, Extensions, Team Foundation Server, Azure DevOps, GIT, Confluence, Visual Studio, .NET libraries (ADO.NET, JSON, REST, OData, SOAP, XML), SQL Server and Transact SQL, Microsoft Azure Functions and Pipelines, Power Application Framework
- Deep knowledge in database design with table categories, performance and Azure services
- Team collaboration and source code management via Team Foundation Server, Git and Azure DevOps
- Agile project organization following SCRUM methodology
- Data Science, Machine Learning and Python development tools
- Azure Service Fabric
- Visualization with Power BI
- ERP systems adapted: Axapta 2.5; Microsoft Dynamics AX 3.0, 4.0, 2009, 2012, 2012 R2, 2012 R3; Microsoft Dynamics 365 Finance and Operations
- Integration technologies across projects
Discover over 15,000 top freelancers
Statistics of experts using ADO.NET
Aggregated from the professional profiles of matched freelancers.
Experience
30 years
Position duration
3.2 years
Positions per freelancer
23
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Automotive, Banking and Finance
Certification focus areas
Information Technology, Product Development, Business Intelligence
Bachelor's degree or higher
91%
Master's degree or higher
36%
Doctorate
9%
Certifications per freelancer
1
Most common languages
German, English, French
Speak two or more languages
92%
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 ADO.NET
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.
ADO.NET 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 (54%)
- Banking and Finance (54%)
- Healthcare (54%)
- Manufacturing (54%)
- Transportation (46%)
- Professional Services (38%)
- Government and Administration (38%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
What ADO.NET does
ADO.NET is the data access technology in the .NET ecosystem for connecting applications with relational databases and other structured data sources. It provides providers, connections, commands, readers and data adapters for executing SQL, retrieving records and updating stored data. It supports both direct, fast data access and disconnected work with in-memory data sets.
Core components
The technology separates database communication from application logic through provider-specific classes and common interfaces. SqlConnection, SqlCommand and SqlDataReader are central to direct SQL access, while DataSet and DataTable support disconnected data handling. Professionals also work with transactions, parameters, connection pooling and asynchronous methods to keep data operations safe and responsive.
Where it is used
ADO.NET appears in internal business systems, customer portals, financial applications, reporting services and APIs built on .NET. It remains common in established Microsoft environments where controlled SQL access and predictable database behavior matter.
- Connect .NET applications to SQL Server and other relational databases
- Build repository and data-access layers
- Import, export and transform structured records
- Maintain legacy applications while preparing modernization paths
Ecosystem and tooling
Strong work with ADO.NET includes SQL Server, T-SQL, Microsoft.Data.SqlClient and the broader .NET runtime. Depending on the project, it connects with ASP.NET, Web API, background services, Entity Framework or Dapper. Useful surrounding skills include schema design, indexing, query plans, migrations, dependency injection, testing and secure configuration of connection strings.
When expertise helps
Companies often bring in freelance expertise when a data layer is slow, difficult to test or tightly coupled to business logic. Specialists can replace unsafe string-built queries, introduce parameterized commands, tune transactions and migrate older System.Data.SqlClient code to current provider packages. In Germany, remote collaboration is common, while on-site work can help with regulated systems, complex integrations or legacy estates.
- Diagnose database bottlenecks and connection failures
- Refactor brittle data-access code
- Add reliable transaction and error-handling patterns
- Prepare a measured move toward an ORM or newer .NET architecture
What strong professionals bring
A capable ADO.NET professional understands both application behavior and database internals. They distinguish provider limitations from SQL problems, dispose resources correctly and select readers, data tables or higher-level tools for the actual workload. They document assumptions, protect sensitive data, test failure paths and communicate clearly with teams working remotely or on site.
Frequently asked questions
What clients ask us most about ADO.NET — answered in short.
ADO.NET is used to connect .NET applications to relational databases, execute SQL commands and read or update structured data. It supports direct access through data readers as well as disconnected models using DataSet and DataTable.
ADO.NET offers lower-level control over SQL, connections, commands and result handling. Entity Framework provides object-relational mapping and change tracking, while Dapper adds lightweight mapping; the right choice depends on query control, abstraction needs, performance goals and existing code.
A strong ADO.NET specialist should understand SQL Server, T-SQL, indexing, query plans and transaction design. Experience with ASP.NET, Web API, dependency injection, testing and secure secrets management is also valuable for complete application work.
The required experience depends on the scope and risk of the data layer. A small integration may need focused knowledge of providers and parameterized queries, while a legacy modernization or high-volume system calls for proven database troubleshooting, transaction design and migration planning.
ADO.NET can work with databases beyond SQL Server when a compatible data provider is available. The provider supplies the connection and command implementation, so a specialist should verify feature support, transaction behavior, data types and the maintenance status of the chosen package.
ADO.NET work is often suitable for remote collaboration because code, database scripts, logs and tests can be reviewed online. On-site coordination may still help when access to protected environments, internal networks or regulated operational systems is required; clear technical English or German should be agreed with the team.
Ask how the professional handles parameters, disposal, cancellation, retries, transactions and connection pooling. High-quality ADO.NET work also includes tests for failures and concurrency, understandable SQL, secure configuration and evidence that query performance was measured rather than assumed.
ADO.NET is a good fit when precise SQL control, predictable execution or a small data-access surface matters. An ORM may be more productive for rich domain models and routine CRUD, but direct access can remain the clearer choice for reporting queries, performance-sensitive paths and carefully tuned legacy systems.
The average hourly rate of freelancers in Germany who have used ADO.NET in their recent projects is 86 €, which corresponds to a daily rate of about 689 € based on an 8-hour working day.
Of the freelancers in Germany who have used ADO.NET in their recent projects, 91% hold at least a Bachelor's degree, 36% hold at least a Master's degree, and 9% hold a doctorate.
On average, freelancers in Germany who have used ADO.NET in their recent projects have 30 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 ADO.NET in their recent projects are German (100%), English (92%), and French (23%).
The most common industries among freelancers in Germany who have used ADO.NET in their recent projects are Information Technology (100%), Automotive (54%), and Banking and Finance (54%).
The most common business areas among freelancers in Germany who have used ADO.NET in their recent projects are Information Technology (100%), Product Development (92%), and Quality Assurance (69%).
Main locations of FRATCH Experts, who have recently used ADO.NET
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
