Entity Framework Core Experts in Germany
in minutes from 15,000 CVs with the power of AIHire experts who build clean data access layers, tune EF Core queries, and ship reliable SQL Server or PostgreSQL integrations. They handle migrations, performance issues, and domain models with fast, precise matching from vetted, available freelancers.
Meet FRATCH Experts in Germany, who have recently used Entity Framework Core
Yusuf Congar
Last position:
Senior Software Engineer at LeiKon GmbH
- Development of scalable backend applications with C#/.NET and Java
- Design and implementation of distributed microservice architectures
- Development and integration of REST APIs for industrial applications
- Development of modern web applications with React, Angular, and TypeScript
- Implementation of MQTT-based communication solutions
- Integration of industrial protocols such as OPC UA and Modbus TCP
- Development of batch, process control, and HMI components
- Containerization and deployment of applications with Docker
- Conducting code reviews and supporting architecture decisions
- Close collaboration with product owners, QA, and interdisciplinary teams
- Analysis of business requirements and implementation of technical solutions
- Further development of existing software architectures with a focus on maintainability and performance
Technologies: C#, .NET, ASP.NET Core, Java, C++, React, Angular, TypeScript, Vue.JS, MQTT, OPC UA, Modbus TCP, Docker, GitLab, MariaDB, MySQL, Linux
Oliver Fries
Last position:
Modernization of a multi-company backend system at Energy utility company
Enhancement and modernization of a mature Aspire backend application in the environment of a utility company, focusing on new business requirements, testing, legacy code cleanup, and stable backend delivery.
Core contributions & results Implemented new business requirements in the context of customer orders, subcontractors, and cross-company backend processes, and ensured consistent workflows in a distributed system landscape. Modernized existing backend components step by step and reduced technical debt through targeted legacy code cleanup, refactoring, and structured code reviews. Improved the testability of business-critical services by expanding automated tests with xUnit, AutoFixture, and clearer validation structures. Supported the further development of workflow automations and integration processes via microservices, messaging, and API-based communication. Took over source code from external firms, systematically checked code quality, and derived technical improvements for maintainability, stability, and integration. Worked in agile development processes with Jira, Confluence, and Azure DevOps and supported cross-team alignment on architecture, quality, and implementation. Technical metrics Technologies & methods C#, .NET, ASP.NET, ASP.NET Core, Aspire, Docker, RabbitMQ, gRPC, REST API, Swagger, Microservices, NServiceBus, AutoMapper, Autofac, xUnit, AutoFixture, FluentValidation, Entity Framework Core, MediatR, Redis, Consul, Serilog, SonarQube, Azure DevOps, Azure Monitor, GitLab, Google Protocol Buffers, IronPDF, Mailjet, Jira, Confluence, Miro, agile development, Scrum, code reviews, refactoring, legacy code cleanup, workflow automation, power grids
Oleg Orlov
Last position:
Senior Software Developer / BI Integration Developer Power BI, C# at Telecommunications
Embedded Analytics & AI-assisted BI
Design and development of an integrated analytics solution based on ASP.NET Core, Power BI Embedded, and LLM services to provide contextual business information.
Development of an AI agent with Function/Tool Calling for secure orchestration of REST APIs, SQL data sources, and technical services within defined business processes.
Build-up of automated BI workflows including workspace management, deployment processes, and scheduled refresh via the Power BI REST API.
Implementation of secure service-to-service communication with Microsoft Entra ID and service principal, as well as integration into existing enterprise system landscapes.
Technologies: ASP.NET Core, C#/.NET, Power BI Embedded, Power BI REST API, LLM API, AI Agents, Function/Tool Calling, Entra ID
Giuseppe Abrignani
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
Jorge Nuricumbo
Last position:
Senior Developer at SafeXSmart KI Solutions UG
AI Platform Backend – Senior Developer
Brought in to design and build a backend for an AI platform from scratch, including multi-provider LLM orchestration and real-time infrastructure for AI influencer personas at scale.
Tasks and responsibilities
- Architected and implemented a multi-LLM orchestration layer with Semantic Kernel to integrate GPT-4 and other providers for core platform logic and AI influencer personas, reducing model-switching overhead by abstracting provider APIs behind a single interface.
- Designed and developed a backend from scratch in C# / .NET 10, including domain modeling with DDD, a versioned RESTful API layer, and cloud infrastructure setup on Azure.
- Built a real-time chat infrastructure with Server-Sent Events (SSE), message persistence, and delivery guarantees for live operation of AI influencer personas at scale.
- Developed a media management service with integration of cloud object storage for upload and retrieval of influencer-generated content.
- Created an integration and unit test suite with data seeding for reliable regression testing across all core platform flows, significantly reducing the production error rate.
Tools and technologies: C#, .NET, ASP.NET Core, Python, TypeScript, MySQL, Semantic Kernel, EF Core, Minimal APIs, LLM Orchestration, Prompt Engineering, Agentic AI, Generative AI, AI-Assisted Engineering, Claude Code, GitHub Copilot, Google Gemini, OpenAI API, Ollama, Redis, Azure, Azure Container Apps, Azure Database for MySQL, Docker, GitHub Actions, Clean Architecture, Vertical Slice Architecture, CQRS, Domain-Driven Design, REST API, xUnit, Integration Testing, Unit Testing, Jira, Confluence, Scrum
Dilip Kumar Jena
Last position:
.NET Technical Lead & Application Architect at Hays AG
- Devised a new Domain-Driven Design architecture for a core system: reverse-engineered a central component, refactored the data-access layer to minimise database round-trips (improving scalability) and migrated processing to async.
- Decomposed the platform into independent .NET Core microservices (database-per-service) with RabbitMQ pub/sub using the Outbox Pattern + Saga choreography, behind an Ocelot API Gateway (JWT, rate limiting, CORS, health checks).
- Delivered on .NET Core / Angular / SQL Server / EF Core with Docker and Azure DevOps CI/CD; implemented health checks and CORS; contributes technical designs for stories in agile Scrum.
- Sole ADR owner; mentored 3 engineers and presented architecture decisions directly to the Director of Corporate IT.
Rizwan Bashir
Last position:
Software Developer/Database/DevOps at Sutor Bank
- Migration and maintenance of a legacy system to the latest version of .NET for the asset management system
- Design and implementation of tests
- Creation of deployment pipelines and documentation
- Further development and implementation of change requests
- Technologies: C#, ASP.NET, Unit of Work, IOC, Three tier architecture, Entity Framework Core, DB First, Web API, Swagger, Open API, Monolith, Python, Oracle, Azure DevOps, GIT, xUnit, NSubstitute
- Methods: Agile development using Scrum
Reginald Leonczuk
Last position:
ERP System Redesign (web-based)
PHP and React redesign of a web-based ERP system.
- Development of the header and parts of the navigation
- Development of various modules in React, e.g. calendar, chat, and various tables
Moritz Freyburger
Last position:
AWS Developer/DevOps Engineer (Energy Trading) at RWE Supply & Trading GmbH
- Further development and partial new development of a distributed cloud application for providing data in energy trading
- Independent implementation of the infrastructure (IaC)
- Creation of automated CI/CD pipelines, containers, REST APIs, and Lambdas
- Continuous cost and performance optimization
- Collaboration in an international Scrum team and with experts in energy trading
- Technologies: C#/ASP.NET Core; EF Core; PostgreSQL; Terraform/AWS CloudFormation; HTTP; REST/Web API; Swagger/OpenAPI; Azure DevOps; Rider; VS Code; git; Docker; AWS (S3, EC2, Fargate, Lambda, Step Functions, Secrets Manager, VPCs, ALB/NLB, RDS, Cloudwatch, AWS CLI, Amazon MQ); Redis; OAuth; OpenID Connect
- Languages: C#; TypeScript; HCL; Docker; Bash; PowerShell; YML; JSON
Michael Salzig
Last position:
Senior Software / Full-Stack Developer at DOUGLAS INFORMATIK & SERVICE GmbH
- data integration for SAP marketing applications Emarsys and SMC
- processing data from SAP applications for email delivery
- event-driven architecture with around 50 microservices for processing several million messages per day during high season
- development of a marketing campaign management tool (frontend Angular, backend C# ASP Web API)
- support for the Product Owner in communication with stakeholders and creation of epics, stories, and tasks
Hicham Mokhtari
Last position:
Freelance Software Developer at Buhl Data Service GmbH
- Backend development: .Net 8, C#, PostgreSQL, Entity Framework Core, REST Web APIs, Docker, Kubernetes, Kafka, Open API Swagger, Apache Airflow, Resharper, Git, Microservices, SOAP, gRPC, Hangfire, OAuth 2, GraphQL
- Interface development for document processing with SmartFix, Softexpansion and Natif.ai: C#, REST API, Resharper, Git
- Deployment: Azure DevOps YAML, Vanilla Helmchart, Rancher, Kubernetes Cluster, Linux Docker, Windows VM, Python
- Unit tests and integration tests
- Telemetry, Kibana, Grafana, Elastic Search
- Work in a Kanban team of 8 developers, 1 tester and one Product Owner
Dimitrij Neumann
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 Klink
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
Thomas Grevenkamp
Last position:
Senior .NET / Cloud Engineer at Freelance
Building an observability and alerting solution for Business Central Job Queue monitoring
- Built a central monitoring solution to track the Business Central Job Queue in a multi-organization environment in Azure DevOps
- Integrated Azure Application Insights and Log Analytics for structured collection and analysis of job runtimes and error events
- Developed KQL queries for targeted analysis of failed jobs and detection of error patterns
- Connected Grafana and Power BI to visualize operational metrics and job status in real time
- Implemented an automated alerting workflow with Power Automate – when a job fails, a notification email is sent immediately
- Ensured transparency about the state of productive background processes during live operations
Result: Full transparency over failed Business Central jobs · Clear reduction in response time through automated email alerting · Stable foundation for proactive operation of productive background processes
Technologies: Azure DevOps | Application Insights | Log Analytics | KQL | Grafana | Power Automate | Power BI | Business Central | Azure Monitor
Alois Flammensböck
Last position:
Software Architect / Backend Developer at GEO API
- Design and implementation of a Laravel backend API for provider-based geo search, feature details, boundary geometries and neighborhood detection.
- The API serves as a server-side proxy, cache and enrichment layer, protecting credentials for external geo services and persisting features, localizations, geometries, hierarchies and neighborhood relationships in MariaDB.
- Key areas included normalization of autocomplete and feature data, caching strategies for expensive boundary/polygon requests, spatial processing of GeoJSON and MultiPolygon geometries, as well as neighborhood detection using hierarchies, bounding box filters and topology checks.
- Additionally, separate production and diagnostic endpoints were created, along with status and error catalogs, discovery logging, a Docker development stack, API documentation, and unit and feature tests.
- Technologies: PHP 8.3, Laravel, REST API, geo data API, GeoJSON, MariaDB Spatial, Eloquent, Laravel Queues, PHPUnit, Mockery, Docker, Docker Compose, API design, geocoding, boundary data, spatial queries.
Discover over 15,000 top freelancers
Statistics of experts using Entity Framework Core
Aggregated from the professional profiles of matched freelancers.
Experience
17 years
Position duration
2 years
Positions per freelancer
14
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Manufacturing, Transportation
Certification focus areas
Information Technology, Product Development, Project Management
Bachelor's degree or higher
85%
Master's degree or higher
42%
Doctorate
4%
Certifications per freelancer
1
Most common languages
German, English, Spanish
Speak two or more languages
95%
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 Entity Framework Core
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 is
Entity Framework Core, often called EF Core, is Microsoft’s ORM for .NET. It maps objects to relational databases so teams can work with data through C# instead of raw SQL everywhere. It is used for business apps, APIs, internal tools, and systems that need clean data access.
Typical work
- Data access layers for ASP.NET Core services
- Schema changes through migrations
- Query optimization and change tracking tuning
- Integration with SQL Server, PostgreSQL, MySQL, or SQLite
- Refactoring legacy Entity Framework code to EF Core
Ecosystem
EF Core sits inside the wider .NET stack and works closely with ASP.NET Core, LINQ, dependency injection, and logging. Strong specialists understand database design, indexes, transactions, and how queries are translated. They also know when to use raw SQL for edge cases.
When to bring in help
Bring in freelance expertise when a project slows down on data access, upgrades from older Entity Framework versions, or needs a safer migration path. This is common in Germany for enterprise software, SaaS products, and line-of-business systems that must keep running while the schema changes.
What strong experts do
Strong professionals keep the model simple and the queries predictable. They spot N+1 problems, define sensible relationships, and make migrations safe to review and roll back.
- Design entities and DbContext structure
- Balance ORM convenience with performance
- Troubleshoot translation, tracking, and concurrency issues
- Align code with database rules and team standards
Delivery and collaboration
EF Core work often fits well with remote collaboration because the main outputs are code, migrations, tests, and review notes. On-site work can help during large legacy migrations or when a Germany-based team needs close coordination with product and operations. Good freelancers communicate clearly with developers, testers, and database specialists.
Frequently asked questions
Not sure where to start with Entity Framework Core? These answers cover the essentials.
Entity Framework Core is used to connect .NET applications to relational databases through an ORM layer. Teams use it for CRUD flows, reporting queries, migrations, and domain-driven application code in web apps and internal systems. It reduces boilerplate while still allowing direct SQL when needed.
EF Core is the newer Microsoft ORM for modern .NET. It is cross-platform, more actively developed, and built around current .NET features, while Entity Framework 6 is the older line with a different runtime model. The right choice depends on the application’s framework version and migration needs.
A strong Entity Framework Core specialist knows when the ORM is the right tool and when raw SQL is safer or faster. Complex reporting, very specific database features, or heavily tuned queries may need direct SQL. Good practice is often a mix: ORM for most code, SQL for the critical edge cases.
Entity Framework Core is commonly paired with SQL Server, PostgreSQL, MySQL, and SQLite. The exact setup depends on the product, hosting model, and the database features the team needs. A freelancer should know the provider details, not just the generic ORM APIs.
A strong EF Core freelancer should also understand C#, LINQ, ASP.NET Core, database indexing, and transaction handling. Testing, performance analysis, and migration planning matter too. For larger systems, knowledge of repository patterns, clean architecture, and legacy refactoring is useful.
A solid Entity Framework Core specialist can start with the domain model, database schema, and a few example queries. The more complex the system, the more they need around business rules, performance constraints, and deployment setup. For migration work, access to the current and target schema is essential.
Yes, Entity Framework Core work is often a good fit for remote delivery because most tasks are code-based and reviewable. In Germany, many teams still prefer clear written updates and careful handover notes, especially for migrations and release windows. On-site time is most useful when legacy systems or cross-team coordination are involved.
Look for clean entity design, safe migrations, and queries that are easy to reason about. A strong Entity Framework Core professional explains trade-offs, avoids hidden performance problems, and writes tests around data behavior. Their work should leave the database and the codebase easier to maintain, not more fragile.
The average hourly rate of freelancers in Germany who have used Entity Framework Core in their recent projects is 92 €, which corresponds to a daily rate of about 738 € based on an 8-hour working day.
Of the freelancers in Germany who have used Entity Framework Core in their recent projects, 85% hold at least a Bachelor's degree, 42% hold at least a Master's degree, and 4% hold a doctorate.
On average, freelancers in Germany who have used Entity Framework Core in their recent projects have 17 years of professional experience, with a single engagement typically lasting around 2 years.
The most common languages among freelancers in Germany who have used Entity Framework Core in their recent projects are German (97%), English (95%), and Spanish (8%).
The most common industries among freelancers in Germany who have used Entity Framework Core in their recent projects are Information Technology (95%), Manufacturing (62%), and Transportation (49%).
The most common business areas among freelancers in Germany who have used Entity Framework Core in their recent projects are Information Technology (100%), Product Development (100%), and Quality Assurance (68%).
Main locations of FRATCH Experts, who have recently used Entity Framework Core
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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FRATCH CEO
