Entity Framework Core Expert in Germany
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Meet FRATCH Experts in Germany, who have recently used Entity Framework Core
Yusuf C.
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
Oleg O.
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 context-based business information.
Development of an AI agent with Function/Tool Calling for the secure orchestration of REST APIs, SQL data sources, and technical services within defined business processes.
Building 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, and 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
Jorge N.
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
- Architecture and implementation of 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.
- Design and development of 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 production error rates.
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
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
Rizwan B.
Last position:
Software Developer/Database/Devops at Sutor Bank
Project:
- Migration of existing VB6 applications to C# (Web API, web app)
- Report development and risk management systems (C#, API interfaces, databases)
- Document archive (API interfaces, databases)
Team size: 9 people
- Reports for Risk and Credit Management Development and maintenance of report structures to support risk and credit decisions, including data modeling, validation, and automated delivery for business departments.
- Migration and maintenance of a legacy system to the latest version of .NET for the asset management system Planning and execution of the modernization of an existing asset management system, including code refactoring, performance optimization, test automation, and sustainable maintenance after migration.
- Replacement of the COM-based archive connection with a REST API Redevelopment of the connection of the document archive (HYPARCHIV) to a REST API based on OpenAPI/Swagger, including archiving with index and stamp fields as well as PDF export into the customer portal.
- Redesign of payment receipt processing Replacement of an existing Oracle PL/SQL process with a new implementation in C# based on a business concept, including business alignment, data modeling, and test coverage.
- Design and implementation of tests, creation of deployment pipelines, and documentation
- Further development and implementation of change requests.
- Regular code reviews within the team as well as optimization of application scalability and stability
Technologies: C#, .NET 10, ASP.NET, Unit of Work, IoC, Three-Tier Architecture, Entity Framework Core, DB First, Web API, Swagger, OpenAPI, Python, Oracle, HYPARCHIV, Azure, PowerBI, DevOps, AKS (Azure Kubernetes Service), GIT, xUnit, NSubstitute, TypeScript, Vue.js, Pinia,
Methods: agile development using Scrum
Dilip K.
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.
Reginald L.
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
Oliver F.
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
Igor F.
Last position:
Lead Frontend Developer at Amcon Software GmbH
Technical leadership in the implementation of accessible frontend components with React and MUI
Analysis and refactoring of existing UI structures with regard to semantic HTML usage, ARIA roles, and keyboard navigation
Integration and use of accessibility testing tools such as Axe and Lighthouse
Close coordination with UI/UX design, backend development, and QA to ensure a consistent a11y-compliant user experience
Advising the client on implementing legal requirements according to BITV 2.0 / EU Directive 2016/2102
Improved the Lighthouse Accessibility Score from 55 to 98
Long-term improvement of the codebase through the introduction of reusable, accessible components
Positive client feedback and follow-up work for future a11y projects
Tools and technologies: React, MUI, TypeScript, JavaScript, HTML5, CSS3, Node.js, WCAG 2.1 AA, Axe, Lighthouse, SCRUM, Agile, Jira, Bitbucket
Andreas G.
Last position:
Senior Fullstack .NET (Core) & Angular Developer at IT Service Provider
- Supporting several agile teams in the new product development of an enterprise CRM and ERP application
- Web frontend development with Angular 17–21 (microfrontends, Domain-Driven Design, MDB-Bootstrap)
- Backend development with C# and .NET 7–10, MongoDB, MassTransit, RabbitMQ, Entity Framework Core, ElasticSearch (microservices, DDD)
- Technical feature design for assigned tasks
- Technical architecture design including forward-looking planning of AI-supported extension options
- Proof-of-concept implementation of AI-supported workflows with n8n and a locally hosted LLM (Ollama)
- Coordination with stakeholders and Product Owners, support with sprint planning
Result: Delivery of production-ready microservices and frontend modules in agile sprint cycles.
Environment: .NET 7–10 · Angular 17–21 · C# · TypeScript · OpenAPI · Microfrontends · DDD · Kubernetes · Docker · Helm · MS SQL Server · PostgreSQL · MongoDB · MassTransit · RabbitMQ · EF Core · ElasticSearch · Kibana · Azure DevOps · KeyCloak · n8n · Ollama
Moritz F.
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 S.
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
Muhammed D.
Last position:
Software Engineer at The.NextGen GmbH
- Created internal web application to improve the salary process using a microservice interfacing with MSSQL
- Developed interactive web UI using Microsoft Blazor
- Integrated Azure AD for user authentication
- Designed and implemented roles and permissions in the database
- Developed progress page guiding users through each process step
- Processed bonus calculations by importing Excel files
- Configured email notifications using MSSQL Send Mail
- Tools and technologies: C#, ASP.NET 6, MS-SQL, REST API, Visual Studio 2022, TFS, microservices, Kanban Board, Azure DevOps
Hicham M.
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 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
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 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 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 19 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
Entity Framework Core 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 (95%)
- Manufacturing (62%)
- Transportation (51%)
- Healthcare (46%)
- Banking and Finance (41%)
- Energy (38%)
- Automotive (32%)
- Government and Administration (32%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Modern Data Access in the .NET Ecosystem
Entity Framework Core is Microsoft's open-source, lightweight object-relational mapper for .NET. Commonly referred to as EF Core, it bridges domain code with relational and non-relational database engines. It provides automated schema tracking, object-relational mapping, and database migrations for modern cloud applications.
Core Engineering Capabilities
- Schema modeling with fluent API and data annotations
- LINQ query compilation and change tracking optimization
- Zero-downtime database migrations in CI/CD pipelines
- Multi-tenancy setups and temporal table integrations
- Split queries and raw SQL execution for high-throughput paths
Integration with Enterprise Architectures
Specialists implement EF Core alongside ASP.NET Core web APIs, microservices architectures, and event-driven backends. They frequently integrate database providers for SQL Server, PostgreSQL via Npgsql, and SQLite. Strong professionals also know when to bypass the ORM with tools like Dapper for intensive batch processing jobs.
Signs Your Project Requires External Support
- Unintentional N+1 query patterns causing database bottlenecks
- Memory leaks stemming from unchecked entity change tracking
- Complex legacy migrations failing between staging and production
- Concurrency issues and transaction deadlocks under heavy load
Industry Adoption Across Germany
Organizations across Germany rely heavily on the Microsoft stack for enterprise platforms, automotive telematics, and financial backends. Projects in the region often require professionals who navigate strict data protection rules, hybrid cloud deployments with Azure Germany, and bilingual English and German engineering teams.
Profile of a Strong Specialist
Top specialists understand the SQL generated behind LINQ expressions. They profile execution plans, design robust indexing strategies, and configure query splitting to avoid Cartesian explosions. Their work ensures database interactions remain maintainable without sacrificing execution speed or transactional integrity.
Frequently asked questions
Not sure where to start with Entity Framework Core? These answers cover the essentials.
Teams use Entity Framework Core as an object-relational mapper to translate C# domain classes into database structures and LINQ queries into SQL. It automates repetitive CRUD operations, manages schema changes over time through code-first migrations, and handles relationship mapping between disparate tables.
While EF Core automates change tracking, complex relationship mapping, and migrations, Dapper operates as a thin mapper focused on raw query performance. Many mature .NET solutions combine both, using Entity Framework Core for transactional business workflows and micro-ORMs for latency-critical reporting queries.
A strong EF Core specialist brings deep proficiency in C#, ASP.NET Core, and relational engines such as PostgreSQL or Microsoft SQL Server. They must understand query execution plans, database indexing, connection pooling, and how to write asynchronous database operations properly.
Companies hire freelance professionals when unoptimized LINQ queries trigger severe performance issues or when updating from legacy Entity Framework 6 to modern .NET versions. External specialists audit the data access layer, eliminate memory overhead from tracking contexts, and establish zero-downtime migration pipelines.
Evaluate how well they diagnose query generation issues using tools like SQL Server Profiler or OpenTelemetry logging. A capable Entity Framework Core professional readily explains how split queries prevent Cartesian explosions, when to apply AsNoTracking, and how to structure context lifetimes in dependency injection.
Upgrading to modern EF Core involves structural updates because the underlying mapping and query generation engines were completely rewritten. Experienced professionals manage this transition by decoupling business logic from entity models and migrating schemas incrementally to avoid system downtime.
Most Entity Framework Core specialists based in Germany collaborate remotely with distributed development teams using Agile workflows. For enterprise projects requiring initial data modeling workshops or compliance alignment, these professionals can integrate on-site when requested.
German enterprises frequently look for EF Core specialists who can communicate fluently in English for codebases and pull requests, while German language skills are preferred when liaising directly with internal stakeholders and enterprise architecture boards.
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 (11%).
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 (51%).
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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