.NET Core Experts
to build reliable services, APIs and cloud applications with vetted, available freelancers matched by AIHire experts who create scalable web APIs, distributed services and enterprise applications with .NET Core, ASP.NET Core, Entity Framework Core and Azure integrations. FRATCH connects you with vetted, available freelancers through fast, precise AI matching.
Meet FRATCH Experts who have recently used .NET Core
Lutz E.
Last position:
Freelance Software Developer – GoPro MultiCam Control via COHN at Plutos Company UG
- Developed a pilot system to control and monitor multiple GoPro cameras
- Implemented start, stop, status, media, download and diagnostic functions via COHN endpoints
- Built camera detection, individual and group control, and stable session/KeepAlive logic
- Set up a download pipeline with a queue, retry handling and temporary files
- Ensured consistent session, folder and file naming for multicamera recordings
- Integrated provisioning, certificates and network operations
Jörg T.
Last position:
Consultant, Requirements Engineer and Database Expert
Project – Evaluation and development of databases for a new product line for a measuring equipment manufacturer
- Current-state analysis
- Requirements analysis of the data storage layer
- Writing benchmark tests
- Design of the new database schema
- Database migrations
- Development of audit logging and Part11
- Creation of backup and recovery concepts
- Design of the persistence layer API
- Writing unit tests
- Creating requirements in Azure
Tools: C#, Visual Studio 2022, Azure DevOps, SonarQube, Git, RestSharp, WebServer, PostgreSQL, MS SQL, SQLite, MinIO, Podman, Docker, DataGrip, SQL Management Studio, HeidiDB, pgAdmin
Karen M.
Last position:
Personal AI Engineering Project — Croky AI at Crocky AI
Product:
- Built a production-ready AI platform for generating brand-aware marketing images and videos from product data, user requirements, and uploaded media.
- Own the platform architecture, technical roadmap, API design, security, deployment workflow, operational reliability, and model-provider strategy.
- Developed the core platform in .NET and built supporting AI and workflow prototypes in Python, applying language-independent API contracts and structured interfaces between services and model providers.
- Implemented reliable background processing with RabbitMQ, persisted workflow state, idempotent handling, retries, failure recovery, logging, secure storage, authorization, and credit accounting.
- Made pragmatic build-versus-buy and model-routing decisions based on reliability, latency, cost, and maintainability rather than novelty.
Agent Orchestration & RAG Systems
- Built and compared agent workflows using Microsoft Agent Framework, LangGraph, and LangChain, including tool use, conditional routing, clarification steps, state management, and hand-offs between agents.
- Implemented reusable .NET components for agents, prompts, tools, model providers, structured responses, and retrieval with pyvector, making it easier to change AI providers without rewriting the core workflow.
Vicenco K.
Last position:
Process and consulting services for a public-sector client in the field of internal security
- Standardization and further development
- Application monitoring
- Incident handling
- Change management
- Interface and integration operations
- Testing, acceptance and transition to operations
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
Frank S.
Last position:
Skat Pro at Spiele Palast
Skat Pro
Redesign and modernization of an existing game application for various clients (web and mobile)
Technologies:
- Unity 3D
- C#
- .Net
- WebGL
- Android
- iOS
Saqib J.
Last position:
AI Developer / AI Engineer (Lead) at KOM4TEC GmbH
- Designed and implemented modular AI assistants for sales and business processes within the Microsoft ecosystem (Agentic AI, Copilot extensions)
- Frontend architecture and development with React + TypeScript for embedded chat and assistant surfaces (streaming UI, Hooks, React Query, OpenAPI clients)
- Enterprise-level agent development: reusable skill/agent library, MCP servers, review and compliance gates
- LLM integration into the user experience: Anthropic (Claude), OpenAI, tool use, RAG pipelines, prompt engineering, guardrails
- Architecture and code review consulting, and mentoring within the AI development team
- Integration with Microsoft Graph, Power Platform, and Azure services
- Technologies: React, TypeScript, Anthropic Claude, OpenAI, MCP, RAG, Microsoft Graph, Power Platform, Azure
Sergej G.
Last position:
IT Consultant and Software Developer at Görzen Consulting
- End-to-end ownership of client projects, from requirements to rollout
- CTO of Edumix, a platform for interactive learning content (not yet released)
- CTO of a B2B AR app with indoor navigation and a digital twin (Matterport)
- OnePortrait: migration from Node.js/Nuxt to React, Next.js and Go
- Interactive Three.js mosaic featuring thousands of images
- Daily use of AI tools and coding agents (agentic coding)
Technologies: React, Next.js, Go, Node.js, Unity (Editor Extensions, UaaL), Flutter, iOS, .NET MAUI, Supabase/PostgreSQL, Three.js
Projects: Edumix, AR Indoor Service App, OnePortrait
Giuseppe A.
Last position:
Embedded Software Development at Inheco
- AI Integration (LLM & RAG): Designed and built an internal intelligent RAG system (Retrieval-Augmented Generation) based on LLMs, n8n, and vector data to automatically analyze technical documents and error logs.
- Design & Implementation: Designed a robust RS-232/UART communication interface for an SBC-based embedded device used to control medical shaker systems.
- Architecture & Protocol Design: Built a highly maintainable software structure (OOP, SOLID) and defined resilient, hardware-level communication protocols, including multithreading and advanced error handling.
- Quality Assurance & DevOps: Automated testing with xUnit, ran integration tests directly on the hardware target, and maintained technical documentation 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
Timo T.
Last position:
Gronic Ident & Sign at Gronic Systems GmbH
Gronic Ident & Sign
Core technologies: Android, Jetpack Compose, Retrofit, Regula Document Reader, Adobe Sign
Android app on dedicated devices for identifications and electronic signatures at the PoS
Andre F.
Last position:
.NET Consultant (Fullstack) at AFri Consulting
Software development with C#
IT infrastructure development and maintenance with Microsoft Azure
Integration of 3rd-party systems
Planning and setting up DevOps CI/CD processes
C# (.net8)
Azure Cloud Services
DevOps
Jira
Dynamics
Odata
Api Management
Key Vaults
ServiceBus
Azure Functions
Blazor
Yasin Y.
Last position:
Enterprise Architect at Bundesagentur für Arbeit
Task:
- Design and build a proof of concept (PoC) for a future-proof virtualization platform, taking secure system architectures into account
- Assess the current state of existing infrastructures and develop selection and evaluation criteria for the right OS virtualization platform
- Carry out the requirements analysis and then create and prioritize tickets in the ticket system
- Complete and continuously update a tool evaluation matrix based on PoC results
- Support team knowledge building through clear documentation of the approach and results in Confluence
- Enterprise analysis of existing hardware (creating different BoMs)
Technologies: Vmware, Vmware Aria Operations, Osism, Canonical OpenStack, FishOs, Linux, Terraform, Ansible, Confluence, Alma
Tamás E.
Last position:
Senior Software Developer / Tech Lead at NDA (defense / OSINT)
- Designing the audit logging framework
- Implementing APIs for developers to integrate in their codebase
- Implementing ingestion pipeline, database query layer and UI for browsing the audit events
- Improving stability and reliability of the backend system
Wadim L.
Last position:
Fullstack Developer at dripwear.app
Development of an iOS app for virtual try-on and outfit suggestions
The goal of the project is to develop a mobile application for personalized, photorealistic outfit suggestions. Users should be able to upload their own photos, try on clothes virtually, and find products that can be bought directly in the generated suggestions.
- Planning and implementation of the onboarding and photo upload in the iOS app
- Development of the mobile application with Expo and React Native
- Implementation of a Hono/Node.js backend for user, product, and generation processes
- Building an asynchronous processing pipeline with BullMQ and Redis
- Connection of PostgreSQL/pgvector and S3 for product, image, and generation data
- Integration of Gemini and OpenAI for outfit generation and image processing
- Implementation of a credit system and integration of RevenueCat
- Integration of Stripe Connect and affiliate product feeds for products that can be bought directly
Label: TypeScript, React Native, Expo, Hono, Node.js, PostgreSQL/pgvector, BullMQ, Redis, S3, Gemini, OpenAI, RevenueCat, Stripe Connect, Docker
Hamza K.
Last position:
Academic Research Contributor in Health Sector (Volunteer) at n/a
- Acted as technical consultant to optimize multi-layer ensemble models combining ResNet, CNN-BiGRU-Attention, and XGBoost.
- Guided implementation of a Logistic Regression meta-learner to solve class imbalance problems, achieving 92.86% accuracy and 0.9644 AUC on PTB-XL and Chapman-Shaoxing datasets.
Discover over 15,000 top freelancers
Statistics of experts using .NET Core
Aggregated from the professional profiles of matched freelancers.
Experience
20 years
Position duration
2.8 years
Positions per freelancer
15
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Manufacturing, Banking and Finance
Certification focus areas
Information Technology, Product Development, Project Management
Bachelor's degree or higher
88%
Master's degree or higher
49%
Doctorate
4%
Certifications per freelancer
2
Most common languages
English, German, Russian
Speak two or more languages
98%
Based on our profile pool as of 5 Nov 2026.
Daily rate distribution
The chart shows how the daily rates of experts in this technology 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 using .NET 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 5 Nov 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
.NET 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 (97%)
- Manufacturing (59%)
- Banking and Finance (52%)
- Healthcare (48%)
- Automotive (42%)
- Transportation (39%)
- Energy (35%)
- Government and Administration (33%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
What .NET Core is
.NET Core is Microsoft’s cross-platform framework for building web applications, APIs, background services and command-line tools with C#. It evolved into the modern .NET platform and runs on Windows, Linux and macOS. ASP.NET Core provides the web stack, while the wider ecosystem supports data access, testing and cloud deployment.
Where it is used
.NET Core supports systems that need strong performance, clear structure and long-term maintainability. Companies use it for:
- REST and gRPC APIs for web and mobile products
- Enterprise portals, internal applications and SaaS products
- Microservices, message-driven workers and scheduled services
- E-commerce, finance, logistics and public-sector systems
- Containerized workloads running in Azure or other cloud environments
Ecosystem and tooling
A strong specialist works across ASP.NET Core, Entity Framework Core, LINQ, dependency injection and the .NET CLI. Common project tools include Visual Studio, JetBrains Rider, NuGet, Docker, GitHub Actions and Azure DevOps. Depending on the system, useful adjacent technologies include SQL Server, PostgreSQL, Redis, RabbitMQ, Kubernetes and Azure services.
When companies hire experts
Freelance expertise is useful when a team is modernizing a legacy .NET Framework application, launching an API or splitting a monolith into services. Companies also bring in specialists to improve test coverage, tune database access, establish deployment pipelines or review architecture before a major release. Short-term support can reduce risk without expanding the permanent team.
What strong professionals deliver
Experienced .NET Core professionals turn requirements into maintainable services and explain the trade-offs behind their decisions. They define clean API contracts, handle authentication and authorization, use asynchronous processing appropriately and design reliable data access. They also document deployment, observability and recovery procedures so the system remains workable after handover.
How to assess fit
Look for evidence of production systems similar to yours, not only familiarity with C# syntax. Ask how the specialist approaches version upgrades, integration testing, performance bottlenecks and failures in distributed workflows. A practical review should cover code quality, security, monitoring and collaboration with product, design and operations teams.
Frequently asked questions
What clients ask us most about .NET Core — answered in short.
.NET Core is used to build web applications, REST and gRPC APIs, background workers, command-line tools and cloud services. ASP.NET Core is its web framework, while Entity Framework Core supports data access in many application architectures.
.NET Core is cross-platform and designed for modern, modular applications, containers and cloud deployment. .NET Framework remains relevant for some Windows-specific or legacy systems, but new projects often use the unified .NET platform that followed .NET Core.
.NET Core work commonly involves C#, ASP.NET Core, Entity Framework Core, SQL, REST, authentication and automated testing. Depending on the project, useful complementary skills include Docker, Kubernetes, Azure, CI/CD pipelines, message brokers and frontend integration.
The right level depends on the system’s risk and scope. A small API may need a specialist who can deliver focused features, while a migration or distributed platform calls for someone experienced with architecture, security, observability and production incidents in .NET Core.
Yes. .NET Core projects work well remotely when teams maintain clear API contracts, pull-request standards, issue tracking and deployment documentation. Regular technical reviews and agreed communication hours help when contributors work across locations or time zones.
.NET Core is a strong choice when a company already uses C#, Microsoft identity, SQL Server or Azure, or needs a structured platform for large services. Node.js may suit JavaScript-centered teams, while Java is often preferred where its established ecosystem and tooling are already central.
Ask for examples of comparable systems and discuss specific decisions around API design, data access, testing and deployment. A capable .NET Core professional can explain trade-offs clearly, identify operational risks and demonstrate how the code will be monitored and maintained.
A .NET Core freelancer may work on new services, legacy migrations, API integrations, performance improvements or cloud delivery. The work often includes collaboration with product and operations teams, reviewing pull requests, writing tests and documenting decisions for future maintainers.
The average hourly rate of freelancers who have used .NET Core in their recent projects is 89 €, which corresponds to a daily rate of about 709 € based on an 8-hour working day.
Of the freelancers who have used .NET Core in their recent projects, 88% hold at least a Bachelor's degree, 49% hold at least a Master's degree, and 4% hold a doctorate.
On average, freelancers who have used .NET Core in their recent projects have 20 years of professional experience, with a single engagement typically lasting around 2.8 years.
The most common languages among freelancers who have used .NET Core in their recent projects are English (98%), German (96%), and Russian (15%).
The most common industries among freelancers who have used .NET Core in their recent projects are Information Technology (97%), Manufacturing (59%), and Banking and Finance (52%).
The most common business areas among freelancers who have used .NET Core in their recent projects are Information Technology (100%), Product Development (98%), and Quality Assurance (57%).
Main locations of FRATCH Experts, who have recently used .NET Core
Our freelancers and interim experts are at home all over Germany — available on-site in Berlin, Hamburg, Munich and every major business hub, or fully remote. Choose a city to discover matched specialists, local market insights and up-to-date availability.
Berlin 
Hamburg 
Munich 
Frankfurt 
Dusseldorf 
Dortmund In Austria our freelancers and interim experts support companies from Vienna to Graz — on-site where your project needs them, or fully remote. Choose a city to discover matched specialists, local market insights and up-to-date availability.
Vienna Graz Across Switzerland our specialists are active in Zurich, Geneva, Basel and Bern — working on-site or fully remote. Choose a city to discover matched specialists, local market insights and up-to-date availability.
Zurich Geneva Basel Bern Countries:
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FRATCH CEO
