C# Experts in Berlin
matched in minutes from over 15,000 CVs with the power of AIHire experts who deliver .NET web applications, cloud services, desktop software and game systems with C#, ASP.NET Core, Entity Framework and Azure. FRATCH finds a precise match fast among vetted, available freelancers.
Meet FRATCH Experts in Berlin, who have recently used C#
Sascha B.
Last position:
Web Developer at GxPlex
- Built a customized MediaWiki instance, including installation, MySQL database, SSL, and automatic backups
- Set up user roles (Admin, Mod, Verified, User) and a permissions system
- FlaggedRevisions for editorial review workflows · Commenting and rating extensions
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
Maciej R.
Last position:
Full Stack Developer (Freelancer) at Runbuggy
- Led development of RunBot AI assistant autonomously using LLM-powered workflow automation (React, TypeScript, Java, MongoDB, NATS)
- Architected TMS platform providing unified transportation management and real-time logistics visibility with AI processing pipelines
- Designed event-driven microservices architecture supporting marketplace
- Drove architectural decisions and technical leadership across full-stack platform development
Gerald B.
Last position:
Freelance Consultant at Freelance Consultant
Marina K.
Last position:
Independent Software Developer at LILARAUM
- Independently designed, developed, published, and maintained mobile games for iOS and Android.
- Implemented application architecture, gameplay systems, UI, monetization, analytics, and platform integrations.
- Managed the complete release lifecycle, including testing, store publication, production monitoring, and iterative improvements based on analytics.
Robin W.
Last position:
Founder & Consultant · Platform Engineering & AI Infrastructure at RootVector.ai
- Built and operate a hybrid Kubernetes platform across bare metal and cloud to validate multi-GPU workloads, security-zone isolation, and disaster recovery.
- Operate self-hosted AI coding agents in the platform's Git workflow, from issue triage to pull-request review; every change is gated by manifest diffs and policy checks in CI.
- Co-developed a sensor-fusion and GPU edge-inference platform selected by the European Defense Tech Hub from 50 solutions for field testing.
Hamza K.
Last position:
Academic Research Contributor in Health Sector (Volunteer)
- 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.
Mark W.
Last position:
Independent IT/AI Consultant at Freelance
- IT consulting, coaching, and implementation with a focus on AI
Basel J.
Last position:
Senior Application Engineer / Product Manager at Altran Magnetics LLC
- Oversee development and optimization of key products, including DP contactors, EMI filters, and circuit breakers.
- Lead certification processes ensuring compliance with UL, TÜV, and VDE standards.
- Act as technical liaison between customers, sales teams, and manufacturing to deliver customized solutions.
Vili D.
Last position:
Technical Lead, Data Engineer at Mercedes-Benz Consulting
- Optimized the data architecture (medallion) to better decouple processing stages and improve transparency and reproducibility
- Ensured technical quality of data processing in Databricks by introducing schema enforcement, data quality checks and a structured data architecture
- Orchestrated pipelines with Azure Data Factory
- Professionalized and automated the development and deployment process by integrating Git and GitHub Actions
- Led the Data Engineering team (3 members) in a functional role
- Conducted workshops to optimize and stabilize the data platform and the development process
- Collected and prioritized new requests, maintained the product backlog
- Technologies: Microsoft Azure (Data Lake, Data Factory), Databricks, Apache Spark (PySpark), Python, SQL, Git, Confluence, Power BI, Power Apps, Dataverse, MS SharePoint, Mural
Hendrik W.
Last position:
Software Test and Maintenance Support at Anton Paar ProveTec GmbH
- Add/create test specifications
- Conduct regression tests
- Conduct release tests
- Analyze Jira tickets
- Identify software defects and fix them with C#
André G.
Last position:
IT Consulting Project Management / Engineering Subproject Management at T-Systems (on assignment for government agencies)
- Projects for federal networks (NdB).
- CR management, EoL change requests, design and documentation according to ITSCM.
- Data center planning.
- Project management and engineering subproject management.
- Software development for virtual server environments according to BSI.
Hans-Christian P.
Last position:
Senior Full Stack and AI Engineer at simpleshow
- Developed a Generative AI-based image recommendation engine for an AI video production system
- Implemented automatic image analysis with GPT-4o
- Built semantic vector search using OpenAI embeddings, MongoDB, and OpenSearch
- Tagged and indexed 4 million customer assets
- Redeveloped recommendation engine with a hybrid, balanced keyword and vector search plus filters
Utku E.
Last position:
AI Strategy Consultant at Freelance
- Developed YourBestChance.io, an AI-powered career resilience platform that leverages advanced machine learning to provide personalized guidance and resources for users.
- Architected and implemented a Retrieval-Augmented Generation (RAG) system supporting three languages, utilizing GPT-based large language models (including OpenAI and Grok variants) integrated with specialized vector databases for efficient semantic search and similarity matching.
- Built an interactive AI chatbot powered by generative AI and RAG pipelines to deliver real-time, context-aware responses and enhance user engagement.
- Optimized data pipelines and AI infrastructure for scalability, ensuring robust performance under increasing loads and reducing latency by 50%.
- Developed comprehensive AI strategies using ML and Gen AI to create customized growth plans; analyzed company data to identify strengths, weaknesses, risks, and opportunities for AI integration.
- Defined ethical frameworks for AI deployment, assessed workforce and leadership upskilling needs, and built phased action plans (short-, mid-, and long-term) with targeted AI integration recommendations.
Mücahit Y.
Last position:
Managing Director & IT Freelancer at Tenero Digital UG
- IT consulting and freelance IT project management
- Projects in administrative support (process documentation, reporting & analysis)
- Moderation of workshops for clients in the education sector
Discover over 15,000 top freelancers
Statistics of experts using C#
Aggregated from the professional profiles of matched freelancers.
Experience
19 years (Germany: 20 years)
Position duration
2.5 years (Germany: 2.9 years)
Positions per freelancer
11 (Germany: 14)
Top business areas
Information Technology, Product Development, Project Management
Top industries
Information Technology, Manufacturing, Education
Certification focus areas
Information Technology, Product Development, Project Management
Bachelor's degree or higher
86% (Germany: 88%)
Master's degree or higher
60% (Germany: 54%)
Doctorate
12% (Germany: 9%)
Certifications per freelancer
2 (Germany: 3)
Most common languages
German, English, French
Speak two or more languages
98% (Germany: 97%)
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 Berlin 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 Berlin using C#
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.
C# 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 (92%)
- Manufacturing (52%)
- Education (42%)
- Healthcare (38%)
- Professional Services (38%)
- Automotive (37%)
- Energy (31%)
- Banking and Finance (31%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
C# at a glance
C# is a strongly typed, object-oriented language from Microsoft and the main language of the .NET ecosystem. Companies use it for web applications, APIs, business software, desktop tools, cloud services, games and connected systems. Its modern syntax supports clear, maintainable code across many application types.
.NET ecosystem
C# work commonly includes .NET, ASP.NET Core, Entity Framework Core and LINQ. Professionals also use Visual Studio or JetBrains Rider, NuGet packages, REST and GraphQL APIs, Docker, Azure services and automated testing tools. Familiarity with SQL databases, Git and CI/CD is often part of the same delivery.
Where it fits
C# supports both customer-facing products and internal systems where reliability, integration and long-term maintenance matter. Typical assignments include:
- Building ASP.NET Core websites and REST APIs
- Connecting business systems, databases and external services
- Developing Windows applications with WPF or WinUI
- Creating games and interactive experiences with Unity
- Modernizing older .NET Framework applications
When to hire specialists
Freelance expertise helps when a team needs to start a .NET product, extend an existing codebase or resolve a difficult production issue. Companies also bring in specialists for framework upgrades, cloud migration, performance work, test automation and architecture decisions. In Berlin, remote collaboration is common, while some projects benefit from on-site workshops and fluent German or English communication.
What strong professionals deliver
Strong C# professionals understand more than language syntax. They structure domain logic, design useful interfaces, handle asynchronous workloads, protect data and test behavior at the right level. They can explain trade-offs between a modular monolith and distributed services, choose suitable .NET libraries and leave documentation that helps the internal team continue the work.
Evaluating project fit
Look for evidence that a specialist has delivered systems similar to yours, not only listed C# or .NET on a profile. Discuss deployment, observability, security, database design and ownership of the final code. A practical review of architecture, testing approach and communication style reveals whether the professional can work effectively with your existing team and delivery process.
Frequently asked questions
The facts hiring teams ask for most often when it comes to C#.
C# is used for web applications, APIs, desktop software, cloud services, business systems and games made with Unity. It is also a practical choice for integrations, automation tools and services that run across Windows and Linux through .NET.
C# and Java both provide mature, strongly typed ecosystems for business applications and backend services. C# is closely integrated with .NET and Microsoft tooling, while TypeScript is centered on JavaScript environments and is often used for browser interfaces or Node.js services.
C# work often benefits from ASP.NET Core, Entity Framework Core, SQL, REST APIs and cloud services such as Azure. Depending on the project, useful adjacent skills include Docker, Kubernetes, frontend frameworks, message brokers, automated testing and CI/CD.
C# project needs vary with its scope, risk and existing codebase. A focused feature may suit a specialist who works independently in a defined area, while a migration, high-volume service or legacy system needs someone comfortable with architecture, testing and production operations.
C# projects are well suited to remote collaboration when repositories, environments, documentation and review practices are organized. Berlin teams should agree on working hours, communication language and access requirements early, especially when the work involves sensitive business systems.
C# can be a strong choice when a company needs a structured, typed codebase, mature tooling and consistent performance for a large service. Python may be preferable for rapid scripting, data exploration or machine learning workflows, so the decision depends on the product and team.
C# quality is visible in clear boundaries, useful tests, thoughtful error handling and code that is easy to operate. Ask the specialist to explain a comparable delivery, review a small technical decision and describe how they would monitor, secure and maintain the proposed solution.
C# specialists often support both modern .NET applications and older .NET Framework codebases. The right professional can assess dependencies, plan an incremental migration where appropriate and keep business-critical behavior stable during the transition.
The average hourly rate of freelancers in Berlin, Germany who have used C# in their recent projects is 97 €, which corresponds to a daily rate of about 773 € based on an 8-hour working day.
Of the freelancers in Berlin, Germany who have used C# in their recent projects, 86% hold at least a Bachelor's degree, 60% hold at least a Master's degree, and 12% hold a doctorate.
On average, freelancers in Berlin, Germany who have used C# in their recent projects have 19 years of professional experience, with a single engagement typically lasting around 2.5 years.
The most common languages among freelancers in Berlin, Germany who have used C# in their recent projects are German (98%), English (98%), and French (17%).
The most common industries among freelancers in Berlin, Germany who have used C# in their recent projects are Information Technology (92%), Manufacturing (52%), and Education (42%).
The most common business areas among freelancers in Berlin, Germany who have used C# in their recent projects are Information Technology (96%), Product Development (92%), and Project Management (58%).
Main locations of FRATCH Experts, who have recently used C#
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.
Hamburg 
Munich 
Cologne 
Frankfurt 
Stuttgart 
Dusseldorf 
Dortmund 
Essen 
Nuremberg Request a free demo
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Philipp Thomaschewski
FRATCH CEO
