C# Experts in Berlin
in minutes, matched from vetted and available specialists with the power of AI.Hire experts who build ASP.NET Core services, desktop software, cloud integrations, and clean .NET codebases with C#. Get fast, precise matching with vetted, available freelancers who can join remote or Berlin-based work.
Meet FRATCH Experts in Berlin, who have recently used C#
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
Maciej Rosiek
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
Marina Kornilova
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.
Hendrik Wagner
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#
Gerald Bode
Last position:
Freelance Consultant at Freelance Consultant
Hamza Khan
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.
Basel Jaber
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, TÃœV, and VDE standards.
- Act as technical liaison between customers, sales teams, and manufacturing to deliver customized solutions.
Vili Dhamo
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
Sascha Bach
Last position:
Professional Development at Career Break
Intensive upskilling program to expand into fullstack, AI, and accessibility - preparing for freelance Angular/React projects with Next.js, Redux, and LLM integration.
Key achievements:
React - The Complete Guide (incl. Next.js, Redux): Comprehensive course on React Hooks, Redux Toolkit, React Router, Next.js App Router, React Server Components, Form Actions (React 19), authentication, unit testing, TypeScript integration, and fullstack apps with HTTP requests.
Practical Prompt Engineering Masterclass: Hands-on masterclass on prompt design, chain-of-thought, few-shot prompting, and LLM optimization for AI-powered frontend features like accessibility checks.
Understanding TypeScript: Deep dive into TypeScript types, interfaces, generics, and integration with React/Next.js for type-safe, scalable codebases.
Design Thinking: Methods for user-centered design, ideation, prototyping, and iteration - applied to accessible UI/UX concepts.
Web Accessibility Training Course WCAG 2.1 & 2.2 Compliance: Detailed WCAG 2.1/2.2 guidelines, BFSG requirements, audit techniques, ARIA widgets, and screen reader testing for compliant Angular/React applications.
New skills: Next.js, Redux, TypeScript, prompt engineering, WCAG, design thinking.
André Görst
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 Pahlig
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 Erol
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 Yilmaz
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
Jurgen Wiehan
Last position:
Director of Engineering at Wunderflats
- Reporting directly to the CEO.
- Responsible for all things in the engineering space including software engineering, architecture and quality assurance.
- Led a team of around 25 cross functional team members including frontend, backend and fullstack engineers.
- Aligned engineering strategies with organisation strategy through clearly identifiable OKRs.
- Introduced Team Topologies and Scrum, ensuring less hand-offs between teams and improving their efficiencies which resulted in more impactful solutions for our customers.
- Lead the technology due diligence process for an M&A decision.
- Spearheaded the re-architecture of our product from monolith to microservices, reducing technical debt and enabling expansion into new markets.
- Managed a budget of around €2m, optimising costs by introducing SaaS solutions and replacing homegrown systems.
- Negotiated vendor contracts, reducing costs by at least 10% and improving service delivery.
- Set clear expectations and goals for engineers ensuring their continued growth within the organisation.
- Technology stacks included React, Node.js, MongoDB and GCP.
Alexander Vitanyi
Last position:
Product Owner at FI-TS
- Rebuilding an existing cloud solution with Kubernetes, Terraform, Ansible, Prometheus, Grafana, GitLab, Argo CD and PostgreSQL
- Coordinating and managing external partners and service providers
- Ensuring service delivery on time and on budget with budget responsibility
- Integrating the cloud solution with external public clouds (AWS)
- Setting up and defining processes and workflows in Jira and Confluence
- Product management of software development for automation and self-service in CI/CD DevOps mode
- Agile software development with Kanban and Scrum in various development teams
- Single point of contact for key customers in respective projects
- Creating and aligning the product backlog with stakeholders from sales, architecture, development teams, marketing, management and customers
- Migrating existing customers to the AWS cloud as product owner
- Creating and aligning a product roadmap with internal and external stakeholders
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: 8%)
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 30 Aug 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 30 Aug 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
About the technology
What C# covers
C# is a general-purpose language in the .NET ecosystem. Teams use it for web back ends, APIs, desktop tools, cloud services, and automation. Strong specialists know where C# fits best and how to keep code maintainable as systems grow.
Common project work
- ASP.NET Core services and REST APIs
- Blazor and server-side web apps
- WPF, WinForms, and other desktop software
- Azure integrations, background jobs, and workers
- Migration from older .NET Framework code
Tooling and stack
C# work often sits with .NET, ASP.NET Core, Entity Framework Core, LINQ, NuGet, and Visual Studio or Rider. Good professionals also understand testing, logging, CI pipelines, and package management. In Berlin, many teams want experts who can fit into mixed English-speaking delivery groups.
When to bring in help
Companies bring in freelance C# specialists when a product needs a new service, a cleanup of legacy code, or support for a release that cannot slip. They are also useful when an internal team needs help with performance, architecture, or a tricky integration. The best engagements are clear about ownership and expected deliverables.
What strong experts do
Strong C# professionals write code that is easy to read, test, and change. They keep business logic separate from infrastructure, use async code carefully, and design APIs that are stable for other teams. They also spot when older .NET code should be refactored instead of patched again.
How to evaluate fit
Look for specialists who can explain trade-offs in plain language and who have shipped similar .NET systems. Ask about testing habits, deployment flow, and how they handle security, error handling, and dependency updates. A good fit should feel practical, structured, and calm under pressure.
Frequently asked questions
The facts hiring teams ask for most often when it comes to C#.
C# is used to build web APIs, business back ends, desktop applications, cloud workers, and internal tools. It is especially common in the .NET stack, where teams need code that is structured, testable, and easy to maintain. Many specialists also use it for automation and integration work.
C# is the language, while .NET is the runtime and broader ecosystem. ASP.NET Core is one of the main frameworks used with it for web apps and APIs. When a project says it needs C#, it often really means a .NET specialist who can work across the stack.
C# work becomes more specialized when a system is large, long-lived, or tied to older .NET Framework code. A specialist is useful when you need clean architecture, safer refactoring, or help with production issues that affect several services. That matters most when delivery speed and code quality both have to stay high.
A strong C# freelancer usually also knows ASP.NET Core, Entity Framework Core, SQL, testing tools, and basic cloud deployment. For frontend-adjacent work, Blazor or JavaScript may matter too. For enterprise systems, experience with logging, auth, messaging, and CI/CD is often important.
C# is often chosen for typed business systems, Microsoft-friendly environments, and teams that want a broad .NET toolset. Compared with Java, it feels similar in enterprise use but has its own syntax and ecosystem choices. Compared with JavaScript back ends, it usually offers stronger structure and fewer runtime surprises.
Yes, C# experts often work remotely with Berlin teams, especially when the codebase is in English and the delivery process is well defined. On-site or hybrid work can help when the project is tied to local stakeholders, legacy systems, or sensitive infrastructure. The key is clear access to the repository, build pipeline, and people who own the requirements.
Look for a C# specialist who can explain design choices, not just syntax. Good signs include clean API boundaries, practical tests, solid error handling, and a history of improving existing code instead of only starting new projects. Ask how they would approach refactoring, deployment, and production support.
A thoughtful C# freelancer will ask about the current .NET version, the target architecture, and the main risks in the codebase. They should also want to know how releases happen, who approves changes, and whether the work is a feature build, a migration, or a cleanup. Those details shape the plan more than the language itself.
The average hourly rate of freelancers in Berlin, Germany who have used C# in their recent projects is 96 €, which corresponds to a daily rate of about 765 € 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 (18%).
The most common industries among freelancers in Berlin, Germany who have used C# in their recent projects are Information Technology (92%), Manufacturing (51%), and Education (41%).
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 (59%).
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
