.NET Core Experts in Berlin
matched in minutes by AIHire experts who deliver ASP.NET Core APIs, cloud-native services, and enterprise applications across the Microsoft .NET ecosystem. FRATCH finds vetted, available freelancers whose skills match your technical needs quickly and precisely.
Meet FRATCH Experts in Berlin, who have recently used .NET Core
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
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.
Salvation O.
Last position:
Product Management Consultant at Self-Employed (Freelancer)
- Led end-to-end product discovery and strategy engagements for early-stage founders (pre-seed) clients, defining product vision, OKRs, and go-to-market strategies and roadmaps for their cloud-based and AI-enabled solutions.
- Designed scalable product operating models (Agile/Scrum, backlog governance, KPI frameworks) as part of the partnership, to improve delivery predictability and reduce feature cycle time by up to 30%.
- Built scalable product roadmaps aligned to fundraising milestones, helping founders articulate product vision, product<>market fit, and traction clearly to investors.
Vamsi K.
Last position:
Full Stack .NET Developer at Neusta GmbH
- Implemented and maintained logistics-domain applications using Angular, C#, ASP.NET, HTML5, CSS3, JavaScript, AJAX and Bootstrap
- Analyzed, designed, coded and deployed backend services and integrations using .NET, XML Web Services and RESTful APIs
- Developed automated SSIS packages and scheduled ETL jobs to support data workflows
- Built and maintained Python scripts for automation and prototyping; applied Cursor AI to build/refactor full-stack AI/ML model integrations
- Implemented unit and integration testing (NUnit) and conducted performance tuning for backend services
- Managed source control and CI/CD using GitHub, Azure CI/CD pipelines and TeamCity
Mohamed G.
Last position:
Lead / Principal Cloud, AI & Security Architect at Freelancer / CC Conceptualise GmbH
Projects:
Project: RWE – Development of a company-wide Zero Trust cybersecurity architecture (CITADEL) Role: Senior Enterprise Cybersecurity Architect / Zero Trust Architect Company: RWE AG Description: Concept and implementation of the strategic CITADEL cybersecurity target architecture at RWE, based on the Zero Trust architecture principle and aligned with regulatory requirements such as NIS2, ISO 27001 and company-wide security governance policies. The goal was to build a measurable, auditable and scalable security architecture with a strong focus on Identity Governance, compliance transparency and operational manageability. Responsibilities & Achievements:
- Zero Trust architecture design: Developed a company-wide Zero Trust reference architecture (Identity, Device, Network, Application, Data) including trust zones, control points and enforcement mechanisms according to NIS2.
- Identity & Access Governance (IGA): Designed and introduced IGA governance structures including role models, recertification processes, segregation of duties (SoD) and lifecycle management for identities and access.
- Security governance & KPIs: Defined and implemented security KPIs and metrics to manage Zero Trust maturity, identity risks and compliance at the management level.
- Compliance & reporting: Built standardized compliance reports and dashboards to support internal audits, external assessments and regulatory evidence (e.g. NIS2).
- Architecture & stakeholder alignment: Worked closely with Enterprise Architecture, IT operations and business units to integrate the CITADEL architecture into existing IT and security landscapes.
- Strategic security consulting: Advised programs and projects on Zero Trust compliance, identity centricity and regulatory requirements in the energy and critical infrastructure (KRITIS) environment. Technologies & Methods: Zero Trust Architecture, NIS2, Identity Governance & Administration (IGA), IAM, RBAC, SoD, Entra ID, SailPoint, Zscaler, Terraform / IaC, Policy as Code, security KPIs, compliance reporting, NIST 2.0, ISO 27001, Enterprise Security Architecture, governance frameworks, risk & control management
Project: Scalable AI Workbench Platform on Microsoft Azure Role: Cloud Architect & Engineer Company: Siemens Energy Description: Design, development and operation of a secure, modular cloud infrastructure to support Data Science, Machine Learning and AI applications for various engineering teams at Siemens Energy. Responsibilities & Achievements:
- Cloud architecture: Designed and implemented an Infrastructure-as-Code solution (Terraform) for automated provisioning of Azure resources (Resource Groups, Storage Accounts, Cosmos DB, Application Insights, networking, PostgreSQL Flexible Server, Azure Container Apps, Azure Container Registry).
- Developer portal: Used Backstage with custom frontend and backend plugins (Node.js, TypeScript, React.js, PostgreSQL, Container Apps) to enable self-service and empower developers, data scientists and AI/ML engineers.
- Role-based access control: Implemented Azure RBAC to grant targeted access (e.g. Storage Blob Data Contributor, Reader) to engineering groups (e.g. AI Engineers) for relevant resources.
- Data platform engineering: Built and configured a multi-layered storage landscape (Raw, Curated, Vector data), including automated container creation and access control for advanced analytics and AI workloads.
- DevOps integration: Integrated with Azure DevOps for CI/CD pipelines to automate deployment, monitoring and compliance.
- Security & compliance: Implemented Private Endpoints, network policies and Managed Identities to ensure data protection and regulatory compliance.
- Collaboration: Worked closely with cross-functional teams to align the cloud infrastructure with business and technical requirements and drive digital transformation at Siemens Energy. Technologies: Azure, Terraform, Azure DevOps, Cosmos DB, Application Insights, Azure Storage, Private Endpoints, Azure Synapse, Azure Machine Learning, Azure Entra ID, RBAC, Backstage, Node.js, React.js, PostgreSQL, Python (automation), Git
Artem K.
Last position:
Software Architect at VR Payments
- Worked on the development of cloud-based web platform for different financial solutions (Payment by invoice, EPI, Freenet)
- Made technical and architectural decisions, discussed with management team the direction of the platform
- Provided technical expertise, made software improvements
- Participated in meetings, reviewed tickets, wrote documentation
- Technologies used: C#, .NET, MS Azure Services, Azure SQL, CI/CD, Azure DevOps, Jira
Muhammad Jahangir J.
Last position:
Senior Full Stack Developer at Freelancer
- Architected RESTful APIs and microservices using .NET Core.
- Designed and managed SQL Server and Cosmos DB databases.
- Developed responsive frontends with Angular, Bootstrap, and TypeScript.
- Deployed and managed Azure cloud infrastructure.
- Implemented unit tests for both backend and frontend modules.
Muhammad A.
Last position:
Senior Software Engineer at Verbund Pflegehilfe
Own Azure-hosted ASP.NET Core microservices for chronic-care workflows, sustaining 99.8% uptime across 3,000+ patient interactions.
Shape HL7 FHIR-based patient, encounter, and observation profiles delivering a unified source of truth for clinical teams and integrations.
Implement SignalR telemetry, Application Insights alerting, and automated pipelines that surface deteriorating vitals in under three seconds.
Automated consultant outreach by orchestrating Twilio voice campaigns via n8n workflows and VAPI AI assistants, boosting successful client contacts by 55%.
Entlass Manager: Led the end-to-end build of the chronic-care coordination platform, standing up Azure-native microservices, clinical data flows, and patient-facing tooling from initial requirements through production release.
Power Dialer: Built the Twilio-driven consultancy auto-dialer and n8n workflows, raising client reachability to 85%.
Kai S.
Last position:
Software Developer at Hensoldt AG
- Development of a GUI application for capturing and calculating TOPSIS sensor combinations
- Technologies: Python, VS Code, Unit Tests, Clean Code, GitHub Copilot
Alexandar B.
Last position:
Software Developer
Programming design software for piston compressors (mechanical engineering, .NET, WPF, EF Core)
Discover over 15,000 top freelancers
Statistics of experts using .NET Core
Aggregated from the professional profiles of matched freelancers.
Experience
16 years (Germany: 19 years)
Position duration
3 years (Germany: 2.8 years)
Positions per freelancer
9 (Germany: 14)
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Healthcare, Automotive
Certification focus areas
Business Intelligence, Information Technology, Product Development
Bachelor's degree or higher
100% (Germany: 88%)
Master's degree or higher
63% (Germany: 46%)
Certifications per freelancer
2
Most common languages
German, English, French
Speak two or more languages
100% (Germany: 98%)
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 .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 19 Sep 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 (100%)
- Healthcare (80%)
- Automotive (50%)
- Energy (50%)
- Manufacturing (50%)
- Education (40%)
- Banking and Finance (40%)
- Transportation (40%)
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, open-source framework for building web applications, APIs, background services and command-line tools. It became the foundation for the unified .NET platform, while the name .NET Core remains common in projects and searches. Its runtime works across Windows, Linux and macOS.
What it builds
.NET Core supports systems that need reliable performance, clear service boundaries and long-term maintainability. Companies use it for customer portals, internal applications, transaction services and integrations with business software.
- REST and gRPC APIs for web and mobile products
- ASP.NET Core applications with server-rendered or client-side interfaces
- Background workers, scheduled processing and message-driven services
- Microservices running in containers and cloud environments
Ecosystem and tooling
The ecosystem includes ASP.NET Core, Entity Framework Core, LINQ, NuGet and the built-in dependency injection model. Strong specialists also work with SQL Server, PostgreSQL, Redis, Docker, Kubernetes and Azure services. Testing commonly involves xUnit, NUnit, integration test tools and automated build pipelines.
When expertise matters
Freelance expertise is useful when a team is modernising a legacy .NET Framework application, splitting a large system into services or preparing an ASP.NET Core product for cloud deployment. It also helps when API reliability, authentication, data access or release automation has become a delivery risk.
- A new service needs a production-ready architecture
- An existing application requires migration to modern .NET
- Performance, observability or deployment problems slow delivery
- Internal specialists need support with a focused technical task
What strong specialists deliver
Strong .NET Core professionals make architecture decisions visible and keep implementations easy to test and operate. They understand asynchronous programming, dependency injection, secure authentication, data modelling and API versioning. They also document trade-offs and connect application design with infrastructure, monitoring and release processes.
Working with experts in Berlin
Berlin teams often combine local collaboration with remote delivery across product, finance, logistics, media and public-service environments. The right working model depends on data access, workshop needs and release responsibilities. Clarify expected availability, communication language, repository access and ownership of technical decisions before work begins.
Frequently asked questions
Key details about .NET Core, drawn from the questions we get asked most.
.NET Core is used to build web applications, REST and gRPC APIs, background services, command-line tools and cloud-native systems. It is a strong fit for products that need cross-platform operation, structured architecture and integration with databases or external services.
.NET Core is cross-platform and open source, while the older .NET Framework is primarily tied to Windows and legacy application environments. The modern .NET platform carries forward the .NET Core approach with a unified runtime and broader application support.
.NET Core refers to the cross-platform runtime and application platform, whereas ASP.NET Core is its web framework. A specialist may use ASP.NET Core for APIs or web interfaces alongside Entity Framework Core for data access and other .NET libraries.
A strong .NET Core specialist usually understands SQL databases, Entity Framework Core, HTTP APIs, authentication and automated testing. Cloud services, Docker, Kubernetes, message brokers, observability and CI/CD are also valuable when the system runs as distributed services.
The right level depends on the work rather than a fixed number of years. A contained API feature may need focused framework knowledge, while a migration, distributed system or production incident calls for a .NET Core expert who can handle architecture, security, testing and operations.
.NET Core work is well suited to remote collaboration because source code, pipelines, environments and technical documentation can be shared online. Berlin companies should still agree on overlap hours, German or English communication, access controls and which workshops require on-site participation.
Ask for examples of API design, testing strategy, deployment practices and decisions made under real constraints. A capable .NET Core professional explains trade-offs clearly, reviews existing code methodically and considers security, observability, maintainability and operational ownership.
.NET Core can be a strong choice when a company values the Microsoft ecosystem, typed application code, mature tooling and integration with Azure or SQL Server. Node.js may suit JavaScript-focused teams, while Java may fit established JVM environments; the best option depends on existing skills, runtime needs and system constraints.
The average hourly rate of freelancers in Berlin, Germany who have used .NET Core in their recent projects is 85 €, which corresponds to a daily rate of about 676 € based on an 8-hour working day.
Of the freelancers in Berlin, Germany who have used .NET Core in their recent projects, 100% hold at least a Bachelor's degree and 63% hold at least a Master's degree.
On average, freelancers in Berlin, Germany who have used .NET Core in their recent projects have 16 years of professional experience, with a single engagement typically lasting around 3 years.
The most common languages among freelancers in Berlin, Germany who have used .NET Core in their recent projects are German (100%), English (100%), and French (20%).
The most common industries among freelancers in Berlin, Germany who have used .NET Core in their recent projects are Information Technology (100%), Healthcare (80%), and Automotive (50%).
The most common business areas among freelancers in Berlin, Germany who have used .NET Core in their recent projects are Information Technology (100%), Product Development (100%), and Quality Assurance (90%).
Main locations of FRATCH Experts, who have recently used .NET 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 
Hamburg 
Munich 
Frankfurt 
Dusseldorf Countries:
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