ASP.NET Web API Experts in Frankfurt
, matched in minutes from over 15,000 CVsHire experts who design RESTful services, secure integrations with ASP.NET Core and Azure, and connect APIs to enterprise systems. FRATCH matches you quickly with precise, vetted and available freelancers for your project.
Meet FRATCH Experts in Frankfurt, who have recently used ASP.NET Web API
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
Mojtaba G.
Last position:
Full-Stack Software Developer at Energiebereich
- Led and coordinated consumption and price calculations for gas and electricity forecasts to ensure accurate and reliable price determination
- Implemented modern .NET 7-based microservices and Web APIs in an Azure environment using Azure App Service, Azure Storage and Azure Service Bus
- Created and managed infrastructure in Azure using Terraform, including resource provisioning and the automation of deployment processes
- Developed and maintained Azure DevOps pipelines to optimize build, test and release workflows
- Optimized data management with SQL Server and ensured seamless integration across all services
- Developed the frontend with Angular 16, TypeScript, CSS, HTML and Kendo UI to provide an intuitive and engaging user interface
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
Mahesh S.
Last position:
Azure Solution Architect at Automotive industry
Implementation of complex Azure resources using Terraform IaC and Azure DevSecOps pipelines with network security and zero-trust governance policies
Optimization of the existing network design, firewall and database migration
Implementation of governance and network policies as Policy as Code (PaC)
Establishment of company-wide Azure connectivity using Azure VPN as an IPSec tunnel
Implementation of hybrid on-premises multi-cloud connectivity (GCP, Azure) using Terraform
Development of Azure Functions for scheduled cron jobs and Service Bus message queuing with topics
Optimization of messaging with Service Bus premium features and IP whitelisting
Stakeholder management, customer communication and creation of Architectural Decision Records (ADR)
Responsible for cost-efficient quick wins in Azure and on-premises systems
Erhan Y.
Last position:
Commerzbank
- Newly developed an ASP.NET web application for mortgage financing
- Maintained and enhanced it both functionally and technically (expanded to other loan types, connected to various services, developed custom web services)
- Analyzed business requirements in close cooperation with business units
- Created IT concepts and technical documentation
- Developed backend and frontend
- Designed and implemented automated build, deployment, and testing processes
- Created scripts to automatically generate data access layers (C# classes and SQL scripts) and integrated them into build and deployment processes
- Languages: C#, PowerShell, JavaScript
- Technologies: ASP.NET, Windows Forms, XML Web Services, Windows Services, MS SQL Server, Entity Framework, unit testing, automated build, deployment, and testing processes
- Tools: Visual Studio 2005–2015, Team Foundation Server, DevExpress, Rational ClearCase, Rational ClearQuest, CruiseControl.net
Thomas F.
Last position:
Senior Fullstack Developer at DB InfraGO AG
- Frontend: new development in Angular
- Backend: new development in ASP.NET Web API
- Database: modeling, implementation, and operation based on Microsoft SQL Server
- Requirements management, design, and implementation
- Deployment, maintenance, operation
- Knowledge transfer to internal staff
- Agile development (SCRUM)
Discover over 15,000 top freelancers
Statistics of experts using ASP.NET Web API
Aggregated from the professional profiles of matched freelancers.
Experience
26 years
Position duration
2.7 years
Positions per freelancer
17
Top business areas
Information Technology, Product Development, Operations
Top industries
Information Technology, Transportation, Banking and Finance
Certification focus areas
Information Technology, Product Development, Project Management
Bachelor's degree or higher
100%
Master's degree or higher
60%
Certifications per freelancer
4
Most common languages
German, English, Russian
Speak two or more languages
100%
Based on our profile pool as of 29 Oct 2026.
Daily rate distribution
The chart shows how the daily rates of experts in this technology in Frankfurt 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 in Frankfurt using ASP.NET Web API
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 29 Oct 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
ASP.NET Web API 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 (83%)
- Transportation (83%)
- Banking and Finance (67%)
- Healthcare (67%)
- Automotive (50%)
- Education (50%)
- Pharmaceutical (50%)
- Energy (33%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
API foundation
ASP.NET Web API is a Microsoft framework for building HTTP services that expose application data and business operations. It is commonly used for REST APIs consumed by web front ends, mobile apps, desktop software and connected systems. Professionals work with C#, routing, controllers, model binding, validation and content negotiation to create clear, maintainable endpoints.
Microsoft ecosystem
The technology fits closely with the .NET ecosystem and is often delivered with ASP.NET Core, Entity Framework Core, SQL Server and Microsoft Azure. Strong specialists understand dependency injection, middleware, configuration, logging and automated testing. They may also connect services with Azure Service Bus, Docker, OpenAPI and CI/CD pipelines.
Typical projects
- REST APIs for customer portals, commerce and internal applications
- Integration layers between ERP, CRM, payment and identity systems
- Backend services for web and mobile products
- Versioned APIs documented with Swagger or OpenAPI
- Secure services using OAuth 2.0, OpenID Connect and JWT
When expertise matters
Companies bring in freelance specialists when an existing API needs a controlled modernization, stronger security or more reliable performance. They are also useful when an internal team must deliver integrations quickly or establish service standards across several products. In Frankfurt, professionals may support financial, logistics, healthcare and industrial systems through remote or on-site collaboration.
Delivery skills
A capable ASP.NET Web API professional translates domain rules into consistent resources, status codes and error responses. They design authentication and authorization carefully, handle backward compatibility and write tests that cover both business behavior and integration boundaries. Useful adjacent skills include SQL, cloud deployment, message-based architecture, observability and frontend API consumption.
Quality signals
Look for evidence of production APIs rather than isolated demo endpoints. Strong professionals explain trade-offs around REST design, synchronous versus asynchronous work, caching, rate limits and data protection. Ask how they document contracts, monitor failures, manage API versions and review changes with the wider team. Clear communication in English and, where needed, German can simplify collaboration with teams in Frankfurt.
Frequently asked questions
The facts hiring teams ask for most often when it comes to ASP.NET Web API.
ASP.NET Web API is used to create HTTP-based services that let applications exchange data and trigger business operations. Companies use it for REST APIs behind web and mobile applications, partner integrations, internal tools and enterprise platforms.
ASP.NET Web API traditionally uses controllers, attributes and a structured request pipeline for larger API applications. ASP.NET Core Minimal APIs use a lighter endpoint style, which can suit smaller services, while controller-based APIs may offer clearer organization for complex domains and established .NET teams.
A strong ASP.NET Web API specialist will often bring C#, ASP.NET Core, Entity Framework Core and SQL experience. Knowledge of OpenAPI, OAuth 2.0, Azure, Docker, automated testing and CI/CD is also valuable when the API must be operated in production.
The right level depends on the scope, risk and existing team. A small integration may need focused API delivery, while a core platform requires a professional who has handled versioning, security, observability, database boundaries and production incidents with ASP.NET Web API.
Yes. ASP.NET Web API work is well suited to remote collaboration because requirements, contracts, code reviews and deployments are handled through shared tools. On-site sessions in Frankfurt can still help with domain discovery, security reviews and coordination across enterprise teams.
Review shipped API examples, not only framework familiarity. Ask how the professional approaches authentication, validation, error handling, automated tests, documentation and compatibility when changing an ASP.NET Web API service.
ASP.NET Web API remains relevant within the Microsoft ecosystem, especially when teams use C#, ASP.NET Core and Azure. The specific implementation should match the application: controller-based APIs, Minimal APIs, gRPC or messaging may each be appropriate for different service boundaries.
They first examine contracts, runtime behavior, security controls, tests and operational data. A strong ASP.NET Web API professional then prioritizes measurable improvements such as clearer endpoint design, safer authentication, better database access, reliable deployment and useful monitoring.
The average hourly rate of freelancers in Frankfurt, Germany who have used ASP.NET Web API in their recent projects is 103 €, which corresponds to a daily rate of about 822 € based on an 8-hour working day.
Of the freelancers in Frankfurt, Germany who have used ASP.NET Web API in their recent projects, 100% hold at least a Bachelor's degree and 60% hold at least a Master's degree.
On average, freelancers in Frankfurt, Germany who have used ASP.NET Web API in their recent projects have 26 years of professional experience, with a single engagement typically lasting around 2.7 years.
The most common languages among freelancers in Frankfurt, Germany who have used ASP.NET Web API in their recent projects are German (100%), English (100%), and Russian (17%).
The most common industries among freelancers in Frankfurt, Germany who have used ASP.NET Web API in their recent projects are Information Technology (83%), Transportation (83%), and Banking and Finance (67%).
The most common business areas among freelancers in Frankfurt, Germany who have used ASP.NET Web API in their recent projects are Information Technology (100%), Product Development (100%), and Operations (50%).
Main locations of FRATCH Experts, who have recently used ASP.NET Web API
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.
Countries:
Berlin Hamburg Munich Cologne 
Frankfurt Stuttgart Dusseldorf Leipzig Dortmund Essen Bremen Dresden Hanover Nuremberg Request a free demo
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FRATCH CEO
