.NET Experts in Cologne
matched in minutes from over 15,000 CVsHire experts who deliver APIs, cloud services and enterprise applications with .NET, ASP.NET Core and Microsoft Azure. FRATCH precisely matches you with vetted, available freelancers who fit your technical needs and can start quickly.
Meet FRATCH Experts in Cologne, who have recently used .NET
Burhan D.
Last position:
Enterprise Architect & Solution Architect at DB Netz AG
With project PRIZMA, DB will modernize its infrastructure on the one hand, and develop a fail-safe IT landscape on the other hand, which can be restored quickly and securely in case of a disaster.
- Capture current architectures of existing systems as well as methodical consulting and development of target architectures
- Deepen and maintain the building plan / target IT landscape
- Implement technical architecture concepts & architecture descriptions
- Implement migration concepts for updating and further developing the platform and information systems
- Assess submitted improvement suggestions as part of the project
- Capability management: identify capability gaps, develop target visions, and support transformation planning within the enterprise architecture.
- Create a compatibility matrix of the components in use and compare dependencies of specific versions
- Create an IT concept for extending the platform with the following topics: hardware and software requirements, security, licensing, high availability, load balancing, backup & recovery, update strategy, monitoring integration, etc.
- Coordinate with business architects as well as technical architects from the cross-functional architecture area of the PRISMA program for the topics (backup, Active Directory, monitoring, Citrix, and business applications ...)
- Status meetings and alignment of project planning with the Release Train Engineer / Project Manager
- Advise the Release Train Engineer / Project Manager in identifying project risks
- Advise the System Architect Engineers in steering the implementation of the concept
- Implement the IT concept
- Document the infrastructure
Label: MS Project, LINUX, Windows, ORACLE, Java, REST, SharePoint, Microsoft Exchange, UML, Enterprise Architect, BPMN, AZURE, AWS, V-MODEL, Micro Service, VisualStudio, SAP S/4HANA, SCRUM(SAFE), ESB (TIBCO), Python, Innovator, LeanIX (TOGAF), Ansible, Ansible Tower, Ansible Automation, ROBOT, SpringBoot
Ahmed M.
Last position:
Senior Full-Stack Engineer at NEW NETZ
- Built more than 15 frontend applications and more than 10 backend services across internal tools, back-office workflows, and external portals for installers and end customers
- Automate build and release workflows with TypeScript and Azure DevOps
- Mentor junior engineers through code reviews and technical guidance
- Integrate AI-assisted and agentic development practices into engineering workflows
- Coordinate user experience decisions with UX designers
Tech Stack: Claude Code, Codex, AWS (S3, Lambda, AppSync, Resolver), Next.js App Router, ReactJS, NuxtJS, Vue.js, Storybook, JavaScript, TypeScript, GraphQL, Azure DevOps
Rainer L.
Last position:
Senior IT Consultant, Senior Software Architect, Senior Software Developer, Senior DevOps Engineer at Techniker Krankenkasse
Automation of the database major / minor releases for the TKeasy project
Concept for database major / minor release automation
As-is analysis
Evaluation of Redgate Flyway functionality
Concept creation
Products: Redgate Flyway, GitHub, Quest, Erwin Data Modeller, Oracle, Atlassian Jira, Atlassian Confluence
Skills: Docker, Continuous Delivery, Continuous Integration, Redgate Flyway, Major Releases, Minor Releases
Rodion O.
Last position:
Founder, CTO & Managing Director at MYNR Product Mining GmbH
- Responsible for the architecture and development of an AI-native SaaS platform for industrial product portfolio management.
- Designed the modern data platform architecture on Azure for scalable analytics and enterprise data integration.
- Built enterprise data ingestion and transformation pipelines across complex industrial system landscapes.
- Developed graph-based representations of product structures and dependencies for analytical reasoning.
- Designed and implemented an agentic AI framework for AI-supported decision workflows.
- Built scalable analytical microservices and integrated reporting through modern BI technologies.
- Coordinated backend, AI, and frontend development across the MYNR platform stack.
Brahim A.
Last position:
Lead Developer at Blazor Web App at WAITS Software- und Prozessberatungsgesellschaft mbH
- Web development with Blazor
- Two-factor authentication for Blazor applications
- Uploading and downloading files
- Bug fixes for existing applications
- Programming interfaces
- Integration of third-party tools and technologies
- Creation of developer tests (unit tests)
Florian R.
Last position:
Senior Fullstack Developer at Ivii GmbH
- Two-month modernization of the management UI for AI-powered cameras
- Rewrote a complex React application to Vue 3 with single file components
- Set up the core architecture of the Vue application and configured Vite, Pinia, Router, I18n, ESLint, and Prettier
- Custom integration of Leaflet to display detection zones on images
- Assisted with backend extension and authentication adjustments
Vladimir M.
Last position:
Developer at Financial services provider
- Support and further development of a framework for developing applications in a banking association: DynS/OSPE
- Migration of the framework to Java 11 and Java 17
- Java8, Java11 and Java17, Spring, Spring-Batch, Spring WebServices, Spring-Security, Spring-Data, JPA, Hibernate, OpenSource libraries etc.
- XML, JAXB, JSON, REST and SOAP services, DB2, Oracle, WebSphere or Liberty AS, FreeMaker, Junit, mock libraries, JaCoCo, Maven, IntelliJ, Eclipse, GitHub, SVN, Jira
Denis K.
Last position:
Management Consultant at Freelance Management Consultant
Implementation of custom reporting solutions for financial KPIs aligned with specific business requirements
Development of a machine learning application that achieved a 250% performance improvement
Data Architect "Production-Oriented Quality Assurance" (03/2024–09/2024):
Design and implementation of an analytics platform to detect quality deviations in manufacturing
Build of a scalable data lakehouse architecture on Databricks in combination with SAP ERP data via SAP Datasphere
Close collaboration with the SAP team to harmonize bill of materials and order data
Visualization of KPIs to support shopfloor management
Lead Data Engineer "Sales Performance Monitoring" (08/2023–12/2023):
Design and implementation of a Databricks-based platform for analyzing sales figures and promotion effects
Integration of SAP SD data via SAP BW/4HANA
Use of Azure DevOps to orchestrate ETL jobs and deploy workflows
Technical Project Lead "Cloud Migration & Data Strategy" (02/2023–05/2023):
Migration of a heterogeneous data warehouse stack to a modern cloud architecture on Azure with Databricks as the central processing platform
Development of a governance-compliant data architecture to integrate SAP financial data and non-SAP sources
Technologies: Databricks, Delta Lake, Python, SAP Datasphere, Azure DevOps, PowerBI, SQL
Maximilian M.
Last position:
Interim Recruiter at Intersnack Group
- End-to-end recruiting, consulting with departments, drafting job descriptions, scheduling, building an automated recruiting process
- Focus on project environment, ERP rollout, project management, business process experts
- Active sourcing, identifying & screening candidates, gathering requirements, sourcing strategy, asset management & social media marketing, feedback sessions
- Direct approach, social media recruiting, performance recruiting, online marketing, building a talent pool
- Employer branding, project controlling, leading and accompanying interviews, executive search
- MS Office 365, Exchange, Word, Excel, agile recruiting, LinkedIn Recruiter, boolean & X-ray search, MS Teams, Recruitee ATS
Pappu P.
Last position:
Senior Cloud Consultant (AWS Services and Consulting) at devoteam GmbH
- Developed automated ETL pipelines with AWS Glue and Athena to ensure consistent data quality and governance requirements
- Implemented validation, anonymization, and encryption measures for data in compliance with GDPR
- Optimized cloud costs by introducing FinOps practices and increased transparency for business units
- Monitored performance, performed root cause analyses, and ensured adherence to SLAs
- Supported data and solution architects in building scalable data models for ML and analytics scenarios
Muhammet T.
Last position:
Head of IT at Audit Association of German Banks
- Overall responsibility for the strategic and operational realignment and management, further development of IT with direct reporting to the executive board
- Cloud transformation projects: MS365, Exchange Online, SharePoint Cloud, infrastructure cloud migration
- Leading an IT organization with around 20 employees
- Realigning IT as a strategic enabler for the entire organization
- Developing and implementing a holistic IT strategy ("Cloud First") including governance, security, and operational models
- Building a modern service management framework (ITIL) and effective control mechanisms
- Strategically managing software development and delivery (DevOps, CI/CD)
- Implementing cloud and digitization strategies
- Strategic planning and IT roadmap
- Optimizing IT infrastructure
- Budget and cost management
- Infrastructure migration: on-premise to on-premise (colocation)
- Overall responsibility for budget, cost optimization, resource and staff development
- Managing central digitization and transformation initiatives as well as board-level processes
Fatih K.
Last position:
Mobile App Developer at ING Belgium
- Part of a squad focused on intensive module development and integration
- Close collaboration with other squads and teams to integrate modules and essential components
- Use of SwiftUI and the Coordinator pattern to develop clean and understandable code
- Creative collaboration with UX designers in Figma and implementation in code
- Industry: Banking
- Project language: English
- Organizational form: Kanban
- Tools: Azure, Confluence, Figma, Teams
- Team size: 40 people
- Version control: Git, GitFlow, Azure
- App Store product: ING Banking
- Programming languages: SwiftUI, Swift
- Patterns: Coordinator, MVVM
- Swift Package Manager
- Localization: Yes
- Testing: XCTest, XCUITest
Kay O.
Last position:
Fullstack Developer at INIT GmbH
- Development of monitoring and control systems for public transport
- Development of a platform for real-time monitoring of passenger information and ticketing systems and an application for remote control and status monitoring of access systems
- Development of dynamic forms, complex tables, real-time dashboards (SignalR), and reusable components in the frontend (using Storybook)
- Implementation of REST interfaces in the backend
- Deployment to Microsoft Azure Cloud
- Technologies used: Angular 20, Angular Material 3, Dev Extreme, Storybook, C#/.NET 10
Ronny H.
Last position:
Förderbank Deutschland
- Extraction and transformation of relevant data from the SAP system developed for the bank and consolidation into the existing reporting environment
- Integration of the data into the existing BI model (extending the star schema to a galaxy schema) for generating the funding committee report and the business development report
- Ensuring data quality
- Knowledge transfer to department staff (SAP, SQL database, Power Pivot, DAX)
Dirk G.
Last position:
Senior Software Engineer, Software Architect at International Automotive Company
- Implementation of C and ARXML code generators
- Design and extension of local REST clients
- C# / REST / XSD / Embedded / WinForms
Discover over 15,000 top freelancers
Statistics of experts using .NET
Aggregated from the professional profiles of matched freelancers.
Experience
21 years
Position duration
3.4 years (Germany: 3.1 years)
Positions per freelancer
12 (Germany: 15)
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Banking and Finance, Transportation
Certification focus areas
Project Management, Information Technology, Product Development
Bachelor's degree or higher
100% (Germany: 87%)
Master's degree or higher
75% (Germany: 50%)
Doctorate
8% (Germany: 6%)
Certifications per freelancer
3
Most common languages
German, English, French
Speak two or more languages
100% (Germany: 96%)
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 Cologne 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.
Discover detailed .NET rate benchmarks:
Explore rate insightsAverage rates of experts in Cologne using .NET
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 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 (94%)
- Banking and Finance (65%)
- Transportation (41%)
- Manufacturing (41%)
- Government and Administration (41%)
- Telecommunication (41%)
- Automotive (35%)
- Healthcare (35%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
What .NET is
.NET is Microsoft’s open-source development platform for building web applications, APIs, desktop software, cloud services and business systems. It supports languages such as C#, F# and Visual Basic and runs across Windows, Linux and macOS. The modern platform includes the former .NET Core line, while ASP.NET Core provides its web stack.
Where it is used
Companies use .NET for systems that need strong integration with Microsoft products, clear application structure and dependable long-term operation. It appears in internal business tools, customer portals, financial software, logistics systems, SaaS products and connected services.
- Build REST and gRPC APIs
- Develop web applications with ASP.NET Core
- Connect enterprise systems and data sources
- Create desktop software with .NET technologies
Ecosystem and tooling
A strong .NET specialist works across the wider Microsoft ecosystem rather than only writing application code. Typical work includes Entity Framework Core, LINQ, SQL Server, Azure, Docker, Kubernetes, message brokers and automated delivery pipelines. Visual Studio, JetBrains Rider and the dotnet command-line tools support development, testing and deployment.
When companies need specialists
Freelance expertise is useful when a team is modernising a legacy .NET Framework application, launching an ASP.NET Core service or adding capacity for a demanding release. In Cologne, specialists may support local product teams, industrial companies and service organisations through remote work, on-site collaboration or a flexible mix of both.
- Migrate from .NET Framework to modern .NET
- Design service boundaries and API contracts
- Improve performance, security or test coverage
- Set up Azure deployment and observability
What strong professionals bring
The best professionals combine C# fluency with sound software design, database knowledge and practical cloud experience. They understand dependency injection, asynchronous programming, authentication, authorisation and automated testing. They also explain trade-offs clearly and leave maintainable code, useful documentation and reproducible deployment processes behind.
Choosing the right fit
Assess specialists through a focused discussion about the actual system, not by technology keywords alone. Ask how they would approach architecture, data access, testing, monitoring and a safe migration path. For Cologne-based collaboration, clarify German or English communication, expected on-site presence and how the specialist will work with existing product and operations teams.
Frequently asked questions
Questions about .NET? Start with the answers below.
.NET is used to build web applications, APIs, desktop software, cloud services and enterprise systems. Its libraries and tooling support business logic, data access, authentication, testing and integration with external services.
.NET offers a broad, strongly integrated ecosystem around C#, Visual Studio, Azure and Microsoft enterprise services. Java is often weighed against it for large backend systems, while Node.js may suit teams that want JavaScript across the stack; the right choice depends on existing skills, runtime needs and operational constraints.
A strong .NET specialist commonly brings C#, SQL, Entity Framework Core, REST API design and automated testing. Cloud delivery with Azure, containerisation with Docker, observability, messaging and CI/CD are also valuable for production systems.
A small, well-defined service may need a specialist who can work independently within an established structure. A complex migration or business-critical platform calls for experience with architecture, legacy .NET Framework code, security, deployment and production troubleshooting.
Yes. .NET work is well suited to remote collaboration when repositories, environments, tickets and deployment processes are organised. Cologne teams should agree on working hours, communication language, access requirements and any occasions that require on-site work.
Ask for examples that show maintainable C# code, meaningful tests, clear API contracts and sensible handling of failures. A quality .NET professional can explain design decisions, security controls, performance trade-offs and how the system is operated after release.
ASP.NET Core is the web framework within the wider .NET platform. It provides the components for HTTP applications, APIs, routing, middleware and web security, while .NET also supports workloads such as desktop software, background services and command-line tools.
.NET Framework is the older Windows-focused implementation, while modern .NET is cross-platform and actively used for new applications. A specialist should be able to assess compatibility, plan incremental migration and preserve business behaviour while updating dependencies and deployment.
The average hourly rate of freelancers in Cologne, Germany who have used .NET in their recent projects is 90 €, which corresponds to a daily rate of about 724 € based on an 8-hour working day.
Of the freelancers in Cologne, Germany who have used .NET in their recent projects, 100% hold at least a Bachelor's degree, 75% hold at least a Master's degree, and 8% hold a doctorate.
On average, freelancers in Cologne, Germany who have used .NET in their recent projects have 21 years of professional experience, with a single engagement typically lasting around 3.4 years.
The most common languages among freelancers in Cologne, Germany who have used .NET in their recent projects are German (100%), English (100%), and French (18%).
The most common industries among freelancers in Cologne, Germany who have used .NET in their recent projects are Information Technology (94%), Banking and Finance (65%), and Transportation (41%).
The most common business areas among freelancers in Cologne, Germany who have used .NET in their recent projects are Information Technology (94%), Product Development (82%), and Quality Assurance (71%).
Main locations of FRATCH Experts, who have recently used .NET
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.
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