Senior .NET, ASP.NET, Azure and Azure DevOps Engineer Contractor
Hi. My name is Tim Metcalfe and I design and build modern, scalable, and secure cloud applications with Microsoft technologies.
I am a UK based Microsoft AZ-204, AZ-400, and AZ-305 certified professional with over 20 years experience in .NET, 10 in Azure and 8 in ADO.
Do you need a cloud solution designing, have a one off project or maybe you need ongoing support or consultancy? Let me help you.
What I Do
.NET Development
Expert in C#, ASP.NET Core, MVC, Razor Pages, and Blazor. Building robust web applications and APIs with the latest .NET technologies and best practices.
Azure Cloud Solutions
Azure-certified professional (AZ-204, AZ-305) specializing in cloud architecture, App Services, Functions, Storage, SQL Database, and Cosmos DB.
DevOps & CI/CD
AZ-400 certified DevOps engineer implementing CI/CD pipelines, Infrastructure-as-Code with Bicep and Terraform, and automated testing strategies.
Database Solutions
Expertise in SQL Server, Azure SQL Database, Cosmos DB, and Entity Framework Core. Database design, optimization, and migration services.
API Development
RESTful API design and development using Web API, OpenAPI specifications, and API Management. Integration with third-party services and microservices architecture.
Testing & Quality
Comprehensive testing strategies including unit testing, integration testing with Playwright, and automated testing in CI/CD pipelines.
Why Choose Me?
Azure Certified Professional
Hold multiple Azure certifications including AZ-204 (Azure Developer), AZ-400 (DevOps Engineer), and AZ-305 (Azure Solutions Architect). Stay current with the latest Azure technologies and best practices.
Proven Track Record
15+ years of experience delivering enterprise solutions for organizations like NHS Wales, International Baccalaureate Organisation, and various SaaS companies. Consistently delivered projects on time and within budget.
Full-Stack Expertise
Complete .NET and Azure ecosystem knowledge from front-end Blazor applications to back-end APIs, databases, and cloud infrastructure. One developer, end-to-end solutions.
Collaborative Approach
Experienced working in agile teams across different time zones. Strong communication skills and ability to work as an extension of your existing development team or lead projects independently.
Modern Development Practices
Implement industry best practices including Clean Architecture, SOLID principles, automated testing, CI/CD pipelines, and Infrastructure-as-Code. Focus on maintainable, scalable solutions.
Rapid Delivery
Efficient development process with focus on delivering working software quickly. Whether it's a proof of concept, MVP, or enterprise application, I can adapt to your timeline and requirements.
Recent Work
Accent Housing (July 2025 – Present)
Azure DevOps, Microsoft Entra and React Developer
- Built Azure DevOps pipelines to automate internal deployments
- Set up and configured Microsoft Entra External ID for a customer portal
- Built the customer portal web app in React and integrated with Entra External ID and APIs hosted in Azure
NHS Wales (April 2025 – July 2025)
Senior .NET Developer
- Built front-end UI using Blazor with designs from Figma
- Translated DevOps user stories into suitable Blazor and Razor components
- Implemented comprehensive testing using BUnit
NHS Wales (Dec 2024 – Mar 2025)
Site Reliability and Azure DevOps Engineer
- Built best practice CI/CD pipelines for web apps and APIs deployment
- Created NuGet package pipelines for Azure Artifacts
- Implemented Application Insights and custom logging for comprehensive monitoring
Sesame Bankhall Group (Jan 2025 – Mar 2025)
Data Engineer / Logic Apps Developer
- Built Azure Logic App for third-party system integration
- Processed Service Bus messages with transformation and verification
- Implemented Terraform for infrastructure deployment across environments
NHS Wales (Sept 2024 – Nov 2024)
Senior .NET and Azure Developer
- Designed and developed web APIs for immunisation service
- Created comprehensive testing with unit tests and Playwright integration tests
- Extensive Entity Framework Core work with Oracle database
International Baccalaureate (May 2022 – May 2024)
Senior .NET, Azure and DevOps Developer
- Developed microservice applications with Event Hub, Functions, and Service Bus
- Built high-performance student results app with CosmosDB and Azure Functions
- Implemented Azure Managed Identity across all resources for enhanced security
- Advanced observability with Application Insights and Kusto QL
Client Testimonials
Client references and testimonials available on request.
Get In Touch
Contact Information
Please use the form or contact me on LinkedIn at https://www.linkedin.com/in/tim-metcalfe-778a181/