We are a .NET Development Company

 Web |  Mobile |  Cloud

We can build anything for you using .NET
Tell Us What You Need.

Fullstack means Full-Stack

.NET Core,Microsoft Azure,ASP.NET Core,Blazor Server,Blazor WebAssembly,Blazor United,.NET MAUI Blazor Hybrid,Windows Desktop Development,Azure DevOps Services,C#,Entity Framework Core,SQL Server,.NET Framework,Windows Services,Web API,MySQL,JavaScript,CSS,HTML,Silverlight,WPF,UWP

YOUR .NET DEVELOPMENT SPECIALIST.

Our Custom Expertise

We deliver rock-solid software that just works.

We know what to use when and how to get it right, on time and on budget.

— End-to-end. We have you covered.
Assemblysoft are Microsoft Certifed Developers

Assemblysoft is fantastic to work with! They're always there when you need them, communicate really well, and make everything super easy. From the beginning to the end, they've been an awesome partner. The team's passion for what they do creates a positive vibe that makes working with them a breeze. I highly recommend Assemblysoft for their great service and commitment to making customers happy. Definitely a five-star experience!

James Smith ( Project Lead at MADC LIMITED )

Core Expertise

Six Core Pillars of .NET Expertise in Our Team

Microsoft-certified .NET specialists delivering cloud-native, full-stack and DevOps solutions across Azure and .NET.

Microsoft Azure Developers — cloud solutions and services

Microsoft Cloud Engineers

Real world experience architecting Azure cloud solutions and services for the enterprise for over 10 years. We know what it takes to migrate and develop robust cloud native solutions.

Azure development services
DotNet Development Services — full stack .NET applications

.NET Developers

We build full stack .NET applications for Windows, Web, Cloud and Mobile. We have been developing .NET applications since the inception of the framework — from .NET Framework through to .NET 10.

.NET specialists since day one
Blazor Developers in the United Kingdom — Blazor WebAssembly and Blazor Server

.NET Blazor Application Developers

We build custom Blazor applications and components that run in any web browser or mobile device. We have completed multiple production-grade Blazor WebAssembly and Blazor Server projects.

Blazor development services
Azure DevOps Developers in the UK — CI/CD pipelines and DevOps automation

Azure DevOps Services Engineers

We develop build and release pipelines to seamlessly provision complex cloud infrastructure and automate software deployments, providing cost-effective cloud consumption and faster delivery cycles.

Azure DevOps services
AI development with Azure OpenAI and Microsoft Copilot — .NET AI integration specialists

AI & Azure Copilot Development

We integrate Azure OpenAI, Azure AI Services, and Microsoft Copilot extensions into .NET applications — from intelligent chatbots and document intelligence to predictive features, semantic search, and AI-assisted business automation.

Azure AI & Copilot services
.NET database development — SQL Server, Entity Framework Core and Azure SQL specialists

.NET Data & Database Engineering

Deep expertise in SQL Server, Entity Framework Core, Azure SQL, Cosmos DB, and data architecture. We design, optimise, and migrate databases for .NET applications at any scale — from schema design and query performance to cloud-native data pipelines.

.NET data specialists since day one

With over 25 years experience building Microsoft applications, we know a thing or two about .NET

Assemblysoft — Microsoft Partner providing custom .NET software development and Azure cloud services

Hear what a partnership with Assemblysoft can mean for your business:

.NET & AI

Build smarter apps faster with .NET and AI

Use C#, OpenAI, and Azure, and more to build intelligent solutions that transform your business.

Get started Explore the docs

AI Ecosystem — .NET

Azure OpenAI Semantic Kernel ML.NET Azure AI Search Microsoft.Extensions.AI Azure AI Inference SDK OpenAI SDK Microsoft Foundry GitHub Models Hugging Face C# / .NET 10 Azure Cosmos DB

Discover AI-enhanced use cases

Transform your business with generative AI, LLMs, and SLMs.

Create a chat app

Build intelligent apps that chat with users and provide logical, responsive interactions powered by LLMs.

Explore demo

Summarize text

Automatically consolidate large volumes of content using LLMs to make data accessible and clear.

Explore demo

Generate content

Create text, code, images, and sound using AI and LLMs for external and internal communications.

Explore demo

Analyze data

Make content accessible and actionable when you enable searches over documents and data.

Explore demo

Innovate with the latest AI technology

Apply existing C# skills, Visual Studio tools, and a growing ecosystem to build AI-driven apps.

Integrate with leading AI models

Access popular AI models from industry leaders like OpenAI, Mistral, Cohere, and Meta — hosted on Azure, GitHub Models, or Hugging Face.

Optimise data retrieval with vector stores

Leverage advanced vector stores like Milvus, Qdrant, and Azure AI Search to efficiently manage and query high-dimensional data.

Leverage proven SDKs and AI libraries

Utilise a wide range of .NET SDKs including Semantic Kernel, OpenAI SDK, Microsoft Foundry, Azure AI Inference SDK, and ML.NET. The new Microsoft.Extensions.AI library provides a unified abstraction layer to enhance your app and drive innovation.


.NET Mobile Application Development

Develop Once, Run Everywhere. Cross-platform applications, written in .NET, that are consistent and cost effective for your business.

Android Applications

Native support for Android mobile devices with the same, shared, code-base.

iOS Applications

Native iOS mobile applications with the same, shared, code-base.

Windows Applications

Native support for Windows using the same, shared, code-base.

Web Applications

Web applications that run natively on a mobile phone, combining the best of web with the capabilities of the smart phone.

Cloud Backed

Application data backed by the cloud for a consistent and robust experience.

Offline Continuity

Offering offline mode, so your users can continue working while on the go, anywhere, anytime.

Secure

End-to-end encryption and security best practices, ensuring your data remains safe at all times and adheres to compliance standards for your business domain.

All of this from a single code-base.

We develop applications that run on Android | iOS | Windows and Web, all from a single code-base saving your business time and cost as our applications run everywhere.

What We Build

.NET Development Services We Provide

End-to-end .NET software development services — from greenfield builds to legacy modernisation and cloud-native delivery.

Custom .NET Software Development

With .NET we create anything from web applications and interactive websites, mobile applications, desktop applications and services to games and plugins.

We have been a part of .NET since it's inception, leveraging the entire .NET Framework and ecosystem for our projects and clients.

.NET 10 C# ASP.NET Core

Integration & API Development

Seamlessly connect .NET applications with databases, APIs, ERPs, CRMs, and more. Sharing data simplifies business processes and improves cross-functional collaboration.

Our .NET developers leverage many tools in the ecosystem. We use frameworks like WCF and Entity Framework for integrations, ASP.NET Web API to build RESTful APIs, and vendor SDKs to integrate with CRMs and ERPs.

REST APIs Entity Framework CRM / ERP

Migration and Modernization

We help companies modernise their .NET applications and migrate legacy apps to .NET. Our priority? Seamless experience for our clients, with Zero downtime.

For example, you can migrate from IBM Cloud to AWS or vice versa and update your framework from Classic ASP to ASP.NET. Our .NET development teams will refresh your architecture and tech stack. With modernized workloads, you'll see improved reliability and scalability and cut down on long-term costs.

.NET Framework → .NET 10 Zero Downtime

Cloud-Based Solutions

We've built fast, cloud-native .NET solutions for dozens of companies.

We promote better resource usage and reduce costs by implementing a scalable microservices architecture with ASP.NET Core. We also build scalable web applications and host them on cloud services like Microsoft Azure, AWS, GCP, and more. By tapping into tools like Docker, Kubernetes, and Azure Functions, we create a .NET solution that's easy to maintain, fast to deploy, and adaptable to changing business needs.

Azure Docker Kubernetes Microservices

E-commerce Solutions

We've built several secure, scalable, high-performance e-commerce websites for established and emerging brands using .NET.

Our developers create the back-end infrastructure, add secure payment gateways, and facilitate integrations by leveraging ASP.NET or ASP.NET Core.

Payment Gateways ASP.NET Core

Enterprise Solutions

The .NET platform is versatile and well-suited for custom software development, particularly for organizations already familiar with the Microsoft stack.

Our .NET developers use the ecosystem's many tools and frameworks to build various custom solutions. We leverage tools like Microsoft Dynamic 365, ASP.NET, and Azure Services to build platforms like ERPs, CRMs, and BI solutions. .NET's enterprise support and large developer community make it ideal for enterprise applications.

Dynamics 365 ERP / CRM BI Solutions

Rapidly onboarding and digesting your existing software and company vision, while selecting the best fit innovation for your future business, takes skill and expertise.

We are Microsoft Development Specialists.

We are your dedicated .NET Team.

Assemblysoft integrating with Stripe payments Paypal payments with Assemblysoft Email and SMS from .Net applications with Assemblysoft Braintree Credit card payment integration from Assemblysoft

Some of the Amazing Clients we have worked with

We code AND decode technical solutions

Solving problems and turning ideas into secure and reliable software solutions, but we are much more than that.

.NET Specialists

We have a unique ability, gained over many years, to convey complex into simple.

How We Work

In-house team
UK managed
Transparent
Scalable
Agile
Cost effective
Highly skilled

What We Deliver

Cloud native solutions Migration to the cloud Mobile applications Web applications DevOps pipelines Bespoke software Prototypes & MVPs

We build custom software applications backed by cloud native services, combined with solid solutions architecture to produce secure, robust, sustainable software that our clients love.

.NET DEVELOPMENT INSIGHTS

At the heart of our service offering is specialized .NET application development, designed to leverage the full capabilities of .NET technologies to meet your unique business requirements. Our dedication to excellence and innovation in .NET development ensures that we deliver not just applications, but transformative business tools. Explore how our strategic implementation and commitment to quality can bring your vision to life.

WHAT?

End-to-End .NET Development Services

We offer end-to-end .NET development services, encompassing everything from initial consulting and planning to development, deployment, and ongoing support. Our team is adept at utilizing the full spectrum of .NET capabilities to create solutions that are not only efficient but also secure and future-proof.

WHY?

Focused on Business Impact

Our commitment goes beyond just delivering technical solutions. We focus on creating .NET applications that have a tangible impact on your business, enhancing operational efficiency, improving customer engagement, and driving growth.

HOW?

Strategic Implementation

Our strategic implementation of .NET development projects involves a step-by-step methodology that prioritizes clear communication, meticulous planning, and expert execution. This ensures that we not only meet but exceed client expectations, delivering projects on time and within budget.

Microsoft Partner

.NET Development Agency

We are .NET specialists with real-world experience delivering ASP.NET, Blazor and .NET applications and services at scale.

As a Microsoft partner, we create bespoke software applications targeting .NET and Azure — the Microsoft Cloud.

.NET Specialists

Deep expertise across the full .NET ecosystem — from APIs to Blazor frontends.

Azure Native

Cloud-first solutions built on Microsoft Azure — scalable, secure, and reliable.

Microsoft Certified

Certified developers delivering enterprise-grade bespoke software applications.

Call Us

+44 (0) 1202 428719

UK · Bournemouth

Visit Us

2 Woodland Walk, Bournemouth

Dorset BH5 1LU, United Kingdom

Email Us

hello@assemblysoft.com

Start a meaningful conversation with us today.

FAQs

Assemblysoft are Your Safe Pair of Hands

16 Google Reviews

Azure

Azure DevOps

Blazor