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Custom .NET Applications

Build and scale custom web applications leveraging the .NET framework.

The Why

Expertise in .NET takes years to master.

Our team has cultivated that experience first-hand building, maintaining, and scaling custom .NET applications. We started with classic ASP and grew with Microsoft as they changed the framework over the years. We now leverage .NET core along with the full .NET framework and our tested SDLC to build mission-critical web applications. .NET is a popular choice for enterprise application development due to its sophistication and maturity. Let us take a look at what’s running your business.

“My application does not run well in modern cloud environments.”
“My application has bugs and issues when I deploy it to production causing downtime and loss.”
“I am worried about the security of my application and think I may be hacked.”
“I need to update my application and I don’t know where to begin.”
...just to name a few, of course.

How Atlantic BT Helps You

.NET application development that stands the test of time.


At Atlantic BT, we code with security in mind. We educate our team on security issues such as the OWASP Top 10, use role-based security with the ASP.NET Identity system, and are experienced with various cryptography techniques to secure sensitive data.


Because the .NET framework has support from Microsoft as well as a rich open source community, there are many components and third-party packages that our developers can leverage to increase efficiency. Less coding means saving time and money, ultimately boosting your ROI for web development projects.

Smooth Deployments

Atlantic BT uses TeamCity and Octopus Deploy to automate building, testing, and deploying .NET applications. By automating testing and deployments, we ensure they are both reliable and repeatable.

Easy integrations

Atlantic BT’s developers are skilled at integrating .NET applications with software like Salesforce, Slack, Google Docs, and more. If it has an API, we can integrate it with your application or we can build an API to facilitate the integration.

Simple Maintenance

Atlantic BT developers engage in best practices including peer code reviews and unit testing. These practices help ensure our code is built to be maintainable, making future updates easy and fast.


Our .NET development solutions are built and hosted with performance and scalability in mind. We leverage Amazon Web Services to allow your web application to scale with your business.

Dig Deeper

Related Services


Continuous Integration

We leverage team city to build and test our code.


Continuous Delivery

We deploy code when it hits the repository and passes all tests.


Serverless Architecture

We understand microservices and functions as a service.


Code Reviews

we can evaluate your code for complexity, security, and resilience.

Application Development Case Studies

Doctor and Nurse looking at laptop
How do you rapidly turn a prototype into a scalable application? Atlantic BT built a leading healthcare provider's application from scratch using .NET, leading to an ongoing partnership.
View Case Study
Drone photo of neighborhood
Using a proprietary software with limitations, CAHEC acquired a large backlog. They needed a partner to help them get organized and mold the software to fit their unique needs.
View Case Study

The Atlantic BT Manifesto

The Ultimate Guide To Planning A Complex Web Project


Atlantic BT's Insights

We’re sharing the latest concepts in tech, design, and software development. Learn more about our findings.

Questions & Answers

What is the best web development framework?
Many people commonly ask “what is a framework in web development?” Web development frameworks can easily be confused with web development tools, languages, or parts of the web development stack (like PHP, Ruby, or Javascript).
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What is the best programming language for web development?
If there was one “best” programming language, then everything else would be obsolete. The reality is that there are so many different programming languages because there is no “best” language for any situation.
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How much does web development cost?
Web development can vary from a few hundred to millions of dollars depending on what is needed. You may simply need some changes to something that already exists, or you'd like to build a large or complex application.
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What is PHP web development?
PHP is a back end language primarily used for custom applications, content management systems (such as Wordpress), eCommerce engines (such as Magento), or even massive sites like Facebook.
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What is the best way to become a web developer?
We get lots of questions from university students working on projects -- How do I get into web development? How long does it take to learn? How much do web developers make?
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What is front end vs. back end development?
As web development evolved, it separated into logical specialization: front end web development and back end development. While back end development involves the server-side development, front end is the final rendering.
Learn More about What is front end vs. back end development?
What is full stack web development?
Full stack web development as a term evolved due to the separation of roles between front end and back end developers. A “full stack” developer is a developer that can work in both front end and back end technologies.
Learn More about What is full stack web development?