Python & Django.
You & Fusionbox.

Fusionbox is a US-based team of Python Engineers and UX Designers. We build and maintain custom Python/Django applications.

Speak with one of our engineers about your project

Stuff We Do

For nearly 20 years as a custom software development company, we've been building outstanding applications for clients in all industries. Here are a few areas of particular expertise:

Python and Django custom software

Python & Django

We're leaders in both Python and Django development, with many years of support to the community and a history of important contributions.

In addition to our full project support, we offer Python training services and Python staff augmentation.

More about Python Development

UX/UI and web design Denver

User Experience, UI and Web Design

We don't begin designing until we understand your business, your goals, and your users. Our mature process facilitates that discovery.

More about our User Experience process

Application security and testing

Application Security

Wouldn't you rather have security experts writing your code?

We provide application security services for clients in all industries, including: Financial, Health, and Public Sector.

More about Secure Software

Data and database design services

Data & Database Design

We offer all manner of data services, including advanced database design, complex data modeling, and data migration (ETL).

We are certified PostgreSQL experts.

More about Data Service

How We Do It

We work as partners with our clients using an agile, sprint-by-sprint engagement model.

More about how we work



We want to ensure Fusionbox is a good fit for your project. Start with one 80-hour sprint and see real results. Get to know us as a partner without signing a long-term contract.



Fusionbox uses a Kanban board to record and visualize your entire project's progress. You always know the status of every task on the board: what's queued up, what's being worked on, and what's being tested.


You Decide What's Next

At the beginning of each sprint, you'll collaborate with our development teams directly to decide what's the highest priority.

UX and Custom Software Development Clients

Some of our recent partners include:



Why it’s crucial to validate UX assumptions with live user testing.

Posted by justin

Picture this: your entire team worked tirelessly for six…. nine… make it fifteen months to iron out bugs, design every interaction, and create a seamless, delightful experience. You launch. And wait. And wait. The conversions aren’t coming. What’s happening? How do you find out, and more importantly, how do you fix it?



Agile Reporting

Posted by Molly

Interested in how can you know that your agile project is going well? In this article, we discuss all the charts and KPIs that can be used to monitor your agile software development project.


More Articles & Guides

We love working with innovative people.

Browse our recent work and when you're ready, come see us and we'll get started!

Contact us today