Custom software
Web apps, PWAs and APIs designed around how your business actually works. Not a template with your logo on it.
.NET · React · TypeScript · PWA
die swart hart · software & ai studio
We build the software you can't buy.
Custom apps, Azure cloud and AI for businesses whose needs stopped fitting a template. Microsoft certified, based in South Africa.
move your cursor · click to scatter
.NET 10AzureReactTypeScriptCosmos DBAzure FunctionsAzure AI FoundryGitHub CopilotPythonPower PlatformProgressive Web AppsComputer vision
What we do
Built to order. Run for years.
Six things we are good at. If yours is not on the list, ask anyway. The sixth one exists because people kept asking.
Cloud on Azure
Architecture, serverless back ends and cost control. We run production apps for less than a coffee a month, and we show you the bill.
Functions · Cosmos DB · Static Web Apps
AI & agents
Copilots, agents and retrieval over your own data. Grounded, measured and safe enough to put in front of customers.
Azure AI Foundry · Copilot Studio · RAG
Automation & integration
Connecting the systems you already pay for, so your people stop re-typing things between them.
Power Platform · APIs · webhooks
Rescue & modernisation
Inherited a system nobody wants to touch? We stabilise it, document it and move it forward without a big-bang rewrite.
audits · migrations · CI/CD
Prototypes & odd things
Robots, voice assistants, vision models. If it needs a Python script and a soldering iron, we are interested.
Python · edge devices · computer vision
Credentials
Microsoft certified. Verifiably.
Our engineers hold current Microsoft certifications across the whole stack we sell: Azure architecture, development and administration, AI and agents, and developer tooling. Every badge is public on Credly, so you never have to take our word for it.
We sit the new exams as they ship, because that is where the interesting work is.
Microsoft Certified professionals
How we work
Three steps. No surprises.
Discover
A 45-minute call and a one-page brief. You get a fixed quote or a clear hourly plan, in writing, within a week.
deliverable: brief + quoteBuild
Short cycles with a working demo at the end of each one. You see it, you steer it, nothing disappears into a black box.
deliverable: weekly demo linkRun
We host, monitor and keep it under budget. Alerts reach us before they reach you, and you own every account and line of code.
deliverable: uptime, invoices you understandThe name
Why a black heart?
Swart hart is Afrikaans for black heart.
It started as a play on our founder's surname, Swarts, and it stuck because it says what we mean. We care a lot, and we do not do fluff. Every project gets the thing we would want for ourselves: software that still works on a Monday morning, with a bill you can read.
We are a small studio, deliberately. You talk to the people who write the code, and the people who write the code have sat the exams.
- BasedSouth Africa · remote-first
- FocusCustom software, Azure, AI
- Favourite colourObvious
Start a project
Tell us what you are building.
A few lines is enough. We reply within one working day, usually with questions, sometimes with a sketch.
hello@dieswarthart.co.zaThanks, there.
Your message is in our inbox. You will hear back within one working day.