For the person who has to justify this internally
We Are Called QASource. About 40% of What We Do Is Engineering
If you are trying to explain to your leadership why a QA company should build software for you, this page is written to be forwarded.
The Short Version
QASource builds software for a large share of its clients: release engineering, DevOps, feature development, and in some cases entire products. It is roughly 40% of the work today.
Not one of those engagements started that way. Every client came to us for quality first and asked for development later, after our engineers had been inside their codebase, their pipeline, and their defect history long enough that handing over build work was the obvious next step rather than a leap of faith.
Nobody has ever hired us to build software before watching us validate it. We think that is the right order, and we have never tried to change it.
Why the Order Matters
A development vendor starts from a specification and a codebase it has never seen. The first six months are spent learning what the system does, where it is fragile, and which conventions the team actually follows rather than the ones in the style guide.
A quality engineering partner already has all of that. We have read the code, run the regressions, watched the releases go out, and seen which parts break under load. When we write a feature, we are not learning your system. We are the people who already know where its edges are.
That is why the expansion usually comes from the client rather than from us. The proposal is not "let us also do development." It is your engineering director asking whether the team that has been catching the defects could write the next module, because those engineers already know more about it than a new vendor would learn in two quarters.
What "Development" Means Here
- Feature Development: Inside a product we already validate, on the same team and at the same cadence.
- Release Engineering and DevOps: Pipelines, environments, and build and deploy tooling.
- Platform and Integration Work: The services and connections between systems.
- Whole Products: In a small number of cases, where the client wanted a team rather than a supplier.
The One Line We Won't Cross
AI Assurance does not validate systems QASource built. The independence of that practice is the whole product, and it is not negotiable, because release confidence depends on it.
Everywhere else, the same team that validates can build. Here it cannot, and if you need both, we will tell you which one we are giving up.
If Someone Asks You for Evidence
Ask us for a comparable engagement, and we will name one under NDA if the client prefers it that way. The pattern repeats: a quality engagement that ran long enough for the client's engineering leadership to conclude that the team already knowing the codebase was the obvious one to extend it.
Ask Us the Awkward Version of This Question
What happens if the development work goes wrong? There is an answer to that on our About page, written by the founder.