One of the biggest misconceptions in software development is that if someone can write code, they can build a software product. They are not the same thing.
A junior developer may be perfectly capable of taking a requirement and turning it into working code. A senior developer starts asking different questions. What happens when this fails? What happens when 10 users become 10,000? How will we support it? How will we monitor it? How do we upgrade it without breaking customers? What happens to the data? Is it secure? And perhaps most importantly: are we solving the right problem in the first place?
That difference becomes even more important when we talk about websites versus true SaaS applications.
A Website and a SaaS Application Are Different Things
Today, there are fantastic tools that allow someone to create a professional-looking website remarkably quickly. AI has made that even easier. But a good-looking interface is only the front door. A true SaaS application has an entire building behind it.
There are databases, APIs, authentication, authorization, security, logging, monitoring, backups, integrations, deployment pipelines, performance considerations, data retention, disaster recovery, scalability, and ongoing support.
Then comes another layer that is sometimes forgotten entirely: the business. Who is the customer? What problem are we solving? How does the customer actually use the product? What happens when their workflow doesn't match the workflow the development team imagined? And how do we continue improving the product without creating so much technical debt that every future change becomes harder than the last?
Junior Developers Build Features. Senior Developers Think About Consequences.
That isn't meant as criticism of junior developers. Everyone starts somewhere, and good junior developers can become outstanding senior engineers. The difference is often experience.
After you have lived through enough production outages, database problems, failed deployments, security incidents, performance problems, and seemingly "simple" changes that unexpectedly affected something else, you start thinking differently.
Instead of asking, "How do I make this work?" you begin asking, "How do I make this work reliably, securely, sustainably, and at scale?"
That is a very different question.
And Then There Is Product Thinking
Some of the best developers I've worked with don't immediately start coding when you give them a problem. They ask questions.
Why are we doing this? Who needs it? What are they doing today? What problem are we actually trying to solve? Is there already something in the platform that does this? What happens six months from now when the business changes?
Sometimes the best technical decision is not writing more code at all.
That kind of thinking is especially important in SaaS because every shortcut eventually becomes somebody's problem. It might become the support team's problem. It might become an infrastructure problem. It might become a security problem. Or it might become technical debt that the development team spends years trying to unwind.
AI Makes This Distinction Even More Important
AI can now generate remarkably good code. It can build interfaces, APIs, database structures, and even entire applications faster than many of us would have imagined a few years ago. I think that's a tremendous opportunity.
But generating code and engineering a sustainable product are still different things.
AI can help us build faster. Experience helps us understand what should be built, how it should be built, and what could go wrong after we build it.
That is why I don't believe the future belongs simply to the person who can write the most code. It belongs to people who understand systems, customers, operations, and consequences—and who can bring all of those things together.
Because ultimately, the goal isn't to build software that works during the demo.
The goal is to build software that still works when the demo is long forgotten and thousands of customers depend on it.
Thanks,
Michael Cronin
Website: https://www.michaelcronin.info
LinkedIn: https://www.linkedin.com/in/michaeltcronin/details/experience/
